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Do test run of solar system #solarpi
It seems to be working?! #solarpi
Test cellular on a sunny day #solarpi
Put the whole thing together and see if it explodes #solarpi
Assemble v2 build #solarpi
Wait for good 18650s to arrive #solarpi
Wait for the 4x18650 battery case to arrive to see if it's viable #solarpi
Duct tape enough insulation to run the solar system outside for a while #solarpi
Charge it from the sun with no load, see if that fixes it #solarpi
Bang head against mystery problem #solarpi
Looks like a supercapacitor and no battery did the trick (during the day at least) #solarpi
Charge the 4x18650 pack #solarpi
Try running it without the battery pack, just solar + ultracapacitors #solarpi
Wait for supercapacitors to arrive #solarpi
Find a better battery pack that can charge and supply power at the same time #solarpi
Set up 3G SIM card #solarpi
Work out why this thing isn't booting #solarpi
launch solar optimization 
#stekker
Install supercapacitors #solarpi
Wait for good 5v regulator to arrive #solarpi