| The “Donut” WB loop antenna shipped with some SDR receivers may be fundamentally flawed — its printed coils cancel each other out! This quic...
More about Elektor Labs (832)
| Struggling with weak Wi-Fi on your ESP32 module? A simple wire antenna mod can boost signal strength, double range, and improve stability fo...
| This test board lets you evaluate audio opamps and various resistor types under identical conditions. Now with support for Through-Hole and...
| ESP32's ADC suffers from poor response at low voltages, causing non-linearity. This project introduces a summing amplifier circuit to linear...
| Tired of the loud fan on your ET5410A+ DC load? This DIY mod quiets the unit at light loads and boosts cooling at high loads. By adding a di...
| Extend your UPS and solar battery life! PbMonitor shows real-time voltage, current, and temperature per battery — built with ESP32-C3 and MQ...
| Enjoy soothing music every time someone enters your guest restroom! This MP3 player uses a PIR sensor, Li-ion batteries, and a DFP audio mod...
| Build a compact lithium battery health monitor that shows State of Charge (SoC) and State of Health (SoH) using colorful LED bars. Based on...
| This compact, cloud-connected Redox meter uses an ESP32, OLED display, and ORP sensor to precisely monitor your pool’s water quality. With m...
| Prevent runaway RC vehicles with this failsafe system! Using an ATtiny85 microcontroller and an optocoupler, this project monitors the radio...