- Fri Dec 02, 2016 12:34 pm
#59015
Hi All,
This is really doing my head in,are trying to get an uno connected to my network using an ESP-01.
ESP is powered by its own 3.3 volt regulator and responds to AT commands when connected to putty using a USB to serial convertor.
Have updated ESP module firmware succesfully and connected ESP to arduino using a 2k2 and 1k0 resistor level shifter on ESP rx pin (also tried a 10k and 4k7 level shifter)
Changed ESP baud rate to 9600 from 115200 after firmware update.
When trying the espdebug example installed with WiFiesp library I get a "ready" in the terminal if the ESP module is powered up after the arduino,so data is received by arduino from ESP module,when sending AT commands from arduino IDE serial monitor there is no response from the ESP module.
Then replaced the ESP module with the USB to serial convertor connected to the software serial pins on arduino,open a second serial monitor and the same debug sketch results in communication from arduino to serial convertor and vice versa so software serial seems OK on arduino.
It appears the ESP module is not receiving any AT commands from the arduino so is not responding.
Is it worth trying a proper level shifter instead or resistors ?
Other people have used resistors with no problems according to many forum posts.
Any ideas welcome,
Thanks
Dave
This is really doing my head in,are trying to get an uno connected to my network using an ESP-01.
ESP is powered by its own 3.3 volt regulator and responds to AT commands when connected to putty using a USB to serial convertor.
Have updated ESP module firmware succesfully and connected ESP to arduino using a 2k2 and 1k0 resistor level shifter on ESP rx pin (also tried a 10k and 4k7 level shifter)
Changed ESP baud rate to 9600 from 115200 after firmware update.
When trying the espdebug example installed with WiFiesp library I get a "ready" in the terminal if the ESP module is powered up after the arduino,so data is received by arduino from ESP module,when sending AT commands from arduino IDE serial monitor there is no response from the ESP module.
Then replaced the ESP module with the USB to serial convertor connected to the software serial pins on arduino,open a second serial monitor and the same debug sketch results in communication from arduino to serial convertor and vice versa so software serial seems OK on arduino.
It appears the ESP module is not receiving any AT commands from the arduino so is not responding.
Is it worth trying a proper level shifter instead or resistors ?
Other people have used resistors with no problems according to many forum posts.
Any ideas welcome,
Thanks
Dave
