Hacking a $25 nRF51 ARM Cortex Activity Tracker

$25 wearable device development platform: nRF51 ARM CortexM0 w/ Bluetooth, accelerometer, 16x64 OLED, vibration motor, HR sensor, battery

Curt White

Quantity		Component name
1	×	"M3" nRF51822 based activity tracker Look for it on ebay, AliExpress, Bangood and Amazon. Also try Google Image Search for "M3 nrf52822 activity tracker".