*** 2-PACK ***  ESP32 ESP-WROOM-32 Development Board Powerful 32-Bit microcontroller with built-in Bluetooth 4.0 (BLE) and 2.4GHz WiFi With Pre-soldered breadboard headers and built-in USB-serial adapter,…

This listing includes 4 A4988 driver chips with heat sinks CNC Shield for Arduino UNO Supports 4 stepper drivers Can be used with A4988 or…

***3 PIECES*** ARM STM32 Dev Development Board – commonly known as the “Blue Pill” 32-bit microcontroller development board,new in sealed package containing 2×20 male pins…

Ships from (and made in) the USA.  USPS Priority Mail 3-day Color for this unit is BLUE (see pic added to this listing) Test video…

Pack of 100 threaded inserts. These create much more convenient and professional parts than using “captive nuts” (where you have to design a slot for…

Custom listing for buyer.  Aug 10 2017 Please consider our our multi-item discount found at the top of the listing page; it allows us to combine shipping…

*** 2 Pack *** New stepper motor cable for the most common NEMA 17 steppers found on 3D printers. Length is great for swapping to…

ST-Link V2 Programmer Color and markings may vary from picture. Includes 4-wire female<–>female adapter Useful for programming our “blue pill” boards, and other STM32 boards.…

*** 2 Pack *** Arduino Nano compatible Screw Terminal interface board These are great for securely connecting wires, especially when using a breadboard doesn’t make…

Stainless hex socket cap flat head machine screws Pack of 20 Photo may not be of exact item, for example we use pictures of one…