Designing a CPU Module

A project log for Street Sense

Portable electronic device to measure air and noise pollution

Mike TeachmanMike Teachman 09/09/2019 at 18:420 Comments

The next transformation from breadboard to PCB is the CPU Module.  If you look at the schematic it might be better called a "connector module" or a "glue module".

This hardware module serves to connect all the peripherals and other hardware modules to the ESP32 microcontroller.  Some connectors terminate at switches and buttons which will be mounted on a user accessible panel.  Other connectors terminate at the sensor units:  I2S microphone and the PCBs holding the air quality sensor units.

The PCB construction uses stripboard techniques with KiCad as the layout tool.

Some notable PCB design considerations:


Populated board