Espresso Coffee Shot Timer RP2040 (No soldering)

☕ Magnetic Espresso Shot Timer (No Soldering)

A compact, magnetically mounted espresso shot timer designed for a clean, cable-friendly setup and tool-free assembly.
It automatically detects machine vibration, starts the countdown when brewing begins, and keeps your workflow distraction-free.

✨ Key Features

• Magnetic mounting (hidden magnets)
  The holder is fixed with 9× magnets (5×3 mm), fully hidden inside the body for a clean look.
  The print uses a custom G-code pause so you can insert the magnets mid-print — easy and reliable.
• Snap-fit back lid (no screws, no glue)
  A purpose-designed snap mechanism securely closes the back cover while still allowing access when needed.
• No soldering required
  Just connect USB-C to a Waveshare RP2040 — that’s it. No soldering, no extra tools.
• Automatic start via vibration detection
  The timer detects machine vibration (ON/OFF) and starts counting automatically.
• Two holder lengths included
  • Short version — for angled USB-C cables
  • Long version — fits most standard cables (tested with Ugreen and Apple cables)
• Clean installation
  No permanent modifications to your espresso machine.

🧠 Firmware Options

The model is optimized to work without a water level sensor using my fork:

• Optimized firmware (no water sensor required):
  https://github.com/daniilkrant/profitec-go-waterlevel-shottimer/tree/feat_add_mode

You can also use the original firmware and add a water level sensor if you prefer:

• Original project & instructions:
  https://github.com/lspr98/profitec-go-waterlevel-shottimer?tab=readme-ov-file

🖨️ Printing Notes

• Materials: PLA or PETG
• Supports: Optional (model works with or without supports)
• Magnets: 9× round magnets, Ø5 mm × 3 mm
• Assembly: Tool-free, snap-fit closure

📦 What’s Included

• Magnetic holder (short & long versions)
• Snap-fit back lid
• Internal magnet pockets
• Ready-to-print STL files

☕ Perfect For

• Espresso enthusiasts
• Clean coffee setups
• Profitec GO, Gaggia Classic and other machines with vibration pump
• Anyone who wants an automatic, minimalist shot timer

❤️ Support the Project

If you like this design and it improved your coffee workflow:
👉 Boost 👍, Like ⭐, and Share on MakerWorld — it really helps future updates and new coffee tools!

Happy brewing ☕