Arduino on the ID100HR fitness tracker

posted in: BLE, Bluetooth, nRF51822 | 20

Some time ago…, Goran Mahovlic commented about how he was trying to run Arduino on an IDo 003, fitness tracker / smart watch which uses the nRF51822. As I’ve been interested in smart watches for some time, I thought I’d buy the same watch, and join in the fun. Unfortunately the first watch I bought didn’t contain an nRF51822 (see my other post about nRF51 based smart watches), so I ordered 2 more of … Read More

Don’t buy this smartwatch / fitness tracker !

posted in: BLE, nRF51822 | 14

Just a quick post about another smartwatch / fitness tracker that I was miss-sold on eBay Its title was A16 Bluetooth Smart Watch Health Wrist Bracelet Heart Rate Monitor Sports New Do NOT buy this watch   It is listed as using the Nordic nRF52832 Bluetooth MCU, but when I opened the watch to see how to reprogram it, I found it contained a Dialog processor   Unfortunately as I had already accepted … Read More

Blackmagic probe problems with a new nRF51822 device revision

I know quiet a few readers of the blog are interested in the nRF51822, and use either the Blackmagic probe or OpenOCD to program your devices. So I thought it worthwhile to share my experiences today, when I was unable to program a nRF51822QFAA device   To cut to the chase, the device identification in full is the nRF51822QFAAH1.  This appears to be a new revision of the QFAA device (16k RAM 256k flash), … Read More

Reprogramming the Dash Robotics Kamigami – Part 1

As regular readers will know, I’m a fan of the Nordic nRF51822 Bluetooth MCU, as it can be programmed developed using Open Source tools. So when I saw the Dash Robotics Kamigami at Bay Area Maker Faire in May, and spoke to their hardware engineer Dwight Springthorpe, who confirmed that this innovative educational toy used the nRF51822, I took the plunge and bought one on the spot – at the special show price 😉 … Read More

Arduino on the nRF51822 Bluetooth Low Energy microcontroller

Update May 2018   The articles about programming the nRF51xxx devices are now 3 years old and are only of use for historic reference. Please see the work done by Sandeep Mistry for the current status of Arduino development on these devices   Original post… This is the first in a series of posts about programming the Nordic Semiconductors nRF51822 Bluetooth low energy micro-controller using the Arduino IDE. The post is a big … Read More