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

Swapped pins for CS_SD and MIC_OUT so that the mic...

by Peter Dalmaris 5 months 1 week

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

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1cee7000

Completed schematic fixes and updates. Continuing ...

by Peter Dalmaris 5 months 1 week

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

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3f0d7f27

Fixed and improved Schematic design:

by Peter Dalmaris 5 months 1 week

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

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c611540d

Optimisation complete.

by Peter Dalmaris 7 months 2 weeks

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fd0d39c0

Work in progress, new layout and routing.

by Peter Dalmaris 7 months 2 weeks

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ea169b5c

Replaced USB C receptacle with a different model. ...

by Peter Dalmaris 7 months 2 weeks

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

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fbf1b47b

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

by Peter Dalmaris 7 months 3 weeks

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

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7ebe0947

Layout in progress.

by Peter Dalmaris 7 months 3 weeks

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b3ac6ae5

Replaced tantalum capacitors and LEDs.

by Peter Dalmaris 7 months 3 weeks

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6682f76c

Replaced the button, USB, bat connector with new s...

by Peter Dalmaris 7 months 3 weeks

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

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c21c0db0