dpx_biz firmware

flash the base build, or start your own from the template

← back to interactive map
dpx_biz PCB
hover the steps below to see the buttons

enter_bootloader

  1. Hold the RESET button (top-right, near the USB port)
  2. While holding RESET, press and release the BOOT button
  3. Release RESET
  4. The card appears as a RPI-RP2 USB drive on your computer
⚠ desktop or laptop only. this needs a real computer, phones/tablets don't support flashing new firmware.

flash_the_base_firmware

  1. Download the current firmware: dpx_biz_frm_v0d5d7.uf2
  2. With the card in bootloader mode (see above), drag the .uf2 file onto the RPI-RP2 drive
  3. The card reboots automatically once the copy finishes. you're done
this is the default/base firmware. same one this whole reference site documents (d3 designer key mappings, MIDI notes, config.txt system). Reflashing it is mainly for recovering a bricked card or resetting to a known-good build.

build_your_own

Want to go beyond what config.txt can do. different sensing behavior, new modes, a totally different project on the same hardware? Start from the firmware template instead of this card's default build.

dpx_biz_qwikstrt. live template site
walkthrough for starting your own firmware from scratch
→
dpx_biz_qwikstrt. repo
clone it, open in PlatformIO, start building
→

once you've got the template open, building for the card is:

pio run -e pico

output lands at .pio/build/pico/firmware.uf2. drag that to RPI-RP2 the same way as above.