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Product Introduction:
 
1.Board Size;90*60mm
2.Board Thickness:1.6mm
3.Flow Water Lamp Circuit : CD4017,NE888,LED;after correct connnection,it will operate 
4.Operating Voltage :3-12V
5.board material: international standard sheet, all tin pad, high strength fire drop material, can be repeated disassembly.
6. PCB board design is reasonable, are commonly used in the SMD components.
7. the left and right of the three components are used to practice welding, each column with a test point.
8. the middle of the circular circuit for the water lamp circuit, by the CD4017, NE555, light-emitting diodes, welding power can work.
9. the circuit is also used on the back, a ruler to facilitate the measurement of components. There are examples of PCB conductors to facilitate the use of PCB design.
 
Number of components: 125
Number of solder joints: 274
Use solder length: 35CM (diameter: 0.6mm)
Sample soldering time: 35 minutes
 
 
Note:
Please allow 0.5-1cm errors due to manual measurement
Item color displayed in photos may be showing slightly different on your computer monitor since monitors are not calibrated same

 
MAX30102 Heart Rate Sensor Module Puls Detection Heartbeat Blood Oxygen Concentration Test For Arduino STM32 Ultra-Low Power Product Features The MAX30102 is an integrated pulse oximeter and heart rate monitor biosensor module. It integrates a red LED and an infrared LED, photodetector, optical device, and low-noise electronic circuitry with ambient light suppression. The MAX30102 uses an 18V power supply and a separate 50V power supply for internal LEDs. Wear the device for heart rate and blood oxygen collection, and wear it on your fingers, earlobes and wrists. The standard I2C-compatible communication interface can transmit the collected values to the Arduino, KL25Z and other microcontrollers for heart rate and blood oxygen calculation. In addition, the chip can also shut down the module through software, the standby current is close to zero, and the power supply is always maintained. Because of its excellent performance, the chip is widely used in the Samsung Galaxy S series mobile phones. The chip integrates a glass cover to effectively eliminate external and internal light interference and has the best reliable performance. Product Parameters LED peak wavelength: 660nm/880nm LED supply voltage: 3.3~5V Detection signal type: Light reflection signal (PPG) Output signal interface: I2C interface Communication interface voltage: 18~3.3V~5V (optional) Board reserved assembly hole size: 0.5X8.5mm Working Principle Light-dissolving method: measuring the pulse and blood oxygen saturation by using human tissue to cause different light transmittance when the blood vessel beats; Light source: a specific wavelength illuminating pole tube selective for oxyhemoglobin (HbO2) and hemoglobin (Hb) in arterial blood; Transmittance is converted into electrical signal: the volume of the arterial pulsation is changed to the light transmittance of the light. At this time, the light is reflected by the human body tissue by photoelectric conversion, converted into an electrical signal and amplified and output. Pin Description VIN: main power supply input terminal 1.8V-5V; 3-bit pad: Select the pull-up level of the bus, depending on the pin master voltage, select 1.8v or 3.3V (this terminal contains 3.3V and above) SCL: Connect the clock of I2C bus; SDA: data connected to the I2C bus; INT : Interrupt pin of the MAX30102 chip; RD: RED of the MAX30102 chip, LED ground terminal, - generally not connected; IRD: The IR, LED grounding of the MAX30102 chip is generally not connected; GND : Ground wire

 
MAX30102 Heart Rate Sensor Module Puls Detection Heartbeat Blood Oxygen Concentration Test For Arduino STM32 Ultra-Low Power Product Features The MAX30102 is an integrated pulse oximeter and heart rate monitor biosensor module. It integrates a red LED and an infrared LED, photodetector, optical device, and low-noise electronic circuitry with ambient light suppression. The MAX30102 uses an 18V power supply and a separate 50V power supply for internal LEDs. Wear the device for heart rate and blood oxygen collection, and wear it on your fingers, earlobes and wrists. The standard I2C-compatible communication interface can transmit the collected values to the Arduino, KL25Z and other microcontrollers for heart rate and blood oxygen calculation. In addition, the chip can also shut down the module through software, the standby current is close to zero, and the power supply is always maintained. Because of its excellent performance, the chip is widely used in the Samsung Galaxy S series mobile phones. The chip integrates a glass cover to effectively eliminate external and internal light interference and has the best reliable performance. Product Parameters LED peak wavelength: 660nm/880nm LED supply voltage: 3.3~5V Detection signal type: Light reflection signal (PPG) Output signal interface: I2C interface Communication interface voltage: 18~3.3V~5V (optional) Board reserved assembly hole size: 0.5X8.5mm Working Principle Light-dissolving method: measuring the pulse and blood oxygen saturation by using human tissue to cause different light transmittance when the blood vessel beats; Light source: a specific wavelength illuminating pole tube selective for oxyhemoglobin (HbO2) and hemoglobin (Hb) in arterial blood; Transmittance is converted into electrical signal: the volume of the arterial pulsation is changed to the light transmittance of the light. At this time, the light is reflected by the human body tissue by photoelectric conversion, converted into an electrical signal and amplified and output. Pin Description VIN: main power supply input terminal 1.8V-5V; 3-bit pad: Select the pull-up level of the bus, depending on the pin master voltage, select 1.8v or 3.3V (this terminal contains 3.3V and above) SCL: Connect the clock of I2C bus; SDA: data connected to the I2C bus; INT : Interrupt pin of the MAX30102 chip; RD: RED of the MAX30102 chip, LED ground terminal, - generally not connected; IRD: The IR, LED grounding of the MAX30102 chip is generally not connected; GND : Ground wire

 
MAX30102 Heart Rate Sensor Module Puls Detection Heartbeat Blood Oxygen Concentration Test For Arduino STM32 Ultra-Low Power Product Features The MAX30102 is an integrated pulse oximeter and heart rate monitor biosensor module. It integrates a red LED and an infrared LED, photodetector, optical device, and low-noise electronic circuitry with ambient light suppression. The MAX30102 uses an 18V power supply and a separate 50V power supply for internal LEDs. Wear the device for heart rate and blood oxygen collection, and wear it on your fingers, earlobes and wrists. The standard I2C-compatible communication interface can transmit the collected values to the Arduino, KL25Z and other microcontrollers for heart rate and blood oxygen calculation. In addition, the chip can also shut down the module through software, the standby current is close to zero, and the power supply is always maintained. Because of its excellent performance, the chip is widely used in the Samsung Galaxy S series mobile phones. The chip integrates a glass cover to effectively eliminate external and internal light interference and has the best reliable performance. Product Parameters LED peak wavelength: 660nm/880nm LED supply voltage: 3.3~5V Detection signal type: Light reflection signal (PPG) Output signal interface: I2C interface Communication interface voltage: 18~3.3V~5V (optional) Board reserved assembly hole size: 0.5X8.5mm Working Principle Light-dissolving method: measuring the pulse and blood oxygen saturation by using human tissue to cause different light transmittance when the blood vessel beats; Light source: a specific wavelength illuminating pole tube selective for oxyhemoglobin (HbO2) and hemoglobin (Hb) in arterial blood; Transmittance is converted into electrical signal: the volume of the arterial pulsation is changed to the light transmittance of the light. At this time, the light is reflected by the human body tissue by photoelectric conversion, converted into an electrical signal and amplified and output. Pin Description VIN: main power supply input terminal 1.8V-5V; 3-bit pad: Select the pull-up level of the bus, depending on the pin master voltage, select 1.8v or 3.3V (this terminal contains 3.3V and above) SCL: Connect the clock of I2C bus; SDA: data connected to the I2C bus; INT : Interrupt pin of the MAX30102 chip; RD: RED of the MAX30102 chip, LED ground terminal, - generally not connected; IRD: The IR, LED grounding of the MAX30102 chip is generally not connected; GND : Ground wire

 
MAX30102 Heart Rate Sensor Module Puls Detection Heartbeat Blood Oxygen Concentration Test For Arduino STM32 Ultra-Low Power Product Features The MAX30102 is an integrated pulse oximeter and heart rate monitor biosensor module. It integrates a red LED and an infrared LED, photodetector, optical device, and low-noise electronic circuitry with ambient light suppression. The MAX30102 uses an 18V power supply and a separate 50V power supply for internal LEDs. Wear the device for heart rate and blood oxygen collection, and wear it on your fingers, earlobes and wrists. The standard I2C-compatible communication interface can transmit the collected values to the Arduino, KL25Z and other microcontrollers for heart rate and blood oxygen calculation. In addition, the chip can also shut down the module through software, the standby current is close to zero, and the power supply is always maintained. Because of its excellent performance, the chip is widely used in the Samsung Galaxy S series mobile phones. The chip integrates a glass cover to effectively eliminate external and internal light interference and has the best reliable performance. Product Parameters LED peak wavelength: 660nm/880nm LED supply voltage: 3.3~5V Detection signal type: Light reflection signal (PPG) Output signal interface: I2C interface Communication interface voltage: 18~3.3V~5V (optional) Board reserved assembly hole size: 0.5X8.5mm Working Principle Light-dissolving method: measuring the pulse and blood oxygen saturation by using human tissue to cause different light transmittance when the blood vessel beats; Light source: a specific wavelength illuminating pole tube selective for oxyhemoglobin (HbO2) and hemoglobin (Hb) in arterial blood; Transmittance is converted into electrical signal: the volume of the arterial pulsation is changed to the light transmittance of the light. At this time, the light is reflected by the human body tissue by photoelectric conversion, converted into an electrical signal and amplified and output. Pin Description VIN: main power supply input terminal 1.8V-5V; 3-bit pad: Select the pull-up level of the bus, depending on the pin master voltage, select 1.8v or 3.3V (this terminal contains 3.3V and above) SCL: Connect the clock of I2C bus; SDA: data connected to the I2C bus; INT : Interrupt pin of the MAX30102 chip; RD: RED of the MAX30102 chip, LED ground terminal, - generally not connected; IRD: The IR, LED grounding of the MAX30102 chip is generally not connected; GND : Ground wire

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Features: Electric Socket Wall AC Power Outlet Voltage Detector Sensor Tester Pen 90-1000V The next generation AC non-contact voltage testers are easy to use — just touch the tip to a terminal strip, outlet, or supply cord. When the tip glows red and the unit beeps, you know there is voltage present. Electricians, maintenance, service, safety personnel, and homeowners can quickly test for energized circuits in the workplace or at home.
A perfect tool kit for home and electric industry uses Ideal design for testing power cables, circuit breakers, wall sockets, junction boxes, fuses, etc Just press the button, white LED light can be always on when there is absence of voltage "Beep" sound and red flashing LED would indicate the presence of voltage Totally insulated, no exposed metal or conductive parts Long life and low power consumption Compact, safety, & easy to carry Specifications:
Frequency Range: 50 to 500 Hz
Test Voltage Range: 90-1000V AC
Safety Rating : CAT II 1000v Powered By: 2 x AAA Batteries (Not included)
Material: ABS Plastic Item
Size: 152*23*15mm
 

BMI160 6-axis inertial motion sensor
BBS: http://forum.mhetlive.com/ Product introduction The module uses Bosch's new BMI160 6-axis inertial motion sensor in a MEMS sensor package that integrates the top 16-bit 3-axis accelerometer with an ultra-low-power 3-axis gyroscope. The module can output acceleration data (acceleration values detected by the device in the X, Y, and Z directions) and gyroscope data (the speed at which the device rotates around the X, Y, and Z axes). When accelerometers and gyroscopes operate in full-speed mode, typical power consumption is as low as 950μA, which is only 50% or less of the power consumption of similar products on the market. Designed for smartphones, tablets, and wearable devices, the Bosch BMI160 includes a built-in smart step counter algorithm that reads the number of steps directly through the registers. The built-in 3-axis acceleration and 3-axis gyroscope enable motion detection such as running and fitness. Module built-in LDO power management chip, VIN supports 3.2~6V wide voltage supply, also has a separate 3.3V interface, compatible with Arduino 3.3V and 5V controller direct drive. Application 1. Walking step 2. Acceleration detection 3. Inclination measurement 4. Display screen switching horizontal / vertical mode Technical specifications Working voltage: 3.2V~6V Current consumption: <1ma interface="" mode:="" 2.54="" pitch="" pin="" header="" acceleration="" optional="" ruler:="" ±2g/±4g/±8g/±16g="" gyro="" optional="" scale:="" ±125°/s,="" ±250°/s,="" ±500°/s,="" ±1000°/s,="" ±2000°/s="" accelerometer="" zero="" drift:="" ±40mg="" gyroscope="" zero="" drift:="" ±10°/s="" programmable="" frequency:="" 25/32hz~1600hz="" 6d="" detection="" and="" positioning="" 16-bit="" data="" output="" impact="" resistance:="" 10,000="" gx="" 200μs="" 2="" independent="" programmable="" interrupt="" generators="" built-in="" 1024="" byte="" fifo="" working="" temperature:="" -40="" °="" c="" ~="" 85="" °="" c="">

Product Introduction:
1.Name:12V charger power control board
2.Model:XH-M601
3.Power Supply Voltage:13.8-14.8V
4.Relay Operating Voltage:12.4V
5.Relay Disconnect Voltage:14.8V
6.Voltage Tolerance: /-0.1V
7.Voltage Detection Way:DC voltmeter
8.Charging Type:12V storage battery
9.Potentiometer Adjustment:RP1 RP2
10.Size:50*32*18mm
Potentiometer Adjustment:
1.RP1:adjust storage battery start charging voltage (low voltage setting:clockwise becomes higher,counter-clockwise becomes lower)
2.RP2:adjust storage battery disconnect charging voltage (low voltage setting:clockwise becomes higher,counter-clockwise becomes lower)

Description:
Used in conjunction with the Duemilanove ProtoShield prototype expansion board, the circuit is used to build a prototype, can be directly soldered components on the board, you can also connect the above mini breadboard circuit. Bread board and circuit board via double-sided adhesive connections, sold bread board and the circuit board are separated.
 
ProtoShield prototype expansion board with two buttons and two LED circuit can be used directly, all of the pins and the power leads are very fit and build circuit prototyping with Ardui-no.

Amplifier Chip:TPA3110
Output Power:15W x 2
Working Voltage: DC 8-18V
Working Current: 
Max:3A 
Static state:8mA
Efficiency:≥90%
SNR:100dB
Frequency Range:20Hz-20KHz
Size: 33 x 25 x 3.5mm
Speaker:4-8Ω
Net Weight:about 4g

(no battery) DIY Power Bank BOX circuit board for Phone 1*18650 3.7V Li-ion Lithium Battery Charger
 
Specifications:
1. Brand: OEM
2. Weight: 60g
3.input: 5V-1A
4.Output: USB 5V-1A
5.Size:90*21(mm)
6. Color: black,silver,gold,red,blue,green,rose red
7.Only Suitable for Unprotected Flat Top 18650 3.7V Li-ion battery (not included)
8. In-built the function of over charge protection, over voltage protection, to protect your digital device and 18650 battery.
9. Support one battery, take the batteries to other device if you need anytime. It is not only a power bank , but also a charger . It is a Removable box, easy to open and close.
Package :
1 x power bank box (no battery)
1 x circuit board

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Description:
 
Note:This module is DIY Kit ,Not a finished product.
 
Features:
 
The sixteen-tone box can emit 16 interesting analog sound effects at will under your control. It is not only an electronic toy, but also a doorbell or alarm.
Parameter:
Supply voltage: DC 4.5V-5V
Board size: 4.8*4.1cm
Control method: manual coding external coding
Circuit principle:
Whole circuit with a 9561 tones of integrated circuits as the core, with four binary code to encode 9561 working condition control, make its produce 16 different analog sound. The whole circuit including noise generation circuit, basic additional control circuit and control circuit, the binary coding circuit and so much.
1. Sound generating circuit, U2 9561 with transistor Q1 and passive buzzer LS1.
2. Basic control circuits, with two binary digital control U3 of two selected the four kinds of working condition, make its produce four basic acoustics as required.
3. The additional control circuit, using the four states of two binary digital resistor R1, R2, R4, R5 produce a combination of four different to change 9561 external vibration resistance value, which changes the oscillation parameters, the change of the oscillation parameters, is not only changed the oscillation frequency, and derive a lot of new sound.
Combine basic control circuit and the additional control circuit, constitute A complete control circuit, is controlled by A B C D four binary encoding, make 9561 produce 16 different sounds.
4. The binary encoder circuit, the switch S1 - S4, resistance R6 - R9 etc binary encoder. S1, S2, S3, S4, corresponding binary digital A, B, C, D four. Switch to stir to 0, switch to stir to 1. Make up A, B, C, D four binary digital voice through control part 9561.
 

Warm prompt:
 
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Tracking info of  China Post Ordinary Small Packet Plus can be check here : www.17track.net/en

MQ-135 Air quality and hazardous gas detection sensor alarm module MQ135 module

Features:
DC power supply filter board Digital power amplifier interference suppression board Automotive power supply EMI suppression, current 4A, can meet
The current of the TPA3116 machine makes the power input more pure, so the amplifier is less noisy.
low voltage DC (0V~50V)
Terminal description:
Vin : input positive end
Vin-: input negative
Vout : output positive end
Vout-: negative output
Size:28mmx50mm

 LCD display LCD1602 shell case holder

Feature:
1:FOR Li-POLYMER  LiMnO Protect Parameter(3.6V/3.7V)  
2:Single Cell overcharge protect voltage:  4.23 - 4.28V  
3:Single Cell overcharge rotect recover voltage:  4.08 - 4.18  
4:overcharge protect delay:  0.5 - 1.5S  
5:Single Cell over-discharge protect voltage:   2.72 - 2.88V  
6:Single Cell over-discharge rotect recover voltage:   2.9 - 3.1V 
7:overcharge protect current:  60A  
8:over-discharge protect current: 60A 
9:over-discharge protectdelay: 0.5 - 1.5S
10:temperature protect: YES
11:disconnect protect: YES
12:shortage protect: YES
13:shortage delay: 100 - 600μS
14:shortage protect recover: YES
15:Charging current:  25A
16:discharging current: 25A
17:charging voltage : 12.6V for 3S , 16.8V for 4S, 21V for 5S BMS board
   
 
Feature:
1:10A BMS 1S 4.2V 2S 8.4V18650 Lipo lithium battery charging Module 
2:FOR Li-POLYMER  LiMnO Protect Parameter(4.2V)
3:Single cell battery overcharge protect voltage : 4.25-4.35 V
4:Single cell battery overcharge  protect recover voltage : 4.05-4.15 V
5:Overcharge protect delay : 1S
6:Single cell battery over-discharge  protect voltage : 2.3-2.5V  
7:Single cell battery over-discharge  protect recover voltage : 2.9-3.1 V
8:Overcharge protect Current : 16A
9:Over-discharge protect delay : 50-200mS
10:Disconnect protect : Yes
11:Short circuit protect : Yes
12:Short circuit delay : 50-100 uS
13:Charging current: 10A
14:Charging voltage: 4.2V for 1S BMS board, 8.4V for 2S BMS board.

Feature:
1:FOR Li-POLYMER  LiMnO Protect Parameter(3.6V/3.7V)  
2:Single Cell overcharge protect voltage:  4.23 - 4.28V  
3:Single Cell overcharge rotect recover voltage:  4.08 - 4.18  
4:overcharge protect delay:  0.5 - 1.5S  
5:Single Cell over-discharge protect voltage:   2.72 - 2.88V  
6:Single Cell over-discharge rotect recover voltage:   2.9 - 3.1V 
7:overcharge protect current:  60A  
8:over-discharge protect current: 60A 
9:over-discharge protectdelay: 0.5 - 1.5S
10:temperature protect: YES
11:disconnect protect: YES
12:shortage protect: YES
13:shortage delay: 100 - 600μS
14:shortage protect recover: YES
15:Charging current:  25A
16:discharging current: 25A
17:charging voltage : 12.6V for 3S , 16.8V for 4S, 21V for 5S BMS board
   
 
Feature:
1:10A BMS 1S 4.2V 2S 8.4V18650 Lipo lithium battery charging Module 
2:FOR Li-POLYMER  LiMnO Protect Parameter(4.2V)
3:Single cell battery overcharge protect voltage : 4.25-4.35 V
4:Single cell battery overcharge  protect recover voltage : 4.05-4.15 V
5:Overcharge protect delay : 1S
6:Single cell battery over-discharge  protect voltage : 2.3-2.5V  
7:Single cell battery over-discharge  protect recover voltage : 2.9-3.1 V
8:Overcharge protect Current : 16A
9:Over-discharge protect delay : 50-200mS
10:Disconnect protect : Yes
11:Short circuit protect : Yes
12:Short circuit delay : 50-100 uS
13:Charging current: 10A
14:Charging voltage: 4.2V for 1S BMS board, 8.4V for 2S BMS board.

Feature:
1:FOR Li-POLYMER  LiMnO Protect Parameter(3.6V/3.7V)  
2:Single Cell overcharge protect voltage:  4.23 - 4.28V  
3:Single Cell overcharge rotect recover voltage:  4.08 - 4.18  
4:overcharge protect delay:  0.5 - 1.5S  
5:Single Cell over-discharge protect voltage:   2.72 - 2.88V  
6:Single Cell over-discharge rotect recover voltage:   2.9 - 3.1V 
7:overcharge protect current:  60A  
8:over-discharge protect current: 60A 
9:over-discharge protectdelay: 0.5 - 1.5S
10:temperature protect: YES
11:disconnect protect: YES
12:shortage protect: YES
13:shortage delay: 100 - 600μS
14:shortage protect recover: YES
15:Charging current:  25A
16:discharging current: 25A
17:charging voltage : 12.6V for 3S , 16.8V for 4S, 21V for 5S BMS board
   
 
Feature:
1:10A BMS 1S 4.2V 2S 8.4V18650 Lipo lithium battery charging Module 
2:FOR Li-POLYMER  LiMnO Protect Parameter(4.2V)
3:Single cell battery overcharge protect voltage : 4.25-4.35 V
4:Single cell battery overcharge  protect recover voltage : 4.05-4.15 V
5:Overcharge protect delay : 1S
6:Single cell battery over-discharge  protect voltage : 2.3-2.5V  
7:Single cell battery over-discharge  protect recover voltage : 2.9-3.1 V
8:Overcharge protect Current : 16A
9:Over-discharge protect delay : 50-200mS
10:Disconnect protect : Yes
11:Short circuit protect : Yes
12:Short circuit delay : 50-100 uS
13:Charging current: 10A
14:Charging voltage: 4.2V for 1S BMS board, 8.4V for 2S BMS board.

Feature:
1:FOR Li-POLYMER  LiMnO Protect Parameter(3.6V/3.7V)  
2:Single Cell overcharge protect voltage:  4.23 - 4.28V  
3:Single Cell overcharge rotect recover voltage:  4.08 - 4.18  
4:overcharge protect delay:  0.5 - 1.5S  
5:Single Cell over-discharge protect voltage:   2.72 - 2.88V  
6:Single Cell over-discharge rotect recover voltage:   2.9 - 3.1V 
7:overcharge protect current:  60A  
8:over-discharge protect current: 60A 
9:over-discharge protectdelay: 0.5 - 1.5S
10:temperature protect: YES
11:disconnect protect: YES
12:shortage protect: YES
13:shortage delay: 100 - 600μS
14:shortage protect recover: YES
15:Charging current:  25A
16:discharging current: 25A
17:charging voltage : 12.6V for 3S , 16.8V for 4S, 21V for 5S BMS board
   
 
Feature:
1:10A BMS 1S 4.2V 2S 8.4V18650 Lipo lithium battery charging Module 
2:FOR Li-POLYMER  LiMnO Protect Parameter(4.2V)
3:Single cell battery overcharge protect voltage : 4.25-4.35 V
4:Single cell battery overcharge  protect recover voltage : 4.05-4.15 V
5:Overcharge protect delay : 1S
6:Single cell battery over-discharge  protect voltage : 2.3-2.5V  
7:Single cell battery over-discharge  protect recover voltage : 2.9-3.1 V
8:Overcharge protect Current : 16A
9:Over-discharge protect delay : 50-200mS
10:Disconnect protect : Yes
11:Short circuit protect : Yes
12:Short circuit delay : 50-100 uS
13:Charging current: 10A
14:Charging voltage: 4.2V for 1S BMS board, 8.4V for 2S BMS board.

Feature:
1:FOR Li-POLYMER  LiMnO Protect Parameter(3.6V/3.7V)  
2:Single Cell overcharge protect voltage:  4.23 - 4.28V  
3:Single Cell overcharge rotect recover voltage:  4.08 - 4.18  
4:overcharge protect delay:  0.5 - 1.5S  
5:Single Cell over-discharge protect voltage:   2.72 - 2.88V  
6:Single Cell over-discharge rotect recover voltage:   2.9 - 3.1V 
7:overcharge protect current:  60A  
8:over-discharge protect current: 60A 
9:over-discharge protectdelay: 0.5 - 1.5S
10:temperature protect: YES
11:disconnect protect: YES
12:shortage protect: YES
13:shortage delay: 100 - 600μS
14:shortage protect recover: YES
15:Charging current:  25A
16:discharging current: 25A
17:charging voltage : 12.6V for 3S , 16.8V for 4S, 21V for 5S BMS board
   
 
Feature:
1:10A BMS 1S 4.2V 2S 8.4V18650 Lipo lithium battery charging Module 
2:FOR Li-POLYMER  LiMnO Protect Parameter(4.2V)
3:Single cell battery overcharge protect voltage : 4.25-4.35 V
4:Single cell battery overcharge  protect recover voltage : 4.05-4.15 V
5:Overcharge protect delay : 1S
6:Single cell battery over-discharge  protect voltage : 2.3-2.5V  
7:Single cell battery over-discharge  protect recover voltage : 2.9-3.1 V
8:Overcharge protect Current : 16A
9:Over-discharge protect delay : 50-200mS
10:Disconnect protect : Yes
11:Short circuit protect : Yes
12:Short circuit delay : 50-100 uS
13:Charging current: 10A
14:Charging voltage: 4.2V for 1S BMS board, 8.4V for 2S BMS board.

1-8S Lipo/Li-ion/Fe RC helicopter airplane boat etc Battery Voltage 2 IN1 Tester Low Voltage Buzzer Alarm

Description:
Voltage:DC4-7V
Communication  interface:Single-wire communication
LED Chip:WS2812B
Conncetion:
5V to 5V
pin 6 to DI
GND to GND
Package Included:
1 X 16 X WS2812 5050 RGB LED

NOTE:
1) this board is not suit high power electronic tools, if use for screwdrier and drill, please don't buy
2)Above 3A device,means the battry discharge rate is more than 3C.
1C rated battery, 2000mah equals 2ah*1=2A max working current.
3C rated battery means 2ahx3=6A Max working current.
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, or load short circuit);
4) MOS transistor can control the battery charge and discharge;
5) low standby current consumption.
4S LI-ION BMS ParameterS:
Over Charge Voltage:4.25-4.35v±0.05v
Over Discharge Voltage: 2.3-3.0v±0.05v
Max working current:10A
Max Peak current:20A
Working Temperature:-40--- 50
Storage Temperature:-40-- 80
Small current:6uA
Life cycle:50000hours
Resistance:45mΩ
Short cut Protection:Protectable ,change for repair Size:35*35*3.0mm

he lsm6ds3 is an accelerometer and a huge 8kb FIFO buffer and an embedded processing interrupt function for the gyro sensor, specifically for the mobile phone market. Due to the ability and we have just created this small breakthrough board lsm6ds3 low cost! Each lsm6ds3 breakthrough design becomes super flexible and configurable specifically for many applications. With lsm6ds3 breakout, you will be able to detect the impact, tilt, movement, faucet, step, and even read the temperature! lsm6ds3 can read 6.7ks / s gyro accelerometer data and data on 1.7ks / s more accurate motion detection. As mentioned above, the break also has a buffering capability of up to 8KB between the data read, the host of the other sensors, the drive interrupt pin thanks to the lsm6ds3 built-in FIFO. Each pin has been broken in the lsm6ds3, side of the board, power and I2C functions while the other side of the motion pin controls the SPI function and interrupt the output. Keep in mind that lsm6ds3 is a 3.3V device that provides a voltage greater than ~ 3.6v to permanently damage the IC. Any 5V operating platform requires a logic level shifter. Feature: Power consumption: 0.9 mA combination of normal mode and 1.25 mA combination of high performance mode up to 1.6 kHz. Accelerometer and gyroscope low power experience Smart FIFO up to 8 bytes based on feature set 2/4/16/8 g ± 125/245/500 / ± ± 1000 / ± 2000 DPS comprehensive Analog supply voltage: 1.71 V to 5 V SPI serial interface with main processor data synchronization Embedded temperature sensor Module size 13 mm * 18mm Package Included: 1 X LSM6DS3 Accelerometer Gyroscope Sensor Breakout

HC-SR602
 
Working parameters:
Pyroelectric human body infrared sensor module, model: SR-602
Sensing distance: up to 5 meters; recommended 0-3.5M.
Output: high level, H=3.3V, L=0V
Power supply DC: 3.3V-15V
Quiescent current: 20uA
Features and uses:
This module has high sensitivity, fast response, small static power consumption, small size, easy to install, and is installed.
The lens, the pin header has been soldered, and the power supply is provided without debugging. Can be used for body sensor lights, alarms, security,
Access control on-demand imaging, automatic equipment for agriculture, forestry and mining.
Key points:
1. The high level time of the output of this product is adjustable, 2.5 seconds to 1 hour, the output time set at the factory.
It is 2.5 seconds, and you can change one chip resistor if you need to change it. Please read the resistance value corresponding to the typical delay time.
Refer to the relevant form below.
2. Blocking time, 2 seconds, not adjustable.
3. The factory is defined as repeatable trigger and cannot be changed.
4. The supply voltage of this module is 3.3V to 15V, and the limit voltage is 2.8V to 18V.
5. Module output timing is: output high level for 2 seconds after power-on, then go low, enter standby
status. If the delay time is changed, the time when the module outputs a high level after power-on will increase accordingly, which can be understood as
The startup time after entering the normal working state after the electric power will increase.
6. After installing the photosensitive element, it does not work during the day, work at night, does not contain photosensitive components, and works all day (  There are no photodiodes on the module,please purchase separately if needed. Recommended: ordinary F3 photodiode  )
It is considered that there is no photosensitive element installed.
7. This module is very sensitive, pay attention to the installation position, try to avoid the heat source radiation source (air outlet / direct sunlight)
8. The sensitivity of this module is adjustable, and you need to change a chip resistor. Please read the relevant table below for details.
grid.
9. When soldering with 220V ordinary soldering iron, it is necessary to unplug the power supply before welding. It is recommended to use
24V low voltage soldering iron, such as domestic white light 936.
10. If you follow the MCU and connect the lamp, please read the reference circuit diagram below.
 
 
 
 
 
 

Product Introduction
    JDY-23 transparent transmission module is based on Bluetooth 5.0 protocol standard, working frequency range is 2.4GHZ range, modulation mode is GFSK, maximum transmission power is 4db, maximum transmission distance is 60 meters, adopts imported original chip design, supports users to modify equipment through AT command Instructions such as name and baud rate are convenient and quick to use.
 
The JDY-23 Bluetooth module can realize module and mobile phone data transmission. By default, BLE Bluetooth can be used for product application without configuration.
 
 Make BLE faster and easier to use in products
 
Module Parameter Details
JDY-23 product parameters                                                        
model

JDY-23
Working frequency

2.4G
Transmit power

4db(maximum)
  Communication    Interface

UART
  Operating              Voltage

1.8V - 3.6V
Operating temperature

-40° - 80°
antenna

Built-in PCB antenna
  Receiving              sensitivity

-97dbm
Transmission distance

60 meter
  Master-slave        support

Slave
Module size

19.6 * 14.94 *1.8 mm(Length, width and height)
Bluetooth version

BLE 5.0(Compatible with BLE4.0, BLE4.2)
Awakening state current

800uA(Broadcast)
Light sleep state current

<50uA (Broadcast)
  Deep sleep            current

9uA (No broadcast)
  Instruction            parameter              saving

Parameter configuration power-down data is saved
SMT soldering temperature

<260°
rf-TX/RX peak current

5mA

Color of the PCB would be black or red randomly.  
overcharge detection voltage :4.25±0.025V
overcharge Lift the voltage:4.15±0.05V
over discharge detection voltage :2.50±0.08V
over discharge Lift the voltage:3.00±0.1V
overcurrent current:20-30A
working current:15A(Natural cooling 10A, add heat sink 15A, the maximum instantaneous current 30A)
Remove protection condition automatic recovery, without activatio
 
 
Termination conditions:the release of protection condition then automatic recovery, without activation (optional charger to activate)
Main functions: the overcharge protection function, overdischarge protection, short-circuit protection, over current protection.
Working temperature: -40~ 85 degrees (high temperature environment and please strengthen radiating)
Connection: welding output
Module size: 50mm*22mm*4mm
Applications:
The protective board can be used as the nominal voltage of 14.4V, 14.8V, 16.8V four series of polymer lithium battery group, four series of 18650 lithium batteries as overcharge and over discharge, short circuit protection. Without the activation function in the power application for high instantaneous current,and in inverter application for avoid false triggering protection.So it will use more convenient.
Note:No part design on the back, can be attached to the heat sink to ensure high current work situation for a long time. Color of the PCB would be black or red randomly.

Wireless Standard:802.11b/g/n
Frequency Range:2.4GHz-2.5GHz(2400M-2483.5M)
Data Interface:UART/HSPI/I2C/I2S/Ir Remote Control/GPIO/PWM
Operating Voltage:3.0-3.6V(We recommended 3.3V)
Operating Current:Average 80mA
Operating Temperature:-40~125°
Wireless Network Mode:station/softAP/SoftAP station
Safety Mode:WPA/WPA2
Encryption Type:WEP/TKIP/AES
Network Protocol:IPV4,TCP/UDP/HTTP/FTP

5S 21V 4.2V Balance Function Protection Board 68mA 5S Li-ion Lipo Battery Lithium 18650 Batteries Balanced Module BMS PCB

3296W-1-100   (10R)
3296W-1-500  (50R)
3296W-1-101 (100R)
3296W-1-201 (200R)
3296W-1-501 (500R)
3296W-1-102 (1K)
3296W-1-202 (2K)
3296W-1-502 (5K)
3296W-1-103 (10K)
3296W-1-203 (20K)
3296W-1-503 (50K)
3296W-1-104 (100K)
3296W-1-204 (200K)
3296W-1-504 (500K)
3296W-1-105 (1M)
3296W-1-205 (2M)

Shaft diameter: 6 mm
Standard shaft length :20MM
Outer diameter: 24 mm
Fair error of resistance value :±10%
Mechanical Angle :300°
Temperature range: -10°C -10 85°C
Rotation life :15000 revolutions
Power: 2 w

TDA7297 amplifier board spare parts dc 12v grade 2.0 dual audio encoding 15w electronic diy kit

[Description]
 
 
【RC522】
1, RFID-RC522 module one;
2, the standard S50 blank card one;
3, S50 shaped cards one (as shown keychain shape);
4, vertical, curved row of pins each one;
Note: The relevant technical details and the development of routines, etc. Want to contact customer service request, please buy download address.
Mainly includes the following:
A, supporting reference materials;
B, mainstream processors (including MSP430F149) RC522 module for this application C program;
RC522 chip [Introduction]
  MF RC522 is applied to 13.56MHz contactless communication highly integrated chip card reader, is NXP for the "Three Tables" application launch of a low-voltage, low-cost, small size and non-contact card reader chip, smart instrumentation and portable handheld devices developed better choice. MF RC522 using advanced modulation and demodulation concept completely integrated in all types of 13.56MHz passive contactless communication methods and protocols. Support 14443A compatible transponder signals. The digital part handles ISO14443A framing and error detection. In addition, support fast CRYPTO1 encryption algorithms, terminology validation MIFARE products. MFRC522 supports MIFARE Series higher speed non-contact communication, two-way data transfer rates up to 424kbit / s. As a highly integrated 13.56MHz card reader new family of chips, MF RC522 MF RC500 and MF RC530 and there are many similarities, but also have many features and differences. It is between the host communication using SPI mode, helps to reduce connection, reduce PCB board size and cost.
[Introduction] RFID module
    MF522-AN module adopts Philips MFRC522 original reader circuit chip design, easy to use, low cost, suitable for equipment development, development of advanced applications such reader users, the need for RF card terminal design / production of the user. This module can be loaded directly into a variety of readers molds. Module uses voltage of 3.3V, through the SPI interface simple few lines can be directly connected to the user any CPU board communication module can guarantee stable and reliable work, reader distance;
Electrical parameters [Introduction]
Current :13-26mA / DC 3.3V
Idle Current :10-13mA / DC 3.3V
Sleep current: <80uA
Peak current: <30mA
Operating Frequency: 13.56MHz
Supported card types: mifare1 S50, mifare1 S70, mifare UltraLight, mifare Pro, mifare Desfire
Product Physical Characteristics: Dimensions: 40mm × 60mm
Environmental Operating temperature: -20-80 degrees Celsius
Environment Storage temperature: -40-85 degrees Celsius
Relative Humidity: 5% -95%
[Module Interface SPI Parameters
Data Transfer Rate: Max. 10Mbit/s
 
 
【RC522 MINI】
【RC522 MINI Dimensions】
[Introduction to Electrical Parameters]
Working current: 13-26mA/DC 3.3V Idle current: 10-13mA / DC 3.3V Sleep current: <80uA Peak current: <30mA Working frequency: 13.56MHz Supported card types: mifare1 S50, mifare1 S70, mifare UltraLight, mifare Pro, mifare Desfire Product physical characteristics: size: 37.5mm × 33mm Environmental working temperature: -20-80 degrees Celsius Environmental storage temperature: -40-85 degrees Celsius Relative humidity: 5% -95% relative humidity
【RC522 MINI Interface definition】
Describe the details of the selling point above, attracting and providing trust to your potential users.
【RC522 MINI Schematic】
[Introduction to RC522 chip]
MF RC522 is a high-integration read/write card chip used in 13.56MHz contactless communication. It is a low-voltage, low-cost, small-sized contactless card reader chip introduced by NXP for "three-table" applications. It is a good choice for the development of smart meters and portable handheld devices. The MF RC522 utilizes advanced modulation and demodulation concepts and fully integrates all types of passive contactless communication methods and protocols at 13.56 MHz. Supports 14443A compatible transponder signals. The digital part handles ISO14443A frame and error detection. In addition, it supports the fast CRYPTO1 encryption algorithm and verifies the MIFARE series of products. The MFRC522 supports the MIFARE series of higher speed contactless communication with bidirectional data rates up to 424 kbit/s. As a new member of the 13.56MHz high-integration read-write card family, the MF RC522 has many similarities with the MF RC500 and MF RC530, as well as many features and differences. It uses SPI mode for communication with the host, which helps to reduce wiring, reduce PCB board size and reduce cost.
[Introduction to RFID Module]
The MF522-MINI module uses the RC522 original chip to design the card reader circuit. The module works at 13.56MHz frequency and conforms to the ISO14443A standard. It can support Mifare1 S50, Mifare1 S70, Mifare Light, Mifare UltraLight and Mifare Pro. Suitable for users of advanced applications such as device development and card reader development, and users who need to design/produce RF card terminals. This module can be directly loaded into various reader molds. The module adopts a voltage of 3.3V, and can directly connect with any CPU board of the user through several simple lines of the SPI interface, which can ensure stable and reliable operation of the module and long reading distance; the module is easy to use, highly reliable and small in size. Features such as helping customers to easily and quickly apply contactless cards to the system.

[Description]
 
 
【RC522】
1, RFID-RC522 module one;
2, the standard S50 blank card one;
3, S50 shaped cards one (as shown keychain shape);
4, vertical, curved row of pins each one;
Note: The relevant technical details and the development of routines, etc. Want to contact customer service request, please buy download address.
Mainly includes the following:
A, supporting reference materials;
B, mainstream processors (including MSP430F149) RC522 module for this application C program;
RC522 chip [Introduction]
  MF RC522 is applied to 13.56MHz contactless communication highly integrated chip card reader, is NXP for the "Three Tables" application launch of a low-voltage, low-cost, small size and non-contact card reader chip, smart instrumentation and portable handheld devices developed better choice. MF RC522 using advanced modulation and demodulation concept completely integrated in all types of 13.56MHz passive contactless communication methods and protocols. Support 14443A compatible transponder signals. The digital part handles ISO14443A framing and error detection. In addition, support fast CRYPTO1 encryption algorithms, terminology validation MIFARE products. MFRC522 supports MIFARE Series higher speed non-contact communication, two-way data transfer rates up to 424kbit / s. As a highly integrated 13.56MHz card reader new family of chips, MF RC522 MF RC500 and MF RC530 and there are many similarities, but also have many features and differences. It is between the host communication using SPI mode, helps to reduce connection, reduce PCB board size and cost.
[Introduction] RFID module
    MF522-AN module adopts Philips MFRC522 original reader circuit chip design, easy to use, low cost, suitable for equipment development, development of advanced applications such reader users, the need for RF card terminal design / production of the user. This module can be loaded directly into a variety of readers molds. Module uses voltage of 3.3V, through the SPI interface simple few lines can be directly connected to the user any CPU board communication module can guarantee stable and reliable work, reader distance;
Electrical parameters [Introduction]
Current :13-26mA / DC 3.3V
Idle Current :10-13mA / DC 3.3V
Sleep current: <80uA
Peak current: <30mA
Operating Frequency: 13.56MHz
Supported card types: mifare1 S50, mifare1 S70, mifare UltraLight, mifare Pro, mifare Desfire
Product Physical Characteristics: Dimensions: 40mm × 60mm
Environmental Operating temperature: -20-80 degrees Celsius
Environment Storage temperature: -40-85 degrees Celsius
Relative Humidity: 5% -95%
[Module Interface SPI Parameters
Data Transfer Rate: Max. 10Mbit/s
 
 
【RC522 MINI】
【RC522 MINI Dimensions】
[Introduction to Electrical Parameters]
Working current: 13-26mA/DC 3.3V Idle current: 10-13mA / DC 3.3V Sleep current: <80uA Peak current: <30mA Working frequency: 13.56MHz Supported card types: mifare1 S50, mifare1 S70, mifare UltraLight, mifare Pro, mifare Desfire Product physical characteristics: size: 37.5mm × 33mm Environmental working temperature: -20-80 degrees Celsius Environmental storage temperature: -40-85 degrees Celsius Relative humidity: 5% -95% relative humidity
【RC522 MINI Interface definition】
Describe the details of the selling point above, attracting and providing trust to your potential users.
【RC522 MINI Schematic】
[Introduction to RC522 chip]
MF RC522 is a high-integration read/write card chip used in 13.56MHz contactless communication. It is a low-voltage, low-cost, small-sized contactless card reader chip introduced by NXP for "three-table" applications. It is a good choice for the development of smart meters and portable handheld devices. The MF RC522 utilizes advanced modulation and demodulation concepts and fully integrates all types of passive contactless communication methods and protocols at 13.56 MHz. Supports 14443A compatible transponder signals. The digital part handles ISO14443A frame and error detection. In addition, it supports the fast CRYPTO1 encryption algorithm and verifies the MIFARE series of products. The MFRC522 supports the MIFARE series of higher speed contactless communication with bidirectional data rates up to 424 kbit/s. As a new member of the 13.56MHz high-integration read-write card family, the MF RC522 has many similarities with the MF RC500 and MF RC530, as well as many features and differences. It uses SPI mode for communication with the host, which helps to reduce wiring, reduce PCB board size and reduce cost.
[Introduction to RFID Module]
The MF522-MINI module uses the RC522 original chip to design the card reader circuit. The module works at 13.56MHz frequency and conforms to the ISO14443A standard. It can support Mifare1 S50, Mifare1 S70, Mifare Light, Mifare UltraLight and Mifare Pro. Suitable for users of advanced applications such as device development and card reader development, and users who need to design/produce RF card terminals. This module can be directly loaded into various reader molds. The module adopts a voltage of 3.3V, and can directly connect with any CPU board of the user through several simple lines of the SPI interface, which can ensure stable and reliable operation of the module and long reading distance; the module is easy to use, highly reliable and small in size. Features such as helping customers to easily and quickly apply contactless cards to the system.

Input 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
 
Applications
Solar panel to mobile phone charging
Car charging retrofit
Driving recorder power supply
Home power conversion