Hi, i was buying different ESP Devices (ESP01, ESP01s, NodeMCU1, ESP32). I am looking to build some Wireless Tempereature and Humidty Sensors and wanna test the different Boards, finding the one with the least Power usage and sufficient calculating Power. I could Programm the NodeMCU1 with the Ard…

[image] karloz1: I was reading something about putting the ESP in programming mode by a jumper but that didnt help either. and we should guess what you did? do yourself a favour and please read How to get the best out of this forum and modify your post accordingly (including code tags and ne…

What Information could i add to make it more specific? i jumped ground to IO2 like i was reading on some guides, i got the same issue with the ESP01s so i dont think i have a faulty board. I think the code doesnt matter since it compiles and i cant upload it to the board, after i had issue i used t…

A drawing of your circuit, how it's powered etc...

If you have a USB to TTL programmer, make sure that the logic levels do not exceed 3.3v CHJ_PD is connected to VCC (3.3v) Programmers TX to ESP RX (this is where the logic level is most important !) Programmers RX to ESP TX GPIO 0 (not 2) connected to GND at boot will put it in flash mode. make s…

Programming ESP01

Development Tools IDE 1.x

J-M-L May 4, 2022, 11:25am 2

and we should guess what you did?

do yourself a favour and please read How to get the best out of this forum and modify your post accordingly (including code tags and necessary documentation for your ask).

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Programming ESP01

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