Üzleti, irodai és ipari

Development board introduction:
 
The A9G development board is a versatile development board based on EMC's A9G GPRS / GSM GPS / BDS module that can be used to validate the basic communication functions and peripheral functions of the A9G module.
 
A9G development board with the basic phone / SMS, GPRS networking communications, GPS / BDS dual-mode positioning capabilities.
 
A9G development board contains a lithium battery charging management, microphone, speaker interface, USB communication interface, multiple user keys / led, TF card slot, accelerometer, SPI interface, I2C2 interface, ADC interface.
 
A9G development board camera expansion board, an external 30W / 200W camera.
 
A9G development board slot machine expansion board, can add a traditional slot machine.
 
 
 
Based on the above features, A9G can be used for a variety of peripheral prototyping verification:
 
Use GPRS GPS, as well as acceleration sensors for vehicle immobilizer.
 
Remote monitoring intercom using GSM and microphone / speakers
 
Smart watch with 1.54 "capacitive touch screen using GPRS / GSM GPS
 
Use of GPRS / GSM GPS, heart rate oximeter sensor, 1.54-inch capacitive touch screen monitor the elderly
 
Use GPRS TF camera extension board remote monitoring camera
 
Wechat payment slot machine scheme using slot machine
 
Using onboard features, custom device based on Lua programming

Product description:
On-board LED indicator light, using chip imported from Taiwan, minimum starting voltage 2.5v, working voltage 3-6v, maximum input current 3A;
When the mobile power 5V 2A input and output is 8W, it can drive 12V 0.8a device, 3.7v lithium battery input and output is 6W, it can drive 12V 0.5a device
Size:24*15*7MM

DIY Kit 1x4 4 Independent Key Button Keypad Keyboard Module Mcu for Arduino Student Class Design Graduation Project Experiment
 

Description：
18650 batterieladesystem integrierte
on ladeschutz
on discharge protection
tasche size 10x3 cm
oled display (d1 - and d2 (sda, scl)
zeigen led available (gpio16)
bedienen as nodemcu
smt connectors for a deep sleep mode
Five direction key (D5, D6, D7，Flash)
6 gpio escape (adc, d3, d4, d8, d9, d10)
3 v / 5 v output
micro usb entrance (5 ~ 12 v)
1 switch controls the power.
anzeige led (red = chargin, green = fully charged)
can and work at the same time
 
* * be careful and -. if you put the wrong direction of the battery, the charging chip.
 
this product does not contain 18650 battery. * *
Package include:
1*For Wemos ESP8266 ESP-12F Preflashed WIFI Development Board 0.96 inch OLED Display 18650 Shield CP2102 W/ Joystick Micro USB To TTL

Temperature and humidity transmitter SHT20 sensor Modbus RS485
 
Product Description:
Product adopts industrial-grade chip, high-precision SHT20 temperature and humidity sensors, ensure the products with good reliability, high precision and interchangeability.
Adopt RS485 hardware interface (with the lightning protection design), the protocol layer compatible with standard industrial Modbus Rtu protocol.
This product integrating MODBUS protocol with ordinary, users can choose communication protocols, common agreement with automatic upload function(Connect the RS485 serial interface mode tool by automatically output temperature and humidity).
 
MODBUS PROTOCAL
Modbus Function Code:
0x03:Read keep register
0x04: Read input register
0x06:Write a single keep register
0x10:Write more keep registers
 
Modbus Frame format:
Master send format:
The responseformat of slave:
MODBUSCOMMAND
Master read temperature command frame(0x04):
The response data from slave:
Temperature value=0x131,converted to a decimal 305,the actual temperature value = 305 / 10 = 30.5°
Note: the temperature is signed hexadecimal number, temperature value = 0xFF33, converted to a decimal - 205, the actual temperature = -20.5 °;
 
Master read humidity command frame(0x04)
 
 
The response data from slave:
Humidity value = 0x222, converted to a decimal 546, actual humidity value = 546/10 = 54.6 % ;
Continuous read temperature and humidity command frame(0x04):
The response data from slave:
 
 
Read keep register(0x03):
Readdevice address from the slave:
The response data from slave:
 
Modify the contents of the registers(0x06):
Modify the slave address register:
Modify the slave address:0x08 = 8
 
The response data from slave(And send the same):
Continuously change keep registers(0x10):
 
Slave address :0x20 = 32
Baud rate :0x2580 = 9600
The response data from slave:
 
 
 
 
General Protocal
The default baud rates9600 (the user can set), 8 bits of data, one stop, no check
RS485
 
CMD

instructions
READ

Report triggered a temperature and humidity
(27.4°,67.7%  27.4°67.7% )
AUTO

Start the temperature and humidity automatically report function(Same as above)
STOP

Stop the temperature and humidity automatically report function
BR:XXXX

Set the baud rate
9600~19200
(BR:9600)
TC:XX.X

Set the temperature calibration(-10.0~10.0)
(TC:02.02.0°)
HC:XX.X

Set the humidityration(-10.0~10.0)
(HC:-05.1  -5.1% )
HZ:XXX

Set the temperature and humidity reporting rate(0.5,1,2,5,10)
(HZ:2 reporting rate 2Hz)
PARAM

Read the system current Settings
 
PARAM CMD:
TC:0.0,HC:0.0,BR:9600,HZ:1  ->Temp calibration 0.0, Humi calibration0.0, Baud rate 9600,report rate 1Hz
SLAVE_ADD:1                      ->MODBU Slave address 1

   1Pcs 1-Button Shield
   2Pcs Normal pins

100% brand new and high quality
 
Features:
RC absorption circuit module used on protecting the relay or thyristor because it can avoid damage that from inductive electromotive force generated by the inductive load when on or off. Preventing electromagnetic interference and increasing the anti-jamming capability of the microcontroller.
For AC or DC 5 ~ 400V inductive load (less than 1000W), protection relay contacts or thyristor.
RC absorption circuit,absorb induced electromotive force that from inductive load.
With varistor, to prevent excessive fluctuations in voltage or current is too large and resulting in relay contact adhesion.
To provide anti-interference ability of the circuit.
Adopt crimp terminals that make wiring become more convenient.
Instructions for use: This module is suitable for circuits containing inductive loads and switching devices such as relays and thyristors. When used, the two connectors of the module connect to two contacts of the relay, or parallel with the thyristor, to avoid induced electromotive force damage the relay or thyristor.
RC Absorption/Snubber Circuit Module only, other accessories demo in the picture is not included!
 
Specification:
Dimensions: 3.1x1.3cm/1.22x0.51inch

 
Tracking info of  China Post Ordinary Small Packet Plus can be check here : www.17track.net/en 
Main parameters and characteristics
 
1, according to the spectral characteristics of light-sensitive resistors have three photosensitive resistance: UV light-sensitive resistors, infrared light-sensitive resistors, visible light, the photosensitive electricity.
 
2, the main parameters are as follows:
 
A, dark current, the dark resistance: sensitive resistance at a certain applied voltage, when no light irradiation, when the current flowing is called dark current. The applied voltage and the dark current of the dark resistance than known;
 
B, Sensitivity: Sensitivity refers to the resistance value of the photosensitive resistance against light irradiation (dark resistance) the relative change in the value of the resistance value of the light irradiation (light resistance).
 
C, volt-ampere characteristic curve. Volt-ampere characteristic curve used to describe the relationship between the applied voltage and the photoresistor photocurrent, for the photosensitive device, its photocurrent with the applied voltage increases.
 
D, the temperature coefficient. Photoelectric effect photoresistance influenced by temperature, partial photosensitive resistance at low temperature sensitive photoelectric higher, and sensitivity at high temperatures are lower.
 
E, rated power. The rated power is used to refer to certain lines in the photosensitive resistor being allowed to consume power when the temperature rises, the power consumption is reduced.

New arrive CS4344 D/A Conversion Module Stereo Audio Converter

Factory Price! Newest Version EZP 2019 High-speed USB SPI Programmer Support24 25 93 EEPROM 25 Flash BIOS Chip 5 Socket
1. Appliance repair: suitable for household appliances maintenance industry flash color TV, DVD, computer motherboards, hard disk memory chips.
2. The product research and development: the company product research and development in the process of burning test chip.
3. The factory production: automatic offline copy function is particularly suited to factory mass burn memory chips.
Product features:
1. USB 2.0 interface, speed up to 12 MBPS.
2. Read and write speed is super fast, read EN25T80 as long as three seconds, write EN25T80 only in 9 seconds, the fastest is currently on the market the BIOS chip programmer.
3. The automatic identification of chip.
4. Automatically detect whether chip.
5. Automatic selection chip power supply voltage.
6. Automatic offline copy.
7. Support the PC software and programming device firmware upgrade.
8. To fully support 25 FLASH block, block 24 EEPROM, 25 EEPROM memory chips, block 93 EEPROM, etc.
9. Appearance is compact, easy to carry, and ordinary card about the size.
Package include:
package 1 :EZP 2019 2 simple sop8/16 socket usb cable CD software
package 2: ezp 2019 2 simple sop8/16 socket sop16 300mil sop8 200mil/150mil socket usb cable CD software
 

Factory Price! Newest Version EZP 2019 High-speed USB SPI Programmer Support24 25 93 EEPROM 25 Flash BIOS Chip 5 Socket
1. Appliance repair: suitable for household appliances maintenance industry flash color TV, DVD, computer motherboards, hard disk memory chips.
2. The product research and development: the company product research and development in the process of burning test chip.
3. The factory production: automatic offline copy function is particularly suited to factory mass burn memory chips.
Product features:
1. USB 2.0 interface, speed up to 12 MBPS.
2. Read and write speed is super fast, read EN25T80 as long as three seconds, write EN25T80 only in 9 seconds, the fastest is currently on the market the BIOS chip programmer.
3. The automatic identification of chip.
4. Automatically detect whether chip.
5. Automatic selection chip power supply voltage.
6. Automatic offline copy.
7. Support the PC software and programming device firmware upgrade.
8. To fully support 25 FLASH block, block 24 EEPROM, 25 EEPROM memory chips, block 93 EEPROM, etc.
9. Appearance is compact, easy to carry, and ordinary card about the size.
Package include:
package 1 :EZP 2019 2 simple sop8/16 socket usb cable CD software
package 2: ezp 2019 2 simple sop8/16 socket sop16 300mil sop8 200mil/150mil socket usb cable CD software
 

Factory Price! Newest Version EZP 2019 High-speed USB SPI Programmer Support24 25 93 EEPROM 25 Flash BIOS Chip 5 Socket
1. Appliance repair: suitable for household appliances maintenance industry flash color TV, DVD, computer motherboards, hard disk memory chips.
2. The product research and development: the company product research and development in the process of burning test chip.
3. The factory production: automatic offline copy function is particularly suited to factory mass burn memory chips.
Product features:
1. USB 2.0 interface, speed up to 12 MBPS.
2. Read and write speed is super fast, read EN25T80 as long as three seconds, write EN25T80 only in 9 seconds, the fastest is currently on the market the BIOS chip programmer.
3. The automatic identification of chip.
4. Automatically detect whether chip.
5. Automatic selection chip power supply voltage.
6. Automatic offline copy.
7. Support the PC software and programming device firmware upgrade.
8. To fully support 25 FLASH block, block 24 EEPROM, 25 EEPROM memory chips, block 93 EEPROM, etc.
9. Appearance is compact, easy to carry, and ordinary card about the size.
Package include:
package 1 :EZP 2019 2 simple sop8/16 socket usb cable CD software
package 2: ezp 2019 2 simple sop8/16 socket sop16 300mil sop8 200mil/150mil socket usb cable CD software
 

 
LM358 is the core two-stage operational amplifier, which can amplify DC weak signals, such as DC voltage signals, DC pulse signals, can amplify signals of millivolts or even weaker, and has two potentiometers, respectively for the first stage and The second stage performs single-stage magnification adjustment, but the total magnification is the product of the two-stage multiple, so the magnification will be adjusted to a large extent.
 
(If the first level is adjusted to 20 times magnification, then if the second level is adjusted to 100 times, then the total magnification is 2000 times)
 
Note: If the friends take the maximum magnification without telling the request, we will ship the goods at the default 1000 times.
 
Board parameters:
 
1. Power supply voltage: 3.5-24V DC power supply
 
2. Current output: maximum 15-20MA (non-linear)
 
3. Voltage output: output = input voltage signal * magnification
 
4. Magnification: Total multiple = first multiple multiple * second multiple multiple
 
5. Board size: length 45.3mm width 16.2mm
 
6. The two potentiometers on the board are rotated counterclockwise to increase the multiple.

Module Application:
Can be used for home and factory gas leak monitoring device, suitable for liquefied gas, butane, propane, methane, smoke and other detection;
Module Features:
1, the use of high-quality double-panel design, with power indicator and TTL signal output instructions;
2, with DO switch signal (TTL) output and AO analog signal output;
3, TTL output valid signal is low. (When the output low signal lights, can be directly connected to the microcontroller or relay module)
4, the analog output voltage with the higher the higher the voltage the higher the voltage.
5, the liquefied petroleum gas, natural gas, city gas, smoke has a better sensitivity.
6, there are four screw holes to facilitate positioning;
7, product dimensions: 32 (L) * 20 (W) * 22 (H)
8, with long service life and reliable stability
9, fast response to recovery features
 
Electrical performance:
Input voltage: DC5V Power consumption (current): 150mA
DO output: TTL digital 0 and 1 (0.1 and 5V)
AO output: 0.1-0.3V (relatively no pollution), the maximum concentration of about 4V voltage
Special reminder: the sensor power, the need to preheat 20S or so, the measured data was stable, the sensor fever is a normal phenomenon, because the internal electric wire, if the hot is not normal.
 
Wiring:
1, VCC: then the power supply positive (5V)
2, GND: Connect the power supply negative
3, DO: TTL switch signal output
4, AO: analog signal output
 
test program:
 
Implementation of the function: This version of supporting test procedures
Use the chip: AT89S52
Crystal: 11.0592MHZ
Baud rate: 9600
Compiler environment: Keil
Statement This procedure is only used for learning and reference, please specify the copyright and author information!
************************************************** ******************* /
/ ************************************************* *******************
Description: 1, when the measured concentration is greater than the set concentration, the microcontroller IO output low
************************************************** ******************* /
# Include // library file
#define uchar unsigned char // macro defines unsigned character
#define uint unsigned int // macro defines unsigned integer
 
/ ************************************************* *******************
I / O definition
************************************************** ******************* /
Sbit LED = P1 ^ 0; / / define the first bit of P1 port P1 (P1.0) as the indicator
Sbit DOUT = P2 ^ 0; / / define the first bit of the microcontroller P2 port (ie P2.0) for the sensor input
/ ************************************************* *******************
Delay function
************************************************** ******************* /
Void delay () // delay program
{
Uchar m, n, s;
For (m = 20; m> 0; m--)
For (n = 20; n> 0; n--)
For (s = 248; s> 0; s--);
}
/ ************************************************* *******************
Main function
************************************************** ******************* /
Void main ()
{
While (1) // infinite loop
{
LED = 1; // off P1.0 port light
If (DOUT == 0) // When the concentration is higher than the set value, execute the condition function
{
Delay (); / / delay anti-interference
If (DOUT == 0) // When the concentration is higher than the set value, execute the condition function
{
LED = 0; // light P1.0 port light
 
 
 
 

Module Application:
Can be used for home and factory gas leak monitoring device, suitable for liquefied gas, butane, propane, methane, smoke and other detection;
Module Features:
1, the use of high-quality double-panel design, with power indicator and TTL signal output instructions;
2, with DO switch signal (TTL) output and AO analog signal output;
3, TTL output valid signal is low. (When the output low signal lights, can be directly connected to the microcontroller or relay module)
4, the analog output voltage with the higher the higher the voltage the higher the voltage.
5, the liquefied petroleum gas, natural gas, city gas, smoke has a better sensitivity.
6, there are four screw holes to facilitate positioning;
7, product dimensions: 32 (L) * 20 (W) * 22 (H)
8, with long service life and reliable stability
9, fast response to recovery features
 
Electrical performance:
Input voltage: DC5V Power consumption (current): 150mA
DO output: TTL digital 0 and 1 (0.1 and 5V)
AO output: 0.1-0.3V (relatively no pollution), the maximum concentration of about 4V voltage
Special reminder: the sensor power, the need to preheat 20S or so, the measured data was stable, the sensor fever is a normal phenomenon, because the internal electric wire, if the hot is not normal.
 
Wiring:
1, VCC: then the power supply positive (5V)
2, GND: Connect the power supply negative
3, DO: TTL switch signal output
4, AO: analog signal output
 
test program:
 
Implementation of the function: This version of supporting test procedures
Use the chip: AT89S52
Crystal: 11.0592MHZ
Baud rate: 9600
Compiler environment: Keil
Statement This procedure is only used for learning and reference, please specify the copyright and author information!
************************************************** ******************* /
/ ************************************************* *******************
Description: 1, when the measured concentration is greater than the set concentration, the microcontroller IO output low
************************************************** ******************* /
# Include // library file
#define uchar unsigned char // macro defines unsigned character
#define uint unsigned int // macro defines unsigned integer
 
/ ************************************************* *******************
I / O definition
************************************************** ******************* /
Sbit LED = P1 ^ 0; / / define the first bit of P1 port P1 (P1.0) as the indicator
Sbit DOUT = P2 ^ 0; / / define the first bit of the microcontroller P2 port (ie P2.0) for the sensor input
/ ************************************************* *******************
Delay function
************************************************** ******************* /
Void delay () // delay program
{
Uchar m, n, s;
For (m = 20; m> 0; m--)
For (n = 20; n> 0; n--)
For (s = 248; s> 0; s--);
}
/ ************************************************* *******************
Main function
************************************************** ******************* /
Void main ()
{
While (1) // infinite loop
{
LED = 1; // off P1.0 port light
If (DOUT == 0) // When the concentration is higher than the set value, execute the condition function
{
Delay (); / / delay anti-interference
If (DOUT == 0) // When the concentration is higher than the set value, execute the condition function
{
LED = 0; // light P1.0 port light
 
 
 
 

Module Application:
Can be used for home and factory gas leak monitoring device, suitable for liquefied gas, butane, propane, methane, smoke and other detection;
Module Features:
1, the use of high-quality double-panel design, with power indicator and TTL signal output instructions;
2, with DO switch signal (TTL) output and AO analog signal output;
3, TTL output valid signal is low. (When the output low signal lights, can be directly connected to the microcontroller or relay module)
4, the analog output voltage with the higher the higher the voltage the higher the voltage.
5, the liquefied petroleum gas, natural gas, city gas, smoke has a better sensitivity.
6, there are four screw holes to facilitate positioning;
7, product dimensions: 32 (L) * 20 (W) * 22 (H)
8, with long service life and reliable stability
9, fast response to recovery features
 
Electrical performance:
Input voltage: DC5V Power consumption (current): 150mA
DO output: TTL digital 0 and 1 (0.1 and 5V)
AO output: 0.1-0.3V (relatively no pollution), the maximum concentration of about 4V voltage
Special reminder: the sensor power, the need to preheat 20S or so, the measured data was stable, the sensor fever is a normal phenomenon, because the internal electric wire, if the hot is not normal.
 
Wiring:
1, VCC: then the power supply positive (5V)
2, GND: Connect the power supply negative
3, DO: TTL switch signal output
4, AO: analog signal output
 
test program:
 
Implementation of the function: This version of supporting test procedures
Use the chip: AT89S52
Crystal: 11.0592MHZ
Baud rate: 9600
Compiler environment: Keil
Statement This procedure is only used for learning and reference, please specify the copyright and author information!
************************************************** ******************* /
/ ************************************************* *******************
Description: 1, when the measured concentration is greater than the set concentration, the microcontroller IO output low
************************************************** ******************* /
# Include // library file
#define uchar unsigned char // macro defines unsigned character
#define uint unsigned int // macro defines unsigned integer
 
/ ************************************************* *******************
I / O definition
************************************************** ******************* /
Sbit LED = P1 ^ 0; / / define the first bit of P1 port P1 (P1.0) as the indicator
Sbit DOUT = P2 ^ 0; / / define the first bit of the microcontroller P2 port (ie P2.0) for the sensor input
/ ************************************************* *******************
Delay function
************************************************** ******************* /
Void delay () // delay program
{
Uchar m, n, s;
For (m = 20; m> 0; m--)
For (n = 20; n> 0; n--)
For (s = 248; s> 0; s--);
}
/ ************************************************* *******************
Main function
************************************************** ******************* /
Void main ()
{
While (1) // infinite loop
{
LED = 1; // off P1.0 port light
If (DOUT == 0) // When the concentration is higher than the set value, execute the condition function
{
Delay (); / / delay anti-interference
If (DOUT == 0) // When the concentration is higher than the set value, execute the condition function
{
LED = 0; // light P1.0 port light
 
 
 
 

Module Application:
Can be used for home and factory gas leak monitoring device, suitable for liquefied gas, butane, propane, methane, smoke and other detection;
Module Features:
1, the use of high-quality double-panel design, with power indicator and TTL signal output instructions;
2, with DO switch signal (TTL) output and AO analog signal output;
3, TTL output valid signal is low. (When the output low signal lights, can be directly connected to the microcontroller or relay module)
4, the analog output voltage with the higher the higher the voltage the higher the voltage.
5, the liquefied petroleum gas, natural gas, city gas, smoke has a better sensitivity.
6, there are four screw holes to facilitate positioning;
7, product dimensions: 32 (L) * 20 (W) * 22 (H)
8, with long service life and reliable stability
9, fast response to recovery features
 
Electrical performance:
Input voltage: DC5V Power consumption (current): 150mA
DO output: TTL digital 0 and 1 (0.1 and 5V)
AO output: 0.1-0.3V (relatively no pollution), the maximum concentration of about 4V voltage
Special reminder: the sensor power, the need to preheat 20S or so, the measured data was stable, the sensor fever is a normal phenomenon, because the internal electric wire, if the hot is not normal.
 
Wiring:
1, VCC: then the power supply positive (5V)
2, GND: Connect the power supply negative
3, DO: TTL switch signal output
4, AO: analog signal output
 
test program:
 
Implementation of the function: This version of supporting test procedures
Use the chip: AT89S52
Crystal: 11.0592MHZ
Baud rate: 9600
Compiler environment: Keil
Statement This procedure is only used for learning and reference, please specify the copyright and author information!
************************************************** ******************* /
/ ************************************************* *******************
Description: 1, when the measured concentration is greater than the set concentration, the microcontroller IO output low
************************************************** ******************* /
# Include // library file
#define uchar unsigned char // macro defines unsigned character
#define uint unsigned int // macro defines unsigned integer
 
/ ************************************************* *******************
I / O definition
************************************************** ******************* /
Sbit LED = P1 ^ 0; / / define the first bit of P1 port P1 (P1.0) as the indicator
Sbit DOUT = P2 ^ 0; / / define the first bit of the microcontroller P2 port (ie P2.0) for the sensor input
/ ************************************************* *******************
Delay function
************************************************** ******************* /
Void delay () // delay program
{
Uchar m, n, s;
For (m = 20; m> 0; m--)
For (n = 20; n> 0; n--)
For (s = 248; s> 0; s--);
}
/ ************************************************* *******************
Main function
************************************************** ******************* /
Void main ()
{
While (1) // infinite loop
{
LED = 1; // off P1.0 port light
If (DOUT == 0) // When the concentration is higher than the set value, execute the condition function
{
Delay (); / / delay anti-interference
If (DOUT == 0) // When the concentration is higher than the set value, execute the condition function
{
LED = 0; // light P1.0 port light
 
 
 
 

Module Application:
Can be used for home and factory gas leak monitoring device, suitable for liquefied gas, butane, propane, methane, smoke and other detection;
Module Features:
1, the use of high-quality double-panel design, with power indicator and TTL signal output instructions;
2, with DO switch signal (TTL) output and AO analog signal output;
3, TTL output valid signal is low. (When the output low signal lights, can be directly connected to the microcontroller or relay module)
4, the analog output voltage with the higher the higher the voltage the higher the voltage.
5, the liquefied petroleum gas, natural gas, city gas, smoke has a better sensitivity.
6, there are four screw holes to facilitate positioning;
7, product dimensions: 32 (L) * 20 (W) * 22 (H)
8, with long service life and reliable stability
9, fast response to recovery features
 
Electrical performance:
Input voltage: DC5V Power consumption (current): 150mA
DO output: TTL digital 0 and 1 (0.1 and 5V)
AO output: 0.1-0.3V (relatively no pollution), the maximum concentration of about 4V voltage
Special reminder: the sensor power, the need to preheat 20S or so, the measured data was stable, the sensor fever is a normal phenomenon, because the internal electric wire, if the hot is not normal.
 
Wiring:
1, VCC: then the power supply positive (5V)
2, GND: Connect the power supply negative
3, DO: TTL switch signal output
4, AO: analog signal output
 
test program:
 
Implementation of the function: This version of supporting test procedures
Use the chip: AT89S52
Crystal: 11.0592MHZ
Baud rate: 9600
Compiler environment: Keil
Statement This procedure is only used for learning and reference, please specify the copyright and author information!
************************************************** ******************* /
/ ************************************************* *******************
Description: 1, when the measured concentration is greater than the set concentration, the microcontroller IO output low
************************************************** ******************* /
# Include // library file
#define uchar unsigned char // macro defines unsigned character
#define uint unsigned int // macro defines unsigned integer
 
/ ************************************************* *******************
I / O definition
************************************************** ******************* /
Sbit LED = P1 ^ 0; / / define the first bit of P1 port P1 (P1.0) as the indicator
Sbit DOUT = P2 ^ 0; / / define the first bit of the microcontroller P2 port (ie P2.0) for the sensor input
/ ************************************************* *******************
Delay function
************************************************** ******************* /
Void delay () // delay program
{
Uchar m, n, s;
For (m = 20; m> 0; m--)
For (n = 20; n> 0; n--)
For (s = 248; s> 0; s--);
}
/ ************************************************* *******************
Main function
************************************************** ******************* /
Void main ()
{
While (1) // infinite loop
{
LED = 1; // off P1.0 port light
If (DOUT == 0) // When the concentration is higher than the set value, execute the condition function
{
Delay (); / / delay anti-interference
If (DOUT == 0) // When the concentration is higher than the set value, execute the condition function
{
LED = 0; // light P1.0 port light
 
 
 
 

Module Application:
Can be used for home and factory gas leak monitoring device, suitable for liquefied gas, butane, propane, methane, smoke and other detection;
Module Features:
1, the use of high-quality double-panel design, with power indicator and TTL signal output instructions;
2, with DO switch signal (TTL) output and AO analog signal output;
3, TTL output valid signal is low. (When the output low signal lights, can be directly connected to the microcontroller or relay module)
4, the analog output voltage with the higher the higher the voltage the higher the voltage.
5, the liquefied petroleum gas, natural gas, city gas, smoke has a better sensitivity.
6, there are four screw holes to facilitate positioning;
7, product dimensions: 32 (L) * 20 (W) * 22 (H)
8, with long service life and reliable stability
9, fast response to recovery features
 
Electrical performance:
Input voltage: DC5V Power consumption (current): 150mA
DO output: TTL digital 0 and 1 (0.1 and 5V)
AO output: 0.1-0.3V (relatively no pollution), the maximum concentration of about 4V voltage
Special reminder: the sensor power, the need to preheat 20S or so, the measured data was stable, the sensor fever is a normal phenomenon, because the internal electric wire, if the hot is not normal.
 
Wiring:
1, VCC: then the power supply positive (5V)
2, GND: Connect the power supply negative
3, DO: TTL switch signal output
4, AO: analog signal output
 
test program:
 
Implementation of the function: This version of supporting test procedures
Use the chip: AT89S52
Crystal: 11.0592MHZ
Baud rate: 9600
Compiler environment: Keil
Statement This procedure is only used for learning and reference, please specify the copyright and author information!
************************************************** ******************* /
/ ************************************************* *******************
Description: 1, when the measured concentration is greater than the set concentration, the microcontroller IO output low
************************************************** ******************* /
# Include // library file
#define uchar unsigned char // macro defines unsigned character
#define uint unsigned int // macro defines unsigned integer
 
/ ************************************************* *******************
I / O definition
************************************************** ******************* /
Sbit LED = P1 ^ 0; / / define the first bit of P1 port P1 (P1.0) as the indicator
Sbit DOUT = P2 ^ 0; / / define the first bit of the microcontroller P2 port (ie P2.0) for the sensor input
/ ************************************************* *******************
Delay function
************************************************** ******************* /
Void delay () // delay program
{
Uchar m, n, s;
For (m = 20; m> 0; m--)
For (n = 20; n> 0; n--)
For (s = 248; s> 0; s--);
}
/ ************************************************* *******************
Main function
************************************************** ******************* /
Void main ()
{
While (1) // infinite loop
{
LED = 1; // off P1.0 port light
If (DOUT == 0) // When the concentration is higher than the set value, execute the condition function
{
Delay (); / / delay anti-interference
If (DOUT == 0) // When the concentration is higher than the set value, execute the condition function
{
LED = 0; // light P1.0 port light
 
 
 
 

Module Application:
Can be used for home and factory gas leak monitoring device, suitable for liquefied gas, butane, propane, methane, smoke and other detection;
Module Features:
1, the use of high-quality double-panel design, with power indicator and TTL signal output instructions;
2, with DO switch signal (TTL) output and AO analog signal output;
3, TTL output valid signal is low. (When the output low signal lights, can be directly connected to the microcontroller or relay module)
4, the analog output voltage with the higher the higher the voltage the higher the voltage.
5, the liquefied petroleum gas, natural gas, city gas, smoke has a better sensitivity.
6, there are four screw holes to facilitate positioning;
7, product dimensions: 32 (L) * 20 (W) * 22 (H)
8, with long service life and reliable stability
9, fast response to recovery features
 
Electrical performance:
Input voltage: DC5V Power consumption (current): 150mA
DO output: TTL digital 0 and 1 (0.1 and 5V)
AO output: 0.1-0.3V (relatively no pollution), the maximum concentration of about 4V voltage
Special reminder: the sensor power, the need to preheat 20S or so, the measured data was stable, the sensor fever is a normal phenomenon, because the internal electric wire, if the hot is not normal.
 
Wiring:
1, VCC: then the power supply positive (5V)
2, GND: Connect the power supply negative
3, DO: TTL switch signal output
4, AO: analog signal output
 
test program:
 
Implementation of the function: This version of supporting test procedures
Use the chip: AT89S52
Crystal: 11.0592MHZ
Baud rate: 9600
Compiler environment: Keil
Statement This procedure is only used for learning and reference, please specify the copyright and author information!
************************************************** ******************* /
/ ************************************************* *******************
Description: 1, when the measured concentration is greater than the set concentration, the microcontroller IO output low
************************************************** ******************* /
# Include // library file
#define uchar unsigned char // macro defines unsigned character
#define uint unsigned int // macro defines unsigned integer
 
/ ************************************************* *******************
I / O definition
************************************************** ******************* /
Sbit LED = P1 ^ 0; / / define the first bit of P1 port P1 (P1.0) as the indicator
Sbit DOUT = P2 ^ 0; / / define the first bit of the microcontroller P2 port (ie P2.0) for the sensor input
/ ************************************************* *******************
Delay function
************************************************** ******************* /
Void delay () // delay program
{
Uchar m, n, s;
For (m = 20; m> 0; m--)
For (n = 20; n> 0; n--)
For (s = 248; s> 0; s--);
}
/ ************************************************* *******************
Main function
************************************************** ******************* /
Void main ()
{
While (1) // infinite loop
{
LED = 1; // off P1.0 port light
If (DOUT == 0) // When the concentration is higher than the set value, execute the condition function
{
Delay (); / / delay anti-interference
If (DOUT == 0) // When the concentration is higher than the set value, execute the condition function
{
LED = 0; // light P1.0 port light
 
 
 
 

Module Application:
Can be used for home and factory gas leak monitoring device, suitable for liquefied gas, butane, propane, methane, smoke and other detection;
Module Features:
1, the use of high-quality double-panel design, with power indicator and TTL signal output instructions;
2, with DO switch signal (TTL) output and AO analog signal output;
3, TTL output valid signal is low. (When the output low signal lights, can be directly connected to the microcontroller or relay module)
4, the analog output voltage with the higher the higher the voltage the higher the voltage.
5, the liquefied petroleum gas, natural gas, city gas, smoke has a better sensitivity.
6, there are four screw holes to facilitate positioning;
7, product dimensions: 32 (L) * 20 (W) * 22 (H)
8, with long service life and reliable stability
9, fast response to recovery features
 
Electrical performance:
Input voltage: DC5V Power consumption (current): 150mA
DO output: TTL digital 0 and 1 (0.1 and 5V)
AO output: 0.1-0.3V (relatively no pollution), the maximum concentration of about 4V voltage
Special reminder: the sensor power, the need to preheat 20S or so, the measured data was stable, the sensor fever is a normal phenomenon, because the internal electric wire, if the hot is not normal.
 
Wiring:
1, VCC: then the power supply positive (5V)
2, GND: Connect the power supply negative
3, DO: TTL switch signal output
4, AO: analog signal output
 
test program:
 
Implementation of the function: This version of supporting test procedures
Use the chip: AT89S52
Crystal: 11.0592MHZ
Baud rate: 9600
Compiler environment: Keil
Statement This procedure is only used for learning and reference, please specify the copyright and author information!
************************************************** ******************* /
/ ************************************************* *******************
Description: 1, when the measured concentration is greater than the set concentration, the microcontroller IO output low
************************************************** ******************* /
# Include // library file
#define uchar unsigned char // macro defines unsigned character
#define uint unsigned int // macro defines unsigned integer
 
/ ************************************************* *******************
I / O definition
************************************************** ******************* /
Sbit LED = P1 ^ 0; / / define the first bit of P1 port P1 (P1.0) as the indicator
Sbit DOUT = P2 ^ 0; / / define the first bit of the microcontroller P2 port (ie P2.0) for the sensor input
/ ************************************************* *******************
Delay function
************************************************** ******************* /
Void delay () // delay program
{
Uchar m, n, s;
For (m = 20; m> 0; m--)
For (n = 20; n> 0; n--)
For (s = 248; s> 0; s--);
}
/ ************************************************* *******************
Main function
************************************************** ******************* /
Void main ()
{
While (1) // infinite loop
{
LED = 1; // off P1.0 port light
If (DOUT == 0) // When the concentration is higher than the set value, execute the condition function
{
Delay (); / / delay anti-interference
If (DOUT == 0) // When the concentration is higher than the set value, execute the condition function
{
LED = 0; // light P1.0 port light
 
 
 
 

Module Application:
Can be used for home and factory gas leak monitoring device, suitable for liquefied gas, butane, propane, methane, smoke and other detection;
Module Features:
1, the use of high-quality double-panel design, with power indicator and TTL signal output instructions;
2, with DO switch signal (TTL) output and AO analog signal output;
3, TTL output valid signal is low. (When the output low signal lights, can be directly connected to the microcontroller or relay module)
4, the analog output voltage with the higher the higher the voltage the higher the voltage.
5, the liquefied petroleum gas, natural gas, city gas, smoke has a better sensitivity.
6, there are four screw holes to facilitate positioning;
7, product dimensions: 32 (L) * 20 (W) * 22 (H)
8, with long service life and reliable stability
9, fast response to recovery features
 
Electrical performance:
Input voltage: DC5V Power consumption (current): 150mA
DO output: TTL digital 0 and 1 (0.1 and 5V)
AO output: 0.1-0.3V (relatively no pollution), the maximum concentration of about 4V voltage
Special reminder: the sensor power, the need to preheat 20S or so, the measured data was stable, the sensor fever is a normal phenomenon, because the internal electric wire, if the hot is not normal.
 
Wiring:
1, VCC: then the power supply positive (5V)
2, GND: Connect the power supply negative
3, DO: TTL switch signal output
4, AO: analog signal output
 
test program:
 
Implementation of the function: This version of supporting test procedures
Use the chip: AT89S52
Crystal: 11.0592MHZ
Baud rate: 9600
Compiler environment: Keil
Statement This procedure is only used for learning and reference, please specify the copyright and author information!
************************************************** ******************* /
/ ************************************************* *******************
Description: 1, when the measured concentration is greater than the set concentration, the microcontroller IO output low
************************************************** ******************* /
# Include // library file
#define uchar unsigned char // macro defines unsigned character
#define uint unsigned int // macro defines unsigned integer
 
/ ************************************************* *******************
I / O definition
************************************************** ******************* /
Sbit LED = P1 ^ 0; / / define the first bit of P1 port P1 (P1.0) as the indicator
Sbit DOUT = P2 ^ 0; / / define the first bit of the microcontroller P2 port (ie P2.0) for the sensor input
/ ************************************************* *******************
Delay function
************************************************** ******************* /
Void delay () // delay program
{
Uchar m, n, s;
For (m = 20; m> 0; m--)
For (n = 20; n> 0; n--)
For (s = 248; s> 0; s--);
}
/ ************************************************* *******************
Main function
************************************************** ******************* /
Void main ()
{
While (1) // infinite loop
{
LED = 1; // off P1.0 port light
If (DOUT == 0) // When the concentration is higher than the set value, execute the condition function
{
Delay (); / / delay anti-interference
If (DOUT == 0) // When the concentration is higher than the set value, execute the condition function
{
LED = 0; // light P1.0 port light
 
 
 
 

Latest Raspberry Pi 3 Official Case Black ABS Professional Enclosure Box Only For Raspberry Pi 3 Model B Plastic Protective Case
 
 
 

USB to Micro USB Power charging Cable with ON/ OFF switch
We support wholesale. If you need more quantity or other shipping method, please contact with us.
 
 
Features:
-Raspberry Pi,Banana Pi Micro USB Cable with ON / OFF Switch for your CONVENIENCE
-No need to pull the cable to restart or reboot your PI, just press the button to turn your Pi on and off
-5ft (1m) length -- Can be used as power supply for the Pi up to 2 Amp
-Helps prevent the Pi's USB connector from wear and tear due to frequently pulling and inserting the usb cable
-Not for data transfer use

 shell case holder stents

Tilt switch module and a digital interface, built-in 13 LED build a simple circuit to produce tilt warning lamp 13  comes with digital interfaces of the LED,
 
 
the tilt switch sensor interface to access digital 3,when the tilt open Off sensor senses a key signal, LED lights, otherwise off.
 
 
Routines source code:
 
 
int Led = 13 ;// define LED Interface
 
int buttonpin = 3; // define the tilt switch sensor interfaces
 
int val ;// define numeric variables val
 
void setup()
 
{
 
pinMode(Led, OUTPUT) ;// define LED as output interface
 
pinMode(buttonpin, INPUT) ;// define the output interface tilt switch sensor
 
}
void loop ()
 
{
 
val = digitalRead(buttonpin) ;// digital interface will be assigned a value of 3 to read val
 
if(val == HIGH) // When the tilt sensor detects a signal when the switch, LED flashes
 
{
 
digitalWrite(Led, HIGH);
 
}
 
else
 
{
 
digitalWrite(Led, LOW);
 
}
 
}
 
Package Included:
 
1Pcs New Standard Tilt Switch Module For AVR PIC Good .
 
 

 
 

 
Tracking info of  China Post Ordinary Small Packet Plus can be check here : www.17track.net/en 
 
 
Color will be send randomly,please note. Thank you!
 
 
 
 

 
Tracking info of  China Post Ordinary Small Packet Plus can be check here : www.17track.net/en 
 
 
Color will be send randomly,please note. Thank you!
 
 
 
 

 
Tracking info of  China Post Ordinary Small Packet Plus can be check here : www.17track.net/en 
 
 
Color will be send randomly,please note. Thank you!
 
 
 
 

 
Tracking info of  China Post Ordinary Small Packet Plus can be check here : www.17track.net/en 
 
 
Color will be send randomly,please note. Thank you!
 
 
 
 

 
Tracking info of  China Post Ordinary Small Packet Plus can be check here : www.17track.net/en 
 
 
Color will be send randomly,please note. Thank you!
 
 
 
 

 
Tracking info of  China Post Ordinary Small Packet Plus can be check here : www.17track.net/en 
 
 
Color will be send randomly,please note. Thank you!
 
 
 
 

 
Self-Made Feature:
1, HID interface, say no more driver again.
2, Support windows 7 system.
 
PICkit 3 Features
USB (Full speed 12 Mbits/s interface to host PC)
Real-time execution
MPLAB IDE compatible (free copy included)
Built-in over-voltage/short circuit monitor
Firmware upgradeable from PC/web download
Totally enclosed
Supports low voltage to 2.0 volts (2.0v to 6.0v range)
Diagnostic LEDs (power, busy, error)
Read/write program and data memory of microcontroller
Erase of program memory space with verification
Freeze-peripherals at breakpoint
Program up to 512K byte flash with the Programmer-to-Go
The MPLAB PICkit 3 allows debugging and programming of PIC®and dsPIC®Flash microcontrollers at a most affordable price point using the powerful graphical user interface of the MPLAB Integrated Development Environment (IDE). The MPLAB PICkit 3 is connected to the design engineer\'s PC using a full speed USB interface and can be connected to the target via an Microchip debug (RJ-11) connector (compatible with MPLAB ICD 2, MPLAB ICD 3 and MPLAB REAL ICE).
 
Pakcage List:
1 PICKIT3
1 USB cable
1 6pin cable
 
 

 
Self-Made Feature:
1, HID interface, say no more driver again.
2, Support windows 7 system.
 
PICkit 3 Features
USB (Full speed 12 Mbits/s interface to host PC)
Real-time execution
MPLAB IDE compatible (free copy included)
Built-in over-voltage/short circuit monitor
Firmware upgradeable from PC/web download
Totally enclosed
Supports low voltage to 2.0 volts (2.0v to 6.0v range)
Diagnostic LEDs (power, busy, error)
Read/write program and data memory of microcontroller
Erase of program memory space with verification
Freeze-peripherals at breakpoint
Program up to 512K byte flash with the Programmer-to-Go
The MPLAB PICkit 3 allows debugging and programming of PIC®and dsPIC®Flash microcontrollers at a most affordable price point using the powerful graphical user interface of the MPLAB Integrated Development Environment (IDE). The MPLAB PICkit 3 is connected to the design engineer\'s PC using a full speed USB interface and can be connected to the target via an Microchip debug (RJ-11) connector (compatible with MPLAB ICD 2, MPLAB ICD 3 and MPLAB REAL ICE).
 
Pakcage List:
1 PICKIT3
1 USB cable
1 6pin cable
 
 

 
Self-Made Feature:
1, HID interface, say no more driver again.
2, Support windows 7 system.
 
PICkit 3 Features
USB (Full speed 12 Mbits/s interface to host PC)
Real-time execution
MPLAB IDE compatible (free copy included)
Built-in over-voltage/short circuit monitor
Firmware upgradeable from PC/web download
Totally enclosed
Supports low voltage to 2.0 volts (2.0v to 6.0v range)
Diagnostic LEDs (power, busy, error)
Read/write program and data memory of microcontroller
Erase of program memory space with verification
Freeze-peripherals at breakpoint
Program up to 512K byte flash with the Programmer-to-Go
The MPLAB PICkit 3 allows debugging and programming of PIC®and dsPIC®Flash microcontrollers at a most affordable price point using the powerful graphical user interface of the MPLAB Integrated Development Environment (IDE). The MPLAB PICkit 3 is connected to the design engineer\'s PC using a full speed USB interface and can be connected to the target via an Microchip debug (RJ-11) connector (compatible with MPLAB ICD 2, MPLAB ICD 3 and MPLAB REAL ICE).
 
Pakcage List:
1 PICKIT3
1 USB cable
1 6pin cable
 
 

Antenna for SIM800L GPRS TCP IP module

4pcs=1pcs 5X7 1pcs 4X6 1pcs 3X7 1pcs 2X8
Description:
dimension: 5x7 4x6 3x7 2x8 cm
material : double Side Copper PCB
Hole Dia:about 1mm
hole pitch : standard 2.54mm
quantity :20pcs
for point to point DIY soldering
Packaging List:
1 * PROTOTYPE PCB 5*7
1 * PROTOTYPE PCB 4*6
1 * PROTOTYPE PCB 3*7
1 * PROTOTYPE PCB 2*8
 

 
Kit Name: NE555 CD4017 water light kit / parts
 
 
Power supply voltage: 2.5--14.5V
PCB size: 5.4cm * 2.1cm
PCB thickness: 1.6mm
 
Circuit:
The kit main circuit and decimal counter circuit generated by the clock, by the NE555 as the core of self-excited multivibrator power through R2, R3, R4 to charge the capacitor C1, C1 when the beginning of charging, NE555 2 feet still in low, so the output pin 3 goes high when the supply by R2, R3, R4 to charge C1 to 2/3 the power supply voltage, the output pin 3 level from high to low, NE555 internal discharge conduction the capacitor C1 through R4, R3, NE555 7 feet discharged until the voltage across C1 is less than 1/3 of the power supply voltage, NE555 3 feet level and from low to high .C1 and recharge, This cycle oscillation formed. Charging time: 0.695 (R2 R3 R4) C1, discharge time: 0.695 (R4 R3) C1, R4 may be adjusted to control the output frequency of the oscillator, the oscillation clock signal is applied continuously NE555 CD4017 14 feet, On 10 CD4017 is connected with the output of 10 LED, when 10 turns the output of CD4017 produce a high level in the clock signal is applied, the D1 - D10 are sequentially lit to form water lights effect.
Adjusting the flow rate can be adjusted R4 LED lamps.
 
Component parts list:
 
 
Elements Name Quantity
PCB board 1
2P bent pin 1
1UF capacitor 2
3mmLED Red 10
1K resistor 10
2.2K resistor 1
10K resistor 1
50K white blue potentiometer 1
NE555 1
CD4017 1

Applications:
Low-Power Wifi Module:ESP8266
Low-power Bluetooth module : HC-05 HC-06
Low-power Wireless UART module : HC-11 HC-12
Low-power wireless module : CC1101 CC2500 Nrf24l01
Low-power LED Driver
 
Description:
Low Noise, Regulated Charge Pump DC⁄DC Converter
2 in 1 DC-DC Step-Down & Step-Up Converter module
1. Fixed 3.3V -4% Output
2. Voltage Input Range: 1.8~5V ( You can use two of this module to use the 1.2V NiMH batteries).
3. Long time maximum output current 100mA
4. Short time maximum output current 150mA
5. working frequency 1.2MHz.
6. Short-Circuit Protection
7. No load input current : 0.65mA
8. 2.54mm pin pitch, for Breadboard MCU Development Board friendly
9. Excluding Pin Size 11mm x 7.62mm x 4.5mm(small)
10. Weight : about 0.5g
Attention :
This is a DC-DC voltage converter module, must be noted when using:
1. Input voltage can not be greater than the maximum input range
2. Output power can not be greater than the maximum load for a long time
3. Input power must be greater than the output power, because the power consumption of the module itself
 

TRRS 3.5mm stereo headphone MP3 audio video microphone Block Interface Modules

Embed version of Mega 2560 CH340G/ATmega2560 - compatible with Arduino Mega 2560 board. Built on the Atmel ATmega2560 microcontroller and USB-UART interface chip CH340G.
Board have compact size 38x55mm. It is good solution, to make your final project on solder proto-board.
Board for functionality similar to the Arduino Mega 2560. It is embed board, but the same stable, and uses the original chips ATmega2560 (16 MHz).
The board used the chip CH340G as converter UART-USB. When you work in the frequency 12Mhz, giving a stable result of data exchange (need install drivers to computer).
Mega PRO (Embed) 2560 CH340G / ATmega2560 - connects to the computer via microUSB cable (used for almost all Android smartphones).
You can supply power to board through the MicroUSB connector or to power pinheaders. The voltage regulator (LDO) can deal with incoming voltage from 6V to 9V (peack 18V) DC. Output current for 5V - about 800mA, for 3.3V - about 800mA (Please note that the higher the input voltage the lower the outgoing current). That will provide a reliable power most of your initial projects. 

 
  
 
 
 
 

You want to make a cool robot, maybe a hexapod walker, or maybe just a piece of art with a lot of moving parts. Or maybe you want to drive a lot of LEDs with precise PWM output. Then you realize that your microcontroller has a limited number of PWM outputs! What now?
 Using only two pins, control 16 free-running PWM outputs! You can even chain up 62 breakouts to control up to 992 PWM outputs
It's an i2c-controlled PWM driver with a built in clock. That means that, unlike the TLC5940 family, you do not need to continuously send it signal tying up your microcontroller, its completely free running!
It is 5V compliant, which means you can control it from a 3.3V microcontroller and still safely drive up to 6V outputs (this is good for when you want to control white or blue LEDs with 3.4  forward voltages)
6 address select pins so you can wire up to 62 of these on a single i2c bus, a total of 992 outputs - that's a lot of servos or LEDs
Adjustable frequency PWM up to about 1.6 KHz
12-bit resolution for each output - for servos, that means about 4us resolution at 60Hz update rate
Configurable push-pull or open-drain output
Output enable pin to quickly disable all the outputs
We wrapped up this lovely chip into a breakout board with a couple nice extras
Terminal block for power input (or you can use the 0.1" breakouts on the side)
Reverse polarity protection on the terminal block input
Green power-good LED
3 pin connectors in groups of 4 so you can plug in 16 servos at once (Servo plugs are slightly wider than 0.1" so you can only stack 4 next to each other on 0.1" header
"Chain-able" design
A spot to place a big capacitor on the V  line (in case you need it)
330 ohm series resistors on all the output lines to protect them, and to make driving LEDs trivial
Solder jumpers for the 6 address select pins

Description:
100% brand new and high quality
Knock sensor module and a digital 13 interface, built-in LED build a simple circuit to produce percussion flasher. Interface comes with digital LED, will knock sensor connected digital 3 interface, when percussion sensor senses measure to percussive signals, LED flashing light.
Size: 30x18x6mm (approx)
Routines source code:
int Led = 13;// define LED Interface
int Shock = 3;// define the percussion Sensor Interface
int val;// define numeric variables val
void setup ()
{
pinMode (Led, OUTPUT) ;// define LED as output interface
pinMode (Shock, INPUT) ;// define knock sensor output interface
}
void loop ()
{
val = digitalRead (Shock) ;// read digital interface is assigned a value of 3 val
if (val == HIGH) // When the percussion when the sensor detects a signal, LED flashes
{
digitalWrite(Led, LOW);
}
else
{
digitalWrite(Led, HIGH);
}
}
 
 
Package includes:
Knock Sensor Module x 1
 

Electrical properties
1.Electrical parameters:  JSN-SR04T 
2.Operating voltage:  DC 5V 
3.Quiescent current:  5mA 
4.Total current work:  30mA 
5.Acoustic emission frequency:  40khz 
6.Farthest distance:  4.5m 
7.Blind: 25cm 
8.Wiring:    5V (positive power supply) 
                Trig (control side) RX 
                 Echo (the receiver) TX 
                GND (negative) 
9.Resolution:  about 0.5cm 
10.Angle:  less than 50 degrees 
11.Working temperature:  -10 ~ 70 Celsuis
12.Storage temperature:  -20 ~ 80 Celsuis
 
Product Features
1.Small size, easy to use
2.Low voltage, low power consumption
3.High accuracy
4.Strong anti-jamming
5.Integrated with wire enclosed waterproof probe, suitable for wet, harsh measurement occasions
 
Application
1.Horizontal distance; 
2.Obstacle avoidance, automatic control; 
3.The object approaches, there is a perceived 
4.Traffic control; 
5.Security, industrial control; 
6.Artificial intelligence, and research
 
 

Electrical properties
1.Electrical parameters:  JSN-SR04T 
2.Operating voltage:  DC 5V 
3.Quiescent current:  5mA 
4.Total current work:  30mA 
5.Acoustic emission frequency:  40khz 
6.Farthest distance:  4.5m 
7.Blind: 25cm 
8.Wiring:    5V (positive power supply) 
                Trig (control side) RX 
                 Echo (the receiver) TX 
                GND (negative) 
9.Resolution:  about 0.5cm 
10.Angle:  less than 50 degrees 
11.Working temperature:  -10 ~ 70 Celsuis
12.Storage temperature:  -20 ~ 80 Celsuis
 
Product Features
1.Small size, easy to use
2.Low voltage, low power consumption
3.High accuracy
4.Strong anti-jamming
5.Integrated with wire enclosed waterproof probe, suitable for wet, harsh measurement occasions
 
Application
1.Horizontal distance; 
2.Obstacle avoidance, automatic control; 
3.The object approaches, there is a perceived 
4.Traffic control; 
5.Security, industrial control; 
6.Artificial intelligence, and research