Esp8266 arduino no pins12/14/2023 Forgive me for the small offtop but I had to write it Returning to the problem, maybe this page will help you when you have finished connecting. In the end, to my delight, I solved a problem that was very banal, so to use the RX, TX pins you need to use the "Serial1" command and not the "Serial" itself when communicating with the BT module, of course in my case. However, after a while I realized that I would miss these pins for the project so I started looking again for what might be wrong. TX and RX hardware pins did not work, so I looked for information on the network, three days to no avail, and then used the Software Series on other pins. I suggest you start again from the beginning and slowly move forward because I had, like you, but with a Bluetooth module. At startup, pins are configured as INPUT. Pin 16 can be INPUT, OUTPUT or INPUTPULLDOWN16. Digital pins 015 can be INPUT, OUTPUT, or INPUTPULLUP. pinMode, digitalRead, and digitalWrite functions work as usual, so to read GPIO2, call digitalRead (2). Is also right that you read either without understanding or too little information about connecting the module to Ardu because it is full. Pin numbers in Arduino correspond directly to the ESP8266 GPIO pin numbers. And believe me that he has a lot more knowledge and will definitely help you in more serious problems so don't be surprised that he responds in such a tone. Besides a higher input voltage than 12V has no advantage. I wanted to save pin D1 into a variable and use it to declare pinmode and when using pin. Now, connect ENA pin of L298 motor controller to the Arduinos pin 9. You cannot use the TX/RX pins both for communication with the PC AND communication with an external module at the same time. The signal levels of the ESP8266 module are 3.3V but the Arduino board runs at 5V, you need to use a resistive voltage divider to convert the TX output. I am using an ESP8266 and do not know why I cant compile. It is not a duplicate of the above question.In that the led lights are not glowing but here the esp8266 is not responding to the AT commands. In addition, I understand a little frustration of colleague "Piotrus_999" because he must answer (without offense) silly questions like "where is plus and where minus" for the "time" enty. Note that pin 0 of the Arduino board selected as RX connects to the TX pin of the Bluetooth module, and pin 1 of the Arduino board selected as TX connects to the RX pin of the ESP8266 module. Where did you find the diagram to connect the RX pin to RX since it is short for Received? You understand what I mean? Transmission-> Reception and not Reception-> Reception. Use a 1k and 2k(1+1k) resistor divider to make 3.3v( taking output from 2k). As you can see in my code, it IS initiated with but the behaviour, scarcely, seems it does not have any. Without activated internall pull-up, there is no pull-up for this pns. The esp8266 has internal pull-up and you activate it with pin mode INPUTPULLUP. Buddy "mr_bl" slowly ask and believe me that you will get the right help but without exaggeration. No, esp8266 01 module cannot take in 5v logics. The NodeMcu has no pull-up on pins 12 and 14.
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