Re: Problem flashing after RST and GPIO16 connected...
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Thanks for the solution, also worked for me! (added 1K). Strange thing - it was working fine with the plane wire for a week or so and then suddenly stopped.
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martinayotte wrote:This is because you used a plain wire between RST and GPIO16.
The issue is that GPIO16 provides a strong HIGH during deepSleep and your external reset from Serial-TTL is fighting to make a reset, but loosing, the GPIO16 is the strongest.
To avoid such issue, simply replace the wire by a 470R or 1K between GPIO16 and RES, which will allow the Serial-TTL to win. (you can also use a schottky diode with the cathode on GPIO16 side)