JEROME TOMSKI

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JEROME TOMSKI

FRANCE
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Description

Adjustable 1A USB electronic load

An example of an electronic load, allowing you to draw 0 to 1A from a USB port, so you can test it under load.

Control is via PWM, managed by an ATtiny 824 (programmed via UPDI). The program is written in C++ and can be uploaded via the Arduino IDE.

All the details here (calculations, code, tests, …): https://passionelectronique.fr/charge-electronique-usb-1a-attiny/

Schematic and Layout

Schéma électronique Charge USB 0-1A

ChargeElectroniqueUSBAde5Vjusqua1A_schema.jpg

Jul 17,2025

356 views

Adjustable 1A USB electronic load

2 Layers PCB 32 x 97 mm FR-4, 1.6 mm, 1, HASL with lead, White Solder Mask, Black silkscreen

An USB electronic load (1A), driven by ATtiny 824

356

Published: Jul 17,2025

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Topic

DIY Electronics

Educational

DIY USB Educational

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