2019-04-28, 11:10 AM
(2019-04-28, 10:49 AM)festeraeb Wrote: The ina219 chip looks good but it tops out at 3-4 amps. My battery charger and generator ( from the engine) are more amps than that I believe. Will it just not be accurate or will it overload that board.
The INA needs to have a bigger shunt to measure higher currents, mine is piggy backed across a battery monitor shunt,
http://forum.openmarine.net/showthread.php?tid=1448
You can make the wiring much easier with a PCB, first time order these guys will send 10 boards in a few days for the cost of a couple of beers >
https://easyeda.com/editor#id=|1b1c30d88...06446aec1b
Then add an ESP32 ads1115, ina219 and bme280 for accurate barometer, voltage and current sent to Openplotter over wifi
Ongoing code here (bit messy and work in progress)
https://github.com/boatybits/DATA_SENDER