| An ESP32 build that polls two Steca inverters, a HomeWizard P1 meter, and an AEG battery straight over LAN — no vendor cloud, no app-hopping...
More about Elektor Labs (858)
| A PIC16F1455, seven passive parts and a USB connector are the whole circuit. Everything else happens in a terminal window: type ASCII comman...
| Bipolar current sources usually need a DC/DC converter, digital isolators and four switches. This one needs none of them: a voltage referenc...
| Boost converters replace the mains transformer here: 12 V goes in, 230 V comes out for the anode and 16 V for the heater. At maximum volume...
| Every solder joint on a PCB is a thermocouple, and at 20 nV resolution, they matter. This UI calibrator answers with a 50°C oven under the m...
| Turn one Teensy 4.0 into a versatile 6-in-1 SDR radio clock that switches between DCF77, MSF60, three EFR carriers, and TDF162 at the press...
| Moving-coil cartridges put out barely a millivolt, and getting that to line level without noise is hard. This preamp revives an old John Lin...
| Discover the Elektor Zener Diode Tester Kit, a DIY bench instrument for testing Zener diodes, LEDs, and semiconductor devices up to 54 V.
| Three transformer stages switch in automatically, so the pass transistor only ever drops the minimum. A Power-MOS rectifier and voltage doub...
| An FM IF amplifier IC becomes a shortwave propagation meter. Instead of tuning a station, the CA3089's logarithmic RSSI output on pin 13 mea...
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