jsaily wrote:I found a solution for Arduino IDE using these modules! The SPI flash in these ESP-01 modules marked "V3.0" is 8Mbit and it's using SPI-mode DOUT which is not in the standard Arduino IDE for ESP8266.
You need to manually add the DOUT mode like instructed in this post (in the bottom of it):
https://github.com/esp8266/Arduino/issues/1700
Jussi
Thank you so much! I was about to rip my hair out trying to get these to work. Setting flash mode to DOUT did the trick.