Contributed by iiv, curated by Ai-Thinker

Hello everyone. Recently the forum had a giveaway of this dev board, and many friends got one. This board does not have the auto-download part soldered, and it sells for 35 RMB. If I were buying it myself, I would choose the Xiao An Pai DU at the same price (seems to be the first-order price); it has an extra USB port and supports auto-download. I digress — back to the topic. Actually, the M61 auto-download is not that complicated: just connect the RTS and DTR of the CH340 to the module's EN and IO2 pins (see the Xiao An Pai DU schematic for details: click here). PS: I don't recommend everyone follow my example; I'm just sharing the method. Watch the show. In fact, pressing a button isn't much trouble, because these pads are really small and some friends may accidentally bridge solder. If you have good hands-on skills and are interested, you can try soldering it.

After some searching, I found the corresponding pad positions. We need to fly 2 wires in total; just follow this diagram when soldering. Any pad inside the circles can be used for the fly-wire.

This is what I soldered myself. In practice, auto-download works under VSCode, but it doesn't seem to work in the Bouffalo flashing tool, so if you use that tool, just press the button manually!

OK, that's my sharing. If you have any questions, feel free to leave a comment and discuss!

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