A must have circuit when you go to debug EMC problems in an electrical panel. Long wires (50 m) connected …
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ESP32 self updating from web server
Over the air ESP32 update, fetching firmware from folder in remote server. The new .bin file is located in a …
Read morePV string simulator to test grid solar inverters
A simple and inexpensive circuit to power a grid-tied photovoltaic inverter on the DC side, reproducing the i-v characteristic of a photovoltaic string. Useful to power an inverter at the bench, during repair.
Read moreDIY Pick and place machine with OpenPnP
This PnP machine is designed to be precise (linear rails) and economic (small 3D printed parts, wooden frame), and use …
Read moreFlash .hex files on Atmega without Arduino IDE
Download XLoader. Select your .hex file. Select your device, com port and baud rate. Click upload.
Read moreElectromagnetic gun
This is a nice experiment to throw an aluminum “bullet” up in the air at high velocity, and demonstrate the …
Read moreFlashing lamp circuit
When the circuit is powered up a certain current flow from the base of transistor BC558 into the 560 k? …
Read moreLT Spice repetitive signal
PWL that loops forever LT Spice – How to simulate a repetitive signal? There is a quick and easy way …
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