Using the attiny13a to measure current
This Was just a random project idea, the current measuring is not that precise ~(0.3ma) from my tests.
Its also not intended for larger currents or voltages, it measures with the vcc voltage of the micro so you cant go past 5.5V
The tiny runs at 9.6mhz
It measures the vcc voltage it receives by itself during startup and then starts measuring current based on that and the
voltage drop of the shunt resistor
PB4 as INPUT, has to be 1/10th of VCC this can be done via a voltage Divider
PB2 as INPUT, has to be connected via a shunt Resistor to VCC (This also determines SHUNT value)
PB1, PB3, PB0 Are Free to use (In this example used for a 4 Digit Display via I2C)
I quickly sketches how my circuit for this example code looks :
Picture that shows the result of the Example code
