|
Post by mattganis on Aug 24, 2017 13:45:30 GMT -8
I'm trying to use the Sun Air Plus to charge a Lipo battery for an Arduino project I have. I'm confused about where to source the 3.3v for the arduino (actually if it matters, it's an Adafruit feather M0) from the Sun Air.
I have the solar panel connected to J6 (solar)
I have the 3.7v lipo connected to J5 (battery)
where do I get the 3.3v to run the arduino ? I had thought it was going to be from JP13 (Vdd and Gnd) but that doesn't appear to work.
For fun, I grabbed the 5v and gnd from one of the servo connection - but that didn't seem to last very long.
sorry, just haven't found any clear-cut answer
--Matt Ganis
|
|
|
Post by SDL on Aug 25, 2017 8:24:08 GMT -8
Matt,
SunAirPlus only supplies 5V. It does not supply 3.3V. There are no pins the supply 3.3V on SunAirPlus.
Hope that clarifies things!
The next version of the SunControl board will have a switched 3.3V output for these kinds of products.
Best, BP
|
|
|
Post by mattganis on Aug 26, 2017 4:08:15 GMT -8
OK. I can still use 5v - but what are the proper pins (or bus) on the SunAir Plus to grab it ?
|
|
|
Post by SDL on Aug 26, 2017 12:41:32 GMT -8
Look at the SunAirPlus specification on page 11. JP23 - Utility VDD5. You can get 5V there.
BP
|
|