ESP8266 - ESP07/12 Breadboard Adapter

[TJ232]

Good Morning All,

A new ESP8266 - ESP 07/12 Breadboard Adapter safely arrived in my MailBox. This time it's coming from Baoshi, a member of EEVBlog Forum .

For more details, pictures, etc: http://www.esp8266-projects.com/2015/03/mailbag-arrival-new-esp8266-adapter.html

Youtube video of the NodeMCU Firmware upload process and first run, the infamous Blinky 

[ralphd]

The reset/boot circuit is neat.  I think it would be even better with a flip-flop (only 2 transistors needed) so that entering flash mode isn't time dependent.

[TJ232]

The reset/boot circuit is neat.  I think it would be even better with a flip-flop (only 2 transistors needed) so that entering flash mode isn't time dependent.

It's just a different approach from the standard 2 buttons one. You can try it also with a flip-flop circuit and share with us the results. Some timing still remain I think.
I prefer separate RST and PRG buttons for good reasons.I don't change the firmware very often or at all.

[baoshi]

The reset/boot circuit is neat.  I think it would be even better with a flip-flop (only 2 transistors needed) so that entering flash mode isn't time dependent.

The GPIO0 has to be held low for 15-20ms after rising edge of RESET in order for ESP8266 to enter into bootloader mode. And the held down shall not exceed 700ms because after that ESP8266 seems to output some data from GPIO0. This is the main design requirement of the reset/prog circuit.
Since I'm doing firmware development, I press the button almost every minute. Lua or AT developer probably does not need to flash the chip that often.
I'm now working on a newer version of the board with more intelligent reset circuitry.

Thanks for the post.