Shopping List
A shopping list for your Open Mower build.
If you make a purchase through the links marked with an Asterisk (*), I may earn a small commission at no extra cost to you. Thank you for supporting this project!
Warning
Read this first: Important InfoParts for the Robot and the Charging Station
| Name | Description | Quantity Required | Source Link | Notes |
|---|---|---|---|---|
| Mower (YardForce Classic 500(B)) | The mower to modify. | 1 | Amazon* | Check the Compatible Mowers |
| Open Mower Hardware Kit | The electronics we will mount inside the robot. Consists of the mainboard (includes LiPo charger), xCore board, and 3x ESC. | 1 | Contact @Apehaenger on Discord, he has Hardware available (see Announcement ) | Alternatively you can source and solder most of these parts yourself. Check the repositories in the Links section for PCB designs and BOMs. |
| Ardusimple RTK2B GPS + Antenna | Positioning system for the robot | 1 | ArduSimple | Some users use UM9XX chips (available from WitMotion and AliExpress ) as alternative. Compared to ArduSimple, they’re a bit cheaper and support triple-band frequencies. |
| Raspberry Pi Compute Module 4 with WiFi | The brain of the robot. RAM: 2GB+ for running the software 4GB+ for development 16GB+ storage (eMMC or µSD Card) | 1 | RPi Locator | Must plug into the xCore board — CM4 and CM5 are supported. Other CM-compatible boards may work but the pre-made OS image won’t. |
| µSD Card | Only for RPi CM4 Lite. The absolute minimum capacity you should buy is 16GB. But better buy a 32GB one | 1 | Amazon* or your local hardware store | |
| Optional: | Optional: | |||
| USB Wi-Fi Dongle | For better Wi-Fi reception | 0 | Check for Linux Support | |
| Left-Angle USB adapter | If you want to keep Wi-Fi dongle inside the mower. RPi USB is really close to the mower side wall | 0 | Amazon* or your local hardware store | The kit contains the wire to connect external USB port. That may be enough if Wi-Fi dongle is waterproof. |
Parts for the GPS Base Station
Info
You only need a GPS base station if you don’t have access to an external NTRIP service. There are multiple free services available, so check before buying this.| Name | Description | Quantity Required | Source Link | Notes |
|---|---|---|---|---|
| Raspberry Pi + SD Card + Power Supply | You can basically use any Raspberry Pi for this. No special requirements. | 1 | e.g. Raspberry Pi 4 | |
| Ardusimple RTK2B GPS + Antenna | Positioning system for the base station | 1 | ArduSimple | See above |
For the setup check the GPS Base Setup Guide
Last modified June 25, 2026: Reorganize Knowledge Base into logical sections (36d1327)