ESP8266 Community Forum

- Sat Dec 08, 2018 4:51 pm #79475 I have developed a quite big application on the esp8266 (2 years development) and I am now in hardware integration trouble !

The whole electronics fits on a home made PCB which is 133x15mm, and I have no room to enlarge it.
I need 4MB flash (similar to ESP12) because I want OTA.
I need a module with less than 14mm width and 8 or (preferably) 9 I/Os.
ESP12 has the flash but is 16mm width
ESP03 is 12mm but has only 1MB flash, same for ESP8285 modules like ESPm1 or 2.

Prototypes use ESP03, where I remove the existing flash and replace it with the required size.
Nice for playing, not for production !!

My questions:
• Is there any alternative solution that I did not see ? (another esp module ?)
• Or any way to purchase ESP03 modules with no flash (in order that I can sold one easily)
• Or do I have a chance succeeding the design of my own esp8266 module ? (I am comfortable with all things related to power, I/Os etc. I am not comfortable with antenna, coils etc. at those frequencies.)

Do you know if anyone already tried this ?
Or do you know about any forum to share experience ?

Thank you in advance for your help.

Henri

- Tue Dec 25, 2018 4:25 pm #79713 Grind 0.5mm off of each side of an ESP12?

- Thu Dec 27, 2018 12:26 pm #79740 [quote="hmiezin"]I have developed a quite big application on the esp8266 (2 years development) and I am now in hardware integration trouble !

I don't wish to appear rude but if you've spent 2 years developing this project & only just discovered this issue I'm glad you don't work for me!

Your code must be big if you can't use OTA?

Ian