Original firmware and hardware solution/schematic by: Cezar Chirila; URL: https://www.allaboutcircuits.com/projects/how-to-DIY-waveform-generator-analog-devices ...

More than 7 years ago, Elektor published my 500 ppm LCR Meter AU2013. Since then I have developed a new LCR Meter, sacrificing a little on extreme accuracy for the sake of extended functionality. A ...

Finally, the long announced Tonuino-PCB for Wemos' Lolin32 is there. It can (optionally) be used alongside with a headphone-pcb. As uC-develboard a Lolin32 is used and it's (optionally) ...