fish001

USB serial port automatic downloader

Overview

USB to TTL module made using CH340N. SOT-223 packaged voltage regulator has strong 3.3V power supply capability.

There is a MOS control negative electrode, which has an automatic power-off cold start function when downloading programs for STC microcontrollers or ESP series microcontrollers.

It is small in size and can be installed into a universal downloader aluminum case.

PCB front and back

After welding

Can weld simple bull

Can be put into aluminum case

Design Files

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Update:2025-06-19 03:23:21

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