pibot_cnc_laser_series:v496_pro:connect_io_expander:start
HARDWARE CONNECTION · VERSION SELECTOR
4.5 Connect I/O Expander
Choose the manual that matches the version printed on your PiBot expander PCB. The V5 and V4/V4.1 electrical layouts are different.
PiBot V4.96 ProUse the supplied 4.x adapter · UART2 TX GPIO.27 / RX GPIO.25 · disable OLED
Check the expander PCB version before wiring. Do not apply V4/V4.1 input or RX/TX instructions to V5 hardware, and always power off before inserting RJ12 cables or moving jumpers.
CURRENT MODEL · RECOMMENDED
PiBot I/O Expander V5
Use this manual for the current V5 board with eight optocoupler inputs, six buffered 5 V outputs, two PhotoMOS relays, two External-V MOSFET outputs and two RX/TX jumper groups.
- Detailed PinMap callouts 1–11
- Controller-specific UART YAML
- M7/M8/M9 output test
- Firmware, Pendant and troubleshooting
LEGACY HARDWARE
PiBot I/O Expander V4 / V4.1
Use this preserved manual only when the expander PCB is marked V4 or V4.1. It retains the older mixed input circuits, four 5 V outputs, original firmware procedure and legacy wiring examples.
- Original V4/V4.1 PinMap
- Legacy input-circuit notes
- Firmware upload procedure
- Original output test and troubleshooting
Choose the correct page
PCB says V5Use the green current-model card and follow its model-specific controller row.
PCB says V4 or V4.1Use the gray legacy card. Do not copy V5 SW_VCC or dual-jumper instructions.
Version cannot be readKeep power off and compare the board against the PinMap/product photos before connecting it.
pibot_cnc_laser_series/v496_pro/connect_io_expander/start.txt · Last modified: by 127.0.0.1