4.1 Hardware Diagram

This example uses the following hardware configuration to measure the current:

The DAC0 OUT pin of the device (PD6 on AVR EA) must be connected to the ADC0 IN1 pin of the device (PD0 on AVR EA) via resistor R₁
The sensing resistor R_SENSE is connected between the ADC0 inputs IN1 and IN0 (PD0 and PD1 on AVR EA)
The ADC0 AIN0 pin (PD1 on AVR EA) must be connected to ground via resistor R₂

This example uses the following values:

$R_{1} = R_{2} = 100 k Ω$

$R_{S E N S E} = 10 k Ω$

$V_{0} = 1 V$