Use this forum to chat about hardware specific topics for the ESP8266 (peripherals, memory, clocks, JTAG, programming)

User avatar
By BadDeveloper
#12834 I connect the ESP8266 module to the Raspberry Pi device. It connects normally. The red indicator is on; while sending UART commands the blue indicator is also on. But on connection at 9600 baud there is ERROR response for all commands.

Example:

AT
ERROR


If the connection speed is at 57600 baud, the "\0xe0\0xe0" response comes.
Besides the UART connection to the RX, VCC, TX, GND ports, I transmit 3.3 V to the CH_PD port. The GPIO0, GPIO2, RESET pins are not connected to anything.

Please advice what should I do to make the module work properly.
User avatar
By swilson
#12902 Did you flash the esp with firmware. Some of them come with no firmware on them. Try that and then try 9600 and 115200 baud rates.