module CJMCU - 219 INA219 I2C

[espruino-discuss3]

Posted at 2017-01-26 by Mark

There is a module: http://www.ti.com/lit/ds/symlink/ina219.pdf
CJMCU - 219 INA219 I2C interface Bi-directional current/power monitoring sensor module.
Please tell me, how can I connect it?
Is there a JS for it?

[gfwilliams]

Posted at 2017-01-26 by @gfwilliams

I don't believe there is a library for that but it's unlikely to be too hard for you to make one - it's usually just a matter of doing what the datasheet says.

If you post up here with any questions we can try and help you out.

[espruino-discuss3]

Posted at 2017-01-26 by ClearMemory041063

A Google search produces at least one path for a driver in C.
A bit of translation would produce the code that you need. ( a week to a month estimate)
https://github.com/adafruit/Adafruit_INA219

This link is a good discussion of the chip
http://cdwilson.us/articles/understanding-the-INA219/

A NODEjs version of the code
https://github.com/brettmarl/node-ina219
and another
https://libraries.io/npm/ina219

Have fun sorting it all out.

[espruino-discuss3]

Posted at 2017-01-26 by ClearMemory041063

Attached is a start on the translation of the Adafruit C code.
Since I don't have the chip it is untested.
It should give you an idea of what is involved.

Attachments:

• INA219.js

[espruino-discuss3]

Posted at 2017-05-26 by Mark

Hello! I'm doing an I2C project for ESP826612F 1V91
Should the function work: find?
function dthread(){
var i2c = new I2C();
i2c.setup({scl:D4, sda:D2});
var p=i2c.find(D2);
console.log(p);}

---

Attachments:

• Буфер обмена02.jpg

[espruino-discuss3]

Posted at 2017-05-26 by Mark

Result

Attachments:

• Буфер обмена01.jpg

[gfwilliams]

Posted at 2017-05-26 by @gfwilliams

Nope - I2c.find isn't a built-in method. The reference lists what's available here: http://www.espruino.com/Reference#I2C

If you have other questions related to ESP8266 please can you post them on the ESP8266 forum though? This post originally doesn't have much to do with your question at all, apart from having I2C in the title.