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nput voltage range: 6V to 32V
Output voltage: The default is 5V. After the fast charge is triggered, it is automatically adjusted between 3 and 12V.
Output Power. 24W (5V, 3.4A, 9V, 2.5A, 12V, 2A, etc.)
Output voltage wired compensation
Conversion efficiency: 90% to 97%
Supports multiple fast charging protocols
Input overvoltage, undervoltage protection
Input over-current protection
Output overcurrent and short circuit protection
Over temperature protection
 
Support fast charging protocol
for BC1.2, iPhone, Samsung agreement
for Qualcomm QC2.O and QC3.O
MTKPEI.1/PE2.O
Fast Charge Protocol FCP
Star Fast Charge Protocol AFC
Spreadtrum Fast Charge Agreement SFCP
 
 
 
 
 
 
 
 

nput voltage range: 6V to 32V
Output voltage: The default is 5V. After the fast charge is triggered, it is automatically adjusted between 3 and 12V.
Output Power. 24W (5V, 3.4A, 9V, 2.5A, 12V, 2A, etc.)
Output voltage wired compensation
Conversion efficiency: 90% to 97%
Supports multiple fast charging protocols
Input overvoltage, undervoltage protection
Input over-current protection
Output overcurrent and short circuit protection
Over temperature protection
 
Support fast charging protocol
for BC1.2, iPhone, Samsung agreement
for Qualcomm QC2.O and QC3.O
MTKPEI.1/PE2.O
Fast Charge Protocol FCP
Star Fast Charge Protocol AFC
Spreadtrum Fast Charge Agreement SFCP
 
 
 
 
 
 
 
 

nput voltage range: 6V to 32V
Output voltage: The default is 5V. After the fast charge is triggered, it is automatically adjusted between 3 and 12V.
Output Power. 24W (5V, 3.4A, 9V, 2.5A, 12V, 2A, etc.)
Output voltage wired compensation
Conversion efficiency: 90% to 97%
Supports multiple fast charging protocols
Input overvoltage, undervoltage protection
Input over-current protection
Output overcurrent and short circuit protection
Over temperature protection
 
Support fast charging protocol
for BC1.2, iPhone, Samsung agreement
for Qualcomm QC2.O and QC3.O
MTKPEI.1/PE2.O
Fast Charge Protocol FCP
Star Fast Charge Protocol AFC
Spreadtrum Fast Charge Agreement SFCP
 
 
 
 
 
 
 
 

DS3231 is a low-cost, extremely accurate I2C real-time clock (RTC), with an integrated temperature-compensated crystal oscillator (TCXO) and crystal. The device incorporates a battery input, disconnect the main power supply and maintains accurate timekeeping. Integrated oscillator improve long-term accuracy of the device and reduces the number of components of the production line. The DS3231 is available in commercial and industrial temperature ranges, using a 16-pin 300mil SO package.
RTC maintains seconds, minutes, hours, day, date, month, and year information. Less than 31 days of the month, the end date will be automatically adjusted, including corrections for leap year. The clock operates in either the 24 hours or band / AM / PM indication of the 12-hour format. Provides two configurable alarm clock and a calendar can be set to a square wave output. Address and data are transferred serially through an I2C bidirectional bus.
A precision temperature-compensated voltage reference and comparator circuit monitors the status of VCC to detect power failures, provide a reset output, and if necessary, automatically switch to the backup power supply. In addition, / RST pin is monitored as generating μP reset manually.
Save time and high precision addition, DS3231 also has some other features that extend the system host of additional features and a range of options. The device integrates a very precise digital temperature sensor, through the I2C * interface to access it (as the same time). This temperature sensor accuracy is ± 3 . On-chip power supply control circuit can automatically detect and manage the main and standby power (i.e., low-voltage battery) to switch between the power supply. If the main power failure, the device can continue to provide accurate timing and temperature, performance is not affected. When the main power re-power or voltage value returns to within the allowable range, the on-chip reset function can be used to restart the system microprocessor.
 
Module parameters:
1. Size: 38mm (length) * 22mm (W) * 14mm (height)
2. Weight: 8g
3. Operating voltage :3.3 - 5 .5 V
4. Clock chip: high-precision clock chip DS3231
5. Clock Accuracy :0-40 range, the accuracy 2ppm, the error was about 1 minute
6. Calendar alarm clock with two
7. Programmable square-wave output
8. Real time clock generator seconds, minutes, hours, day, date, month and year timing and provide valid until the year 2100 leap year compensation
9. Chip temperature sensor comes with an accuracy of ± 3
10. Memory chips: AT24C32 (storage capacity 32K)
11. IIC bus interface, the maximum transmission speed of 400KHz (working voltage of 5V)
12. Can be cascaded with other IIC device, 24C32 addresses can be shorted A0/A1/A2 modify default address is 0x57
13. With rechargeable battery LIR2032, to ensure the system after power failure, the clock move any natural normal
14. Packing: single anti-static packaging
 
Wiring instructions ( for Arduino uno r3 for example):
SCL → A5
SDA → A4
VCC → 5V
GND → GND

DS3231 is a low-cost, extremely accurate I2C real-time clock (RTC), with an integrated temperature-compensated crystal oscillator (TCXO) and crystal. The device incorporates a battery input, disconnect the main power supply and maintains accurate timekeeping. Integrated oscillator improve long-term accuracy of the device and reduces the number of components of the production line. The DS3231 is available in commercial and industrial temperature ranges, using a 16-pin 300mil SO package.
RTC maintains seconds, minutes, hours, day, date, month, and year information. Less than 31 days of the month, the end date will be automatically adjusted, including corrections for leap year. The clock operates in either the 24 hours or band / AM / PM indication of the 12-hour format. Provides two configurable alarm clock and a calendar can be set to a square wave output. Address and data are transferred serially through an I2C bidirectional bus.
A precision temperature-compensated voltage reference and comparator circuit monitors the status of VCC to detect power failures, provide a reset output, and if necessary, automatically switch to the backup power supply. In addition, / RST pin is monitored as generating μP reset manually.
Save time and high precision addition, DS3231 also has some other features that extend the system host of additional features and a range of options. The device integrates a very precise digital temperature sensor, through the I2C * interface to access it (as the same time). This temperature sensor accuracy is ± 3 . On-chip power supply control circuit can automatically detect and manage the main and standby power (i.e., low-voltage battery) to switch between the power supply. If the main power failure, the device can continue to provide accurate timing and temperature, performance is not affected. When the main power re-power or voltage value returns to within the allowable range, the on-chip reset function can be used to restart the system microprocessor.
 
Module parameters:
1. Size: 38mm (length) * 22mm (W) * 14mm (height)
2. Weight: 8g
3. Operating voltage :3.3 - 5 .5 V
4. Clock chip: high-precision clock chip DS3231
5. Clock Accuracy :0-40 range, the accuracy 2ppm, the error was about 1 minute
6. Calendar alarm clock with two
7. Programmable square-wave output
8. Real time clock generator seconds, minutes, hours, day, date, month and year timing and provide valid until the year 2100 leap year compensation
9. Chip temperature sensor comes with an accuracy of ± 3
10. Memory chips: AT24C32 (storage capacity 32K)
11. IIC bus interface, the maximum transmission speed of 400KHz (working voltage of 5V)
12. Can be cascaded with other IIC device, 24C32 addresses can be shorted A0/A1/A2 modify default address is 0x57
13. With rechargeable battery LIR2032, to ensure the system after power failure, the clock move any natural normal
14. Packing: single anti-static packaging
 
Wiring instructions ( for Arduino uno r3 for example):
SCL → A5
SDA → A4
VCC → 5V
GND → GND

Operating voltage: 1.9-3.6V (3.3V recommended)
Standby current: 60nA
Temperature range: -40 to 85 ° C (-10 to 60 ° C is recommended)
Temperature accuracy: ± 0.4 ° (-10 - 85 °)
Humidity range: 0-100% RH (20% - 80% RH recommended)
Humidity accuracy: ± 3% RH (0-80% RH)
Temperature conversion time: 7ms
Humidity conversion time: 17ms (for humidity conversion will automatically be temperature conversion)
Interface Type: I2C 2.54mm pitch pad

Operating voltage: 1.9-3.6V (3.3V recommended)
Standby current: 60nA
Temperature range: -40 to 85 ° C (-10 to 60 ° C is recommended)
Temperature accuracy: ± 0.4 ° (-10 - 85 °)
Humidity range: 0-100% RH (20% - 80% RH recommended)
Humidity accuracy: ± 3% RH (0-80% RH)
Temperature conversion time: 7ms
Humidity conversion time: 17ms (for humidity conversion will automatically be temperature conversion)
Interface Type: I2C 2.54mm pitch pad

 
Product Features
A simple steps and direction control interface
2 six different steps resolutions: full step, half step, 1/4-step1/8-step1/16-step, 1/32-step
3.CAN interface directly with 3.3 V and 5 V systems
4 Over-temperature thermal shutdown, overcurrent shutdown, undervoltage lockout
5 short to ground short circuit load protection
6.4 Layer 2 oz copper PCB, in order to improve heat dissipation
7 exposed solder ground below the bottom of the driver IC on the printed circuit board pad
8 module size, pin and interface matching A4988 stepper motor driver operators in many ways
9 adjustable current control lets you set a potentiometer, which lets you use the stepper motor's rated voltage or more, in order to achieve a higher rate of maximum output current step
10 Intelligent chopping control automatically selects the correct current decay mode (fast decay or slow decay)
11 Maximum 45 V supply voltage
12 built-in voltage regulator (the need for any external logic supply voltage)
 
Relative 4988 Features Advantages:
1, the maximum current of 2.5A.
2, the maximum support 32 subdivision.
3,4 layer PCB board, better heat dissipation.
4, the chip resistance is smaller, lower heat, better heat dissipation.
 
parameter:
Size: 1.5mmX2mm (same as 4988)
 
Drive current: 2.5A
Subdivision: 1,1 / 2,1 / 4,1 / 8,1 / 16,1 / 32
Manufacturing process: SMT placement machine manufacturing, non-manual welding, higher yield, more stable performance
 

Features:
1) high-accuracy voltage detection circuit;
2) terminal of the charger using high voltage device;
3) Built-in three-stage over-current detection circuit (over-current 1, over-current 2, load short circuit);
4) MOS transistor can control the battery charge and discharge;
 
 
Parameter:
Over charge voltage: 4.25±0.05V
Over charge release voltage:4.23±0.05V
Over discharge voltage:2.54±0.1V
Maximal continuous charging current: 2A
Maximal continuous Discharging current: 2A
Over current protection: 3A
Size: L40*W4*T3mm
 
 

Features:
1) high-accuracy voltage detection circuit;
2) terminal of the charger using high voltage device;
3) Built-in three-stage over-current detection circuit (over-current 1, over-current 2, load short circuit);
4) MOS transistor can control the battery charge and discharge;
 
 
Parameter:
Over charge voltage: 4.25±0.05V
Over charge release voltage:4.23±0.05V
Over discharge voltage:2.54±0.1V
Maximal continuous charging current: 2A
Maximal continuous Discharging current: 2A
Over current protection: 3A
Size: L40*W4*T3mm
 
 

Model: GY - 511
Size: 14.5 mm * 20.5 mm
Name: LSM303DLHC module (three axial magnetic field triaxial acceleration)
Chip built-in 12 bit AD converter, a 16-bit data output
Using high quality heavy gold PCB, machine welding process to ensure quality

Stable and reliable chipset CP2102
USB specification 2.0 compliant with full-speed 12Mbps.
Standard USB type A male and TTL 5pin connector. 5pins for 3.3V,TXD,RXD,GND & 5V
All handshaking and modem interface signals
Baud rates: 300 bps to 1.0Mbps.
Byte receive buffer; 640 byte transmit buffer.
Hardware or X-On/X-Off handshaking supported.
Event character support Line break transmission.
USB suspend states supported via SUSPEND pins.
Temperature Range: -40° to 85°.
Supports Windows 98SE, 2003, XP, Vista, Window7, Mac OSX , Linux 2.6.x and 2.4.36
Maximum baud rate 115200 perfect support! No longer distressed STC12 Series, STC11, STC15 series Burn!
 
 

Pay special attention to; The following are wrong connection methods:
 
Of the following does not belong to quality problems, are all wiring error, not warranty caveat emptor:
1, since the voluntary testing after the success, the use of TXD or RXD and short circuit
2, module meet the power supply cause damage
 
Product features:
Using HC - 06 from module 1, a core module, which leads to the interface includes VCC, GND, TXD, RXD, reserved LED state output pin, MCU can state whether the bluetooth is connected through the foot, from machine KEY pin is invalid
2, the led indicates a bluetooth connection status, twinkle said there was no bluetooth connectivity, Chang Liang said bluetooth is connected and turned on the port
3, backplane "3.3 V, the input voltage 3.6 ~ 6 V, current when the unpaired about 30 ma, matching after about 10 ma, no more than 7 V input voltage!
4, interface level 3.3 V, can be connected directly to all kinds of single chip microcomputer (51, AVR, PIC, ARM, MSP430, etc.), 5 V single chip can be connected directly, without MAX232 couldn't through MAX232.
5, clearing the effective distance of 10 meters, more than 10 meters is possible, but not to this distance connection quality
After 6, pairing when full duplex serial port to use, do not need to know any bluetooth protocol, but supports only one in the eight data bits, stop bits and parity checking the communication format, which is the most commonly used communication format, does not support other formats.
7, when the bluetooth connection has not been established by pairing the AT command set baud rate, name, password, and set the parameters of the power save. After the bluetooth connection automatically switch to passthrough mode
8, small size (3.57 cm * 1.52 cm), SMT factory, ensure the quality of the patch. And set transparent heat shrinkable tube, dust and beautiful, and there are some antistatic ability.
9, this link for the machine, from the function and all kinds of computer with bluetooth, bluetooth host, with most of bluetooth mobile phone, PDA, PSP and other intelligent terminal pair, not matching between from the machine.
 
 
Small common sense (very important) :
TXD: sender, usually expressed as the sender, normal communication RXD must connect another equipment.
RXD: receiver, usually expressed as the receiver, the normal communication TXD must connect another equipment.
When normal communication itself TXD pick up equipment RXD forever!
From collect spontaneous: normal communication RXD TXD connect other devices, so if you want to receive your send data as the name implies, namely receive your sending data, namely own TXD directly connected to the RXD, used to test the send and receive is normal, is the easiest fastest test method, when there is a problem to do the test first to determine whether the product failure. Also known as the loop back test.

Pay special attention to; The following are wrong connection methods:
 
Of the following does not belong to quality problems, are all wiring error, not warranty caveat emptor:
1, since the voluntary testing after the success, the use of TXD or RXD and short circuit
2, module meet the power supply cause damage
 
Product features:
Using HC - 06 from module 1, a core module, which leads to the interface includes VCC, GND, TXD, RXD, reserved LED state output pin, MCU can state whether the bluetooth is connected through the foot, from machine KEY pin is invalid
2, the led indicates a bluetooth connection status, twinkle said there was no bluetooth connectivity, Chang Liang said bluetooth is connected and turned on the port
3, backplane "3.3 V, the input voltage 3.6 ~ 6 V, current when the unpaired about 30 ma, matching after about 10 ma, no more than 7 V input voltage!
4, interface level 3.3 V, can be connected directly to all kinds of single chip microcomputer (51, AVR, PIC, ARM, MSP430, etc.), 5 V single chip can be connected directly, without MAX232 couldn't through MAX232.
5, clearing the effective distance of 10 meters, more than 10 meters is possible, but not to this distance connection quality
After 6, pairing when full duplex serial port to use, do not need to know any bluetooth protocol, but supports only one in the eight data bits, stop bits and parity checking the communication format, which is the most commonly used communication format, does not support other formats.
7, when the bluetooth connection has not been established by pairing the AT command set baud rate, name, password, and set the parameters of the power save. After the bluetooth connection automatically switch to passthrough mode
8, small size (3.57 cm * 1.52 cm), SMT factory, ensure the quality of the patch. And set transparent heat shrinkable tube, dust and beautiful, and there are some antistatic ability.
9, this link for the machine, from the function and all kinds of computer with bluetooth, bluetooth host, with most of bluetooth mobile phone, PDA, PSP and other intelligent terminal pair, not matching between from the machine.
 
 
Small common sense (very important) :
TXD: sender, usually expressed as the sender, normal communication RXD must connect another equipment.
RXD: receiver, usually expressed as the receiver, the normal communication TXD must connect another equipment.
When normal communication itself TXD pick up equipment RXD forever!
From collect spontaneous: normal communication RXD TXD connect other devices, so if you want to receive your send data as the name implies, namely receive your sending data, namely own TXD directly connected to the RXD, used to test the send and receive is normal, is the easiest fastest test method, when there is a problem to do the test first to determine whether the product failure. Also known as the loop back test.

Pay special attention to; The following are wrong connection methods:
 
Of the following does not belong to quality problems, are all wiring error, not warranty caveat emptor:
1, since the voluntary testing after the success, the use of TXD or RXD and short circuit
2, module meet the power supply cause damage
 
Product features:
Using HC - 06 from module 1, a core module, which leads to the interface includes VCC, GND, TXD, RXD, reserved LED state output pin, MCU can state whether the bluetooth is connected through the foot, from machine KEY pin is invalid
2, the led indicates a bluetooth connection status, twinkle said there was no bluetooth connectivity, Chang Liang said bluetooth is connected and turned on the port
3, backplane "3.3 V, the input voltage 3.6 ~ 6 V, current when the unpaired about 30 ma, matching after about 10 ma, no more than 7 V input voltage!
4, interface level 3.3 V, can be connected directly to all kinds of single chip microcomputer (51, AVR, PIC, ARM, MSP430, etc.), 5 V single chip can be connected directly, without MAX232 couldn't through MAX232.
5, clearing the effective distance of 10 meters, more than 10 meters is possible, but not to this distance connection quality
After 6, pairing when full duplex serial port to use, do not need to know any bluetooth protocol, but supports only one in the eight data bits, stop bits and parity checking the communication format, which is the most commonly used communication format, does not support other formats.
7, when the bluetooth connection has not been established by pairing the AT command set baud rate, name, password, and set the parameters of the power save. After the bluetooth connection automatically switch to passthrough mode
8, small size (3.57 cm * 1.52 cm), SMT factory, ensure the quality of the patch. And set transparent heat shrinkable tube, dust and beautiful, and there are some antistatic ability.
9, this link for the machine, from the function and all kinds of computer with bluetooth, bluetooth host, with most of bluetooth mobile phone, PDA, PSP and other intelligent terminal pair, not matching between from the machine.
 
 
Small common sense (very important) :
TXD: sender, usually expressed as the sender, normal communication RXD must connect another equipment.
RXD: receiver, usually expressed as the receiver, the normal communication TXD must connect another equipment.
When normal communication itself TXD pick up equipment RXD forever!
From collect spontaneous: normal communication RXD TXD connect other devices, so if you want to receive your send data as the name implies, namely receive your sending data, namely own TXD directly connected to the RXD, used to test the send and receive is normal, is the easiest fastest test method, when there is a problem to do the test first to determine whether the product failure. Also known as the loop back test.

Pay special attention to; The following are wrong connection methods:
 
Of the following does not belong to quality problems, are all wiring error, not warranty caveat emptor:
1, since the voluntary testing after the success, the use of TXD or RXD and short circuit
2, module meet the power supply cause damage
 
Product features:
Using HC - 06 from module 1, a core module, which leads to the interface includes VCC, GND, TXD, RXD, reserved LED state output pin, MCU can state whether the bluetooth is connected through the foot, from machine KEY pin is invalid
2, the led indicates a bluetooth connection status, twinkle said there was no bluetooth connectivity, Chang Liang said bluetooth is connected and turned on the port
3, backplane "3.3 V, the input voltage 3.6 ~ 6 V, current when the unpaired about 30 ma, matching after about 10 ma, no more than 7 V input voltage!
4, interface level 3.3 V, can be connected directly to all kinds of single chip microcomputer (51, AVR, PIC, ARM, MSP430, etc.), 5 V single chip can be connected directly, without MAX232 couldn't through MAX232.
5, clearing the effective distance of 10 meters, more than 10 meters is possible, but not to this distance connection quality
After 6, pairing when full duplex serial port to use, do not need to know any bluetooth protocol, but supports only one in the eight data bits, stop bits and parity checking the communication format, which is the most commonly used communication format, does not support other formats.
7, when the bluetooth connection has not been established by pairing the AT command set baud rate, name, password, and set the parameters of the power save. After the bluetooth connection automatically switch to passthrough mode
8, small size (3.57 cm * 1.52 cm), SMT factory, ensure the quality of the patch. And set transparent heat shrinkable tube, dust and beautiful, and there are some antistatic ability.
9, this link for the machine, from the function and all kinds of computer with bluetooth, bluetooth host, with most of bluetooth mobile phone, PDA, PSP and other intelligent terminal pair, not matching between from the machine.
 
 
Small common sense (very important) :
TXD: sender, usually expressed as the sender, normal communication RXD must connect another equipment.
RXD: receiver, usually expressed as the receiver, the normal communication TXD must connect another equipment.
When normal communication itself TXD pick up equipment RXD forever!
From collect spontaneous: normal communication RXD TXD connect other devices, so if you want to receive your send data as the name implies, namely receive your sending data, namely own TXD directly connected to the RXD, used to test the send and receive is normal, is the easiest fastest test method, when there is a problem to do the test first to determine whether the product failure. Also known as the loop back test.

Pay special attention to; The following are wrong connection methods:
 
Of the following does not belong to quality problems, are all wiring error, not warranty caveat emptor:
1, since the voluntary testing after the success, the use of TXD or RXD and short circuit
2, module meet the power supply cause damage
 
Product features:
Using HC - 06 from module 1, a core module, which leads to the interface includes VCC, GND, TXD, RXD, reserved LED state output pin, MCU can state whether the bluetooth is connected through the foot, from machine KEY pin is invalid
2, the led indicates a bluetooth connection status, twinkle said there was no bluetooth connectivity, Chang Liang said bluetooth is connected and turned on the port
3, backplane "3.3 V, the input voltage 3.6 ~ 6 V, current when the unpaired about 30 ma, matching after about 10 ma, no more than 7 V input voltage!
4, interface level 3.3 V, can be connected directly to all kinds of single chip microcomputer (51, AVR, PIC, ARM, MSP430, etc.), 5 V single chip can be connected directly, without MAX232 couldn't through MAX232.
5, clearing the effective distance of 10 meters, more than 10 meters is possible, but not to this distance connection quality
After 6, pairing when full duplex serial port to use, do not need to know any bluetooth protocol, but supports only one in the eight data bits, stop bits and parity checking the communication format, which is the most commonly used communication format, does not support other formats.
7, when the bluetooth connection has not been established by pairing the AT command set baud rate, name, password, and set the parameters of the power save. After the bluetooth connection automatically switch to passthrough mode
8, small size (3.57 cm * 1.52 cm), SMT factory, ensure the quality of the patch. And set transparent heat shrinkable tube, dust and beautiful, and there are some antistatic ability.
9, this link for the machine, from the function and all kinds of computer with bluetooth, bluetooth host, with most of bluetooth mobile phone, PDA, PSP and other intelligent terminal pair, not matching between from the machine.
 
 
Small common sense (very important) :
TXD: sender, usually expressed as the sender, normal communication RXD must connect another equipment.
RXD: receiver, usually expressed as the receiver, the normal communication TXD must connect another equipment.
When normal communication itself TXD pick up equipment RXD forever!
From collect spontaneous: normal communication RXD TXD connect other devices, so if you want to receive your send data as the name implies, namely receive your sending data, namely own TXD directly connected to the RXD, used to test the send and receive is normal, is the easiest fastest test method, when there is a problem to do the test first to determine whether the product failure. Also known as the loop back test.

Pay special attention to; The following are wrong connection methods:
 
Of the following does not belong to quality problems, are all wiring error, not warranty caveat emptor:
1, since the voluntary testing after the success, the use of TXD or RXD and short circuit
2, module meet the power supply cause damage
 
Product features:
Using HC - 06 from module 1, a core module, which leads to the interface includes VCC, GND, TXD, RXD, reserved LED state output pin, MCU can state whether the bluetooth is connected through the foot, from machine KEY pin is invalid
2, the led indicates a bluetooth connection status, twinkle said there was no bluetooth connectivity, Chang Liang said bluetooth is connected and turned on the port
3, backplane "3.3 V, the input voltage 3.6 ~ 6 V, current when the unpaired about 30 ma, matching after about 10 ma, no more than 7 V input voltage!
4, interface level 3.3 V, can be connected directly to all kinds of single chip microcomputer (51, AVR, PIC, ARM, MSP430, etc.), 5 V single chip can be connected directly, without MAX232 couldn't through MAX232.
5, clearing the effective distance of 10 meters, more than 10 meters is possible, but not to this distance connection quality
After 6, pairing when full duplex serial port to use, do not need to know any bluetooth protocol, but supports only one in the eight data bits, stop bits and parity checking the communication format, which is the most commonly used communication format, does not support other formats.
7, when the bluetooth connection has not been established by pairing the AT command set baud rate, name, password, and set the parameters of the power save. After the bluetooth connection automatically switch to passthrough mode
8, small size (3.57 cm * 1.52 cm), SMT factory, ensure the quality of the patch. And set transparent heat shrinkable tube, dust and beautiful, and there are some antistatic ability.
9, this link for the machine, from the function and all kinds of computer with bluetooth, bluetooth host, with most of bluetooth mobile phone, PDA, PSP and other intelligent terminal pair, not matching between from the machine.
 
 
Small common sense (very important) :
TXD: sender, usually expressed as the sender, normal communication RXD must connect another equipment.
RXD: receiver, usually expressed as the receiver, the normal communication TXD must connect another equipment.
When normal communication itself TXD pick up equipment RXD forever!
From collect spontaneous: normal communication RXD TXD connect other devices, so if you want to receive your send data as the name implies, namely receive your sending data, namely own TXD directly connected to the RXD, used to test the send and receive is normal, is the easiest fastest test method, when there is a problem to do the test first to determine whether the product failure. Also known as the loop back test.

NRF24L01P PA LNA Division I for the ultra-long-distance data transmission specially developedhigh-power and high sensitivity wireless module 2.4G ISM band NRF24L01P PA LNA wirelessmodule to work in the license-free, can be point-to-pointapplications, can also be composed of a star network,
NRF24L01P PA LNA wireless module core Norway NORDIC company's latest high-performancewireless
Digital transmission chip NRF24L01 , with the Division of Professional Design professional full two-way RF power amplifier high power PA and LNA chip, RF switches, bandpass filters, etc., makeseffective communication distance greatly expand.
RF part, the Secretary has done a lot of optimization matching debugging, the emission efficiency to achieve the highest harmonic minimum
Makes NRF24L01P PA LNA wireless module of RF interference to the external equipment reachesa minimum, while not susceptible to interference from other devices, greatly Uploader
High stability of the work.
NRF24L01P PA LNA wireless module integration is extremely high, the size of only 41mm *15.5mm, convenient embedded
In any tight space products, customers can increase an MCU through the SPI port to controlNRF24L01P PA LNA
Wireless module to complete the design of ultra-long-range wireless data transmission systemcompletely eliminates the need for the RF part of the R & D
Worry about slash R & D spending and shorten the development cycle

Description:
 
This is a set of transmitter and receiver in one of the photoelectric sensor. The detection distance can be adjusted upon request. The sensor has a detection distance and the visible light interference, cheap, easy to assemble, easy to use features of robot obstacle avoidance, and assembly line piece can be widely used in many occasions.
Electrical Characteristics:
U: 5VDC
I: The 100mA
Sn :3-80CM
Size:
Diameter: 17MM
Sensor length: 45MM
Lead Length: 45CM
Applications:
A production line goods automatic counting device
2, multi-functional reminder
3, the maze robot
Red: connected 4.5-5V power supply high
Yellow: connected microcontroller output TTL level to the microcontroller
Green: GND 0V power low
 
Photoelectric sensor (photoelectric switch) NPN normally open
Model: E18-D80NK the.
The technical parameters of the photoelectric switch E18:
1, the output current, output, DC / SCR / Relay Control: 100mA/5V supply
2 Current consumption DC <25mA
3, response time <2ms
4, point angle: more than15 °, the effective distance is adjustable from 3-80CM
5,To detect objects: a transparent or opaque body
6, the working environment temperature: -25 °C ~ 55 °C
7, the standard detection object: sunlight 10000LX is the following incandescent 3000LX below
8, Case Material: Plastic
 

 

CJMCU-219 is a module with the I2C interface of zero drift and bi-directional current/power monitoring and control integrated circuit (IC), further expand the TI energy-saving electronic products.INA219 has the industry's highest precision and the small size, not only can monitor the pressure drop on the shunt resistor, sensing shunt power supply voltage, at the same time also can calculate the power.The device adopts the SOT23 packaging, but for the server, notebook computer, power supply, battery management and digital electric vehicle and telecommunication equipment measuring flu provide small, low cost solution.
 
INA219-40 c to 85 c temperature range and can realize the maximum error of 1% accuracy, maximum offset of 100 uV.The advantage of the high precision of the product in combination with 12 resolution, can help clients as much as possible, reduce the pressure drop on the shunt resistor, which can minimize the power loss and power consumption, and saving board space.The device epic of 26 bus voltage range of 0 V to 26 V.
 
INA219 other important features include:
Calibration programmable registers can directly read its unit of measure is the ampere current, and power in watts per read. For as many as 128 sampling averaging, in order to realize filter in noise environment. The I2C interface has a timeout, not only can avoid the bus lock, but also can provide high-speed mode, meet the communication requirements of up to 3.4 MHz. All features are support software programmable INA219. Using single power supply, the working voltage between 3.0 to 5.5 V.
 

Description :
A perfect Bluetooth audio receiver board for use. 
Built-in 3.5mm audio jack for audio output. 
Bluetooth 2.1 receive, can connect with the earphone and can also be used for power amplifier. 
USB interface, powered by DC 5V; with TF card slot. 
With 5 buttons for adjustment, convenient and easy operation. 
The transmission distance could be up to 10m(shielded signals). 
Specifications: 
Power Interface: Mini USB Interface 
Supply Voltage: DC 5V 
Audio Input: Bluetooth V2.1 
Audio Jack: 3.5mm 
Applicable Impedance: 4-8 ohm 
PCB Board Size: 50 * 40mm / 1.97 * 1.57in 
Weight: 11g / 0.39oz 
Package Included :
    1 x Audio Receiver Board

Descirption:
 
 
This module is a plant watering alarm - as simple as that. You put it into the soil near a plant and it emits a tiny chirp when the soil is dry, reminding you to water the plant. Chirp uses capacitive humidity sensing as opposed to resistive humidity sensing, this means, it does not make an electric contact with the soil, avoiding electrode corrosion and soil electrolysis and resulting in better accuracy and longer battery life.
 
Special care has been taken not to make it yet another source of annoyance - Chirp will be silent when it's dark and will restrict itself from making too much noise.
 
The alarm level can be set for each plant individually. As water is consumed by the plant, Chirp will detect the low moisture level and will start to emit rare short chirps. As more water evaporates, Chirp will increase the alarm rate. Chirp can detect if it's day or night by measuring the amount of ambient light and will not make noise when it's dark.
 
1.Size:140*15mm
 
2.Work voltage:3V
 
 
Package Included:
 
  1 x CJMCU Plant Watering Alarm Alerter Humidity Moisture Sensor Module Soil Sensor

Product features:
1. The ultra-thin, subminiature
2. The full voltage input (90 ~ 264 vac)
3. Low ripple and low noise
4. Output overload short circuit protection function
5. High efficiency and power density
6. Product design to meet the EMC and safety testing requirements
7. Low power consumption, green environmental protection, no-load loss < 0.1 W
Aging and
8.100% load test
9. Meet the requirements of UL, CE,
The quality guarantee period of 10.1 years
2. Environmental conditions
The name of the project
Technical indicators:Single bit
Working temperature: - 20-60 degree
Storage temperature: 80-40 -degree
Relative humidity: 5-95.%
The cooling way: Natural cooling
 
The atmospheric pressure: 80-106Kpa
The altitude :2000M or less
vibration
Vibration coefficient of 10 ~ 500 hz, 2 g10min. / 1 cycle, 60 min. Each along the X, Y, Z axes
 
3. The electrical characteristics
 
1. The input features (test) at room temperature.
The name of the project
The technical requirements:Single bit
The rated input voltage:100-100.VAc
The input voltage range:90-90.VAc
Maximum input current:0.2 or less a.
Input surge current;10 or less a.
Maximum input voltage:270 or less VAc
Input soft start: 50 or less MS
Efficiency of low input voltage: Vin = 110 vac, output with 69 or more %
High input voltage: Vin = 220 vac, output with 70 or more %
Long-term reliability:MTBF 100000 or more H.
No load rated output voltage: 5 / - 0.1 VDc
Full rated output voltage: 5 / - 0.2 VDc A
short time maximum output current: P 1000 ma
The maximum output current for a long time: P 600 ma
Voltage regulation: / - 0.2 %
Load regulation: / - 0.5  %
The output ripple and noise: (mVp - p) 50 or less
The rated input voltage and output load.With 20 MHZ bandwidth oscilloscope,
Load and 10 uF and 0.1 uF capacitance test. The MV
Switch machine overshoot
(rated input voltage, output and 10% load) 5 or less % VO
Output over-current protection
Output the maximum load of 150-200%
a.
Output short circuit protection
Directly to the output of the normal short circuit, short circuit automatically resume normal work after removal
4. Safety features:
4.1 the product design as to meet the requirements of UL, CE safety certification.
 
4.2 safety and electromagnetic compatibility
The input design USES UL 0.5 A insurance;
PCB board made of double-sided copper-clad boards material is 94 - where V0 fire rating level;
Safety standards in accordance with UL1012 EN60950, UL60950
Insulation voltage I/P - O/P: 2500 vac
Insulation resistance I/P - O/P > 100 m Ohms / 500 VDC 25 degree 70% RH
Conduction and radiation in line with the EN55011, EN55022 (CISPR22)
Electrostatic discharge IEC/EN 61000-4-2 level 4 8 kv / 15 kv
Radiofrequency radiation immunity IEC/EN 61000-4-3 can be found in the application
4.3 safety design temperature
At normal temperature on our power capacitor, main converter so on surface temperature does not exceed 90 degree; the largest
The shell surface maximum temperature does not exceed 60 degree;

Product features:
1. The ultra-thin, subminiature
2. The full voltage input (90 ~ 264 vac)
3. Low ripple and low noise
4. Output overload short circuit protection function
5. High efficiency and power density
6. Product design to meet the EMC and safety testing requirements
7. Low power consumption, green environmental protection, no-load loss < 0.1 W
Aging and
8.100% load test
9. Meet the requirements of UL, CE,
The quality guarantee period of 10.1 years
2. Environmental conditions
The name of the project
Technical indicators:Single bit
Working temperature: - 20-60 degree
Storage temperature: 80-40 -degree
Relative humidity: 5-95.%
The cooling way: Natural cooling
 
The atmospheric pressure: 80-106Kpa
The altitude :2000M or less
vibration
Vibration coefficient of 10 ~ 500 hz, 2 g10min. / 1 cycle, 60 min. Each along the X, Y, Z axes
 
3. The electrical characteristics
 
1. The input features (test) at room temperature.
The name of the project
The technical requirements:Single bit
The rated input voltage:100-100.VAc
The input voltage range:90-90.VAc
Maximum input current:0.2 or less a.
Input surge current;10 or less a.
Maximum input voltage:270 or less VAc
Input soft start: 50 or less MS
Efficiency of low input voltage: Vin = 110 vac, output with 69 or more %
High input voltage: Vin = 220 vac, output with 70 or more %
Long-term reliability:MTBF 100000 or more H.
No load rated output voltage: 5 / - 0.1 VDc
Full rated output voltage: 5 / - 0.2 VDc A
short time maximum output current: P 1000 ma
The maximum output current for a long time: P 600 ma
Voltage regulation: / - 0.2 %
Load regulation: / - 0.5  %
The output ripple and noise: (mVp - p) 50 or less
The rated input voltage and output load.With 20 MHZ bandwidth oscilloscope,
Load and 10 uF and 0.1 uF capacitance test. The MV
Switch machine overshoot
(rated input voltage, output and 10% load) 5 or less % VO
Output over-current protection
Output the maximum load of 150-200%
a.
Output short circuit protection
Directly to the output of the normal short circuit, short circuit automatically resume normal work after removal
4. Safety features:
4.1 the product design as to meet the requirements of UL, CE safety certification.
 
4.2 safety and electromagnetic compatibility
The input design USES UL 0.5 A insurance;
PCB board made of double-sided copper-clad boards material is 94 - where V0 fire rating level;
Safety standards in accordance with UL1012 EN60950, UL60950
Insulation voltage I/P - O/P: 2500 vac
Insulation resistance I/P - O/P > 100 m Ohms / 500 VDC 25 degree 70% RH
Conduction and radiation in line with the EN55011, EN55022 (CISPR22)
Electrostatic discharge IEC/EN 61000-4-2 level 4 8 kv / 15 kv
Radiofrequency radiation immunity IEC/EN 61000-4-3 can be found in the application
4.3 safety design temperature
At normal temperature on our power capacitor, main converter so on surface temperature does not exceed 90 degree; the largest
The shell surface maximum temperature does not exceed 60 degree;

Product features:
1. The ultra-thin, subminiature
2. The full voltage input (90 ~ 264 vac)
3. Low ripple and low noise
4. Output overload short circuit protection function
5. High efficiency and power density
6. Product design to meet the EMC and safety testing requirements
7. Low power consumption, green environmental protection, no-load loss < 0.1 W
Aging and
8.100% load test
9. Meet the requirements of UL, CE,
The quality guarantee period of 10.1 years
2. Environmental conditions
The name of the project
Technical indicators:Single bit
Working temperature: - 20-60 degree
Storage temperature: 80-40 -degree
Relative humidity: 5-95.%
The cooling way: Natural cooling
 
The atmospheric pressure: 80-106Kpa
The altitude :2000M or less
vibration
Vibration coefficient of 10 ~ 500 hz, 2 g10min. / 1 cycle, 60 min. Each along the X, Y, Z axes
 
3. The electrical characteristics
 
1. The input features (test) at room temperature.
The name of the project
The technical requirements:Single bit
The rated input voltage:100-100.VAc
The input voltage range:90-90.VAc
Maximum input current:0.2 or less a.
Input surge current;10 or less a.
Maximum input voltage:270 or less VAc
Input soft start: 50 or less MS
Efficiency of low input voltage: Vin = 110 vac, output with 69 or more %
High input voltage: Vin = 220 vac, output with 70 or more %
Long-term reliability:MTBF 100000 or more H.
No load rated output voltage: 5 / - 0.1 VDc
Full rated output voltage: 5 / - 0.2 VDc A
short time maximum output current: P 1000 ma
The maximum output current for a long time: P 600 ma
Voltage regulation: / - 0.2 %
Load regulation: / - 0.5  %
The output ripple and noise: (mVp - p) 50 or less
The rated input voltage and output load.With 20 MHZ bandwidth oscilloscope,
Load and 10 uF and 0.1 uF capacitance test. The MV
Switch machine overshoot
(rated input voltage, output and 10% load) 5 or less % VO
Output over-current protection
Output the maximum load of 150-200%
a.
Output short circuit protection
Directly to the output of the normal short circuit, short circuit automatically resume normal work after removal
4. Safety features:
4.1 the product design as to meet the requirements of UL, CE safety certification.
 
4.2 safety and electromagnetic compatibility
The input design USES UL 0.5 A insurance;
PCB board made of double-sided copper-clad boards material is 94 - where V0 fire rating level;
Safety standards in accordance with UL1012 EN60950, UL60950
Insulation voltage I/P - O/P: 2500 vac
Insulation resistance I/P - O/P > 100 m Ohms / 500 VDC 25 degree 70% RH
Conduction and radiation in line with the EN55011, EN55022 (CISPR22)
Electrostatic discharge IEC/EN 61000-4-2 level 4 8 kv / 15 kv
Radiofrequency radiation immunity IEC/EN 61000-4-3 can be found in the application
4.3 safety design temperature
At normal temperature on our power capacitor, main converter so on surface temperature does not exceed 90 degree; the largest
The shell surface maximum temperature does not exceed 60 degree;

About V1.2.0
New PH2-2.0mm battery connector.
1A resettable fuse
Features
Charging Voltage: max: 10V, recommend: 5V
Charging Current: max: 1A
Lithium Battery voltage: 3.3-4.2V
Boost Power Supply: 5V(max: 1A)

Product features: 1.Supporting the D1 MINI 2.The Ar-duino compatible, using A-rduino IDE for programming 3.11 the XI/O pins 4.1 XADC pin (0-3.3 - V)

Product features: 1.Supporting the D1 MINI 2.The Ar-duino compatible, using A-rduino IDE for programming 3.11 the XI/O pins 4.1 XADC pin (0-3.3 - V)

Product features: 1.Supporting the D1 MINI 2.The Ar-duino compatible, using A-rduino IDE for programming 3.11 the XI/O pins 4.1 XADC pin (0-3.3 - V)

Product features: 1.Supporting the D1 MINI 2.The Ar-duino compatible, using A-rduino IDE for programming 3.11 the XI/O pins 4.1 XADC pin (0-3.3 - V)

Product features: 1.Supporting the D1 MINI 2.The Ar-duino compatible, using A-rduino IDE for programming 3.11 the XI/O pins 4.1 XADC pin (0-3.3 - V)

Product features: 1.Supporting the D1 MINI 2.The Ar-duino compatible, using A-rduino IDE for programming 3.11 the XI/O pins 4.1 XADC pin (0-3.3 - V)

Product features: 1.Supporting the D1 MINI 2.The Ar-duino compatible, using A-rduino IDE for programming 3.11 the XI/O pins 4.1 XADC pin (0-3.3 - V)

Product features: 1.Supporting the D1 MINI 2.The Ar-duino compatible, using A-rduino IDE for programming 3.11 the XI/O pins 4.1 XADC pin (0-3.3 - V)

Product features: 1.Supporting the D1 MINI 2.The Ar-duino compatible, using A-rduino IDE for programming 3.11 the XI/O pins 4.1 XADC pin (0-3.3 - V)

Product features: 1.Supporting the D1 MINI 2.The Ar-duino compatible, using A-rduino IDE for programming 3.11 the XI/O pins 4.1 XADC pin (0-3.3 - V)

Product features: 1.Supporting the D1 MINI 2.The Ar-duino compatible, using A-rduino IDE for programming 3.11 the XI/O pins 4.1 XADC pin (0-3.3 - V)

Based on ESP-8266EX
For Arduino compatible, using For Arduino IDE to program
11 x I / O pins
1 x ADC pin (input range of 0-3.3V)
Support OTA wireless upload
Onboard 5V 1A Switching Power Supply (highest input voltage 24V)
After installing the hardware package,
the direct use For Arduino IDE development, the same operation For Arduino UNO
 
Product features:
1. Supporting the D1 MINI
2. The Ar-duino compatible, using Ar-duino IDE for programming
3.11 the XI/O pins
4.1 XADC pin (0-3.3 - V)
5. Support the OTA online
       

Based on ESP-8266EX
For Arduino compatible, using For Arduino IDE to program
11 x I / O pins
1 x ADC pin (input range of 0-3.3V)
Support OTA wireless upload
Onboard 5V 1A Switching Power Supply (highest input voltage 24V)
After installing the hardware package,
the direct use For Arduino IDE development, the same operation For Arduino UNO
 
Product features:
1. Supporting the D1 MINI
2. The Ar-duino compatible, using Ar-duino IDE for programming
3.11 the XI/O pins
4.1 XADC pin (0-3.3 - V)
5. Support the OTA online
       

Based on ESP-8266EX
For Arduino compatible, using For Arduino IDE to program
11 x I / O pins
1 x ADC pin (input range of 0-3.3V)
Support OTA wireless upload
Onboard 5V 1A Switching Power Supply (highest input voltage 24V)
After installing the hardware package,
the direct use For Arduino IDE development, the same operation For Arduino UNO
 
Product features:
1. Supporting the D1 MINI
2. The Ar-duino compatible, using Ar-duino IDE for programming
3.11 the XI/O pins
4.1 XADC pin (0-3.3 - V)
5. Support the OTA online
       

Based on ESP-8266EX
For Arduino compatible, using For Arduino IDE to program
11 x I / O pins
1 x ADC pin (input range of 0-3.3V)
Support OTA wireless upload
Onboard 5V 1A Switching Power Supply (highest input voltage 24V)
After installing the hardware package,
the direct use For Arduino IDE development, the same operation For Arduino UNO
 
Product features:
1. Supporting the D1 MINI
2. The Ar-duino compatible, using Ar-duino IDE for programming
3.11 the XI/O pins
4.1 XADC pin (0-3.3 - V)
5. Support the OTA online
       

What's new about V3.0.0 Optimize the circuit Add Deep-Sleep jumper. Default firmware: lastest MicroPython ESP8266 firmware. Features 11 digital input/output pins, all pins have interrupt/pwm/I2C/one-wire supported(except D0) 1 analog input(3.2V max input) a Micro USB connection Compatible with for MicroPython, for Arduino, for Nodemcu lots of Shields
Package include: Long femalepinsx2pcs Short female pins x2pcs Normal pins x2pcs for WEMOS D1 mini Boardx1pcs