Hmm... Do I put this in General Electronics or Project Guidance? Hmm...
Thanks for taking the time to read this post. I am trying to do a project which requires some pretty hefty work as a web server. The first version used the WiFiEsp library and an ESP-01. It "works" but lacks in power. AT commands over serial just doesn't provide enough power.
So, the new version will attempt to use an ESP-12F over SPI using the WiFiSpi library. My "Arduino" uses an ATMEGA1284 at 20MHz and runs on 5V. The board is already completed and I don't want to redesign everything for 3.3V,
I have cobbled a schematic together from various sources. The logic level converter is from a SD card module. The WiFiSPI library suggests a safe CS circuit because the ESP won't boot if the CS pin is low. That left one channel open which Jiri suggested I should use for RST. I am trying to implement a power switch (EN pin) using a PNP transistor. I brought out the TX0 pin just because the library can send debugging info via serial. Building a prototype is no small task because the ESP has a 2mm pitch.
If you have read this far, please take a look at the schematic and let me know of any errors you may detect. I sincerely thank you.