ieee488:
I was on eBay recently and was searching for ESP-01 breakout boards and saw that products such as Screenshot by Lightshot are now being sold. Very handy.
they breakout only rx/tx. no io 0 or io 2. to flash the esp8266 a 3.3 V USB to TTL adapter is needed and jumper to ground io0.
I have this version of 5V adapter board with ESP-12F glued. io 0 and io 2 are not connected to header (I patched io 0)
floresta:
In other words you are using an esp-01 with a level shifter, just as has been recommended. Your esp-01 inputs are not being fed 5 v with your setup.Don
True, its not fed by 5v its still 3.3V , but adapter can be connected to 5v which has higher current rating then 3.3v output and so ESP-01 works correctly. And its so cheap and compact (at least in my project) so i wouldnt bother with creating my own level shifter
If you don't have any already for ESP-01 breadboard testing, these are really nice while also creating a friendly environment to implement level shifters.
floresta:
When was the last time you tested that particular esp-01 to see if it still performed according to specifications.Don
I haven't sir; I'm a simple minded hobbyist.
I suppose there must be a good reason for not running your arduino on 3.3V?
