- Sat Mar 07, 2015 3:23 pm
#11546
Hi,
I just got 2 units of ESP8266-01 and I am not able to test them via the Arduino. I don't have a USB to serial convertor hence cant flash the unit and try. Is there anyway I can confirm whether I have working units. I have tried both of them and they don't work. My Ardunio is loaded with Bareminimum sketch. More details below:
I have connected ESP module to a separate 3.3 power supply. Connections are as under:
ESP connections:
Vcc -> 3.3 , CH_PD ->3.3 ,
I have tried pulling RST , GPIO0 & GPIO2 to 3.3V also but things don't change
Arduino -> ESP connections:
Rx -> Rx
Tx -> Tx
On powering the unit I get the red LED lit up and blue flashes once. When I send AT command I can see blue LED blink once and I get back 2 characters of garbage data back at baud rate 9600. I don't get anything back when I set the baud rate as 115200 or 57600.
Can somebody please point me in the right direction. As both the units behave the same I doubt if the units are faulty.
I just got 2 units of ESP8266-01 and I am not able to test them via the Arduino. I don't have a USB to serial convertor hence cant flash the unit and try. Is there anyway I can confirm whether I have working units. I have tried both of them and they don't work. My Ardunio is loaded with Bareminimum sketch. More details below:
I have connected ESP module to a separate 3.3 power supply. Connections are as under:
ESP connections:
Vcc -> 3.3 , CH_PD ->3.3 ,
I have tried pulling RST , GPIO0 & GPIO2 to 3.3V also but things don't change
Arduino -> ESP connections:
Rx -> Rx
Tx -> Tx
On powering the unit I get the red LED lit up and blue flashes once. When I send AT command I can see blue LED blink once and I get back 2 characters of garbage data back at baud rate 9600. I don't get anything back when I set the baud rate as 115200 or 57600.
Can somebody please point me in the right direction. As both the units behave the same I doubt if the units are faulty.
