Potato Plant(er)

Monitor and control Harriston n-row potato planter from a Raspberry Pi.

https://www.harriston-mayo.com/harriston/equipment-type/potato-planting/

Hardware

• Raspberry Pi 3
• Official Pi screen
• Adafruit DC motor hat
• Taiss 100 step encoder
• Baomain limit switches in hopper sensors
• Baomain limit switch for lift sensor
• 12v relays
• 12v couplers

Software

• Tokio
• Rppal gpio
• Iced GUI

Physical IO

Inputs and outputs can be classified as being planter wide (one per planter) or per-row.

Planter Inputs

• Planter raised/lowered sensor
• Pick wheel drive shaft sensor
• GPS speed

Planter Outputs

• Pick wheel flow servo

Row Inputs

• Hopper fill sensor
• Seed sensor eye

Row Outputs

• Seed belt control

Status

1. • Seed belt control
2. • Pick wheel flow control
3. • Pick wheel speed sensor
4. • Planter raised sensor
5. • GPS speed sensor
6. • Hopper fill sensor
7. • Seed sensor (eye)
8. • Row context tracking based on planter raised sensor
9. • J1939 speed sensor
10. • Auto seed wheel speed control
11. • Seed placement metrics based on seed sensor

Replaced the previous Dickey John monitor and planted 65k row feet with the cli app.

GUI app in progress:

Required for building

• libfontconfig-dev
• libudev-dev

Build

export PKG_CONFIG_ALLOW_CROSS=1
rustup target add armv7-unknown-linux-gnueabihf
apt install gcc-arm-linux-gnueabihf
cargo build --target=armv7-unknown-linux-gnueabihf