PowerBoost 1000 Charger - Rechargeable 5V Lipo USB Boost @ 1A (1000C) Brand_Spikenzie Labs You'll need a microcontroller with

You'll need a microcontroller with more than 512 bytes of RAM since the display must be buffered

A BLE heart rate monitor (you’ll need to add pulse-detection circuitry)

Ideal for creating RGB 7-segment displays

making it a great fit for security

we also have them in packs of 4

PowerBoost 1000 Charger - Rechargeable 5V Lipo USB Boost @ 1A (1000C) Brand_Spikenzie Labs You'll need a microcontroller withThe Adafruit PowerBoost 1000C is a compact 5V power supply and LiPo charger in one perfect for portable projects and DIY UPS systems. Powered by a 3. 7 V LiIon LiPoly battery, it boosts output to a steady 5. 2 V DC and supports load sharing, so your project runs even while charging. PowerBoost 1000C is the perfect power supply for your portable project! With a built in load sharing battery charger circuit, you'll be able to keep your power hungry