*** Please note that colors may vary depending on your monitor! ***
Intelligent lawn mowing in lanes and without having to lay a wire.
With the ArduMower Model 2021, it becomes possible. The choice is yours: classic lawn mowing with a wire in the lawn or wireless mowing via GPS RTK. Accurate to the centimeter with a map via app (video).
With the 2021 version of Ardumower, things get colorful. Thanks to the new aluminum composite material, many color combinations are now available. A nice side effect of the new material: The ArduMower has become a good 2 kg lighter. This reduces energy consumption and makes handling easier. In addition, from this version onwards there is a standard front bumper that reports obstacles via two spring contacts.
About the ArduMower project
One drive of the project is to use technological possibilities, which normal lawn robots from the trade do not (yet) use. With which mower in 2020, for example, could you mow with centimeter precision without needing a perimeter wire? A second important driver is sustainability. Many ArduMower users previously had a "normal" lawn robot until it broke down. The hardship comes with the repair costs. These quickly amount to several 100€. Instead of repairing often new is bought, instead of the exchange of a 3 ct resistor a complete mainboard is exchanged.
It goes also differently. Open circuit diagrams and a large community that helps to find errors quickly and to keep costs low.
Building an artwork from scratch is a very simple task.
Building an ArduMower is challenging. It is important that you read this description completely.
We want satisfied customers who üre properly informed about the scope of work, the status of the project, the advantages and disadvantages, and the safety instructions. If you have any questions about the project, technology or anything else, please use the Forum. Then the questions and answers will be available to everyone.
- There are circumstances with GPS reception that can hinder stable use. If too many trees and houses obscure the sky, experience has shown that reliable deployment is limited. Please inform yourself HERE IN THE FORUM before buying how the chances are. We can not guarantee that it works for your environment.
- Robot lawnmower (regardless of manufacturer) should not be operated without supervision. There is a risk of injury to people (especially small children) and animals. Before working on the robotic lawnmower, the device must be disconnected from the power supply.
- The chassis (hausing) are milled from a composite material (aluminum / plastic). A full deburring would make the chassis significantly expensive,. Therefore, we leave this work to the customer. There is a risk of cutting yourself on it. Please take appropriate care when working and wear suitable protective clothing, such as gloves.
Further below you will find strongly summarized the most important information about the options of this kit.
Please use the following options for further (and much more comprehensive) information:
How to build a motherboard (PCB 1.4): PDF
Guide to chassis assembly in our four-part video series: YouTube Channel
Sunray App / Arduino or M4 / GPS-RTK System: in the WIKI and in the YouTube Channel
Battery (not included in the set)
For questions about batteries, we have found a competent partner who specializes in battery issues.
More information about the ArduMower Power Packs can be found HERE.
Which GPS option?
Want to avoid laying a loop wire in the ground and take advantage of the benefits of GPS navigation via GPS RTK (Real Time Kinematics)? The principle of GPS RTK is based on two receiver units. One on the mower (called rover) and a second stationary unit (called base). You need the Rover unit in any case. For the Base unit, you have several options, and in this kit we offer the two most reliable (from our experience).
-
NTRIP (Networked Transport of RTCM via Internet Protocol): here you do not need your own base and use öpublic correction data, e.g. from the satellite positioning service SAPOS. This service requires registration with the provider and is free of charge or subject to a fee in Germany, depending on the federal state. With this solution you need a stable internet connection and a good WLAN coverage in the whole garden area, so that the user can receive the current correction data at any place in the garden. The quality of the correction data depends on many factors, including the weather and the distance of the base Station.
-
Own Base with Long Range Radio System: Here you build your own base station in a location with an unobstructed view of the sky (ideally on the roof of your house). Communication between rover and base takes place over a 868 MHz radio system. WLAN coverage in the garden is not necessary. This solution achieved the highest accuracy at the most of our customers.
Für further information, please use the above sources of Information.
Which board to select?
For the central processing unit, you have a choice between the DUE R3 development board and the Adafruit Grand Central M4. Although the M4 is slightly more powerful than the DUE, you will hardly notice this in practice. An important difference is that the M4 has more memory for very large cards and already has a micro SD card reader integrated. The SD card (not included) stores the current memory card and the current memory progress, so that this information is also available after restarting the device. With the DUE, the card reader must be connected manually and is included in the scope of delivery when the DUE is selected.
Only the DUE works with the loop transmitter version.
Brushless motors or not?
The brushless motors are more energy efficient and generally have a longer life than the classic DC motors with carbon brushes. The cost of brushless motors is somewhat higher due to the more complex control system, and the assembly also requires a little more effort.
Recommended tools (minimal equipment, not included)
- Cordless screwdriver
- Metal drill set
- Sandpaper / sanding sponge
- File
- Cutter knife
- Inbus set
- Torx set
- Screwdriver set
- solder piston + accessories
- Side cutter
- Tip pliers
- Small cable ties
- Shrink tubing set
- 2-component adhesive
- Hot glue
Recommendation for XH sockets on PCB 1.4
(currently included are 3x 2 pin, 9x 3 pin, 4x 4 pin, 4x 5 pin and 2x 6 pin)
- 2x 2 Pin Button
- 2x 3 Pin Odometry L/R
- 2x 3 Pin perimeter L/R
- 1x 3 Pin MowRPM
- 1x 3 Pin rain sensor (optional)
- 3x 4 Pin Sonar L/M/R
- 1x 4 Pin Bumper
- 1x 4 Pin RC Remote (optional)
- 1x 5 Pin GPS
- 1x 5 Pin Temperature Sensor HTU21
- 1x 5 Pin IMU
- 1x 6 Pin WLAN
Scope of supply in complete set
Due to the continuous development of the Ardumower, the scope of delivery of this offer will also be dynamically adjusted. The following listing is valid from 04.07.2021.
You have since the chassis version 2021 very many combination möglichkeiten. The standard lid is 6 mm thick and white; matte with the ArduMower lettering. If you choose another lid color, you will get the 6 mm lid without lettering and an additional lid in 3 mm thickness in your desired color with lettering. We recommend that you glue the two lid halves at the edges (and some points in between) with a 2-component adhesive. We also recommend gluing the reinforcing plates of the drive motors. The wheels are black made of 8 mm thick PE-HD in black.
More on this in our video tutorial series on the Chassis.
Plate material für the chassis
- 1x lid 6 mm white; matt
- 1x lid 3 mm (optional)
- 1x front panel 3 mm with six holes for the ultrasonic sensors
- 1x Rück wall 3 mm
- 1x partition 3 mm with four holes for cable feed-through (color according to stock, as not visible)
- 1x Bumper 8 mm (PE-HD) black
- 1x Bumper 3 mm
- 1x Floor 3 mm
- 1x front underride protection 3 mm
- 1x rear underride protection 3 mm
- 2x side panel 3 mm
- 2x side panel reinforcement 3 mm (color according to stock, as not visible)
- 1x Mähscheibe 3 mm
- 2x Räder 8 mm (PE-HD) black
- 2x hubcaps 3 mm (optional)
Accessories to the chassis
- 1x support wheel + bolt + 3 nuts + 2 washers
- 4x rubber bumpers + 4 screws
- 1x motor mount + bolt + 2 nuts
- 1x Gasket between base plate/mowing-motor
- 3x clamping elements für the output of the motors
- 5x aluminum profiles with threads on the front side
- 20x sliding blocks + screws
- 4x screws für bumper connection + 4 lock nuts
- 2x bolts for bumper assembly + 4 lock nuts + 4 washers + 2 spacers
- 4x screws for button mounting + nuts
- 6x screws for profile thread
- 3x knife + 3 screws + 3 threaded sockets
- 12x screws for wheels on clamping elements
- 12x bolts für connection of wheel and hubcap + nuts (optional)
- 8x screws für motors on sidewalls
- 1x installation adapter für brushless motor (optional with brushless option)
Electronics
- 1x ArduMower motherboard 1.4 (SMD components pre-designed)
- 1x component set for stocking the PCB 1.4
- 1x DUE R3 development board (or Adafruit Grand Central M4 as option)
- 1x SD card reader incl. 6 pin 10 cm cable (Only required for DUE)
- 1x USB built-in jack incl. USB cable to Due / M4
- 1x high-plug built-in socket
- 1x emergency stop switch
- 1x push button with LED ring
- 1x HC-05 Wireless Bluetooth RF Transceiver (only for the version with loop transmitter)
- 1x ESP32 with WLAN and Bluetooth + SMA antenna adapter + SMA antenna (only for the GPS version)
- 2x motor driver (for 2x MC33926 dual motor driver for DC motors or 3x motor driver + adapter board for brushless motors)
- 1x DC-DC converter
- 1x RTC (real-time clock) incl. battery
- 1x GY-521 IMU with MPU-6050 (accelerometer) (GPS option only)
- 1x HTU21D temperature sensor
- 3x HC-SR04 ultrasonic sensor
- 2x push button für bumper
- 1x motor (DC or brushless)
- 2x drive motor (DC or Brushless)
- 1x charger, suitable for the above recommended battery
Other
- 2 x 1.5 m cables for the motors etc.
- 2 x spring contacts für the bumper
- 1 x LED button
- 1 x emergency OFF switch
- 1 x Hollow plug panel jack for housing
- 1 x USB chassis jack
Cable
- 2x cable 2.5 m (red/black)
- 2x 2 pole 40 cm connection cable für button/button and its LED connector
- 1x 4 pole 40 cm connection cable für 1 ultrasonic module
- 2x 4 pole 20 cm connection cable for 2 ultrasonic modules
- 1x 6 pole 20 cm connection cable for ESP32
- 1x 4 pole 40 cm connection cable für Bumper
- 1x 5 pole 20 cm connection cable für HTU21 temperature sensor
- 2x 4 pole 20 cm, 2 x 3 pole 20 cm (only for DC motors)
- 1x 4 Pol 20 cm, 3 x 3 Pol 20 cm, 3 x ribbon cable (only für Brushless motors)
- 1x 2 Pol 20cm, 1 x 3 Pol 20 cm, 2 x 5 Pol 20 cm (only für the GPS set)
- 2x 3 pole 20 cm (only for the loop set)
Loop transmitter/receiver option with accessories (optional)
- 2x Sound Sensor Module 200x Amplification
- 2x receiver coil
- 1x Perimeter Transmitter Board
- 2x Terminal Block 2-pole RM 5.08
- 1x fuse holder für 5 x 20 mm für print mounting
- 1x micro fuse 5A träge
- 1x MBR 1045 Schottky diode, 45V, 10A
- 2x 47K potentiometer (1 x plug-in axis)
- 2x 100µF capacitors
- 2x LED Grün
- 2x Duo LED Red/Grün
- 1x LED Yellow
- 1x Jumper
- 6x Resistor 220 Ohm
- 1x resistor 560 Ohm (R2)
- 3x 20 pin female header straight
- 1x 10 pin female header straight
- 1x 10 pin male header straight
- 1x Pololu Dual MC33926 Motor Driver Carrier
- 1x INA169 Analog DC Current Sensor Breakout - 60V 2.5A / 5A Marotronics
- 1x LM2596S step-down DC-DC voltage regulator adjustable
- 1x Nano V3.0 ATmega328-AU Arduino compatible
- 1x Gehäuse 120 x 70 x 50 mm (incl. wall mounting)
- 1x speaker terminals 2pin (also suitable as loop cable connection)
- 1x hollow plug mounting socket for housing
GPS option LR (Long Range) (optional)
- 2x ArduSimple GPS RTK System
- 2x LR-XBEE board
- 2x SMA antenna (Attention: Do not interchange with antenna from ESP32)
- 2x GPS patch antenna
- 1x antenna base plate
GPS option NTRIP (Uses correction data über SAPOS service) (optional)
- 1x ArduSimple GPS RTK System
- 1x WLAN module
- 1x GPS patch antenna
ArduMower app
You can get the ArduMower Sunray app HERE, there is a free and a paid version.
Download the 3D printed parts
Some parts of this set are made with the 3D printer. So that you can print these (and additional) parts yourself in case of a defect, or if you would like to have them in a different color, we provide the *.stl files for you here.
Recommended accessories for assembly (not included in the scope of delivery)
- Holder for circuit boards
- ArduSimple RTK Rover (only with GPS kit)
- ESP32
- IMU (optional with GPS kit)
- HTU
- SD adapter (optional, only with DUE)
- USB power supply + micro USB cable for base (only for GPS kit with own base)
- Housing for base (optional)
- Connectors in the supply lines for emergency stop, battery, charging contacts (optional for higher maintenance comfort)
