Best Keeyees in 2026

The controllers are easy to program by using the CP2102-USB interface without having to press the flash and reset buttons before each flash operation.

The development board has integrating GPIO, PWM, IIC, 1-Wire and ADC all in one board. Support smart link smart networking.

The fast and affordable technology for WiFi. Make your development the fastest way combined with firmware for NodeMcu.

No need to buy the LED Holders extra, this set contains 60Pcs 3mm LED Light Mounting Holders, with which you can easier to complete the project.

Easy to use, you just need to connect the positive and negative wires to your battery or power supply; Low power consumption and stable performance, long service life.

Extensive application areas, can be used in hobby lighting, boat, industrial, camera, toys, DIY computing and costume design.

The controllers are easy to program by using the micro-USB interface without having to press the flash and reset buttons before each flash operation.

The development board has integrating GPIO, PWM, IIC, 1-Wire and ADC all in one board. Support smart link smart networking.

The fast and affordable technology for WiFi. Make your development the fastest way combined with firmware for NodeMcu.

2 pin & 3 pin

Pitch: 5mm

Rated Value: AC 300V, 10A

★ 20 FEET LENGTH ★ The length is up to 20 feet (6.1m). It is more convenient to tailor and use according to your length needs. In addition, there are 30 Pcs reliable hose clamps in the package. This helps you fix the position and further prevent liquid leakage.

★ BRAIDED NYLON ★ Sandwich design. The nylon braided wire provides better support and makes the fuel line more resilient. It is difficult for leaks to occur. Average service life can be up to 5 years.

★ 30 Pcs HOSE CLAMPS ★ Made of 65Mn Spring Steel. Durable and sturdy, corrosion resistance. The clamps are springy, nice construction and hold well.

Timing belt: The timing belt is made of premium rubber, durable and flexible. It's designed specifically for linear motion, high positioning accuracy. Round tooth profile guarantees that the belt tooth fits smoothly.

Pulley: It’s used together with timing belt, very convenient to use. 20 Teeth contact with the belt, that minimizes the chance of the belt slipping.

Locking Spring: With the springs, you can add the right tension you need and make your prints much more precise.

【Principle】: The transfer board is generally used for debugging and maintenance. Use it to import or export signals to connect test equipment or provide a signal source.

【Ideal for DIY Circuits】: You can use it to build many circuits. Ideal for school and college projects, beginners and advanced amateurs.

【Easy to Use】: The circuit board is neatly processed and easy to solder. They can also be soldered repeatedly. The pin header has good conductivity and can be directly inserted into the circuit board for easy use.

This is a good parts kit for RC car project. It not only comes with 4pcs wheels and motors, but also 2pcs motor drive modules and 60pcs jumper wires, which are very useful accessories for your project.

Motor Drive Controller: L298N used as the main driver chip. It has the strong driving ability, low calorific value and strong anti-interference ability.

TT Motor: The motor is a two-axis motor with a reduction ratio of 1:48, which has strong anti-interference ability.

【Support 3.3V and 5V】: Supports 3.3V and 5V microcontrollers and circuit boards. The output voltage can be adjusted easily by the jumper cap!

【Easy to Use】: Applicable to WIN8.1 / 8/7 / XP 32-bit / 64-bit computer. It can be directly connected to the USB interface of the computer, which is very convenient to use. (Please note: this product is not suitable for WIN10)

【Easy to Program】: Programming interface is reserved, you can upgrade the downloader firmware by yourself. Programming software: AVR_fighter, PROGISP1.66, PROGISP1.67, PROGISP1.68, can also compile lower or higher software, programming is very convenient.

Mini Development Board based on ESP8266 chip.

This board contains 11 digital input / output pins, all pins have interrupt / pwm / I2C / 1-wire and a micro USB connection.

This board is 100% compatible with for Arduino and for WeMos.

The bi-directional logic level converter is a small device, which can safely steps down 5V signals to 3.3V and steps up 3.3V to 5V at the same time.

This level converter works with 2.8V and 1.8V devices, it can bidirectionally transfer with 4 channels between high logic voltage and low logic voltage.

Each logic level converter has the capability of converting 4 pins on the high side to 4 pins on the low side with two inputs and two outputs provided for each side.

【Easy crimping】 Connect the cables quickly without stripping and soldering.

【6 sizes】 The various lug sizes meet your different requirements.

【Quality copper】 The product uses a high quality copper core. High hardness, not easy to rust, wear and corrosion resistance. Good electrical conductivity and stable and reliable wiring.

This kit contains 12pcs SMD IC 6 Colors Test Hook Clips which are ideal for using this 24MHz 8CH logic analyzer.

If you are doing microcontroller, ARM system, FPGA development, we highly recommend you purchase this product! This item will help you solve your problem when you do MCU related products, especially for UART, SPI, IIC and other communication debugging.

Compatible with the Logic analysis software and open source programs such. B. sigrok (protocol analysis of RS232, SPI, IIC, 1-Wire, etc.)

This module is safe, reliable, and scalable to a variety of applications.

The module has 38 pins and has more features than a 30-pin module. Narrower width, compatible with breadboard

Support Lua program, easy to develop. Support of three modes: AP, STA and AP + STA.

【Wide Voltage】: Wide voltage input 7-70V, maximum output current 30A (Please refer to the recommended power range for actual use current. It is recommended that 12V within 250W, 24V within 350W, 48V within 450W, and 60V within 500W. )

【Speed Control Knob】: The knob has a switch function, which can control the motor speed from 0% to 100%. Adjustable potentiometer flexible cable can be separated, the cable length is 15CM.

【30A Fuse】: This set contains a 30A fuse to prevent shorting of the motor interface. Double protection of your Motor and Motor Speed Controller.

This Kit contains with 3pcs of digital sensor module, which can be independently enabled / disabled, which can measure not only the temperature humidity, but also the pressure.

The BMP280 sensor is great for all sorts of weather sensing and can even be used in both I2C and SPI! For simple easy wiring, go with I2C. If you want to connect a bunch of sensors without worrying about I2C address collisions, go with SPI.

Our BMP280 Sensor is the best low-cost, precision sensing solution for measuring barometric pressure with ±1 hPa absolute accuraccy, and temperature with ±1.0°C accuracy. Because pressure changes with altitude, and the pressure measurements are good, you can also use it as an altimeter with ±1 meter accuracy.

The SOP8 clip enables in-circuit programming of without disassembling the chip, making flashing the BIOS simpler and more efficient.

The main purpose of the CH341A Programmer is to back up, erase, program, calibrate and other actions on various software.

The CH341A programmer supports most of the 24/25 series SOP8 chips on the market, but not all of them. Please be sure to check whether your chip model is within the compatible range in the product description before purchasing.

IMPORTANT: Only compatible with 38 pins Narrow and No Mounting Hole Version esp32 development board, ref asin: B07QCP2451. Not applicable to other versions.

GPIO 1 INTO 2: This breakout board can expand one GPIO pin of esp32 development board to two, which is convenient for users to reuse all pins in smart home projects. Nice breadboard alternative.

2 TYPE CONNECTIONS: Pin Header & Screw Terminal. Just select them according to your purpose.

★ Stable performance ★ A4988 Driver Chip is low power consumption and will not be too hot during use. The performance is more stable than chip.

★ DC Power cable ★ The DC power cord can quickly connect to the DC power adapter and power the CNC shield board. Save time and more securer cable connection Plug and Work.

★ CNC Shield ★ This is the latest version of the expansion board, which can be used for engraving machines and 3D printers. It can drive 4 A4988 stepper motors.

√【For ESP8266 ESP-12E】: Specially designed by KeeYees technical team. It is fully compatible with ESP8266 ESP-12E.

√【GPIO 1 into 2】: This expansion board can expand one GPIO pin of Development Board to two, which is convenient for users to reuse pins for large-scale smart home projects.

√【2 Type Connections】: Two connection methods: Pin Header Connector & Screw Terminal. Just select them according to your purpose.

The relay can directly control a variety of equipment and loads, which meets international safety standards, and also has power and relay indicators.

This relay can be used not only as a microcontroller development board module, but also as a home appliance controller.

No need to buy the Jumper Wires extra, this set contains 20cm 10Pin female to female, female to male, male to male Dupont Jumper Wires, with which you can easier to complete the project.

No need to buy the Jumper Wires extra, this set contains 20cm 40Pin female to female, female to male, male to male Dupont Jumper Wires, with which you can easier to complete the project.

For Arduino, completely solves the traditional incompatible and instability of Win7 and Win8 system.

Support both 3.3V & 5V Power Supply and can meet different IO expansion requirements.

【Surface using Nickel-Plated】The KeeYees soil moisture module,the surface using nickel-plated treatment,widened sensor area,can improve the electrical conductivity, to prevent Sensor is easy to rust.

【Adjustable soil moisture】You can control the set value of soil moisture by adjusting the potentiometer on the module. Clockwise adjustment will increase the humidity and the counterclockwise will be smaller. When the humidity is lower than the set value, DO outputs a high level. When the humidity is higher than the set value, DO outputs a low level.

【Stable Performance】The KeeYees soil moisture sensor module iuses the LM393 chip and include dual mode output mode. More accurate with analog output.

★ For ESP8266 ESP-12E ★ Specially designed by KeeYees technical team. It is fully compatible with ESP8266 ESP-12E. It expands all the pins, which is very suitable for the project on the ESP8266 module.

★ GPIO 1 into 2 ★ This expansion board can expand one GPIO pin of Development Board to two, which is convenient for users to reuse all pins in smart home projects. Not only can the pins be connected through the pin header part, but also the terminal part can be expanded to lead out the same pins. Just select them according to your purpose.

★ Mini PCB Breadboard ★ An independent power row hole is led out at the front end of the PCB board. The required fixed components can be directly welded to facilitate circuit design.

【GY-BME280】Are you looking for a small, precise and energy-saving sensor for temperature, humidity and air pressure to implement your weather station project? Then you are exactly right here! With an I2C connection, it not only reliably displays temperature, pressure and humidity, but also makes some real-time forecasts for your region.

【Larger display】The 1.3" IIC OLED display has a wider viewing range than a 0.96" display. It has low power consumption, fast response and has high resolution (128*64). The bigger the display, the better the display!

【ESP8266】It can be used in various IoT applications. High performance ESP8266 microcontroller (ESP-12E) with 802.11 b / g / n WLAN and integrated 25dBm antenna. It offers a complete and self-contained Wi-Fi networking solution. The chip is the original chip and can be used directly without additional drivers. It has powerful on-board processing and storage capabilities and perfect match with the BME280 temperature and humidity sensor.

★ WiFi Wireless Module ★ The development board has integrating GPIO, PWM, IIC, 1-Wire and ADC all in one board. Support smart link smart networking. It is the fast and affordable technology for WiFi.

★ USB interface ★ The controllers are easy to program by using the USB interface without having to press the flash and reset buttons before each flash operation.

★ Just for ESP8266 Module ★ Specially designed by KeeYees technical team. It is fully compatible with ESP8266 ESP-12E. It expands all the pins, which is very suitable for the project on the ESP8266 module.

BREAKOUT BOARD FOR 38PIN ESP32: Specially designed by KeeYees technical team. It is fully compatible with 38 pins version esp32 development board. Not applicable to other versions.

GPIO 1 INTO 2: This breakout board can expand one GPIO pin of esp32 development board to two, which is convenient for users to reuse all pins in smart home projects. Nice breadboard alternative.

2 TYPE CONNECTIONS: Pin Header & Screw Terminal. Just select them according to your purpose.

★ ESP8266 Board ★ The development board has integrating GPIO, PWM, IIC, 1-Wire and ADC all in one board. Support smart link smart networking. It is the fast and affordable technology for WiFi.

★ Micro USB interface ★ The controllers are easy to program by using the Micro USB interface without having to press the flash and reset buttons before each flash operation.

★ Expansion Board ★ Specially designed by KeeYees technical team. It is fully compatible with ESP8266 ESP-12E. It expands all the pins, which is very suitable for the project on the ESP8266 module.

BREAKOUT BOARD FOR 30PIN ESP32: Specially designed by KeeYees technical team. It is fully compatible with 30 pins version esp32 development board. Not applicable to other versions.

GPIO 1 INTO 2: This breakout board can expand one GPIO pin of esp32 development board to two, which is convenient for users to reuse all pins in smart home projects. Nice breadboard alternative.

2 TYPE CONNECTIONS: Pin Header & Screw Terminal. Just select them according to your purpose.

Free PDF tutorial(more than 22 lessons) and clear listing in a nice package

The most economical kit based on Arduino platform to starting learning electronics for those beginners who are interested.

Lcd1602 module with pin header (not need to be soldered by yourself)