Main Board Rev 0 - Githubissues

jkominek / piano-conversion

Hardware, and some firmware, for acoustic piano to MIDI controller conversion.

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Main Board Rev 0 #9

Closed jkominek closed 3 years ago

jkominek commented 3 years ago

Subtasks:

[x] Triple check the high-side power control of ADC boards.
[x] Include a SPI memory part, EEPROM or FLASH, or something. Find a common footprint, we can worry about what size memory (or even if we'll use it) later.
[x] Double check the UART pin assignments, make sure we don't have an RS485 transceiver hooked up to something that isn't a UART.
[x] Final symbol/footprint/layout check. Don't forget ERC/DRC.

jkominek commented 3 years ago

63abe29 Fixes a UART pin error, and an I2C pin error. Sigh.

jkominek commented 3 years ago

0f9a079 includes an SPI flash using a common footprint for a SPI memory.

jkominek commented 3 years ago

5072ae0 Must've been in a hurry when I did the power control. Had the p-channel FETs backwards. And an extra resistor on each one that I can't, for the life of me, figure out why I wanted. FETs flipped, resistor removed, and package layout made pleasingly symmetric.

jkominek commented 3 years ago

016cd60 ran ERC/DRC, removed some unused nets and marked the pins NC. (leftovers from when I thought the pedal inputs might come to this board directly.)

jkominek commented 3 years ago

Pretty sure we're all done with this. 3a703c3 moved the ethernet LEDs to a single 2x3 header. A 1x3 is still used for boot selection, but I'd expect most users to jumper that. I'm expecting this will need another rev, so I'll worry about putting in pads to allow it to be set during surface mount assembly in that rev.