iot-arduino-ina219-oled1306

• BV : bus voltage
• SV : shunt resistor voltage
• LV : load voltage
• C : current

connections

• arduino can be powered using 9V connected to Vin
• from arduino 3.3v supply power to oled1306 and ina219
• oled sck and ina scl to arduino scl ( A5 )
• oled and ina sda to arduino sda ( A4 )

note

INA219 can read voltage when load circuit ground is common with ina gnd else you'll get almost 0 V value on bus and load voltage.