Elektrosluch Mini City (DIY kit)
Elektrosluch Mini City is a DIY kit version of Elektrosluch, our open-source device for electromagnetic listening. Build your own device for discovering the sonic worlds of the electromagnetic fields surrounding our every step — just plug in your headphones & explore. The circuit is identical to the Elektrosluch 3+.
The kit contains all the necessary parts, including the plastic top cover and a battery. 🛠️ Build guide
The kit is easy to assemble, but some soldering experience is required. Please make sure you are able to assemble it on your own before you start; if you are not sure what you are doing, find someone around who can help — we are not able to solve build issues over the internet. You will need a soldering iron, solder, a Phillips screwdriver and side cutters for cutting the leads.
Features
- Same circuit as Elektrosluch 3+: improved signal-to-noise ratio and extended frequency response
- Complete soldering kit with enclosure and battery
- Educational — learn how an electromagnetic listening device works
- 60 dB maximum gain
- Open-source design (CC BY-NC-SA)
- 9 V battery powered
Tech Specs
Stereophonic electromagnetic listening device (DIY kit)
Power: 9 V battery (user replaceable)
Headphone / line output: 3.5 mm (1/8″) stereo minijack
External input: 3.5 mm (1/8″) stereo minijack
Maximum gain: 60 dB
Assembly: basic soldering skills required
Operating temperature: −10 °C to +55 °C
Specifications are subject to change without notice.
In the Box
- Elektrosluch Mini City PCB
- all electronic components
- plastic top cover
- 9 V battery
Compatible Accessories
- Elektrouši — a pair of passive external sensors that plug into the external input for an extended sensing range
- Elektroucho Pro — mono passive sensor with XLR output for standard preamplifiers and recorders
Open Source
Schematic & board files (Eagle format and PDF)
Licensed as CC BY-NC-SA
Concept & electronics by Jonáš Gruska
Made in EU