Custom Hardware Power Management

I have managed to get the ESP8266 board into MODEM_SLEEP mode if I use Espressif’s RTOS SDK instead of esp-open-rtos.  This is a shame because I liked the esp-open-rtos sdk build system, but I don’t have time to try to modify the SDK.

Using the Espressif SDK allows us to get the current consumption down to 25mA, which should give about 6 hours with the 150 mAh batteries I have in mind for the project – a bit too short still, so may need to use 2 bateries, or think of something else to make the board sleep more – but it is looking feasible which is promising.

See update here:

Progress on Custom Hardware – 16 July 2017

We are making slow but steady progress with making a seizure detector that will run on low cost hardware.   We have all the software components for a workable seizure detector and just need to learn how to switch off the wifi radio to save power.   Then we need to re-commission the 3D printer so we can produce Laura’s case design to try it out.   Details at Custom Hardware Seizure Detector.

Initial model for 3d printed case