Peter Dalmaris / KLP 5e - ESP32 sensor board - History

Swapped pins for CS_SD and MIC_OUT so that the microphone is connected to a usable ADC.

Completed schematic fixes and updates. Continuing with the layout for Prototype #2.

Fixed and improved Schematic design:

* Changed the buttons
* Added a ferrite bead at the output of the charger to cut some possible noise.
* Changed the values of R30, R31 and C19, and i add a 100K trimmer to set the gain from 25x to 125x.
* Added C23, C24 and C25 in the photo sensor circuit

Replaced USB C receptacle with a different model. Repositioning components to better align with manufacturer recommendations.

Completed layout and 3D models, next up is review everything.

Replaced the button, USB, bat connector with new symbols and footprints. Completed draft layout and routing.