Page Contents

Qty. Component $/Unit Subtotal
1 Electronics Box $95.00 $95.00
1 Electronics Mounting Plate $15.00 $15.00
1 Power Supply $60.00 $60.00
1 Raspberry Pi 3 $40.00 $40.00
1 MicroSD Card $15.00 $15.00
1 Farmduino $90.00 $90.00
5 Stepper Drivers $6.00 $30.00
1 Raspberry Pi Power Cable $5.00 $5.00
1 Farmduino Data Cable $5.00 $5.00
1 USB Adapter Cable $5.00 $5.00
12 Jumper Wires $0.25 $3.00
4 NEMA 17 Stepper Motors with Rotary Encoders $60.00 $240.00
4 Motor Cables $20.00 $80.00
4 Encoder Cables $25.00 $100.00
2 1.7m Cable Carriers $50.00 $100.00
1 0.74m Cable Carrier $30.00 $30.00
1 Universal Tool Mount Cable $35.00 $35.00
1 Soil Sensor PCB $6.00 $6.00
3 Soil Sensor Jumpers $0.50 $1.50
1 Solenoid Valve $8.00 $8.00
1 Vacuum Pump $15.00 $15.00
1 Vacuum Pump Cable $15.00 $15.00
1 Solenoid Valve Cable $15.00 $15.00
1 Borescope Camera $35.00 $35.00
4 Jumper Links $0.25 $1.00
1 LED Strip $25.00 $25.00
56 TOTALS   $1,069.50

Electronics Box

This rainproof box protects FarmBot’s electronics from rain and debris. It features an easy-to-use tool-less double latch design for quickly opening and closing the box, a rubber gasket to keep moisture out, and a custom gland for all of FarmBot’s cables to be passed through. The lid, latches, and box are made of UV stabilized materials.

Materials Box - Delrin 127 UV (Natural Acetal Homopolymer)
Lid - Makrolon 2407-550115 (Clear PC)
Latches - Lexan 925U-701 (Black PC)
Gasket - Santoprene 111-35 (Black TPV)
Supergland - Santoprene 111-35 (Black TPV)
Screws and Nuts - 18/8 Stainless Steel
Rainproof? Yes
Colors Box - White
Lid - Bluish Clear
Latches - Black
Gasket - Black
Supergland - Black
Outer Dimensions  
Inner Dimensions  
Cover Type Hinged with latches
Hinge Type 18/8 M3 x 35mm screws with locknuts
Price $95.00
Quantity 1

Electronics Mounting Plate

This acrylic plate allows you to mount the v1.3 Farmduino and Raspberry Pi 3 into the v1.3 Electronics Box. Note: the plate comes with a brown protective film which you can peel off to reveal the clear acrylic.

Material Acrylic
Color Clear
Quantity 1
Price $15.00

Power Supply

This universal input IP67 waterproof power supply provides FarmBot with all the electricity it needs.

Output Power 12 volt, 12.5 amp DC split among 2 channels
Output Cable Two 4m long 2-core 16 AWG black cables with one Molex Part Number 39-01-3045 Connector
Input Power 110 or 220 volt AC
Input Cable 0.3m long black cable with standard US 3-prong plug
Waterproof Rating IP67
Brand Weho
Dimensions  
Price $60.00
Quantity 1

Raspberry Pi 3

This is the “host computer” of FarmBot. You might also call it FarmBot’s brain. The Raspberry Pi runs FarmBot OS, communicates with the web application over ethernet or WiFi, and talks to the Farmduino over a USB serial connection.

CPU 1.2Ghz Quad Core Broadcom BCM2837 64-bit ARMv8 processor
RAM 1GB LPDDR2 (900 MHz)
WiFi 2.4GHz 802.11n wireless, BCM43143 chip
Bluetooth Bluetooth 4.1 Classic, Bluetooth low energy (BLE)
Ethernet Built-in 10/100 Ethernet
USB 4x USB 2.0 ports
Storage MicroSD
GPIO 40-pin header
Price $40.00
Quantity 1

MicroSD Card

The microSD card holds FarmBot OS and is inserted into the Raspberry Pi.

Form Factor MicroSD
Capacity 8GB
Brand SanDisk
Price $15.00
Quantity 1

Farmduino

The Farmduino is an electronics board that combines the functionality of an Arduino MEGA 2560 microcontroller and a RAMPS shield. It features a board layout and connectors that are optimized for FarmBot. It receives G-code commands from the Raspberry Pi and then moves the motors, reads sensors, activate peripherals, and more.

Farmduino is open-source

Click here to download the Farmduino schematic, board layout, and source files. Please note: you will need Adobe Acrobat to view the 3D PDF of the board layout.

Microcontroller ATmega2560
Input Voltage 12V
Power Connector Molex Part Number 46207-0004
Peripheral Connectors Molex Part Number 151048-1206
DC Current per I/O Pin 40 mA
DC Current for 3.3V Pin 50 mA
Flash Memory 256 KB (8 KB used by bootloader)
SRAM 8 KB
EEPROM 4 KB
Clock Speed 16 MHz
Price $90.00
Quantity 1

Stepper Drivers

These drivers convert step and direction signals from the microcontroller into powerful electrical pulses sent to the NEMA 17 stepper motors to allow them to move. All of the stepper drivers have been pre-mounted and tested on Farmduino.

Trade Name A4988 Stepper Motor Driver Carrier (Header Pins Soldered)
Microstepping full-step, half-step, 1/4-step, 1/8-step, and 1/16-step
Output Current 1.5 A per phase without a heat sink or forced air flow (rated for up to 2.0 A per coil with sufficient additional cooling)
Protections Over-temperature thermal shutdown, crossover-current protection, and under-voltage lockout, short-to-ground, and shorted-load
Adjustable? Current control lets you set the maximum current output with a potentiometer, which lets you use voltages above your stepper motor’s rated voltage to achieve higher step rates
Connectors 0.1″ male header pins
Price $6.00
Quantity 5 (1 extra)

Raspberry Pi Power Cable

This USB cable provides power to the Raspberry Pi from the Farmduino’s built-in 12v to 5v to USB circuitry.

Connector 1 Right-angle USB 2.0 Type A Male
Connector 2 Right-angle microUSB 2.0 Male
Length 300mm
Color Black
Price $5.00
Quantity 1

Farmduino Data Cable

This USB cable is used as a serial connection between the Raspberry Pi and the Farmduino

Connector 1 Right-angle USB 2.0 Type A Male
Connector 2 Right-angle USB 2.0 Type B Male
Length 150mm
Color Black
Price $5.00
Quantity 1

USB Adapter Cable

Connects the Raspberry Pi to the Borescope Camera.

Connector 1 Right-angle USB 2.0 Type A Male
Connector 2 USB 2.0 Type A Female
Length 100mm
Color Black
Price $5.00
Quantity 1

Jumper Wires

Use these jumper wires to connect the UTM headers on Farmduino to other pins such as I2C, PWM, or more digital or analog I/O.

Length 180mm
Connectors Single 2.54mm pitch female dupont contact with heatshrink
Color Black
Price $0.25
Quantity 12

NEMA 17 Stepper Motors with Rotary Encoders

These powerful 200 resolution stepper motors allow FarmBot to move precisely in the X, Y, and Z directions. Download the motor spec sheet and encoder spec sheet.

Motor Specs
Motor Resolution 200 steps/revolution (1.8 deg/step)
Winding Type Bipolar
Voltage 12V
Current Draw 1.68A max
Shaft Diameter 5mm diameter
Mount Hole Pattern 4x M3 holes, standard NEMA 17 pattern
Motor Connector 6-pin connector (only 4 pins used)
Encoder Connector 8-pin connector
Encoder Resolution 360 lines/revolution
Encoder Output Differential
Price $60.00
Quantity 4

Motor Cables

These 4-wire cables connect each NEMA 17 stepper motor to the Farmduino. They are labelled on the Farmduino end X1, X2, Y, and Z.

Lengths 0.95m (X1)
2.6m (X2)
3.1m (Y)
4.8m (Z)
Cores 4
Gauge 18
Motor Connector 6 pin connector (only 4 pins used)
Farmduino Connector 2.54mm pitch 4 pin dupont connector with locking tab
Outer Color Black
Price 0.95m - $15.00
2.6m - $18.00
3.1m - $20.00
4.8m - $27.00

Encoder Cables

These cables connect the four rotary encoders to the Farmduino. They are labelled on the Farmduino end X1, X2, Y, and Z.

Lengths 0.95m (X1)
2.6m (X2)
3.1m (Y)
4.8m (Z)
Cores 7
Gauge 20
Encoder Connector 8 pin connector
Farmduino Connector 2.54mm pitch 7-pin dupont connector with locking tab
Outer Color Black
Price 0.95m - $20.00
2.6m - $23.00
3.1m - $25.00
4.8m - $32.00

Cable Carrier

These hollow plastic chains are used throughout FarmBot to manage cables and tubing along each of the three axes.

Material Nylon PA66
Lengths X-Axis - 1.7m (85 links + end pieces)
Y-Axis - 1.7m (85 links + end pieces)
Z-Axis - 0.74m (37 links + end pieces)
Inside Height 15mm
Inside Width 40mm
Outside Height 20mm
Outside Width 48.2mm
Pitch 20mm
Bending Radius 28mm
Price X-Axis - $50.00
Y-Axis - $50.00
Z-Axis - $30.00
Quantity 1 for each axis

1.7m Cable Carrier

0.74m Cable Carrier

Universal Tool Mount Cable

This 12-wire cable connects the Farmduino to the UTM. It provides Ground, 5V, digital and analog I/O, and can be configured at the Farmduino to provide I2C, PWM, and more.

Number of Wires 12
Wire Colors All different
Shielded? No
Wire Gauge 20
Length 4m
Outer Diameter 9.5mm
Outer Color Black
Price $35.00
Quantity 1

Soil Sensor PCB

The Soil Moisture Sensor is a simple breakout for measuring the moisture in soil and similar materials. The soil moisture sensor is pretty straight forward to use. The two large exposed pads function as probes for the sensor, together acting as a variable resistor. The more water that is in the soil means the better the conductivity between the pads will be and will result in a lower resistance, and a higher SIG out.

Sensor Type Capacitive
Input Voltage
Input Current
Output Type Analog
Price $6.00
Quantity 1

Soil Sensor Jumpers

These short wires connect the soil sensor PCB to the M3 electronic screws on the soil sensor base.

Length 75mm
Wire Type 20AWG stranded copper
Colors Red, White, Black
End A 5mm of insulation pre-stripped
End B M3 insulated ring terminal
Price $0.50
Quantity Red - 1
White - 1
Black - 1

Solenoid Valve

This 12V valve controls the flow of water from your garden hose to FarmBot’s tubing.

Inlet 3/4” NPT (National Pipe Thread)
Outlet 3/4” NPT (National Pipe Thread)
Operation Normally closed
Working Pressure Range 0.02 to 0.8 Mpa (3 to 116 PSI)
Flow Direction One-way, indicated by an arrow molded into the plastic
Input Voltage 12V
Current Draw 320mA
Power Consumption 3.84 Watts
Price $8.00
Quantity 1

Vacuum Pump

This 12V vacuum pump sucks air through the seeder’s luer lock needle in order to suction-hold a seed on the needle tip during planting.

Input Voltage 12V DC
Current Draw 1A
Price $15.00
Quantity 1

Vacuum Pump Cable

This cable connects the vacuum pump to the Farmduino.

Length 4.3m
Gauge 18 AWG
Wire Type Stranded copper
Number of Wires 2
Rated Voltage 300V
Inner Colors Red and black
Outer Color Black
Connector 1 Molex Part Number 151049-2206
Connector 2 Two 3/16” female shielded quick-connect terminals
Price $15.00
Quantity 1

Solenoid Valve Cable

This cable connects the solenoid valve to the Farmduino.

Length 3m
Gauge 18 AWG
Wire Type Stranded copper
Number of Wires 2
Rated Voltage 300V DC
Inner Colors Red and black
Outer Color Black
Connector 1 Molex Part Number 151049-2206
Connector 2 Two 1/4” female shielded quick-connect terminals
Price $15.00
Quantity 1

Borescope Camera

The camera is mounted on the z-axis and allows FarmBot to take photos of the garden and plants for weed detection and other future use cases such as plant growth tracking.

Resolution 1024 x 768
Waterproof? Yes
Focal Distance 1m
Outer Diameter 9mm
Camera Length 38mm
Cable Length 5m
Connection USB
Price $35.00
Quantity 1

Jumper Links

These connect the Grounded electronic pin to the Digital In pin, allowing FarmBot to detect when a tool has been mounted or dismounted correctly.

Material Aluminum
Thickness 1mm
Hole Sizes M3
Price $0.25
Quantity 4

LED Strip

This LED strip is strung through the gantry’s horizontal cable carrier supports so that you can light up your garden at night to show friends or for easy harvesting. Please note: this is not a “grow light”.

Light Color White 6000K
Strip Length 1.5m
Lead Length 1m
Connector Molex Part Number 151049-2206
Price $25.00
Quantity 1