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From Breadboard to Enclosure - Part 3

A project log for Street Sense

Portable electronic device to measure air and noise pollution

Mike TeachmanMike Teachman 06/26/2019 at 19:070 Comments

Continuing with stripboard construction methods, the ozone and NO2 sensor module was built.  This module also contains a LDO voltage regulator, the 24-bit ADC, and a temperature sensor.  The readings from the two sensors will need to be compensated wrt temperature - that is the reason to locate the temperature on this module.   An overview of the modules is described in an earlier project log From Breadboard to Enclosure - Part 1.

This stripboard module can be considered a stepwise improvement.  Compared to the boardboard prototype it should give improved performance for the Spec Sensor modules, but will still be lacking compared to a properly laid out PCB.

The module includes the major components U6, U8, U9, U10, U11 found in the schematic.

The next log will outline the construction of the final module, containing the ESP32 and RTC.

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