appiah4 wrote on 2024-05-28, 12:56:
Hey @polp, will there ever be a v1.x revision that lets you use USB peripherals without needing external power? I have the parts to build a second 1.x and I am holding off just in case this is a possibility..
The v1.2 hardware (Github link) includes "Jumper to apply power to micro USB-B connector on Pico to allow USB HID devices to be used". I believe this does what you are asking, though I am not certain as I have not tried it myself.
Be aware there are some slight BOM changes between 1.1 and 1.2 hardware. The following was my working list of changes, from when I did my own orders, but do double-check for yourself, as it's annoying to have to do yet-another Mouser order just for the 1 thing I forgot! 😀
Extra things I needed to buy, going from v1.1 to v1.2 =
* C1 and C2 are now surface mount
* R1, R2, R3, R4 are changed
* R5, R6 are added
* New chip U10 is added, a SOT-6
* Optional : A cheaper U2, and a slightly improved U5 (though the v1.1 components may still be used here)
* Optional : Either use the pre-built DAC boards, as per v1.1, or add additional components (and different back plate, re: hole location) to do chipdown DAC
Supporter of PicoGUS, PicoMEM, mt32-pi, WavetablePi, Throttle Blaster, Voltage Blaster, GBS-Control, GP2040-CE, RetroNAS.