Adafruit Feather nRF52 Bluefruit LE nRF52832 ADA_eInk / ePaper Need an extremely accurate time

Need an extremely accurate time reference to maximize the efficiency of your IoT network of 5G devices

economical optical quadrature encoder can be attached to the 4mm rear shaft of a motor

and it works stably under the 3

2V lithium-polymer battery)

Arduino Peristaltic Pump

Adafruit Feather nRF52 Bluefruit LE nRF52832 ADA_eInk / ePaper Need an extremely accurate timeThe Adafruit Feather nRF52 Bluefruit is another easy to use all in one Bluetooth Low Energy board, with a native Bluetooth chip, the nRF52832! It's our take on an 'all in one' Arduino compatible + Bluetooth Low Energy with built in USB and battery charging. We have other boards in the Feather family, check them out here. This chip has twice the flash, SRAM and performance of the earlier nRF51 based Bluefruit modules. Best of all, it has Arduino IDE