Solutions

Self-check

Questions

• Answer: 3.3 V
• Answer: It is closer to 2.65 V because the transistors inside the microcontroller create some internal resistance causing a voltage drop under load.
• Answer: “floating” the lead
• Answer:  There is an increase in voltage.

Exercises

• Answer: from multimeter import*
• Answer: voltage
• Answer: Pin 13 is set to both high and low through pin13.write_digital() with each followed by a measurement call.
   

Project

Solution: Make sure to change the pin in the script to 14. The reading should be approximately 2.95 V.