This file describes any key changes between hardware revisions.
- Add termination resistors for incoming GPIO signals (#226)
- Fix pull-down resistor strength to hold PWM gate signals low during boot-up (#227)
- Fix footprints (#211)
- Fix part numbers (#189)
- Remove isoSPI (#141)
- Add shared UART and JTAG interface (#158)
- Add more GPIO ports (#140)
- Add mechanical parts to BOM (#115)
- Add website to PCB silkscreen (#173)
- Add reset signal pull-up and ESD protection (#165)
- Add local decoupling to VREF (#171)
- Add local decoupling to 2.048V (#170)
- Add E-STOP logic signal to FPGA (#160)
- Add PTC resettable fuses to PWM outputs (#157)
- Add VDRIVE signal to PS interface (#126)
- Add jumpers for default VDRIVE and ESTOP (#102)
- Add pull-down to VCCIO_EN (#121)
- Change power wiring in schematics (#174)
- Change shield termination to VIN- (#156)
- Change mounting holes to VIN- from GND (#169)
- Change DB15 P/N to include screw posts (#134)
- Change to USB type B recepticle (#101)
- Update top-level block diagram (#164)
- Fix 24V supply to GPIO port (#103)
- Fix power protection circuitry (#163)
- Fix board start-up PWM issues (#137)
- Fix P/N for RC filter caps (#96)
- Fix BOM components for DFM (#159)
- Fix footprints (#95, #128)
- New PCB form factor (6" x 6.75", 6 layers)
- Add power stack supply rail distribution
- Add isoSPI ports
- Add extra encoder port
- Add 0R resistors to subsection power for debugging
- Add 100k resistors across analog inputs
- Add serially addressable RGB LEDs
- Add EEPROM
- Add fiducials to layout
- Remove user button / switch
- Remove discrete RGB LED
- Remove ADC2, now just one ADC
- Remove unity gain op-amp driving ADC inputs
- Reduce bulk input
- Reduce 24V power filter component current ratings
- Reduce 3V3 LDO current rating
- Change level-shifter IC for UART signals
- Change JTAG to NC module
- Change JTAG pin headers to pads
- Change values for inrush limiting circuitry
- Change FPGA driven MOSFETs to lower Vth
- Change FPGA pin-out mapping
- Change power stack connector I/O
- Change encoder input signal chain
- Change Ethernet routing to correct diff. impedance
- Fix footprints
- Add inrush current limiting to 5V5 rail
- Add more silkscreen labels
- Add test points
- Change ADC reference from 2.5V to 2.048V
- Change trim resistors for +/-16V DC/DCs
- Swap UART Tx / Rx pins
- Separate power stack shields between connectors
- Fix footprints
- Add power input protection
- Add test points
- Add TVS to analog inputs
- Change power input DC/DC modules
- Fix BOM with correct part numbers
- Fix footprints
- Initial design