- 2nd USB out
- CM5 support?
- Input protection
- Bypass USB for MIDI-only controller
- SMD Debug connectors (angled)
- Consistent clearance around mounting holes
- Larger EEPROM
- USB Device in and USB out
- OSHW Symbol
- Silkscreen text for reset/boot switches
- Silkscreen text for MIDI controller inputs
- Git revision is added to schematics and PCB
- Pull-up resistors for I2C bus
- Two more mounting holes (for development)
- 3D model for JST (Stemma)
- One more mounting hole in the center
- User (Test) LED on RP2040
- EEPROM for storing configuration
- Change title to Open Pedalboard Mainboard
- Use "knowout" text style for better visibility of connectors
- Swap power symbol to better reflect the terminal connector
- Replace HiFi Berry by pedalboard-soundcard
- Upgrade to KiCad 8
- use smaller XTAL ABM8-272-T3
- Fiducials and holes from BOM
- Direct USB connection to RP2040
- LEDs are removed (only 5V adapter left) in favour of the pedalboard-display
- Increase min. through hole size to 0.3mm
- Stemma connector for displays
- Switch for boot mode and reset of RP2040
- 2 more LED rings for rotary encoders
- Increase activity LED resistor to reduce brigtness
- Stemma compatibility for LED out
- Smaller JST PH connectors for MIDI IN/OUT
- Fix USB boot mode bug (wrong wiring)
- Fix CM4 Power LED (invert logic)
- Use power supply based on CM4 IO Board V5
- Decrease stencil sizes (10%) for RP2040- and CM4 connector pads
- Increase slot size to (restriction of PCBway)
- Use SMD components for MIDI I/O
- Use SMD actuator buttons
- Use concrete PSU implemented with SMD components.
- Use MOS FET instead of diode for reverse polarity protection.
- Use official solder jumper instead of homegrown PCB fuses.
- Increase size of PCB and use 5V zone around the edges.
- Use Connector_JST (XH) for MIDI and LED Ext.
- Directly interface CM4 (Remove CM4 Nano carrier)
- Replace the Pico by directly use RP2040
- Compatibility with the Hammond Manufacturing 1590DD case.
- Additional analog (EXP 2) input
- Fidcuials for PnP
- Alternative screw terminal for power input
- Pedalboard LED Ring added.
- Use of SMD Spacers under the foot buttons for improved mechanical stability.
- The power supply for LEDs from 3.3V to 5V. Allows the use of much larger LED matrices.
- Therefore, a level shifter from 3.3V to 5V had to be added.
- Silkscreen information for connectors to avoid having to refer to the schematics
- Reverse power protection circuit added to Power input.
- Power Raspberry Pico from 5V power supply
- Add internal MIDI connection to free up USB.
- BOM: Change LEDs which support 3.3V
- Swap SW A with SW D to cleanup connections
- Fix the USB connection between Raspberry Pi and Pico
First manufactured version