ESP32/ESP8266 firmwares and tools
Default UART: 115200 8N1. AT commands sent with CR/LF.
Use cutecom, for example.
Turn on the first relay: A0 01 01 A2 Close the first relay: A0 01 00 A1 Turn on the second relay: A0 02 01 A3 Close the second relay: A0 02 00 A2
echo -n -e "\xa0\x01\x01\xa2" | nc 192.168.18.20 8080 -w0
echo -n -e "\xa0\x01\x00\xa1" | nc 192.168.18.20 8080 -w0
echo -n -e "\xa0\x02\x01\xa3" | nc 192.168.18.20 8080 -w0
echo -n -e "\xa0\x02\x00\xa2" | nc 192.168.18.20 8080 -w0This programmer plus a jump to ground GPIO 0 to GND in program mode as shown here.
https://tasmota.github.io/docs/devices/LC-Technology-WiFi-Relay/
LC Technology WiFi Relay - Dual Relay
To configure an LC Technology ESP8266 Relay X2, use the following settings...
Set module to Generic (in module configuration and click save) Set GPIO0 and GPIO2 as Relay1 and Relay 2 (in module configuration and click save) Disable SerialLog (type seriallog 0 in the Tasmota console) Add the following rules typing in the Tasmota console:
Important finding: send "ready\r\n" (hex 72656164790a0d) required.
Rule1 on System#Boot do Backlog Baudrate 115200; SerialSend5 72656164790a0d endon on Power1#State=1 do SerialSend5 A00101A2 endon on Power1#State=0 do SerialSend5 A00100A1 endon on Power2#State=1 do SerialSend5 A00201A3 endon on Power2#State=0 do SerialSend5 A00200A2 endon
Enable the rule (type rule1 1 in the Tasmota console)
Power on the Relay module while pressing Button #1, only L1 on, then after "ready" -> L3 blinking, it is responsive to turn on/off commands.
Cmd: "rule1 ?" to verify the rule is ok.
SerialSend5 => 5 = send as hex. Data in serial response messages is encoded as hex strings Docs: https://tasmota.github.io/docs/Commands/#receiving-state-of-anything-that-triggers-switch-more-than-one-time
CP2102 USB-TTL module: works too. RX->TX, TX->RX.
console:
Backlog IPAddress1 192.168.18.201; IPAddress2 192.168.18.1; IPAddress3 255.255.255.0; IPAddress4 192.168.18.1
restart 1
/usr/bin/wget "http://192.168.18.201/cm?cmnd=Power2%20On" /usr/bin/wget "http://192.168.18.201/cm?cmnd=Power2%20Off"
