Sail-by-wire

aim

retrofit engine (propulsion), gearbox (gear) and steering (rudder) with controller based on Sean's work https://pypilot.org/schematics/

hardware

• ESP32 fully featured Microcontroller (< EUR 10,-)
• IBT-2 BTS7960 based Double-H-Bridge (< EUR 10,-)
• sensors:
  • linear pot
    • 10k Ohm as suggested by Sean
    • off-the-shelf rudder angle sensor 0-190 Ohm
  • end switches
  • current sense:
    • BTS7960 feature
  • over temprature:
    • BTS7960 feature
• power-drive:
  • windshield wiper motor
  • hydraulic pump
  • ...

commercial products

• ZF Pod Drives
  • DeviceNet ?
• Volvo† IPS und Volvo Aquamatic
  • J1939 ?
• Teleflex Optimus 360 Systems
  • DeviceNet ?
• Yanmar VC10 und JC10 (Joystick) Control Systeme)
  • DebiceNet ?

toDo

• explore communication protocols

communication

conceptual

remote control

• autopilot
  • pyPilot
  • Raymarine EV-2 https://www.raymarine.de/view/index-id=7686.html
  • Garmin Steer-by-wire
• remote controller

physical

• wifi
• ethernet
• can-bus
  • nmea2000
  • ...
• serial
  • Sean's pyPilot
• bluetooth
• infrared
• radio 10kHz

protocol

[...] = porposed feature

signalK

• rudder
  • control
    • /vessels/<RegExp>/steering/rudderAngleTarget
  • feedback
    • /vessels/<RegExp>/steering/rudderAngle
• gear
  • control
    • /vessels/<RegExp>/propulsion/<RegExp>/transmission/gear[Target]
  • feedback
    • /vessels/<RegExp>/propulsion/<RegExp>/transmission/gear
• propulsion
  • control
    • /vessels/<RegExp>/propulsion/<RegExp>/revolutions[Target]
    • /vessels/<RegExp>/propulsion/<RegExp>/engineLoad[Target]
  • feedback
    • /vessels/<RegExp>/propulsion/<RegExp>/revolutions
    • /vessels/<RegExp>/propulsion/<RegExp>/engineLoad

nmea2000

• rudder
  • control
    • pgn 127237 Heading/Track Control
  • feedback
    • ...
• gear
  • control
    • NONE
  • feedback
    • ...
• propulsion
  • control
    • NONE
  • feedback
    • ...

Sean's serial

• rudder
  • control
  • feedback