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

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

*** 4 Pack *** Photosensitive sensor for Arduino, STM32, ESP8266/ESP32, etc 3.3V-5V operation Digital and analog outputs Used to sense light (or dark) FREE Shipping to…

2-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 it…

*** 2 pcs STM32 development board w/ female headers, 1pcs ST-Link V2 *** Includes ST-Link V2 compatible USB programmer (brand/color may vary from that pictured) Also…

*** 10 Pack *** 20-Tooth GT2 Pulleys Includes set screws (2 per pulley) for affixing to motor/idler shaft Please consider taking advantage of our multi-item discount found…

Qty. 20 1×15 Female header 2.54mm (0.1″) spacing This is the correct size for Arduino Nano (2 pieces required per arduino) Please consider taking advantage…

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…

*** 3 Pack *** 0.96″ I2C/IIC Serial OLED Display Screen with WHITE text Resolution is 128×64  Compatible with Arduino, ESP8266, ESP32, Raspberry Pi, etc.  3.3V or 5V logic…

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…