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Forum Index : Microcontroller and PC projects : Not a backpack - mini-Click
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Mixtel90 Guru  Joined: 05/10/2019 Location: United KingdomPosts: 6792 |
I'm on a roll. This idea only came to mind late yesterday afternoon. How much stuff can you hang on a 'Zero? It has the wrong pins for VGA and there's not much left from a SPI LCD so I left the display off. No expansion port either this time - I used all available pins. The 'Zero has no RUN pin so the RST line is connected to GP29 and held low by R3 during boot. Software sets up GP29, pulls it high then waits for the modules to boot before continuing. There is a reset button onboard as a manual alternative. There is an onboard WS2812 on GP16. Once again, pairs of PWM pins are used for PWM and INT on each Click module. All output 3V3 comes from a 800mA regulator. Power is via USB-C connector on the 'Zero. This is a small board. You can get two out of a 100mm x 100mm piece. 5 pieces gets you 10 boards which you can then daisychain over QWIIC I2C connectors. :)  Mick Zilog Inside! nascom.info for Nascom & Gemini Preliminary MMBasic docs & my PCB designs |
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