ESP8266 Community Forum

- Sun Oct 08, 2017 6:00 am #70713 Hi guys,

It's just me or sometimes after uploading a simple sketch (blink led) the code doesn't work (no boot properly) ?
I have to repeat the same procedure a couple times in order to put the code running.
Thank you in advance.
Regards,

Luiz

- Tue Oct 10, 2017 8:42 am #70773 I don't recognize this behaviour, the only thing that occurs is that I can program one board at a faster rate than the other, but I'm hardly ever having programming or booting errors.

Assumption is the mother of all f*ckups; I should know: I've been assuming a lot.
When you're new, don't begin with a separate ESP (ESP-01 to ESP-14) module.
Get yourself a proper development board: NodeMCU - WeMos D1 - Witty Board - ESP Thumbdrive - Industrial (TTL RS232 only)

- Tue Oct 10, 2017 4:08 pm #70788 I have read about a lot of people complaining about ESP on breadboards.
I bought one of this and I'm going to give it a try. I hope to get no more errors.
Thank you.
Regards,

Luiz

- Fri Oct 20, 2017 11:16 pm #71044 There's no info about what type of ESP-module you use. If it's an ESP01, the breadbord you suggested might work. However, it still requires re-wiring.
If it's a different model, like ESP07, ESP08 or ESP12x, you should keep in mind, the pin-distances are not 2.54 mm, but 2.0 mm. There will be a mismatch in such case, but can be solved by connecting small wires between your module and the breadboard (as for the USB-to-UART converter).

Another thing you might keep in mind : verify if all components are well soldered at your module. On occassion I've seen loose connections at ESP-modules.

Flex Red Devil. The best programmer available for multi-programming and tinkering with ESP01, ESP03, ESP04, ESP05, ESP07, ESP08, ESP11 and ESP11.