Machine review
DIY / Arduino Pen Plotter Review
Open-source builds using Arduino Uno + CNC shield + GRBL + Inkscape (Keyestudio/SainSmart kits, Instructables/Hackster guides). Build cost cited ~$75+ (unverified). Pure hobby — not a production tool, but the cheapest way to understand the tech.
Specs at a glance
| Type | Pen plotter |
|---|---|
| Tier | Desktop / prosumer tier — suited to testing, hobby, and low-volume use |
| Brand | Open source |
| Price (USD) | approx. $75 (unverified) |
| Plot / write area | Varies by build |
| Auto-feed | No (manual feed) |
| Pen types | Ballpoint |
| Software | GRBL + Inkscape |
| OS | Windows, macOS, Linux |
| API | No |
| Throughput | Hobby only |
| Best for | Hobbyist |
Pros and cons
Pros
- Cheapest entry point
- Educational
- Fully customizable
Cons
- Not production-grade
- Requires assembly + tuning
- No support
Specs and price last checked June 17, 2026. A "~" or "unverified" note means the figure came from a third party or a non-USD source — confirm with the vendor before buying.