Page Contents

Component $/Unit Express Qty Express Subtotal XL Qty XL Subtotal MAX Qty MAX Subtotal
Electronics Box $50.00 1 $50.00 1 $30.00 1 $30.00
Power Supply $60.00 1 $60.00 1 $30.00 1 $30.00
Power Supply Cable $20.00 to $70.00 1 $20.00 1 $30.00 1 $70.00
Raspberry Pi Zero W $15.00 1 $15.00 1 $15.00 1 $15.00
MicroSD Card $15.00 1 $15.00 1 $15.00 1 $15.00
E-Stop Button $7.00 1 $7.00 1 $7.00 1 $7.00
Farmduino Express $75.00 1 $75.00 1 $75.00 1 $75.00
NEMA 17 Stepper Motors $20.00 4 $80.00 4 $80.00 4 $80.00
Motor Cables $15.00 to $32.00 4 $80.00 4 $95.00 4 $95.00
X-Axis Cable Carrier $40.00 to $200.00 1 $40.00 1 $70.00 1 $200.00
Y-Axis Cable Carrier $30.00 to $50.00 1 $30.00 1 $50.00 1 $50.00
Z-Axis Cable Carriers $20.00 1 $20.00 1 $20.00 1 $20.00
Solenoid Valve $8.00 1 $8.00 1 $8.00 1 $8.00
Solenoid Valve Cable $10.00 1 $10.00 1 $10.00 1 $10.00
Vacuum Pump $15.00 1 $15.00 1 $15.00 1 $15.00
Vacuum Pump Cable $15.00 to $20.00 1 $15.00 1 $20.00 1 $20.00
Camera $30.00 1 $30.00 1 $30.00 1 $30.00
Camera Cable $15.00 to $20.00 1 $15.00 1 $20.00 1 $20.00
Camera Calibration Card $1.00 1 $1.00 1 $1.00 1 $1.00
LED Strip $20.00 to $40.00 1 $20.00 1 $40.00 1 $40.00
Power Cord Protector $7.00 1 $7.00 1 $7.00 1 $7.00
TOTALS   28 $623.00 28 $728.00 28 $898.00

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 - UV Stabilized ABS
Lid - UV Stabilized ABS
Latches - UV Stabilized ABS
Gasket - Rubber
Supergland - Rubber
Screws and Nuts - Stainless Steel
Rainproof? Yes
Colors Box - White
Lid - Frosted Clear
Latches - Black
Gasket - Black
Supergland - Black
Cover Type Hinged with latches
Hinge Type M3 x 35mm screws with locknuts
Price $50.00
Quantity 1

electronics box

Power Supply

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

Output Power 24 volts DC, 6.25 amps max (150 watts)
Output Cable Two 4m long 2-core 16 AWG black cables with 4-pin plug for Farmduino Express
Input Power 110 volts AC with a max current draw of 1.36 amps (150 watts)

or

220 volt AC with a max current draw of 0.68 amps (150 watts)
Input Cable 0.3m long black cable with standard US 3-prong plug
Waterproof Rating IP67
Brand Weho
Price $60.00
Quantity 1

Power Supply Cable

This modular 2-wire cable connects the power supply to the Farmduino Express. It features a waterproof 2-pin connector to attach to the power supply, and a red molex connector to attach to the Farmduino Express.

Number of Cores 2
Outer Color Black
Connector 1 Waterproof 2-pin screw-type connector
Connector 2 Molex Part Number 151049-2209
Length Express: 3m
Express XL: 4.5m
Express MAX: 10.5m
Quantity 1
Price 3m: $20.00
4.5m: $30.00
10.5m: $70.00

Raspberry Pi Zero W

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 Express over a serial connection.

CPU 1Ghz single core processor
RAM 512MB
WiFi 2.4GHz 802.11n wireless
USB 1x micro USB port
Storage MicroSD
GPIO 40-pin header
Price $15.00
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

microSD card

E-Stop Button

This waterproof E-Stop button comes pre-mounted on the top of the electronics box along with a wiring harness pre-connected to the Farmduino Express board.

Color Red
Waterproof? Yes
Wiring? Included
Price $7.00
Quantity 1

electronics box

Farmduino Express

The Farmduino Express board receives G-code commands from the Raspberry Pi and then moves the motors, reads sensors, activate peripherals, and more.

Farmduino Express is open-source

Click here to download the Farmduino Express schematic, board layout, and source files.

The source code for the main Arduino MCU firmware is available here.

Microcontrollers ATmega2560
Input Voltage 24V
Power Connector Molex Part Number 151048-1209
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 $75.00
Quantity 1

Farmduino Express

NEMA 17 Stepper Motors

These powerful 200 resolution stepper motors allow FarmBot to move precisely in the X, Y, and Z directions. Download the motor 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)
Price $20.00
Quantity 4

Motor

Motor Cables

These 4-wire cables connect each NEMA 17 stepper motor to the Farmduino Express. They are labelled on the Farmduino Express end X1, X2, Y, and Z. Furthermore, the Z motor cable is split into two sections with a 90-degree waterproof connector.

Lengths Express
0.6m (X1)
1.8m (X2)
2.2m (Y)
2.1m (Z, Y-Axis Section)
1.8m (Z, Z-Axis Section)

Express XL and MAX
0.6m (X1)
3.0m (X2)
3.4m (Y)
3.3m (Z, Y-Axis Section)
1.8m (Z, Z-Axis Section)
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 Express
X1 - $15.00
X2- $18.00
Y - $20.00
Z - $27.00

Express XL and MAX
X1 - $15.00
X2 - $23.00
Y - $25.00
Z - $32.00

(Z motor cable, Y-axis section)

Z Motor Cable Y section 1

(Z motor cable, Z-axis section)

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 Express
X-Axis - 1.7m (85 links + end pieces)
Y-Axis - 1.4m (70 links + end pieces)
Z-Axis - 0.74m (37 links + end pieces)

Express XL
X-Axis - 3.2m (160 links + end pieces)
Y-Axis - 2.6m (130 links + end pieces)
Z-Axis - 0.74m (37 links + end pieces)

Express MAX
X-Axis - 9.2m (460 links + end pieces)
Y-Axis - 2.6m (130 links + end pieces)
Z-Axis - 0.74m (37 links + end pieces)
Inside Height 15mm
Inside Width 30mm
Outside Height 20mm
Outside Width 38.2mm
Pitch 20mm
Bending Radius 28mm
Price Express
X-Axis - $40.00
Y-Axis - $30.00
Z-Axis - $20.00

Express XL
X-Axis - $70.00
Y-Axis - $50.00
Z-Axis - $20.00

Express MAX
X-Axis - $200.00
Y-Axis - $50.00
Z-Axis - $20.00
Quantity 1 for each axis

15 x 30 cable carrier

Solenoid Valve

This 24V 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 24V
Current Draw 160mA
Power Consumption 3.84 Watts
Price $8.00
Quantity 1

Vacuum Pump

This 24V 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 24V DC
Current Draw 0.5A
Price $15.00
Quantity 1

Vacuum Pump Cable

This cable connects the vacuum pump to the Farmduino.

Length Express
2.1m (Y-axis section)
1.0m (Z-axis section)

Express XL and MAX
3.3m (Y-axis section)
1.0m (Z-axis section)
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 Express - $15.00
Express XL and MAX - $20.00
Quantity 1

Vacuum Pump Cable Y Section

Y-axis section

Vacuum Pump Cable Z Section

Z-axis section

Solenoid Valve Cable

This cable connects the solenoid valve to the Farmduino.

Length 0.6m
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 $10.00
Quantity 1

solenoid valve cable

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 0.5m
Outer Diameter 11mm
Camera Length 38mm
Cable Length 1.0m
Connection 4-pin 90-degree waterproof connector
Price $30.00
Quantity 1

Camera Cable

Lengths Express: 2.1m
Express XL and MAX: 3.3m
End 1 4-pin waterproof 90 degree connector
End 2 Straight microUSB connector
Price 2.1m - $15.00
3.3m - $20.00
Quantity 2.1m - Express: 1
3.3m - Express XL and MAX: 1

Camera Cable

Camera Calibration Card

Use this card to perform an automatic calibration of FarmBot’s camera.

Material Matte cardstock
Thickness 16pt
Printing Front.pdf
Back.pdf
Price $1.00
Quantity 1

camera calibration card

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 Express - 1.2m
Express XL and MAX - 2.4m
Lead Length 1m
Connector Molex Part Number 151049-2206
Price 1.2m - $20.00
2.4m - $40.00
Quantity 1

LED Strip

Power Cord Protector

Color Green
Rainproof? Yes
Submersible? No
Price $7.00
Quantity 1