*** 2 Pieces *** ESP-8266 Development Board (commonly referred to as “NodeMCU”) USB-programmable (requires a microUSB cable); no extra programming device required. Built around the…

*** Includes male pins – Requires Soldering  *** Arduino Mega 2560 Compatible development board Features: ATmega2560 Microcontroller Built-in USB support for power and programming Power…

ESP-8266 Development Board with integrated ESP-12 board The ESP8266 is an extremely popular microcontroller similar to Arduino with built-in WiFi Typical ESP8266 ESP-12 boards do…

FREE USA SHIPPING! 2 Pack SPI MicroSD adapter, compatible with Arduino and other popular development boards Breadboard compatible.  New, sealed in anti-static bag. See our…

Black oxide coated hex socket cap flat head machine screws Pack of 20 Pictures may not be of the exact item listed – dimensions specified…

*** 6-PACK *** 40 Pin female header, 2 rows of 20 pins each.  2.54mm / 0.1″ spacing This header has extra long pins which is why…

Inductive probes are a popular way of adding bed level compensation ability to 3D printers. Marlin and other 3d printer firmwares support this.  Also useful…

Pack of 20 (Twenty) threaded inserts. These create much more convenient and professional parts than using “captive nuts” (where you have to design a slot…

Custom-designed and produced in-house $JAVA_HOME coaster, PACK OF 2 If you found this item, you probably know what JAVA_HOME is, but just in case —…

*** 2 Pack *** 32-bit ARM development board similar to Arduino Easier to use than the extremely popular “blue pill” STM32 dev boards (which we…