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Specification: 
Brand new
Compatible Wire Gauge (AWG): 18-26AWG
Pin Spacing: 2.54mm (0.1")
Rated voltage: 250V
Rated current: 3A
Quantity: 620pcs
These work great with all your typical and breadboard style pin connectors and sockets
This kit comes with the most common dupont pin housings in addition to male and female crimp pins - all in a high quality case
Package included:
200pcs x Female Crimp Pins
200pcs x Male Crimp Pins
10pcs x 2x6
10pcs x 2x5
10pcs x 2x4
10pcs x 2x3
10pcs x 2x2
20pcs x 1x6
20pcs x 1x5
20pcs x 1x4
20pcs x 1x3
40pcs x 1x2
50pcs x 1x1

single-chip sensor IC with tri-axis technology Tria Äis. , Which can sense any magnet moving around it. This makes the design of a new generation of non-contact joystick position sensor is often easier to meet the automotive, industrial and other fields of application.
Conventional planar Hall technology can only sense the magnetic field perpendicular to the surface of the chip strength; and TMLX90333 tri-axis Hall sensor can sense the vertical direction can be parallel to the chip surface magnetic field strength. This is achieved by the internal IMC (set of magnetic disk) to the chip.
Any type of magnet
CJMCU-93 is sensitive to magnetic flux density applied to the IC's three components (BX, BY and BZ). This allows the CJMCU-93 to sense any movement around the magnet. The Tria Äis product can detect any angle (0-360) and linear displacement, making it possible to design a new generation of non-contact lever position sensors Automotive and industrial applications (such as man-machine interfaces).
3D In addition, the measurement of BX capability and BZ, making CJMCU-93 to be universal non-contact position sensor is not limited to joystick applications, namely considered. For example, the linear stroke application scenario can be tested in one particular magnetic field design including the MLX90333.
Fully programmable
Melexis's tradition of fully programmable three-axis MLX90333 three-dimensional joystick position sensor IC (output transmission characteristics, output format, ie analog / PWM / serial protocol) and all protection features that can withstand harsh Of the conditions, combined with the appropriate signal. It is possible to measure the magnetic flux density of the IC in a non-contact manner, where a small magnet moves (axial magnetization). (2) These two angle information are calculated from the three (3) vector component flux densities (ie BX, BY and BZ). MLX90333 Report (2) Linear output signal. Choose between analog, PWM and serial protocol output formats.

Raspberry Pi 4,4B Metal Case, Raspberry Pi Armor Case with Dual Cooling Fan Aluminium Alloy, Radiation and Rust Protection for RPI 4/4B 
Made of aluminum with good thermal conductivity. Stripe design and cooling fan allows for more efficient heat dissipation in less time.
Updated manufacturing process with improved CNC aluminium alloy quality. Not easy to rust.
Silence without noise with great cooling performance, it can drop temp up to 30-37 degree.
All ports and slots of the case can match with Raspberry Pi 4 Model B perfectly.
Comes with dual quiet cooling fan, built-in heatsink and thermal tape, which makes your Pi cooler than others.
Used for Raspberry Pi 4 Model B Module.
The armor shell is made of aluminum alloy with CNC machining manufacturing technology. Its cool and attractive design are appreciated by the manufacturers.
Including dual fan and thermal tapes that reduce the temperature for the Raspberry Pi plate.
For dual fan and heat sink:
Design of low energy consumption.
Dual cooling experience, no more overheating problems.
Very quiet cooling fan, you won't be bother by the noise.
The high quality CNC aluminum alloy housing can protect your Pi safe. Radiation protection and difficult to rust.
Open design can make sure that our CNC casing does not affect the Wifi signal.
 

Raspberry Pi 4,4B Metal Case, Raspberry Pi Armor Case with Dual Cooling Fan Aluminium Alloy, Radiation and Rust Protection for RPI 4/4B 
Made of aluminum with good thermal conductivity. Stripe design and cooling fan allows for more efficient heat dissipation in less time.
Updated manufacturing process with improved CNC aluminium alloy quality. Not easy to rust.
Silence without noise with great cooling performance, it can drop temp up to 30-37 degree.
All ports and slots of the case can match with Raspberry Pi 4 Model B perfectly.
Comes with dual quiet cooling fan, built-in heatsink and thermal tape, which makes your Pi cooler than others.
Used for Raspberry Pi 4 Model B Module.
The armor shell is made of aluminum alloy with CNC machining manufacturing technology. Its cool and attractive design are appreciated by the manufacturers.
Including dual fan and thermal tapes that reduce the temperature for the Raspberry Pi plate.
For dual fan and heat sink:
Design of low energy consumption.
Dual cooling experience, no more overheating problems.
Very quiet cooling fan, you won't be bother by the noise.
The high quality CNC aluminum alloy housing can protect your Pi safe. Radiation protection and difficult to rust.
Open design can make sure that our CNC casing does not affect the Wifi signal.
 

  LCD module 3.5 inch TFT LCD screen 3.5 " for UNO R3 Board and support mega 2560 R3
 
Shipping list:
 
 1pc*3.5 inch TFT LCD
 1pc*Mega 2560 R3
 
 
 

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

Hot Raspberry Pi 3 Night Vision Camera Module Focal Adjustable 5MP OV5647 Sensor 1080p Raspberry Pi 2 Camera with 15cm FPC Cable
 
 

two 2 channel relay module 30A with optocoupler isolation 5V supports high and low Triger trigger for Smart home 
 
 
 
 
 
 
 
 
 
 
 
 

This wifi module is created and developed by Makerbase team,
which is capable of high transmission rate and stability .
 And, it is compatible greatly with MKS TFT24, MKS TFT28, MKS TFT32 display.
 
It not only supports document transfer  via APP ,
but also supports Cloud printing and firmware upgrading.
 

Product Parameters
Product model: XY-L10A
Control voltage: DC6~60v
Control current: 10A
Control accuracy: 0.1V
Output type: direct output
Voltage error: ±0.1V
Use range: various battery lithium batteries
Appearance size: 79*42MM
6-60V any battery, lithium battery can be used
LCD display, battery voltage, charge percentage and charging time at a glance
The function is very powerful, it can automatically charge control, can control the charging time, and can set and upload the corresponding parameters through the serial port

Description:
 
ITEAD PN532 NFC module, as its name implies, is based on PN532 chip and used for 13.56MHz near field communication. The module is equipped with onboard antenna, thus no external antenna coil is needed. It is compatible with SPI, IIC and UART interface for communication. With NFC library support for Arduino and Raspberry Pi offered by us, it is quite convenient for development of products with NFC functions.
 
Features:
 
1. Longest effective communication distance of 3 cm
2. Supports switching of SPI, IIC and UART interface.
3. Can be used for 13.56M non-contact communication
4. Compatible with ISO14443 Type A and Type B standards
 
 
Specifications:
IC: PN532
Operating Voltage:3.3V
Power Supply Voltage:3.3~5.5V
Max Supply Current:150mA
Working Current(Standby Mode):100mA
Working Current(Write Mode):120mA
Working Current(Read Mode):120mA
Indicator:PWR
Interface:SPI Interface, Std Raspberry Pi 20pins Interface
 

EG8010 is a digital, function very well bring their own dead-time control of pure sine wave inverter generator chip, used in two-stage DC-DC-AC power conversion structure or single-stage DC-AC power frequency transformer Boost architecture, an external 12MHz crystal oscillator, to achieve high precision, and harmonic distortion is very small, 50Hz or 60Hz pure sine wave inverter ASIC. The chip uses CMOS technology, the internal integration of SPWM sine generator, dead time control circuit, the multiplier factor range, soft start circuit, protection circuit, RS232 serial communication interface and a serial LCD driver module 1602 functions. 
 
Features:
- 5V single power supply
- Pin set up four kinds of pure sine wave output frequency: fixed frequency 50 hz pure sine wave; 60 hz fixed frequency pure sine wave; 0-100 hz pure sine wave frequency is adjustable; 0-400 hz pure sine wave frequency is adjustable.
- Unipolar and bipolar modulation
- Comes with deadband control, pin set up 4 dead time: 300nS dead time; 500nS dead time ; 1.0uS dead time ; 1.5uS dead time
- External 12MHz crystal oscillator
- PWM carrier frequency 23.4KHz
- Voltage, current, real time temperature feedback
- Overvoltage, undervoltage, overcurrent and overheating protection
- Soft-start mode pin setting the response time of 1S
- Serial communication to set the output voltage, frequency and other parameters External
- External serial port 128 * 32 LCD module 1602 display the voltage, frequency, temperature and electric current of the inverter and other information; 
 
Applications:
- Single phase pure sine wave inverter
- PV Inverter
- Wind power inverter
- Uninterruptible Power Supply UPS System
- Digital generator system
- IF power
- Single-phase motor speed controller
- Single-phase inverter
- Sine wave dimmer
- Sine wave regulator
- Sine wave generator
 
LCD description:
Notice: LCD does not contain cable
In the use of the LCD,Connection EGS002 driver board and LCD cable must use shielded cable, otherwise.Inverter, high-voltage high-current environment will seriously interfere with the operation of the drive plate
 
 
 

EG8010 is a digital, function very well bring their own dead-time control of pure sine wave inverter generator chip, used in two-stage DC-DC-AC power conversion structure or single-stage DC-AC power frequency transformer Boost architecture, an external 12MHz crystal oscillator, to achieve high precision, and harmonic distortion is very small, 50Hz or 60Hz pure sine wave inverter ASIC. The chip uses CMOS technology, the internal integration of SPWM sine generator, dead time control circuit, the multiplier factor range, soft start circuit, protection circuit, RS232 serial communication interface and a serial LCD driver module 1602 functions. 
 
Features:
- 5V single power supply
- Pin set up four kinds of pure sine wave output frequency: fixed frequency 50 hz pure sine wave; 60 hz fixed frequency pure sine wave; 0-100 hz pure sine wave frequency is adjustable; 0-400 hz pure sine wave frequency is adjustable.
- Unipolar and bipolar modulation
- Comes with deadband control, pin set up 4 dead time: 300nS dead time; 500nS dead time ; 1.0uS dead time ; 1.5uS dead time
- External 12MHz crystal oscillator
- PWM carrier frequency 23.4KHz
- Voltage, current, real time temperature feedback
- Overvoltage, undervoltage, overcurrent and overheating protection
- Soft-start mode pin setting the response time of 1S
- Serial communication to set the output voltage, frequency and other parameters External
- External serial port 128 * 32 LCD module 1602 display the voltage, frequency, temperature and electric current of the inverter and other information; 
 
Applications:
- Single phase pure sine wave inverter
- PV Inverter
- Wind power inverter
- Uninterruptible Power Supply UPS System
- Digital generator system
- IF power
- Single-phase motor speed controller
- Single-phase inverter
- Sine wave dimmer
- Sine wave regulator
- Sine wave generator
 
LCD description:
Notice: LCD does not contain cable
In the use of the LCD,Connection EGS002 driver board and LCD cable must use shielded cable, otherwise.Inverter, high-voltage high-current environment will seriously interfere with the operation of the drive plate
 
 
 

ESP-32S ESP-WROOM-32 ESP32 ESP-32 Bluetooth and WIFI Dual Core CPU with Low Power Consumption MCU ESP-32
 

 
 
 

 
 
Wiring Instructions:
         Note:
A single module can drive a 8x8 dot matrix common cathode
Operating Voltage: 5V
A single module can drive a 8x8 dot matrix common cathode
Operating Voltage: 5V
Dimensions: 12.8X12.8X1.3cm/
Fixing screws with 64 holes with a diameter 3mm
Module with input and output interfaces, support for cascading multiple modules
Quality:1Set
The left side of the module to the input port, the right to an output port
When the control of a single module, simply input port connected to CPU
When a plurality of cascaded modules, input and output termination CPU, an input terminal of the second output end of the first module a module, the first two modules of the input terminal of the three termination modules, and so on...
51 microcontrollers, for example:
VCC 5V
GND GND
DIN P2.2
CS P2.1
CLK P2.0
Size for manual measurement, there may be a 0 to 2 cm error, belongs to the normal phenomenon.
And due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!
 

 

Features:
 
Adopts NE5532 front chip for for better performance. 
High quality potentiometer contacts well, stable for audio output. 
Adjustment Types: 4 channels(treble alto bass volume) 
12-24V AC dual power supply, wide input voltage. 
For the input part, uses dual RCA plug, audio contacts well and long life span. 
Suitable for high-quality and professional sound equipment, telephone channel amplifier. 
 
 
Specifications:
 
Working Voltage: 12-24V AC Dual Power(12V-0-12V 24V-0-24V) 
Power Consumption: 5W 
Front Chip: NE5532 
Input Interface: RCA 
Output Interface: 2.54-3P 
Number of Channel: Dual-channel Audio 
PCB Board Size: 10 * 60 * 23mm / 3.94 * 2.36 * 0.9in  
Weight: 63g / 2.23oz 
Package Size: 12.5 * 10 * 2.5cm / 4.92 * 3.94 * 0.98in 
Package Weight: 75g / 2.65oz 

Hot Sale 5-15V 150W Mini ZVS Induction Heating Board Flyback Driver Heater DIY Cooker Ignition Coil
 

AT-09 BLE Bluetooth 4.0 Uart Transceiver Module CC2541 Central Switching compatible HM-10
 
Input voltage: 3.3V/5V only needs a set of power supply. 
Built in level conversion function. 
If you use MCU 5.0V and Bluetooth module communication, 5.0V power supply port, TX RX logic level 5V 
If you use MCU 3.3V and Bluetooth module communication, 3.3V power supply port, TX RX logic level 3.3V 
RX, Bluetooth module serial receiver and TXD MCU connection. 
TX, Bluetooth module serial port and RXD MCU connection. 
GND, ground terminal 
3.3V, power supply side 3.3V power supply 
5V, power supply side 5V power supply
 
 

AT-09 BLE Bluetooth 4.0 Uart Transceiver Module CC2541 Central Switching compatible HM-10
 
Input voltage: 3.3V/5V only needs a set of power supply. 
Built in level conversion function. 
If you use MCU 5.0V and Bluetooth module communication, 5.0V power supply port, TX RX logic level 5V 
If you use MCU 3.3V and Bluetooth module communication, 3.3V power supply port, TX RX logic level 3.3V 
RX, Bluetooth module serial receiver and TXD MCU connection. 
TX, Bluetooth module serial port and RXD MCU connection. 
GND, ground terminal 
3.3V, power supply side 3.3V power supply 
5V, power supply side 5V power supply
 
 

AT-09 BLE Bluetooth 4.0 Uart Transceiver Module CC2541 Central Switching compatible HM-10
 
Input voltage: 3.3V/5V only needs a set of power supply. 
Built in level conversion function. 
If you use MCU 5.0V and Bluetooth module communication, 5.0V power supply port, TX RX logic level 5V 
If you use MCU 3.3V and Bluetooth module communication, 3.3V power supply port, TX RX logic level 3.3V 
RX, Bluetooth module serial receiver and TXD MCU connection. 
TX, Bluetooth module serial port and RXD MCU connection. 
GND, ground terminal 
3.3V, power supply side 3.3V power supply 
5V, power supply side 5V power supply
 
 

  
 
 

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 61X WS2812 5050 RGB LED
 
 

Package included:
10 x M3 6mm Brass Female-Female Spacers
10 x M3 10mm Brass Female-Female Spacers
10 x M3 15mm Brass Female-Female Spacers
10 x M3 20mm Brass Female-Female Spacers
10 x M3 6mm 6mm Brass Male-Female Spacers
10 x M3 10 6mmmm Brass Male-Female Spacers
10 x M3 15mm 6mm Brass Male-Female Spacers
10 x M3 20mm 6mm Brass Male-Female Spacers
20 x M3 Stainless Steel Screws
20 x M3 6mm Stainless Steel Nuts

New TB6612FNG WeMos D1 mini I2C Dual Motor Driver Shield Driver Module
 

I2C SMBUS INA3221 Triple-Channel Shunt Current Power Supply Voltage Monitor Sensor Board Module Replace INA219 With Pins
The INA3221 is a three-channel, high-side current and bus voltage monitor with an I2C- and SMBUScompatible interface. The INA3221 monitors both shunt voltage drops and bus supply voltages, in addition to having programmable conversion times and averaging modes for these signals. The INA3221 offers both critical and warning alerts to detect multiple programmable out-of-range conditions for each channel.
The INA3221 senses current on buses that can vary from 0 V to 26 V. The device is powered from a single 2.7-V to 5.5-V supply, and draws 350 uA (typ)of supply current. The INA3221 is specified over the operating temperature range of -40°C to 125°C.
The I2C- and SMBUS-compatible interface features four programmable addresses.1. Triple-Channel with different bus voltage.
2. 0.1 ohm 1% 2W current sense resistor.
3. Up to 26V target voltage, with ±8mV resolution.
4. Up to ±1.638A current measurement, with ±0.4mA resolution.
5. Dimension: 38*32 mm.
6. PCB (no header or terminal block): 4.4g.
7. This board/chip uses I2C 7-bit addresses 0x40, 0x41, 0x44, 0x45, selectable with jumpers.
 

Modbus-Rtu 1/2/ Channel 12V Relay Module Switch Modbus RTU 4 Channel Relay Output 12V Switch Input 485 Communication TTL Pin He
 
1, VCC, GND: dc7-24v power input;
2, IN, GND: dc3.3-30v optocoupler signal input;
3, A , B- : RS485 communication interface, A , B- connect to external control terminal A , B-;
4. Relay switch signal output:
NC: normally closed end, short connection with COM before the relay closes, and suspension after the relay closes;
COM: common terminal;
NO: normal start, suspended before relay suction, short connection with COM after suction.
5. Relay indicator light: it is lit when the relay is closed;
GND, RXD, TXD: TTL level UART communication interface, GND, RXD, TXD are connected to GND, TXD, RXD of external control terminal respectively;
3. Introduction to Modbus RTU command
Modbus devices perform related operations by receiving Modbus RTU instructions from external control terminals (such as upper computer /MCU). A frame instruction is generally composed of device address, function code, register address, register data and check code, and the frame length is related to the function code. Generally, the first byte of each frame data is the device address, and the range can be set to 1-255, with the default of 255 (i.e. 0xFF), and the last 2 bytes are CRC checksum codes.
Assuming the device address is 255, the common Modbus RTU instructions are as follows:

Modbus-Rtu 1/2/ Channel 12V Relay Module Switch Modbus RTU 4 Channel Relay Output 12V Switch Input 485 Communication TTL Pin He
 
1, VCC, GND: dc7-24v power input;
2, IN, GND: dc3.3-30v optocoupler signal input;
3, A , B- : RS485 communication interface, A , B- connect to external control terminal A , B-;
4. Relay switch signal output:
NC: normally closed end, short connection with COM before the relay closes, and suspension after the relay closes;
COM: common terminal;
NO: normal start, suspended before relay suction, short connection with COM after suction.
5. Relay indicator light: it is lit when the relay is closed;
GND, RXD, TXD: TTL level UART communication interface, GND, RXD, TXD are connected to GND, TXD, RXD of external control terminal respectively;
3. Introduction to Modbus RTU command
Modbus devices perform related operations by receiving Modbus RTU instructions from external control terminals (such as upper computer /MCU). A frame instruction is generally composed of device address, function code, register address, register data and check code, and the frame length is related to the function code. Generally, the first byte of each frame data is the device address, and the range can be set to 1-255, with the default of 255 (i.e. 0xFF), and the last 2 bytes are CRC checksum codes.
Assuming the device address is 255, the common Modbus RTU instructions are as follows:

 
MOSFET is an electronic devices with good switching characteristics. It is widely used in circuits, such as power supplies switching ,motor drives, lighting dimmer and so on. Relay is another kind of module with switching characteristics. Since relay works relying on mechanical contacts to open or shut. In this way it s will inevitably lead to relay's stopping working while switching time is too short. And papa sound made by relay in some situations is annoying.
We designed a 4-channel MOSFET switch. It can supply up to four groups of electronic switches to control different circuit blocks respectively. Limited by the working priciples, MOSFET can only be used to control the DC circuit, such as DC-LED screen and so on, but not suitable for AC circuit control.
In some extreme cases,It can be used to control 100V/33A DC circuit. However, it is suggested that the controlled DC voltage is more than 9V.
Shipping Included:
1PCS*For 4 Route MOSFET Button IRF540 V4.0

Specification:
 
 
1.Board Size:73*15mm
2.Functuon:Testing whether AC 220V is existed 
3.Ouput TTL Level:can use SCM to test,voltage is 3-5V
4.Adaptive to PLC 24V level
 
 
Product Introduction:
 
 
Output TTL level can be detected with the microcontroller. The power supply can be 3-5V
Can also access PLC24V level
Then the PLC input terminal of the PLC COM power supply 24V input termination of the board signal output OUT, optocoupler board GND power negative
Blue 2P 5.0 terminal connected to 220V voltage
3P terminal connected to the microcontroller input.
 
 
Safety warning:
 
 
When the power module in the power of the board after the white wire frame can not touch any device .. because it is high voltage. Note the safety of electricity.
 
Feature:
 
 
Functuon: Test whether AC 220V is existed
 
Ouput TTL Level: can use MCU to test,voltage is 3-5V
 
Output can connect PLC 24V
 
 
Wiring:
 
 
When connecting the PLC input, the PLC's COM terminal is connected to the 24V power supply, the input is connected to signal outputs S1-S8 of the board, optocoupler GND is connected to the power supply negative.
 
Blue 5.0 terminal is connected to 220V voltage, yellow pin signal output.
 
When the 220V voltage is normal, it output low level; when 220V is powered off, it output high level.
 
 
Note:
 
Do not touch any part of the white wire frame on the board after the module is powered on, because it is high voltage. Pay attention to electricity safety.

Specification:
 
 
1.Board Size:73*15mm
2.Functuon:Testing whether AC 220V is existed 
3.Ouput TTL Level:can use SCM to test,voltage is 3-5V
4.Adaptive to PLC 24V level
 
 
Product Introduction:
 
 
Output TTL level can be detected with the microcontroller. The power supply can be 3-5V
Can also access PLC24V level
Then the PLC input terminal of the PLC COM power supply 24V input termination of the board signal output OUT, optocoupler board GND power negative
Blue 2P 5.0 terminal connected to 220V voltage
3P terminal connected to the microcontroller input.
 
 
Safety warning:
 
 
When the power module in the power of the board after the white wire frame can not touch any device .. because it is high voltage. Note the safety of electricity.
 
Feature:
 
 
Functuon: Test whether AC 220V is existed
 
Ouput TTL Level: can use MCU to test,voltage is 3-5V
 
Output can connect PLC 24V
 
 
Wiring:
 
 
When connecting the PLC input, the PLC's COM terminal is connected to the 24V power supply, the input is connected to signal outputs S1-S8 of the board, optocoupler GND is connected to the power supply negative.
 
Blue 5.0 terminal is connected to 220V voltage, yellow pin signal output.
 
When the 220V voltage is normal, it output low level; when 220V is powered off, it output high level.
 
 
Note:
 
Do not touch any part of the white wire frame on the board after the module is powered on, because it is high voltage. Pay attention to electricity safety.

Specification:
 
 
1.Board Size:73*15mm
2.Functuon:Testing whether AC 220V is existed 
3.Ouput TTL Level:can use SCM to test,voltage is 3-5V
4.Adaptive to PLC 24V level
 
 
Product Introduction:
 
 
Output TTL level can be detected with the microcontroller. The power supply can be 3-5V
Can also access PLC24V level
Then the PLC input terminal of the PLC COM power supply 24V input termination of the board signal output OUT, optocoupler board GND power negative
Blue 2P 5.0 terminal connected to 220V voltage
3P terminal connected to the microcontroller input.
 
 
Safety warning:
 
 
When the power module in the power of the board after the white wire frame can not touch any device .. because it is high voltage. Note the safety of electricity.
 
Feature:
 
 
Functuon: Test whether AC 220V is existed
 
Ouput TTL Level: can use MCU to test,voltage is 3-5V
 
Output can connect PLC 24V
 
 
Wiring:
 
 
When connecting the PLC input, the PLC's COM terminal is connected to the 24V power supply, the input is connected to signal outputs S1-S8 of the board, optocoupler GND is connected to the power supply negative.
 
Blue 5.0 terminal is connected to 220V voltage, yellow pin signal output.
 
When the 220V voltage is normal, it output low level; when 220V is powered off, it output high level.
 
 
Note:
 
Do not touch any part of the white wire frame on the board after the module is powered on, because it is high voltage. Pay attention to electricity safety.

ESP32 Development Board WiFi Bluetooth Ultra-Low Power Consumption Dual Core ESP-32 ESP-32S ESP 32 Similar ESP8266
 

10Pcs/lot 100K ohm NTC 3950 Thermistors with cable for 3D Printer Reprap Mend
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

Product overview
smart voice module,
Integrated IO trigger, UART protocol control, One_line single-bus protocol control,
standard MP3 and other 7 operating modes setting by DIP switch; Drive 4~8, 3~5W 
speaker by a 5W class D audio amplifier on board;Support MP3.WAV decoding; Support
TF card for maximum 32G downloading music files directly by micro USB connector.
Product characteristics
1.Support MP3.WAV decoding
2.Support sampling rate (KHz):8/11.025/12/16/22.05/24/32/44.1/48
3.24bit DAC output,support dynamic range 90dB,SNR 85dB
4.Support FAT16/FAT32 file system,support TF card for maximum 32G
5.Drive 4~8 speaker by 5W class D amplifier chip on board
6.Play 65535 pieces of music by UART control protocol; Play, Pause, Selecting music, 
VOL /- and so on can be controlled,the communication baud rate is 9600bps
7.Play 255 pieces of music by IO triggering; 
8.Play music by One_line control protocol,Play, Pause, Selecting music, VOL /- and so on
can be controlled.
9.Switch 7 operating modes using DIP switch easily
Package Included:
1 x voice module
 

Digispark Pro kickstarter development board use Micro ATTINY167 module for usb

 
100% brand new and high quality
This is a USB 2.0 to TTL UART 6PIN CP2104 Module Serial Converter
Designed to be used for USB to TTL electronic projects
TTL interface output, Connect MCU easily to your computer
Built-in USB to RS232 Transfer chip
USB specification 2.0 compliant with full-speed 12Mbps
Standard USB type A male and TTL 6pin connector. 6pins for 3.3V, RST, TXD, RXD, GND & 5V
Event character support Line break transmission
USB suspend states supported via SUSPEND pins
Temperature Range: -40? to 85?
Supports Windows 98SE, 2000, XP, Vista, Window7, Mac OS 9, Mac OS X & Linux 2.40
Dimension: 52 mm x 17 mm (LxW)
use the same driver as CP2102 module
The driver:http://www.silabs.com/products/interface/usbtouart/Pages/usb-to-uart-bridge.aspx
 

 KEYES For KY - 040 rotary encoder module
 
 
 
 
 
 
 

VK-172 GMOUSE USB GPS/GLONASS USB FZ1007
 
Supported operating systems: Windows 8/7/Vista/XP/CE
VK-172 automatically adapt the baud rate, the baud rate has any data output
Support Google Earth
C / A code, 1.023MHz stream
Receive Band: L1 [1575.42MHz]
Tracking Channels: 56
Support DGPS [WAAS, EGNOS and MSAS]
Positioning performance :
2D plane: 5m [average]
2D plane: 3.5m [average], has DGPS auxiliary.
Drift: <0.02m / s
Timing Accuracy: 1us
Reference coordinate system: WGS-84
Maximum altitude: 18,000 m
Maximum speed: 500m / s
Acceleration: <4g
Electrical properties:
Tracking sensitivity:-162dBm
Acquisition sensitivity:-160dBm
Cold Start Time: 29s [average]
Warm start time: 28s [average]
Hot start time: 1s [average]
Recapture Time: 0.1s [average]
Operating temperature:
-30 to 80
Package included
1X VK-172 GMOUSE USB GPS/GLONASS USB
 
 
 
 
 
 
 
 
 
 
 
 
 

Feature:
Designed to meet the requirements of the electronics
Precision engineering industries.
100% brand new and high quality
ESD Safe Tweezers Anti-Static
Size:
ESD-10:anti-static (110mm)
ESD-11:fine tip straight (140mm)
ESD-12:fine tip straight (135mm)
ESD-13:fine and Round (115mm)
ESD-14:Super fine tip straight (110mm)
ESD-15:fine tip curved (120mm).
Package Include:
1 x ESD-10 Tweezer
1 x ESD-11 Tweezer
1 x ESD-12 Tweezer
1 x ESD-13 Tweezer
1 x ESD-14 Tweezer
1 x ESD-15 Tweezer