18 May 2016

Now that all my parts have arrived I can finally start work in earnest. The first step was to wire up all the various components. Having realised there aren't enough pins on an ATTINY85 to do what I wanted, I reverted back to using an ATMEGA168 for the bracelet side of things and an ATTINY85 for the sensor. My breadboards are now fully populated and all that's left is the coding.

Bracelet components

Sensor components

As to the coding, I have sorted out the various vibration and light patterns I would like for the bracelet and am now going about getting the NRF24L01 modules to talk to each other using this very handy tutorial from Gizmosnack here. I didn't want to go down the arduino route as I am a big fan of coding directly in C.

Circuit diagrams to follow soon!