simple micropython driver for INA219
ina219 connections:
+3v3<->3v3
gnd<->gnd
scl<->Pin5(D1 on D1 mini, pullup onboard)
sda<->Pin4(D2, pullup onboard)
Vin+<->+5V(USB)
Vin-<->LED+400R
MicroPython v1.9.2-8-gbf8f45cf on 2017-08-23; ESP module with ESP8266
Type "help()" for more information.
>>> import ina219
>>> ina = ina219.INA219()
>>> ina.read()
(4.2, 4864.0)
>>> ina.read()
(4.3, 4864.0)
>>> ina.read()
(4.3, 4868.0)