DIY ESS Kit Building Documentation is finished, now working on the User Manual and the Components List

As mentioned two days ago, the DIY ESS Kit Building Documentation has been in the works for more than a week now, reviewed it many times, and, last night, I finally added the last part on the IKEA PS Metal Cabinet to make the ESS safer & nicer looking.

The Documentation is now finished and today I should be working on the User Manual and the Components List with links and addresses to get them.

Once these last, smaller, documents are done, I will start buying Arduino boards to flash them with my program and the first version on my Kit, DIY ESS Kit #1 will be ready to ship :-)

LiFePO4 ESS update - Arduino & Relays - Test #2

The sketch / program I wrote to interface Wattson with Arduino seems to work OK
It needs a little tuning here and there but I am happy with this 2nd test :-)

On the netbook screen (right window) you can see the Serial port information sent by the Arduino board:

Green / Blue / Red voltages read every 500ms

Depending on these values the program puts the output pins to High or Low, which energizes or not the high voltage relays, which in turn switch ON or OFF the Grid Tie Inverters

And it is trying to keep Wattson in the Blue or Green modes, meaning Low usage, or Negative usage (but not too much waste)

If seems to work OK, but I will have to spend some more time tuning it