GPIO 1 INTO 2: The esp32 breakout board can expand one GPIO pin of esp32 development board to two.Convenient to reuse all pins in smart home DIY projects. Great breadboard alternative. | 30Pins ref asin:B0BK13HWBJ ; B08D5ZD528 ; B07WCG1PLV ; B0B11N1X8R ; B0B19KRPRC ; B0B19DXFHX | The expansion board is a double-layer board. One pin is wired on both sides. Therefore, the circuit is stable and highly reliable, and there will be no poor circuit contact and unstable signal transmission. | Compatible with ESP32 board.These boards fit the 30 pin ESP32（ESP32 as the picture show） | Pin Header & Screw Terminal. you can select them as you asked | AITRIP breakout board can expand one GPIO pin of ESP32 development board to two, which is very nice for you to reuse all pins , it is a good tool for your smart home projects. Nice breadboard alternative

Using L298N made by ST company as the control chip,the module has such characteristics as strong driving ability,low calorific value and strong anti-interference ability. | This module can use built-in 78M05 for electric work via a driving power supply part.But to avoid the damage of the voltage stabilizing chip,please use an external 5V logic supply when using more than 12V driving voltage. | Using large capacity filter capacitor,this module can follow current to protect diodes,and improve the reliability. | Dual-channel H-bridge driver working mode creates higher working efficiency | To avoid damage the voltage stabilizing chip, please use an external 5V logic supply when using more than 12V driving voltage

2.4GHz Dual Mode WiFi + Bluetooth Development Board | Support LWIP protocol, Freertos | SupportThree Modes: AP, STA, and AP+STA | Ultra-Low power consumption, Compatible with Arduino IDE | ESP32 is a safe, reliable, and scalable to a variety of applications

TYPE-C USB D1 mini, it is a mini NodeMcu Lua WiFi board based on ESP-8266EX. | WIFI development board: on-board 5V 1A switching power supply, 4M bytes | this board contains 11 digital input and output pins, all pins have interrupt, PWN, I2C, 1-wire (except D0) and a micro USB connection; 1 input (under 3.2V), which compatible with Arduino; 500mA resettable fuse | WIFI development board,4M bytes.5V 1A switching power supply (switching power supply）onboard. | 6PCS ESP8266 ESP-12F D1 Mini TYPE-C USB Module Mini NodeMcu Lua 4M Bytes WLAN WiFi Internet Development Board for Arduino Compatible with WeMos D1 Mini NodeMcu

ESP8266 has powerful on-board processing and storage capabilities that allow it to be integrated with the sensors and other application specific devices through its GPIOs with minimal development up-front and minimal loading during runtime. Its high degree of on-chip integration allows for minimal external circuitry, and the entire solution, including front-end module, is designed to occupy minimal PCB area. | ESP8266 is a highly integrated chip designed for the needs of a new connected world.It offers a complete and self-contained Wi-Fi networking solution, allowing it to either host the application or to offload all Wi-Fi networking functions from another application processor. | This ESP8266 NodeMcu development board can be use for small temperature and humidity monitor in home automation project and works very well Compatible with Arduino development platform. | ESP8266 CH340 chip, power your development in the fastest way combinating with NodeMcu Firmware; It's a IOT unit with all available resources on board, support smart link and smart networking.

30PINS ESP32 Type C NodeMCU Development Board, ESP-WROOM-32, 2.4GHz Dual-Mode WiFi + Bluetooth Dual Cores Microcontroller Integrated, CP2102 Chip | The ESP32 development board is used together with the 2.4 GHz dual-form Wi-Fi and Bluetooth chip. It uses 40 nm low power supply technology. Very low power consumption, works perfectly for Arduino IDE. | ESP32 is secure, reliable and scalable for a wide range of applications. The ESP32 development board NodeMCU Module Powerful, supports LWIP protocol, freeRTOS. ESP32 also integrates rich peripherals such as capacitive touch sensors, Hall sensors, SD card interfaces and Ethernet interfaces. | GPIO 1 INTO 2：AITRIP 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；Note：Only compatible with 30 pins ESP32 development board | This ESP32 development board NodeMCU module is the ESP32 chip, which is scalable and self-adaptive. The power supply and radio frequency characteristics are good and can be extended to various applications

ESP32 is a safe, reliable, and scalable to a variety of applications | ESP32 development board support lua program, easy to develop, support LWIP protocol, Freertos, three modes : AP, STA and AP + STA. | Integrated 520-kBSRAM, 448-kBROM16-kBSRAMinRTC | USB driver chip: CH340C, with good system compatibility, higher download speed, and more stability. | you will get 2PCS PCS ESP32 Development Board TYPE-C USB CP2102 WiFi+Bluetooth Ultra-Low Power Consumption Dual Core ESP32-DevKitC-32 ESP-WROOM and 2PCS ESP32-DevKitC-32 ESP-WROOM-32 Expansion Board

Main Chip: ENC28J60-I/SO | RJ45 connector HR911105A isolation transformer | 3.3V power supply with SPI interface support connecting with 8/16/32 bit MCU | Compatible with 51,AVR,LPC,STM32 MCU | The board 25MHZ crystal

The Nano can be powered via the Type-C USB connection, 7-12V unregulated external power supply (pin 30), or 5V regulated external power supply (pin 27). The power source is automatically selected to the highest voltage source. | Support for external 5V~12V DC power supply, Support power supply by 9V battery. | The Nano is using the chips ATmega328P and CH340, Replace FT232RL. | It is a smallest, complete, and breadboard friendly board. It has everything that Diecimila/Duemilanove has (electrically) with more analog input pins and onboard +5V AREF jumper. | Uses the CH340G instead of the FTDI FT232RL IC which can improve the transfer speed, increase the stability in windows and solve the issues with FTDI drivers bricking non-original chips, ATMEGA328P offers even more programming and data memory space. It also has a pin layout that works well with the Mini or the Basic Stamp (TX, RX, ATN, GND on one side, power, and ground on the other). | Comes with 2packs of Nano V3.0 Micro Controller Module, each Nano V3.0 Micro Controller module is equipped with 3pcs pin headers (2pcs 15pin headers +1pcs 6pin headers), no welding needed.

Clock chip: high-precision clock chip DS3231SN; The DS3231 is an RTC IC developed by Maxim Integrated. It is a low cost, extremely accurate RTC IC with communication over I2C Interface. An interesting feature of DS3231 RTC IC is that it has integrated crystal oscillator and temperature sensor and hence you don’t have to connect an external crystal. | It is a low-cost, extremely accurate I2C real-time clock (RTC), with an integrated temperature-compensated crystal oscillator (TCXO) and crystal. | AITRIP 3PCS DS3231 Real Time Clock Module RTC Sensor High Precision AT24C32 IIC Timer Alarm Clock for Arduino Raspberry Pi | The DS3231 is an RTC IC developed by Maxim Integrated. It is a low cost, extremely accurate RTC IC with communication over I2C Interface. An interesting feature of DS3231 RTC IC is that it has integrated crystal oscillator and temperature sensor and hence you don’t have to connect an external crystal. | A precision temperature-compensated voltage reference and comparator circuit monitors the status of VCC to detect power failures, provide a reset output. In addition, RST pin is monitored as generating a μP reset. | The DS3231 is available in commercial and industrial temperature ranges, using a 16-pin 300mil SO package.

3PCS Type c 30pins CP2102 ESP-WROOM-32 ESP32 ESP-32S Development Board ESP32 CP2012 USB C (Type-C) core board | 30 Pin ESP32 ESP-32D ESP-WROOM-32 CP2012 USB C WiFi+Bluetooth Dual Core Type-C Interface ESP32-DevKitC-32 Development Board Module STA/AP/STA+AP | ESP32 integrates antenna, switches, RF balun, power amplifiers, low noise amplifiers, filters and power management modules. | With 2.4GHz WiFi+Bluetooth Dual-mode, support STA/AP/STA+AP mode, universal AT command, easy to use. | Package includes: 3 x ESP32 CP2012 USB-C (Type-C) Development Board Module 30pins

Pins Definition: DTR,RXD,TX,VCC,CTS,GND;RXD/TXD transceiver communication indicator | USB power has over current protection, using 500MA self-restore fuse. | Support Win95/98/98se/ME/2000/XP/win7 32bit 64bit /Vsita/, do not Support Win8 | Support Voltage:3.3V,5V | Package Content: 4pcs FT232RL USB To TTL Adapter

Built-in Type-C USB , with flash and reset switches, easy to program | the CH340 ESP-12E board is perfect for integrating into various electronic projects or IoT applications, offering flexibility and convenience. | Wireless Module CH340 NodeMcu V3 Lua WIFI Internet of Things Develop Board based ESP8266 ESP-12E, the serial wireless module delivers exceptional performance, ensuring seamless communication and data transmission over WiFi networks. | ESP8266 has powerful on-board processing and storage capabilities that allow it to be integrated with the sensors and other application specific devices through its GPIOs with minimal development up-front and minimal loading during runtime. Its high degree of on-chip integration allows for minimal external circuitry, and the entire solution, including front-end module, is designed to occupy minimal PCB area. | ESP8266 is a highly integrated chip designed for the needs of a new connected world.It offers a complete and self-contained Wi-Fi networking solution, allowing it to either host the application or to offload all Wi-Fi networking functions from another application processor

2.4GHz Dual Mode WiFi + Bluetooth Development Board | Support LWIP protocol, Freertos;ESP32 is a safe, reliable, and scalable to a variety of applications | SupportThree Modes: AP, STA, and AP+STA | Ultra-Low power consumption, Compatible with Arduino IDE | 1PCS 30Pin ESP32 Development Board 2.4GHz WiFi Dual Cores Microcontroller Integrated with Antenna RF Low Noise Amplifiers Filters

2.4GHz Dual Mode WiFi + Bluetooth Development Board | Support LWIP protocol, Freertos | SupportThree Modes: AP, STA, and AP+STA | Ultra-Low power consumption, Compatible with Arduino IDE | ESP32 is a safe, reliable, and scalable to a variety of applications

Test ranges:Inductors, capacitors , diodes, dual diode , mos, transistor, SCR , the regulator, LED tube, ESR, Resistance, Adjustable potentiometer | Can detect the transistor, MOSFET protection diode amplification coefficient and the base to determine the emitter transistor forward biased voltage. | High test speed, valid component test: 2 seconds (except in the larger capacitor of large capacitance measurement also takes a long time, the measured time of one minute is normal) | 128*64 big Backlight LCD display,only 2mA when stand by. | Auto power off function to avoid unnecessary waste, saving battery power, improved battery life