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Zanduino / INA

Combined Arduino library for reading multiple INA2xx power monitor devices
GNU General Public License v3.0
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INA3221 is supported, how to configure? #73

Closed rin67630 closed 3 years ago

rin67630 commented 3 years ago

Hi Zanshin, let me first apologize for not having confirmed the previous issue about the INA226. Yes, i did understand now how it works.

My next question arises: I have ordered some INA3221 that you are supporting. I just wonder how to configure the channel. That way? ina1_shunt1 = INA.getShuntMicroVolts(0,0); ina1_shunt2 = INA.getShuntMicroVolts(0,1); ina1_shunt3 = INA.getShuntMicroVolts(0,2); ina2_shunt1 = INA.getShuntMicroVolts(1,0); Thank you for clarifying

rin67630 commented 3 years ago

I have seen that #andybarrow asked the same question: "How does one differentiate between the three channels of the INA3221?" but I did not find the answer in the dialog following.

SV-Zanshin commented 3 years ago

The INA3221 shows up as 3 distinct devices. The "getShuntMicrovolts()" function only takes one parameter, so you would call it as

   uint16_t in3211_1 = INA.getShuntMicroVolts(0);  
   uint16_t in3211_2 = INA.getShuntMicroVolts(1);  
   uint16_t in3211_2 = INA.getShuntMicroVolts(2);
SV-Zanshin commented 3 years ago

Where die @andybarrow ask the question?

rin67630 commented 3 years ago

Thank you! @andybarrow asked in closed issue #67.

Since you both seem to be interested in building BMS with INA chips, I am working on a networked battery reporting system based on INA chips, ESP8266 and thinger.io as dasboard server. I mainly aim to build a software MPPT around plain buck converters targetting the very low-power domain, but the main code could be used for a BMS of any dimension as well. The main feature is currently to be able to forward the battery information over the network to another ESP, so one could build a BMS for any voltage with an ESP per 12V block, overcoming the 26V limitation of the INA. https://github.com/rin67630/Solar-Booster Stay tuned...

rin67630 commented 3 years ago

here an example of my solar-booster dashboard: grafik

SV-Zanshin commented 3 years ago

Very nice!

My battery bank is 24V which means it can hit 28.8V while charging so the standard breakout boards for the INA219 won't work for me. I want to monitor my solar panels separately, so the INA3221 is perfect for me so that I can save on components.

rin67630 commented 3 years ago

INA226s could do (36V), but are limited to 24V nominal.

I suggest to use a network of several ESP8266s (one for each block of 12V + one to centralize the values) equiped with INA3221 to monitor each cell, to make a scalable solution, open ended to every voltage. You have more devices (an ESP8266 costs nothing), but far less cables.