Bill of Materials
This project has been divided into multiple subsystems; frame, propulsion system, control system, power system.
Frame
Description
|
Count
|
187 mm Aluminium Extrusion
|
4
|
213 mm Aluminium Extrusion
|
8
|
Aluminium Corner Joints
|
8
|
5 mm Hex Screws
|
64
|
Axle Assembly
Description
|
Count
|
10 mm Axle (87.5mm Long(
|
4
|
Bearing Carrier
|
4
|
10 mm Shaft Collar
|
8
|
72-Tooth Gear
|
4
|
Wheel
|
4
|
Tires
|
4
|
35mm 3mm Hex Bolts
|
20
|
3mm hex nuts
|
20
|
Bearings
|
8
|
Drivetrain
Description
|
Count
|
Axle-Assmebly
|
4
|
Assembled Frame
|
1
|
5mm hex cap bolts (20mm long)
|
4
|
5mm hex cap bolts (10mm long)
|
4
|
Roller Chain (ISO Number 05B, 8 mm Pitch)
|
3 ft
|
9-tooth gear
|
2
|
3mm Hex Bolts (15mm long)
|
2
|
3mm hex nuts
|
2
|
Wire Guidance Materials
Description
|
Count
|
Generator PCB
|
1
|
Sensor PCB
|
1
|
ADS1115 ADC
|
1
|
3.3 kΩ Resistor
|
1
|
12 kΩ Resistor
|
1
|
47 Ω Resistor
|
1
|
10 kΩ Resistor
|
4
|
1 MΩ Resistor
|
4
|
4.7 kΩ Potentiometer
|
1
|
12 kΩ Resistor
|
1
|
100 nF Capacitor
|
2
|
1.2 nF Capacitor
|
1
|
1 uF Capacitor
|
1
|
22 nF Capacitor
|
2
|
1 mH Inductor
|
2
|
LM324N Amplifier
|
1
|
NE555 Timer
|
1
|
2.1x5.5mm barrel connector
|
1
|
2 positions terminal connector
|
3
|
3 positions right angle pin header
|
2
|
~1 meter 20AWG cable (for the inductors)
|
1
|
~100' 22 gauge multi-strand wire (for the following wire)
|
1
|
Soil Mechanism Materials
Description
|
Count
|
M3 Heat Insert
|
3
|
3030 L-bracket
|
1
|
M6x15mm
|
1
|
M4 3030 T-nut
|
1
|
M4x16mm
|
1
|
NEMA11 Motor
|
1
|
M2.5x6mm
|
4
|
M3 Hex Nut
|
3
|
M3x5mm Set Screw
|
1
|
M3x10mm
|
2
|
M2.5x10mm
|
4
|
M2.5 Hex Nut
|
4
|
Stemma Soil Sensor
|
1
|
M3x12mm
|
2
|
M3x16mm
|
1
|
Main Board
Description
|
Count
|
Raspberry Pi 4
|
1
|
O-Drive Control Board
|
1
|
50W Power Resistor
|
1
|
6s LiPo 22.2V Battery
|
1
|
Voltage Sensor
|
1
|
5V Regulator
|
1
|
Analog to Digital Converter
|
1
|
Large Power Rail (for 24V)
|
1
|
Small Power Rail (for 5V/GND)
|
2
|
Automotive Relay
|
1
|
Relay Holder
|
1
|
M2.5x10 Screws
|
14
|
M3 Nylon Standoffs
|
4
|
M4x10 Screws
|
2
|
M5x10 Screws
|
2
|
3D Printed Parts
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