Electronics design

• use the test equipment in your lab to observe the operation of a microcontroller circuit board

• send a PCB out to a board house

Here we have designed a printed circuit for the microcontroller Xiao rp2040

as a lab-measuring device, we have :

Voltage VCC to GND

We’ve connected the board to the pc via USBC cable. We measured the voltage between the VCC pin and the GND pin. The digital multimeter indicates 5.17 V which corresponds to the USB port voltage.

Voltage 3.3v to GND

We then measured the voltage between pin 3.3v and pin GND. The digital multimeter indicates a value that tends towards the value indicated on the Xiao pin.

Digital signal probing

For probing the digital signal we used an oscilloscope as shown below. we’re going to measure the output signal of an Hc-SR05

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