An old armchair from the living room upgraded with electric motors.
Now you can relax while taking a tour in the garden.

Specification

• Top-speed: 5 km/h
• Turning radius: 0.25 m
• Weight: 100 kg
• Current Features
  • individual drive of each tire
  • Operate with joystick
  • Operate with Remote control via WiFi
  • Web interface for configuration (e.g. max speed, current limit)
  • Massage function
  • USB Charging Port

• Future Features (WIP)
  • More sensors:
    • Accelerometer
    • Lidar sensor
    • GPS receiver
  • Anti slip regulation
  • Self driving algorithm
  • Individual suspension of the rear tire for better grip
  • Lights

Components

Mechanical

• Used armchair
• 2x hand truck tires
• 2x swivel castors
• chain and sprockets

  Motors

• Power: 350 W each
• Voltage: 24 V
• Type: Brushed DC motor
• Rotating speed: 2500 rpm (without gearbox)
• Attachment: Gearbox 9.8:1

  Battery

• Voltage: 24 V (2x 12 V in series)
• Capacity: 2,4 kWh (2x 12 v 100 Ah)
• Type: Deep cycle AGM

  Control

• Custom pcb with ESP-32 microcontroller
• 2x 100A full bridge motor driver
• 2x analog hall-sensor for current metering

Videos

Garden tour

2022.09.28

Turning radius, Remote control

2022.09.28

Gallery