Buck Converter, Yeeco AC/DC to DC Step Down Converter AC 2.5-27V DC 3-40V 24V 36V to DC 1.5-27V 12V Voltage Regulator Board 3A Adjustable Volt Transformer Power Supply Module

SMAKN® DC 5V/3A(MAX) AC/DC TO DC Buck Power Converter Voltage Step Dowm Power Supply Waterproof Input AC 7-36V/DC 8-50V

eBoot 6 Pack LM2596 DC to DC Buck Converter 3.0-40V to 1.5-35V Power Supply Step Down Module

ELEGOO 8 Channel DC 5V Relay Module with Optocoupler for Arduino UNO R3 MEGA 2560 1280 DSP ARM PIC AVR STM32 Raspberry Pi

diymore CH340 USB to ESP8266 ESP-01 ESP-01S Serial Wireless Development Board Wireless ESP8266 WiFi Adapter Module (USB to ESP8266)

Emakefun for Arduino Nano V3.0, Nano Board ATmega328P 5V 16M Micro-Controller Board with USB Cable (Pre-soldered Nano 5pcs)

HiLetgo 2pcs ESP8266 NodeMCU LUA CP2102 ESP-12E Internet WiFi Development Board Open Source Serial Wireless Module Works Great with Arduino IDE/Micropython (Pack of 2PCS)

MakerFocus 2pcs ESP8266 Module ESP-12E NodeMcu LUA WiFi Internet New Version Development Board

Leviton 42777-1WA Surface Mount Backbox, Single Gang, White, 1.89"

Adafruit HUZZAH32 – ESP32 Feather Board

Diymall 0.96" Inch Blue and Yellow I2c IIC Serial Oled LCD LED Module 12864 128X64 for Arduino Display Raspberry PI 51 Msp420 Stim32 SCR