Hello,

I am using a 2 channel relay module (http://www.chinalctech.com/xwzx/24.html) with ESP-01 to control the relays. I have uploaded a custom code to ESP-01. ESP-01 is supposed to connect to my WiFi, start a HTTP server and wait for requests. Based on the HTTP request received, it should switch ...

Ok,it started working with ESP instead of USB.

This is the test code:
void setup() {
Serial.begin(115200);
}
void loop() {
//open first relay
char bb[] = {0xA0, 0x01, 0x01, 0xA2};
Serial.write(bb, sizeof(bb));
delay(1500);
//close first relay
char bb1[] = {0xA0, 0x01, 0x00, 0xA1};
Serial ...

Hello,

I am trying to use a 2x relay ESP module (http://www.chinalctech.com/xwzx/24.html) to work as USB module, but the module does not seem to respond to the instructions sent via serial.

I have connected the module like this:
relaymod.png

In words:
- TX of USB is connected to the RX on the ...