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Logging battery amps
#31
Negative side should be also connected to ground. Load should be connected between negative side and -Vin. battery positiv to +Vin. (left picture).
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#32
(05-08-2019, 05:16 AM)e-sailing Wrote: Negative side should be also connected to ground. Load should be connected between negative side and -Vin. battery positiv to +Vin. (left picture).
You only actually need the neg to ground if you want the measure the voltage as well, if you want to do that then load needs to be on the neg side as you say otherwise don't think it matters though I'll check that later to make sure. I prefer using ads1115 for voltage as you can measure differential voltage between to points so no risk of ground loops.

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#33
AliceJ21,

I am attempting to use the same size shunt and an ESP8266, might you share your code?
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#34
I have been monitoring my batteries with an ESP8266 and ADS1115 to MQTT for a while, before I heard of openplotter.
My code is at https://github.com/svkatielee/ESP8266_Ar..._volt_mon4 if anyone is interested.
--
Larry - s/v Katie Lee Passport 45 Ketch (For Sale) - somewhere in Taiwan
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