Voltmeter Script

• Download measure_volts_with_cyberscope.hex: right-click and select Save link as...

measure_volts_with_cyberscope.hex

• Open it with your programming software. Note that python.microbit.org/v/2 is used in this tutorial's screencaptures.
• Click Connect, then Flash.  
• After the script is done loading into the micro:bit, click Disconnect.

Voltmeter Tests

• In the CYBERscope, click Connect.
• Use your probes to take the measurements shown in the animation.  The measurements are also listed step-by-step below the animation.

In these tests, you will measure voltages across the LED circuit’s components and compare them to the voltage across the +/- supply rails.

• Use the animation and the instructions below it to measure voltage across the supply rails, then the resistor, then the LED.
• Optionally, view the full-size kvl-measurements.mp4 clip to play and pause it between steps.

• Check the voltage when the two probes are connected to the same row.  It should be very close to 0.00 V.
• Measure the voltage across the (+) and (-) supply rails.
• Measure the voltage across the resistor.
• Measure the voltage across the LED.
• Add the resistor and LED voltage measurements.
• Compare it to the voltage across the (+) and (-) supply rails.