For small projects (like the iCufflinks) you’ll want a small battery. When even a AAA is too big, look to lithium coin cells! These are common, often used in calculators, watches, etc. We have two favorites, the CR2032 which is 20mm in diameter and the CR1220 which is 12mm. They are very popular sizes, and have other variations that may be less common (such as CR1216 which is only 1.6mm thick). Be sure to check our coin holder section as well to find a matching holder.
Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, TinyGO, or even use the Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for CircuitPython, MakeCode, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.
Have an amazing project to share? The Electronics Show and Tell is every Wednesday at 7:30pm ET! To join, head over to YouTube and check out the show’s live chat – we’ll post the link there.
Join us every Wednesday night at 8pm ET for Ask an Engineer!
Maker Business — Robotics manufacturer Anki is stripped for parts
Wearables — Form a flame
Electronics — Calc that whip!
Biohacking — Vitamin-C + Gelatin for Accelerated Recovery
Python for Microcontrollers — See you at Supercon, Python #2 language on GitHub and more! #Python #Adafruit #CircuitPython #PythonHardware @circuitpython @micropython @ThePSF @Adafruit
Adafruit IoT Monthly — Helping Harry's Heart, CircuitPython meets AWS IoT and more!
Microsoft MakeCode — Lenticular Art Display with Crickit
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