GuSi the internet radio

Reduced to the essentials – open to everything

The GuSi radio is designed for simple, intuitive use and easy DIY assembly, with as few buttons as possible, no tiny displays with complex menus, and a clean, elegant minimalist design, making it perfect for .

Future Vision

The current Raspberry Pi–based version of the radio runs stable and reliably. My next step is to build a model based on ESP hardware. This approach offers several advantages — the biggest one being the lower cost, and the second a much faster boot time. By switching platforms, the startup time will be reduced from about 30 seconds to just 2 seconds.

Build your own radio

Building your own GuSi radio is straightforward and rewarding. All necessary parts can be 3D-printed, assembled with basic tools, and easily configured without advanced programming skills. Every step from printing and wiring to setup and stations is documented.
1Print the housingfrom

All case parts are available as free STL files and can be printed using a standard 3D printer. Don’t have one? Ask a friend or use an online printing service.

2Assemble

Putting the hardware together requires only basic tools like a screwdriver, soldering iron, and wire crimper. Once built, you just add your favorite stations. Everything is well documented and easy to follow – from wiring to setup.

3Connect

Connecting GuSi to your network is easy: use WPS or let GuSi create a Wi-Fi hotspot for configuration via smartphone. No app or technical knowledge needed.

The main features

Foolproof Operation
Designed with simplicity in mind: There’s almost no room for wrong input. Just power on and enjoy – no menus, no confusion.
Voice Guidance
GuSi speaks. It guides you through the setup and informs you about errors like missing Wi-Fi or connection issues – clearly and calmly.
Easy Wi-Fi Setup
Connect in minutes: Use WPS or a hotspot for configuration with any smartphone. No app required.
Just your favorites
Add as many stations as you like during setup. But in daily use, GuSi shows only the stations you really need – simple, focused, and just right for everyday use.

The models

Currently, all three GuSi models share the same core electronics, software, and philosophy of simplicity.
They differ mainly in how stations are selected and whether a pause function is included.

BM1K

Perfect for anyone looking for a radio that is easy to use. Ideal for seniors, children and purists.
  • Power button
  • Rotary button (vol. / station)
  • Unlimited number of stations

BM2K

Perfect for everyday life. Simple operation with additional flexibility with the pause button.
  • Power button
  • Rotary button (vol. / station)
  • Pause / Play button
  • Unlimited number of stations

RM5K

Nostalgic design meets modern technology – perfect for anyone who loves a vintage look.
  • Power button
  • Rotary button (volume)
  • Pause / Play button
  • Four stations

EM2K

New generation based on ESP. More affordable and more comfortable at the same time.
  • ower and sleep button
  • Rotary button (vol. / station)
  • Pause / Play button
  • Unlimited number of stations
  • Battery powered

Frequently Asked Questions

Material costs start at around 75 € – assuming you already have basics like screws, Dupont connectors, and wires.
If you need to buy everything from scratch, expect around 90 to 100 €. A detailed parts list is included in the assembly instructions.

  • 3D printer (Or use the online service or ask a good friend 😉)
  • Soldering iron
  • Dupont crimping tool
  • SD card reader

In short: no. 😉

Adjusting the code is as simple as adding your favorite stations. Just paste in the right stream URL.

Yes – even directly on the device!
1. Adjust the desired volume on the radio.
2. Press the rotary encoder for about 6 seconds. The currently used volume will be saved as the default value.

The name GuSi stands for "Gutes Signal", which translates to "Good Signal" in English. In German, the phrase has multiple meaning: it refers to a strong reception signal and to sending a positive message – doing something good or meaningful. The name reflects both the technical purpose of the device and design philosophy.

Have more questions?

Just check out the instructions or message me on Printables if you have any questions.