I connected the ESP01 board via USB-TTL converter. Even though the connections are correct, it does not respond to AT Commands. What should I do?
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Thanks in advance for your cooperation.
PS I moved your post for this time
PS2 what does immediate mean ???
PS3 really do yourself a favour and please read How to get the best out of this forum and post accordingly (including code with code tags and necessary documentation for your ask like your exact circuit and power supply, links to components etc).
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It is synonyms of emergeny and thanks
Be patient ?
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We can’t help if you don’t provide the details
My wiring diagram:
USB-TTL - ESP01
3V. 3V3
GND. GND
TX. RX
RX. TX
3V. EN
Baudrate 115200
Nl and CR
You flashed the ESP01 with AT firmware?
Circuit cards and program code are neither emergent nor urgent.
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Yes I did
It's for my project.
until we get the full details it's hard to help.
are you saying you connected the ESP-01 just with an USB to Serial converter?
which terminal are you using to send commands?
any arduino involved ?
post a picture
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Yes. I connect ESP01 to my compuater via a USB - TTL conventer. I try to connect esp01 with putty and arduino ide. But it didnt work. This is my serial port screen:
I wrote "AT" and this screen is same
This is putty configuration screen:
And I start the session and screen:
do you have a link to your USB to UART adaptor?
post picture
Profilim USB to ttl
do you know if the 3.3V line provides enough current to power the ESP-01?
does it work at 3.3V for Tx and Rx ?
Yes it work
do you have the datasheet for that product ?
does a loop back work ? (connect Tx to Rx and you should see what you type coming back)
This is datasheets link: PL2303 Datasheet(PDF) - Prolific Technology Inc.
And I try this
that's the chip's datasheet. What you need is the one from the module itself