Kereskedelmi, irodai és ipari

Description: The multifunction relay control module, designed specifically for a variety of users with different needs, the use of micro-controller as the primary Control unit, preset 18 kinds of functions. Specification: Dimensions: 77mm * 50MM*20MM(L*W*H) Screw size: 4*3mm(diameter) Screw holes center distance: 59mm*33MM Function: 1.Timing pull in 2.Timing disconnected 3.Timing pull in and disconnected. 4.Timing off then pull in 5.Infinite loop timing mode 1 6.Infinite loop timing mode 2 7.Finite loop timing mode 1 8.Finite loop timing mode 2 9.Self-lock relay mode 10.Trigger relay mode 11.Trigger timing pull in 12.Trigger timing disconnected 13.Trigger timing pull in and disconnected. 14.Trigger timing disconnected and pull in 15.Infinite loop timing mode 1 16.Infinite loop timing mode 2 17.Finite loop timing mode 1 18.Finite loop timing mode 2 Module Interface: Module control terminal: 3-wire port, all interfaces are terminal,very easy to use. DC : DC positive power(with 5V, 12V and 24V modules to choose from) DC-: DC negative power. CH1: input detected port, high level effective. CH2: input detected port, high level effective. Relay outputs: 3-wire port, all interfaces are terminals NO: relay normally open port, relay pull in before as the vacant,after pull in with the COM1 short connection. COM: relay common port. NC: relay normally closed port, relay with COM1 short connection before pull in, vacant after pull in. Load capacity: normally open port maximum load capacity: DC 0-30V / 10A, AC 0-250V / 10A. Normally closed port maximum load capacity: DC 0-28V / 10A, AC 0-125V / 10A Package Included: 1pcs * Multifunction Self-lock Relay Cycle Timer Module PLC Delay Module

Product Parameters:
Resolution: 500dpi
Supply current: <60mA
Supply voltage: 3.3V
Fingerprint image entry time: <1.0 seconds
Peak current: <60mA
Window area: 15.3x18.2MM
Communication Interface: USB/UART
How the Module Works:
1. Fingerprint features
The fingerprint algorithm extracts features from the acquired fingerprint image and represents the fingerprint information. The storage, comparison and search of fingerprints are all done by operating fingerprint features.
2. Fingerprint processing includes two processes: fingerprint registration process and fingerprint matching process (in which fingerprint matching is divided into fingerprint comparison (1:1) and fingerprint search (1:N) two ways).
When the fingerprint is registered, two fingerprints are entered for each fingerprint, and the input image is processed twice. The synthesis module is stored in the module.
When the fingerprint is matched, the fingerprint sensor is used to input the fingerprint image to be verified and processed, and then it is compared with the fingerprint module in the module (if it is matched with a module specified in the module, it is called fingerprint comparison mode, ie, 1:1 mode. If matching with multiple modules is called fingerprint search, ie 1:N mode, the module gives the matching result (pass or fail).

STM32G070RBT6 core board development board MCU embedded learning kit

1. Onboard TCS3200 color sensor
2. Support 3V-5V voltage input
3. All the pins of the chip have been led out, and the pins are standard 100mil (2.54mm), which is convenient for dot matrix board
4. PCB size: 31.6(mm)x24.4(mm)
The simple test procedure is as follows:
#include
#define uchar unsigned char
#define uint unsigned int
sbit S0=P1^0; //S0, S1 is to set the duty cycle of the output
sbit S1=P1^1;
sbit S2=P1^3; //S2, S3 are the modes for setting the filter
sbit S3=P1^4;
sbit OE=P1^2; //Enable
void RS232_init()
{
TMOD=0X20; //Timer 1 works in mode 1
SCON=0x50;
PCON=0X80; //
TH1=TL1=0XFF;//22.1184M crystal oscillator, the baud rate is set to 115200
TR1=1;
TI=0;
RI=0;
}
void send_char(uchar a) //Send data
{
SBUF=a;
while(TI==0);
TI=0;
}
uchar get_char() //Receive data
{
while(RI==0);
RI=0;
return SBUF;
}
uint color_display(uchar m)
{
uint time,a;
a=m;
TMOD=0x61; //Counter 1, Timer 0 works in 16-bit mode
TH0=TL0=0; //Start counting from zero, timing
TH1=TL1=0;
S0=1;
S1=1;
S2=m&0x01;
S3=m&0x02;
OE=0;
TR0=TR1=1;
while(TL1<250);
TR1=TR0=0;
OE=1;
time=TH0*256 TL0;
return(time);
}
void main()
{
uint temp;
RS232_init();
OE=1;
while(1)
{
temp=color_display(get_char());
RS232_init();
send_char(temp/1000);
send_char(temp% 1000/100);
send_char(temp% 100/10);
send_char(temp% 10);

PCM2704 parameters:
Supply voltage: 5 V (USB to take power).
Distortion: THD N: 0.006% (RL> 10 k)
Distortion: THD N: 0.025% (RL = 32 )
Signal to Noise Ratio: 98 dB,
Dynamic range: 98 dB
Headphone output power: 12 mW (RL = 32 )
Support the sampling rate: 16Bit 32k, 44.1k, 48k
USB support system: WINXP/WIN7/WIN8
Apple System: MAC OS 9/OSX
Android system: 4.1 or above (requires support for OTG models)

Send the line! Send the line!
Compared with the old version, there are more relay controls and digital tubes!
technical parameter:
1. Product name: ZS5100 development board
2. Main control chip: STC89C52
3. Crystal frequency: 11.0592M/12M
4. Input voltage: DC5V
5. Output voltage: DC5V
6. Power supply mode: external 5V DC power supply, USB interface power supply
7.PCB size: 90MM*77MM
Onboard resources:
1. ISP download interface (available when using AT89S52 or ATMEGA16)
2. Active buzzer
3. Power switch
4. Power indicator
5. Data receiving and sending indicators
6.USB communication interface
7. PL2303 communication chip
8. DS18B20 temperature sensor interface
9.38K infrared receiver interface
10.4-bit integrated digital tube interface
11. ZIF pluggable chip holder
12.LCD1602 LCD screen interface
13.LCD12864 LCD screen interface
14.8-bit LED
15. All pins of the microcontroller are led out by pin headers
16. LCD contrast adjustment potentiometer
17.4 independent buttons
18.1 reset button
19. Relay circuit
20.4 positioning holes
Shipping list:
1. A ZS5100 development board
2. One USB cable (male to male)

The SP200S programmer is an improved design based on the popular SP180S programmer. It directly uses the USB interface for communication and power supply. It has a small size, mature software and hardware design, and complete functions. It is currently a professional programming control software. Free programmer. It can support MCS51 series microcontrollers commonly used by ATMEL/WINBOND/SST companies, and support 24 and 93 series serial memories of ATMEL/MICROCHIP/ST and other companies. The enhanced version also has a standard ISP download interface, which can support online download programming (ISP) of ATMEL's MCS51 series and AVR series microcontrollers. SP200S programmer can not only meet the needs of MCU enthusiasts and developers to learn and develop 51 and AVR MCU, but also very suitable for home appliance maintenance personnel to program 93 series and 24 series EEPROM needs.
Programmer hardware and software features, compatible with SP200SE Enhanced USB Programmer 51 Programmer
Commodity name: MCU, memory chip programming burner
Commodity application: programming Atmel, Microchip, SST, ST, WINBOND and other series of microcontrollers and EEPROM
Features:
The compact, easy to carry
USB interface for communications and power supply,high communication speed, no external power supply
Single 40Pin locking design,support 8PIN, 20PIN and 40PIN chip
Built-in CPU, programming speed, precise timing, not affected by computer configuration
Powerful, easy to operate, the hardware without any manual settings
Software Features
Friendly interface, professional full-featured design
Buffer editing capabilities, support for copying, filling, logic operations, data supporting 8 and 16 display
Simplified Chinese user interface
support WIN98SE/ME/2K/XP and other operating systems
System configuration requirements of low, stable operation
Programming commands, including programming, read, erase, blank check, verify, encrypt (write lock), fuse bits read and write, read and write configuration bits ...
Statistical functions, automatic statistics the number of programming success and failure
The serial number function applies a unique ID data is written to the product
Support automatic programming operation (equivalent to the batch), and can customize its operation content
Recent list of files to quickly load the files have been used
The device list functionality to quickly change the device for the recent use of other devices
Programming operation sound
File changes automatically re-loaded for rapid development phase to update the chip content

Product Description:
 
Feature:
Chip: TCS230
Input voltage: DC 3V-5V
Output frequency voltage: 0 ~ 5V
Use bright white LED lights
can be connected directly with Microcontroller
Static detection of the measured object color
Best detection distance: 10mm

Specification:
100% brand new and high quality
Size: As picture shows
Input Power: DC5V ± 0.25V / 2A
Output: 1A
Charging Efficiency: 75%
The Transmission Distance: 2-8mm
The Implementation of Standards: Qi wireless charging standard
Product Certification: CE / FCC / ROSH
Fine workmanship and stable performance.
Long service life.
Package included:
1 x Wireless Charger Transmitter Module Coil PCBA Circuit Board
Note:
Due to the hand measurement, there have size error about 1-3cm
Item color displayed in photos may be showing slightly different on your computer monitor since monitors are not calibrated same

Power Model:XK-2412-24
Protection: overvoltage overcurrent circuit protection
AC input: AC85-265V (Global common)
AC frequency: 50HZ/60HZ
Output voltage: DC 24V
Output Current: 4A-6A
Output Power: 100W
Modulation: Pulse width modulation

mallest SIM800L GPRS GSM Module MicroSIM Card Core BOard Quad-band TTL Serial Port
Description:
Chip: SIM800L
Voltage: 3.7-4.2V
Support networks: China Mobile, China Unicom and global quad-band network
Module size: 2.5cmx2.3cm
TTL serial port for serial port, you can link directly to the microcontroller. No need MAX232
Power module automatically boot, homing network
Onboard signal lights all the way . It flashes slowly when there is a signal, it flashes quickly when there is  no signal
Package Included:
1 X SIM800L GPRS GSM Module

Features
-This product with wide frequency range, high gain, low noise figure
-This product can be applied to various rf receive front-end and increases communication distance
-Used for Short wave, FM radio, remote control receiver, such as cable TV signal amplifier need low noise rf signal amplification
Specifications
Size：25*52mm
Diameter of end: 5mm
Color：green gold
Operating frequency：0.1-2000MHz
Amplifier gain：
F=0.1MHz, gain=32dB
F=500Mhz, gain=31dB
F=1000MHz, gain=29dB
F=1500Mhz, gain=25dB
F=2000MHz, gain=20dB
Maximum power output： 10dBm （10mW）
Power supply voltage: 6-12 VDC
System impedance：50Ω
Tips：
1.When working frequency is less than 500 MHZ，it get well gain flatness, can make it less than 1dB after careful adjustment. The lower frequency the higher gain consistency.
2.Amplifier working frequency of the lower limit is subject to input and output capacitor, the default value is 0.1 uF, working to 0.1 MHz. Increase the input and output capacitance appropriately,can extend the cut-off frequency, such as 10uF capacitance can work to 5KHz.
3.When the power supply voltage changes in 5-8 v, it can be used as a variable gain amplifier, gain increases with the increase of the power supply voltage, which suitable for radio frequency receive front-end circuit, using DA control power supply voltage, to control the gain of the amplifier, automatic gain control
4.When the power supply voltage in the 8-10 v, the low frequency end gain up to 30 db, at this time the amplifier has a low noise coefficient and good stability.
5.When the voltage is 12 v, reach maximum gain, the low frequency end gain of 32.5 dB,
Package Include:
1PCS 0.1-2000MHz RF Wideband Amplifier 30dB low-noise LNA Broadband Module Receiver

Description:
 
The intelligent controller includes an SD card reader, rotary encoders and a 20-character
× 4 line LCD display. You can easily connect it to your RAMPS 1.4 board using "smart
adapter" included.
This panel connect your RAMPS 1.4, you do not need your computer, your SD card
intelligent controller power supply. All further operations, such as calibration, the axis
movement can be done only with a rotary encoder intelligent controller. 3D design print
without a computer, just use the G code design stored on the SD card.
​1*2004LCD
1*Adapter
2*Cable

Specifications
Product Name: 2 Way Frequency Divider
Intersect Frequency:2600Hz
Frequency Response: 48Hz-20KHz
Filter Circiut: Low (12db / oct)
                    High (12db / oct)
Impedance: 4-8 ohm
Rated Power: 200W
Size: 137 * 90mm

Features:
1: Widely used
2: High performance-price ratio
3: Simple and easy to operate
4: There are two options: terminal and without terminal
5: Small appearance
Parameter Description:
Working voltage: 9-80V
Working current: 50A (It is recommended to strengthen heat dissipation when using more than 25A)
Working internal resistance: 2 milliohms
Circuit board size: 44*18mm
Weight: 12g/15g
100V/300A high current 2 milliohm low internal resistance MOS
Special note:
The voltage drop is 0.04V. If you want to measure the input and output voltage drop values, please connect to the 9V-80V power supply and measure again. The management IC will not work when there is no power input!
Note: the ground wire must be connected
Package Included:
1* diode module

Notice! : The screen needs to be matched with a 0.96-inch 1306 driven VCC GND pin header sequence

Development board introduction
STM32G070CBT6 is based on Cortex-M0 core and runs at up to 64MHz
128KB Flash 36KB SRAM with parity check
Built-in 1% precision 16MHz RC oscillator Built-in 32KHz RC oscillator
Onboard high-precision 12MHz high-speed crystal oscillator 32.768KHz low-speed crystal oscillator
Working temperature -40℃~85℃
5 general purpose timers, 2 basic timers, 1 advanced timer
19 ADC channels
USART×4, I2C×2, SPI×2, I2S×1
Onboard power status display LED, user LED, a reset button and a user button
The IO pins of the development board are all led out
Support 3.3~5V power supply
The size of the development board is 52.3mm×23.8mm, which can be directly inserted into the hole board and breadboard
All routines use CubeMX & MDK (keil), easy to use
Can be plugged directly into the LCD screen

Working voltage:3.3~30V;
Frequency range:1Hz~150KHz;
Frequency accuracy:accuracy is about 2% in each range.
Signal load capability:output current can be around 5~30ma;
Output amplitude:PWM amplitude is equal to supply voltage.
Ambient temperature:-20~ 70 C.
Module description
PWM output can set frequency and duty cycle respectively.
Frequency is divided into four areas: automatic switching:
1.XXX (without decimal point): the smallest unit is 1Hz, and the value range is 1Hz~999Hz;The minimum unit of 
2.X.XX (decimal point in 100 bits) is 0.01Khz, and the value range is 1.00Khz~9.99Khz;
3.XX.X (decimal point in ten places): the smallest unit is 0.1Khz; and the range is 10.0KHz~99.9KHz.
4.X.X.X (decimal point in ten bits and 100 bits): the smallest unit is 1Khz; and the range is 1KHz~150KHz.E.g. frequency display: 100 indicates PWM output 100Hz pulse;1.01 represents the pulse of PWM output 1.01K.54.1 represents the pulse of PWM output 54.1KHz.1.2.4 indicates the pulse of PWM output 124KHz.Duty cycle:0~100% ;All settings are saved by power down.
Parameter setting
Module has four independent keys, used to set the frequency and duty cycle, support short press (increase or decrease a unit) and long press (quickly increase or decrease), very simple, set the parameters automatically save, power loss is not lost.
Scope of application:
1.is used as a square wave signal generator to generate square wave signals for experimental development.
2.is used to generate square wave signals that control motor drives.
3.generate adjustable pulse for MCU use;
4.generate adjustable pulses to control related circuits (PWM dimming and speed regulation applications).
Size:7.8x4.2x2.6cm/3.07x1.65x1.02inch
Note:
Please allow 1-3mm error due to manual measurement.pls make sure you do not mind before you bid.
Due to the difference between different monitors,the picture may not reflect the actual color of the item.Thank you!
 
Package Includes:
1x PWM Pulse Frequency Duty Cycle Adjustable Module

Description:
The VL53L1X is a state-of-the-art, Time-of-Flight (ToF), laser-ranging sensor, enhancing the ST FlightSense™ product family. It is the fastest miniature ToF sensor on the market with accurate ranging up to 4 m and fast ranging frequency up to 50 Hz
Unlike conventional IR sensors, the VL53L1X uses ST’s latest generation ToF technology which allows absolute distance measurement whatever the target color and reflectance.
It is also possible to program the size of the ROI on the receiving array, allowing the sensor FoV to be reduced.
Key Features
Fully integrated miniature module
Emitter: 940 nm invisible laser (Class1)
SPAD (single photon avalanche diode) receiving array with integrated lens
Low-power microcontroller running advanced digital firmware
Pin-to-pin compatible with the VL53L0X FlightSense™ ranging sensor
Fast and accurate long distance ranging
Up to 400 cm distance measurement
Up to 50 Hz ranging frequency
Typical full field-of-view (FoV): 27 °
Programmable region-of-interest (ROI) size on the receiving array, allowing the sensor FoV to be reduced
Programmable ROI position on the receiving array, providing multizone operation control from the host
Easy integration
Single reflowable component
Can be hidden behind many cover window materials
Software driver and code examples for turnkey ranging
Single power supply (2v8)
I⊃2;C interface (up to 400 kHz)
Shutdown and interrupt pin

Description
RCWL-0801 is a ranging module that can be powered by 3.3V-5V and uses high-quality laser ranging sensor VL53LOX. The module uses a high-performance MCU, which integrates the VL53L0X arithmetic filtering algorithm, and can directly output the measured distance value through the serial port.
Parameter
1.Using high-quality laser ranging sensors 2. The sensor uses a Class 1 laser, which complies with the standard ICE 608251: 2014. It has no harm to human eyes 3.3.3V-5V wide voltage power supply 4. Working current: 30mA 5. Static current: 16mA 6. Small test period: 30mS 7. Wide measurement range: 0-200cm (effective within 1.2M) 8. Product size: 1.25 * 1.25cm 9.Lead-free process VCC: power supply RX: Module string input TX: module string output GND: ground
Parameter
Working voltage: 3-5.5V Working current: 30mA (typic) 35mA (max) Static current: 15mA-17mA (16mA typic) Detection distance: 120-200cm (120 typic) Detection accuracy: ± 1% Resolution: 1mm Detection angle: ± 15 degrees Measurement cycle time: 22-180ms (35 typic) Output interface mode: UART Working temperature: -10-90 ℃
Application
Distance measurement in long distance mode 1. Connect the hardware 2. Confirm the current baud rate (if known, this step is not required). Select three baud rates of 9600N1, 192001, and 15200N1 to input DO data. If DO is returned, it indicates that the baud rate is the module's current baud rate 3. Enter CO, PC serial port software gets CO. Long distance mode is set successfully 4. Enter A0, and the serial port software on the PC side will get two 8-digit hexadecimal data, which is converted into I0 base to measure the distance (unit: mm)
 
 

1

The PD trigger uses the hardware protocol IC, and the compatibility is not comparable to the soft solution.
Maximum power support to 100W, excellent compatibility.
The version with USB uses a 5A high current PAL female base with a small internal resistance.
Large-capacity ceramic capacitor filtering, TVS anti-surge anti-reverse connection, Japan ALPS tact switch, focusing on stability.
With USB soldering position and 5.08 screw terminal soldering position, it is convenient to make Type-C to DC adapter cable.
Small size 15mm wide * 30mm long, soldered DC line heat shrinkable tube can be used to charge your notebook with PD mobile power.
 
The module industrial grade specification:
Withstand voltage between positive and negative 20V between any two terminals of industrial grade, the input voltage is reversed
Effectively prevent problems such as VBUS short circuit to CC burning during testing.
It is very suitable for test fixtures to directly measure the bare power module without flying the assembly.
Or DIY fast charging lure with plug, no hardware switch is not easy to accidentally touch the voltage.
When using the 5A-EMARK line DIY, the maximum power is supported to 100W, and the compatibility is excellent.
The hole pitch is 2.54mm, which is convenient for the welding pin to be inserted into other motherboards.
TRIG foot-to-ground connection is equivalent to button press, which can be triggered by optocoupler or relay isolation.
If CC1 or CC2 is connected to the male, you only need to pick one of them.
The rest of the operation is exactly the same as the regular version.

The PD trigger uses the hardware protocol IC, and the compatibility is not comparable to the soft solution.
Maximum power support to 100W, excellent compatibility.
The version with USB uses a 5A high current PAL female base with a small internal resistance.
Large-capacity ceramic capacitor filtering, TVS anti-surge anti-reverse connection, Japan ALPS tact switch, focusing on stability.
With USB soldering position and 5.08 screw terminal soldering position, it is convenient to make Type-C to DC adapter cable.
Small size 15mm wide * 30mm long, soldered DC line heat shrinkable tube can be used to charge your notebook with PD mobile power.
 
The module industrial grade specification:
Withstand voltage between positive and negative 20V between any two terminals of industrial grade, the input voltage is reversed
Effectively prevent problems such as VBUS short circuit to CC burning during testing.
It is very suitable for test fixtures to directly measure the bare power module without flying the assembly.
Or DIY fast charging lure with plug, no hardware switch is not easy to accidentally touch the voltage.
When using the 5A-EMARK line DIY, the maximum power is supported to 100W, and the compatibility is excellent.
The hole pitch is 2.54mm, which is convenient for the welding pin to be inserted into other motherboards.
TRIG foot-to-ground connection is equivalent to button press, which can be triggered by optocoupler or relay isolation.
If CC1 or CC2 is connected to the male, you only need to pick one of them.
The rest of the operation is exactly the same as the regular version.

The PD trigger uses the hardware protocol IC, and the compatibility is not comparable to the soft solution.
Maximum power support to 100W, excellent compatibility.
The version with USB uses a 5A high current PAL female base with a small internal resistance.
Large-capacity ceramic capacitor filtering, TVS anti-surge anti-reverse connection, Japan ALPS tact switch, focusing on stability.
With USB soldering position and 5.08 screw terminal soldering position, it is convenient to make Type-C to DC adapter cable.
Small size 15mm wide * 30mm long, soldered DC line heat shrinkable tube can be used to charge your notebook with PD mobile power.
 
The module industrial grade specification:
Withstand voltage between positive and negative 20V between any two terminals of industrial grade, the input voltage is reversed
Effectively prevent problems such as VBUS short circuit to CC burning during testing.
It is very suitable for test fixtures to directly measure the bare power module without flying the assembly.
Or DIY fast charging lure with plug, no hardware switch is not easy to accidentally touch the voltage.
When using the 5A-EMARK line DIY, the maximum power is supported to 100W, and the compatibility is excellent.
The hole pitch is 2.54mm, which is convenient for the welding pin to be inserted into other motherboards.
TRIG foot-to-ground connection is equivalent to button press, which can be triggered by optocoupler or relay isolation.
If CC1 or CC2 is connected to the male, you only need to pick one of them.
The rest of the operation is exactly the same as the regular version.

Charging mode IN
By setting the upper limit voltage UP and the lower limit voltage dn; when the battery voltage is less than or equal to the lower limit voltage dn, the relay turns on and the charger starts charging the battery; when the battery voltage is more than or equal to the upper limit voltage UP, the relay disconnects to complete an automatic charging; when the relay turns on, IN flickers, indicating that it is charging.
 
Discharge mode OUT
 
By setting the upper limit voltage UP and the lower limit voltage dn; when the battery voltage is greater than or equal to the upper limit voltage UP, the relay turns on and starts discharging; when the battery voltage is less than or equal to the lower limit voltage dn, the relay turns off and completes an automatic discharging function; when the relay turns on, the OUT flickers, indicating that it is discharging.
Note: This product is a simple voltage controller. It can turn on and off the output by relay. It only plays the role of switching, and can not change the voltage.
Functional description:
1.     Calculation of Voltage Percentage: Battery Voltage/(Upper Voltage-Lower Voltage)
2. Key function:
Short press UP button, switch display% and time, long press 5 seconds switch mode, charging mode: IN, discharge mode: OUT
SET key: Short Click to view the parameters currently set;
Long press SET button to enter the parameter setting interface, set UP: voltage upper limit, dn: voltage lower limit, OP: turn-on time, dOP: delay turn-on time (0-999 seconds), FOP: forced turn-on time (0-10 seconds) in discharge mode.
Short press DOWN button, turn off/turn on relay enable (emergency stop function) turn off, LCD display OFF, relay disconnect
Long press DOWN button to set the status of LCD backlight L-P: OFF backlight constant brightness, ON: backlight automatically extinguishes after 5-10 minutes; after extinguishing, any key wakes up.
3. Parameter Settings
(a) Enter the parameter setting interface by pressing the SET key for a long time;
B) After entering the parameter setting interface, switch the setting parameters by pressing the SET key.
C) After choosing parameters, it can be set by UP/DOWN key to support short press and long press.
D) To set other parameters, repeat steps B and c;
E) After all parameters are set, press SET key for a long time, exit and save;
3.1 Charging/Discharging Time Control Function
When the time parameter OP is non-zero, start charging/discharging time control.
When the relay turns on a charge/discharge, the countdown begins; when the time is completed, the relay is automatically disconnected to complete a charge/discharge process; if the time is completed, in the charging mode, the detection voltage is less than the lower limit voltage dn or in the discharge mode, the detection voltage is more than the upper limit voltage UP, and the charging time control function is automatically turned off and flashes. Indicate H: ER reminds users that time parameter setting is unreasonable; press any key to stop flickering;
When the charging/discharging time control is not turned on, the product will record a complete time. When entering the time display interface, flashing shows the charging time, then exiting the time display interface or clearing the next time the charging is turned on (relay is turned on).
3.2 Automatic parameter detection:
When the parameters are set and exit, if the lower voltage limit DN is greater than the upper voltage up, the system will flicker to display "ERR" as a reminder.
3.3 Delayed turn-on function (0-999 seconds): completion of a charge/discharge, the interval between re-opening;
3.4 Discharge Conduction Forced Start Time (0-10S): After satisfying the relay conduction condition, the relay is forced to turn on (0-10S) to detect the battery voltage again. This function is mainly aimed at discharging function. Some test loads will pull down the lower limit voltage instantaneously at the moment of conduction, which will lead to the disconnection of the relay and the failure of normal discharge process.
Analysis of Common Faults
Q: How many V levels are suitable for use? How many V voltage does this module fit?
Answer: This model is suitable for use in the range of minimum 6V, maximum 60V voltage and maximum expenditure level 48V, because 48V battery is full of electricity at about 60V, and then burns at a higher level. If your battery is higher than 48V, please choose another one.
Question: The relay clicks after power-on! Does the light flicker?
Answer: This is because your charging current is too large or the battery capacity is too small. Once the battery is powered up, it immediately reaches the upper voltage limit. The relay is disconnected. After disconnection, the voltage quickly drops to the lower voltage limit and starts charging again. At this time, you need to reduce the charging current. Usually, the charging current is 10% of the battery capacity. From 1 to 1.5, the charging current of 20AH batteries is generally about 2-3A. Note that high current charging can cause battery heating, accelerated aging, bulging and even explosion!
Question: What control method? Can it be recharged automatically? Can you fill it while you use it? Can we limit the current?
Answer: This is voltage control, such as setting the lower limit of voltage 12.0V, the upper limit of voltage 14.5V, when the voltage is charged to 14.5V, the power is cut off, the voltage is lowered to 12.0V and the relay is closed to start charging; while charging, the voltage control mode can only switch on and off, not limit the current, the charging current depends entirely on your charger!
Question: Can I charge a 24V battery with 12V input, or can I charge a 12V battery with 48V input?
Answer: This is a simple voltage controller. It only plays a switching role. It can't change the voltage to charge the battery. So what kind of charger should you prepare to charge the battery? Necessary!
 

Specification:
100% brand new and high quality
Size: As picture shows
Input Power: DC5V ± 0.25V / 2A
Output: 1A
Charging Efficiency: 75%
The Transmission Distance: 2-8mm
The Implementation of Standards: Qi wireless charging standard
Product Certification: CE / FCC / ROSH
Fine workmanship and stable performance.
Long service life.
 
Package included:
1 x Wireless Charger Transmitter Module Coil PCBA Circuit Board
 
Note:
Due to the hand measurement, there have size error about 1-3cm
Item color displayed in photos may be showing slightly different on your computer monitor since monitors are not calibrated same

CP2102:
Parameter:
USB serial port CP2102
LED green light: status indicator (intercommunication status indication), LED red light: communication status indication, flashing data light
One-button setting interworking mode: press once to switch the interworking path
4 LED green, the corresponding light is on, only the corresponding channel is connected
Support Windows 98/ME/2000/XP/Win7/Win8/Win10, 32-bit/64-bit system
Support USB serial port TTL, UB to RS232 serial port, USB to RS485 serial port
Support dual channel serial test voltage function (range: 0~ 30V)
System parameter setting is not lost after power-off. After power-on, keep the last state, press the button, power on again, and the channel continues before the intercom mode.
USB serial port and TTL serial port:
In essence, it is a serial port. USB is a chip with USB to serial port TTL. The interface form is recognized on the computer as a COM device, TTL wireless serial port, the serial port level is TTL, and can be directly connected to the single-chip serial port.
CH340G:
Product Parameters:
USB serial port CH340G,
LED green light: status indicator (intercommunication status indicator), LED red light: communication status indicator, data light flashes.
One key to set the intercommunication mode: press the button once to switch the intercommunication channel once,
4 LED green lights, the corresponding lights are on, indicating that the corresponding channels are interoperable
Support WINDOWS98/ME/2000/XP/Win7/Win8/Win10 32-bit/64-bit system.
Support USB string TTL, USB to RS232 serial port, USB to RS485 serial port
Support dual-channel serial port test voltage function (range: 0~30V)
The system parameter settings will not be lost after power-on. After power-on, the last state will be maintained. After pressing the key and power-on again, the channel continues to the previous intercommunication mode.
USB serial port and TTL serial port:
In essence, they are all serial ports. USB is a chip that adds USB to serial port TTL. The interface format is recognized on the computer as a COM device, TTL wireless serial port, and the serial port level is TTL, which can be directly connected to the MCU serial port.

ASR02 intelligent speech recognition module, voice module, serial port burning, customizable entry, voice broadcast

The MCP4725 is a 12-channel buffered voltage output DAC with non-volatile memory (EEPROM) of. The user can configure the register bit (2) and DAC input data (12) stored in nonvolatile EEPROM (14-bit) memory. By setting the configuration register bits DAC can be configured as a normal mode or power-saving shutdown mode. The device uses a two-wire I2C-compatible serial interface, and a voltage range of 2.7V to 5.5V single supply.
Description: You've always wanted to output analog voltages from a microcontroller, the MCP4725 is the DAC that will let you do it The CJMCU-MCP4725 is an I2C controlled Digital-to-Analog converter (DAC) A DAC allows you to!. send analog signal, such as a sine wave, from a digital source, such as the I2C interface on the microcontroller. Digital to analog converters are great for sound generation, musical instruments, and many other creative projects!
This version of the CJMCU-MCP4725 Breakout fixes a few issues with the board including the IC footprint, the I2C pinout, changes the overall board dimensions to better fit your projects, and a few more minor tweaks. This board breaks out each pin you will need to access and use the MCP4725 including GND and Signal OUT pins for connecting to an oscilloscope or any other device you need to hook up to the board. Also on board are SCL, SDA, VCC, and another GND for your basic I2C pinout. Additionally, if you are looking to have more than one MCP4725 on a bus, the pull-up resistors on this board can be disabled just check the Hookup Guide in the Documents section below for instructions and tips on doing this.
Features:
12-bit resolution
I2C Interface (Standard, Fast, and High-Speed supported)
Small package
2.7V to 5.5V supply
Internal EEPROM to store settings

Electrical parameters:
Input voltage range: DC5V-35V, AC5V-22V
Output voltage range: DC1.25V-30V (continuously adjustable)
Output current range: maximum continuous working current <3A (input and output DC voltage difference does not exceed 10V), please ensure output current <2A when input and output DC voltage difference exceeds 10V, peak current can reach 5A
Operating temperature range: 0°C-100°C (in order to prevent over-temperature damage, you can increase the heat dissipation by yourself or use other active heat dissipation methods)
Dimensions (length, width and height): 86mm X 48mm X 32mm
Note: The voltage regulator LM338K of this board is a disassembled part. Please note that it is a brand-new domestic LM338K, and the output current will not exceed 2A and it will burn out.
As an excellent linear regulator, LM338K has the characteristics of high stability, high temperature resistance and high linearity. 5A needs to increase the radiator or increase the active cooling measures). The board is equipped with an 8A rectifier bridge (with heat sink), and is equipped with an input filter capacitor of 4400uF and an output filter capacitor of 2200uF, which can effectively reduce output ripple and interference. It is suitable for electrical appliances, equipment, audio, digital power amplifiers, etc. with power supply below 30V, and provides power with low internal resistance and low ripple.

Description
1.The crossover is suitable for a treble mid bass speakers. The speaker is suitable for 4-8 ohms. The finished products are also mostly used for better coordination. Sound quality, give debugging accessories at the same time of purchase.
2.The crossover is a popular finished product, which is connected to a variety of speakers. It is suitable for high and medium bass, and the sound quality is best; but not all speakers and all crossovers are the best fit. After use, there may be too much or too little treble, low frequency and low frequency of the bass, low frequency, or too thick bass, and too much or too little high frequency component in the midrange. It is.
3.No matter how good the parameters are, it is always the reference data. The sound quality is ultimately determined by the listener. Some people like to listen to treble. Some people like to listen to the bass, and some people like the midrange. Even if the parameters are very consistent, they match the different speakers. After that, the sound quality does not match the taste of the listener. People don't like this kind of sound, and there is no way to change it. When the frequency divider is connected, the next step of debugging is to solve the feeling of different requirements of each person, debugging and debugging, and the effect sound listener likes to use that sound. Refer to the instruction paper for the debugging procedure, and you can safely debug it, all within the scope of the speaker.
Treble debugging: 1: Just after the connection, there is no need to debug. 2: Change the mid-high frequency component of the treble. 3: Change the middle and high frequency components of the high pitch.
Midrange debugging: 1: Just after the connection, there is no need to debug. 2: Change the mid-high frequency component of the midrange to increase and decrease. 3: Change the mid-low frequency component of the midrange to increase or decrease.
Bass debugging: 1: Just after the connection, there is no need to debug. 2: Change the mid-low frequency component of the bass. 3: Change the low and medium frequency components of the bass to decrease.
Product parameters:
Size: 90x70x24mm
Frequency point: 1000HZ/7000HZ (that is, the bass works at frequencies below 1000HZ, the midrange works between 1000HZ and 7000HZ, and the treble works above 7000HZ).
Power: 200W.
Impedance: 4-8 Ohm.
Circuit: Determined by debugging as 6db/oct to 12db/oct.
Material: Inductor adopts oxygen-free copper winding, pure copper wire diameter is thick, has been verified, 100% pure copper wire, will not use enameled aluminum wire production; capacitor uses audio dedicated electrodeless capacitor, fine materials but not Need more, reasonable design, beautiful appearance, excellent sound quality.

 
Features:
 
1. Based on ESP-8266EX
 
2. Arduin compatible, use Arduino IDE for programming
 
3.11XI/O pin
 
4.1XADC pin (input 0-3.3V)
 
5. Support OTA online
 
6. Onboard 5V 1A switching power supply (maximum input 24V)

STM32G030C8T6 Mini Development Board G030 MCU M0 Core STM32 System Learning Board Microcontroller STM32G030C8

Vcc is connected to the positive power supply, GND is connected to the negative power supply, the module TXD is connected to the microcontroller rxd, and the module RXD is connected to the microcontroller txd. The power ground and the TTL signal ground must be grounded together
This module uses isolated power supply and magnetic isolation chip to completely isolate the front and rear stages.
Send four Dupont wires
Module interface definition:
Module 4P terminal side:
VCC <<>> 5V / 3.3V (module specification)
TXD <<>> The TTL (UART) transmission of this module is connected to the RXD receiving pin of the microcontroller
RXD <<>> TTL (UART) receiving of this module, connected to the TXD sending pin of the microcontroller
GND <<>> The ground wire of this module (this ground wire must be connected to the ground of the microcontroller system)
Module 5P terminal side:
R /A <<>> The A pin of this module needs to be connected to the T /Y pin of other 422 modules
R-/B <<>> The B pin of this module needs to be connected to the T-/Z pin of other 422 modules
T-/Z <<>> The Z pin of this module needs to be connected to the R-/B pin of other 422 modules
T /Y <<>> The Y pin of this module needs to be connected to the R /A pin of other 422 modules
GND <<>> The ground wire of this module, if some conditions allow, the ground wire can be drawn out as the return path of the common mode signal of the signal. Of course, this wire can not be used when the conditions do not allow it.

Description:
PAJ7620U2 gesture recognition sensor. It can recognize 9 gestures including move up, move down, move left, move right, move forward, move backward,circle-clockwise, circle-counter clockwise, and wave. These gestures information can be simply accessed via the I2C bus. The PAJ7620U2 also offers built-in proximity detection for the purpose of sensing object approaching or departing. The PAJ7620U2 is designed with great flexibility in power-saving mechanism.The PAJ7620U2 is designed to operate from 2.8V to 3.3V over -40°C to 85°C and the pull-up voltage for the I2C bus and interrupt line is from 1.8V to 3.3V.
Feature
Typical supply voltage is 2.8V to 3.3V and I/O voltage is 1.8V~3.3V
Nine gesture recognition (Up / Down / Left / Right / Push / Pull / CW / CCW / Wave)
Gesture speed is 60°/s to 600°/s in Normal Mode and 60°/s to 1200°/s in Gaming Mode
Ambient light immunity: < 100k Lux
Built-in proximity detection
Flexible power saving scheme
I2C interface up to 400 kbit/s, Pull-up voltage from 1.8V to 3.3V
Ambient light noise cancellation
Application
PAD Phone
Tablet Personal Computer
Automobile Application

Description:
The ML8511 breakout is an easy to use ultraviolet light sensor. The MP8511 UV (ultraviolet) Sensor works by outputing an analog signal in relation to the amount of UV light that's detected. This breakout can be very handy in creating devices that warn the user of sunburn or detect the UV index as it relates to weather conditions. This sensor detects 280-390nm light most effectively. This is categorized as part of the UVB (burning rays) spectrum and most of the UVA (tanning rays) spectrum. It outputs a analog voltage that is linearly related to the measured UV intensity (mW/cm2). If your microcontroller can do an analog to digital signal conversion then you can detect the level of UV! Oki (OKI) launched the built-in amplifier of the ultraviolet (UV) sensor IC--ML8511. The products used on the insulation cover Silicon (SOI)-CMOS, the company's first analog voltage output, filter the UV sensor. OKI high UV sensor IC thanks to easy integration of SOI-CMOS technology, suitable for digital and analog circuits. OKI said, the company future will flexible using this a specialist, strengthening and connection microprocessor of digital output circuit, then and sense measuring type brightness control sensor (Ambient Light Sensor) constitute single chip of commodity lineup; future of products hope not only can do on day of UV volume at a glance, and and at any time can master UV dangerous degrees of decorative sex volume measuring equipment, and will application promotion to appliances equipment, and can carrying type equipment field. ML8511 analog voltage is proportional to the amount of UV light output. Because of the output voltage, so you can directly connect the built-in a/d d/a converter of the MCU, no photoelectric conversion circuit. And the use of small and thin package, suitable for use in portable equipment.

Specification:
Power amplifier chip: TPA3118
Power amplifier power: 1*60W
Power supply voltage: 8~24VDC
Size: 46*35mm

GP2Y0A21YK0F infrared distance measuring sensor GP2D12 distance detection 10-80cm with line
characteristic
1. Distance measurement range: 10 to 80 cm
2. Analog output type
3. Size: 29.5 × 13.5 mm × 13
4. Current: 30 mA
5. Supply voltage: 4.5 to 5.5 V
application
1. Less contact switch
(Sanitary equipment, control lighting, etc.).
2. Cleaning robot
3. Sensor pair energy saving
(ATM machine, copier, vending machine)
4. Playground Equipment
(robot, game console)

specification:
WIFI
Bluetooth
4 MBFlash memory
Lithium battery interface,500mAMaximum charging current

Product introduction:
J-Link-OB is a set of independent simulation debugging downloader developed by SEGGER, which is usually designed to the evaluation board ("on-board") of major companies, which is also the reason for the suffix "OB". This set of emulation download debugger named "J-Link-OB" has USB communication function, which can communicate with PC, and the other end communicates with supported devices through SWD/JTAG mode to complete the debugging emulation download debugging task.
Compared with the original J-Link OB, our J-Link OB emulator debugger lacks the JTAG interface, and only retains the SWD interface to debug and download the MCUs of many companies using ARM cores.
Supported objects:
All ARM7\9\11, Cortex-M0\M1\M2\M3\M4\A5\A8\A9 series embedded microcontrollers with SWD interface.
Manufacturers that support MCUs are:
ST (ST), Freecale (Freescale), nuvoton (Nuvoton), NXP (NXP), TI (Texas Instruments), Cypress (Cypress), Atmel (Atmel), Analog (Asia) Deno), Fujitsu (Fuji), Toshiba (Toshiba)
Energy Micro et al.
Connection method:
SWD mode
Supported IDE software:
J-Flash ARM, Keil MDK-ARM, IAR EWARM, CoIDE, mikroC PRO for ARM, nRFgo Studio
Function and performance:
Programming function: can burn and write FLASH ROM, EEPROM, AFR, etc.
Simulation function: supports various debugging methods such as full-speed operation, single-step debugging, breakpoint debugging, etc., and can view IO status, variable data, etc.
Programming performance: using USB2.0 interface, SWD download, fast download speed!
Simulation performance: using USB2.0 interface for simulation debugging, single-step debugging, breakpoint debugging, fast response!
Features:
1. Simplified the interface, using 4-wire SWD interface:
vcc, swdio, swclk, gnd, can download simulation at high speed.
2. Compatible with traditional V8 emulators, the functions are exactly the same.
3. Use the general micro USB interface for easy use (common interface for ordinary Android phones).
4. Support 3.3V output, the maximum output current is 300MA, which is convenient for users to debug and download the target board.
5. The new onboard self-recovery fuse provides effective short-circuit protection and makes debugging safer.
6. ESD protection device, more stable.
7. Transparent heat shrinkable tube packaging.
8. The firmware is stable and can be automatically upgraded, and there will be no firmware damage (full-featured v8 has firmware problems).
9. The size of the U disk is convenient for the project to be carried on business trips.
The difference between SWD and JTAG:
Compared with the JTAG interface, the SWD interface needs at least 3 pins (SWDIO/SWCLK/GND) to complete the debugging and downloading emulation task. It is recommended to use SWD to download emulation mode

Feature:
This fully-featured UDA1334A I2S Stereo DAC breakout is a perfect match for any I2S-output audio interface. 3.3V - 5V logic levels (a rarity), and can process multiple different formats by setting two pins to high or low. The DAC will process data immediately, and give you a clear, analog, stereo line level output. It's even cool with MCLK-less I2S interfaces such as the Raspberry Pi (which it's ideal for) - a built in PLL will generate the proper clock from the incoming signal. For inputs, you can use classic I2S (the default) or 16-bit, 20-bit or 24-bit left justified data. You can set it up to take an input system/master clock but we default-set it to just generate it for you, so you only need to connect Data In, Word Select (Left/Right Clock) and Bit Clock lines. If you want, there's a mute pin and a de-emphasis filter you can turn on

AC 220V 6000W SCR Voltage Regulator Controller Electronic Dimmer Thermostat Motor Speed Controller Volt Regulater Mold with Case
 
Specification:
Motor Type: AC Motor
Model Number: Voltage Regulator
Max Power: 6KW (max resistive load, 3KW power for normal use recommended)
Efficiency: Greater than 90%
Work Voltage: AC 220V
Safer design with protective case, suitable for home and factory use.
Using original imported 41A SCR.
Using 1.6 mm FR-4 PCB, reliable and safe welding design.
Upgraded double capacitance circuit design (safe capacitance and metal film capacitance) protects the SCR by reducing surge and voltage spike. Brings more safety and efficiency.
Adjust Voltage: AC 0-220V
Please remember to connect load before you adjust the voltage.
SCR in mainly used on resistive load and most single-phase motors. Please check your model series before you buy.
colour: Silver
Material: Metal electronic components
size: 13*6.4.7cm
Knob Diameter: approx. 6 mm/0.24 inch
 

UV Detection Sensor Module Ultraviolet Ray Module For Arduino
​Description
1. Operating Voltage:  DC 3.3-5V 
2. Output voltage:  DC 0-1V 
3. Test accuracy:  ±1UV INDEX 
4. Current:  0.06mA(typ), 0.1mA(max). 
5. Response wavelength:  200nm-370nm 
6. Work temperature:  -20 Celsius  ~85 Celsius 
7. Detect UV wavelength:  200-370nm 
8. Size: 19.80*15mm