A raspberry pi/ESP32 project involving musical beat detection and stepper motors
I used the 38-pin ESP32 development boards available from A-Z Delivery https://az-delivery.com/products/esp32-developmentboard or Amazon https://www.amazon.com/AZDelivery-Nodemcu-CP2102-Module-Development/dp/B07H3TTCCW/
This is the TMC2130 chip made by Trinamic. Info at https://www.trinamic.com/support/eval-kits/details/silentstepstick/. Note that you need the SPI version of the development board. Non-SPI ones look similar but need a next-to-impossible modification to enable SPI.
Frizting file is included. Parts list:
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R1: 510 ohm
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R2: 39 ohm 1W
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C5: 1uf 25V
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C6: 10uF 25V
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C7: 10uF 25V
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C8: 100nF
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C9: 1uF
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D2: 1N5817
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TMC2130 Silent Stepstick dev board
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IRLB8721 N-Channel MOSFET
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VS1838B IR Receiver