Re: [DisasterRadio] MPPT / Solar

On 1/16/20, samuk(a)disroot.org <samuk(a)disroot.org> wrote: Yeah that's the Waveshare module. Unfortunately it uses the CN3791 which is what we used on the previous disaster.radio prototype. It is not true MPPT and does did not perform well. It is super cheap though (less than 50 cents I believe). I think this one is probably decent: https://www.sparkfun.com/products/12885 but it has to be modified to support the full 2A and they didn't break out the temperature sensor pin. We just started working on our own MPPT module but that will take a while. You could also try to modify Elektra's ESP32 based module for Li-ion operation: https://media.ccc.de/v/36c3-oio-166-ff-esp32-openmppt-new-freifunk-isems-mp… -- marc/juul