Intex Salt Water Chlorine Generators (SWG)

You need SWG with 16Pin (TM1650) Chip on the Display Board. It will not work with the 18 Pin Pic. We work on it

For this project, original cable between display board and main board will now be from display board to ESP32 board. You'll need a new cable to connect ESP32 board to the main board. This way the ESP32 will be in the middle of every comunication. For the new cable I used a NEMA17 motor cable (the one that 3D printers use) as I had several ones at home, and one connector fits what I need, so only have to change the other connector from this cable.

For the circuit you'll need:

• ESP32
• Relay module
• Power supply, I used 5V, but you can use 3.3V instead (wiring is different!)
• 2x Female and 1x Male XH2.54 4pin connectors (they are the most similar I've found that fits original cable)
• Level shifter as the logic from ESP32 is 3.3V and the SWG logic is 5V.
• Fuse for the power supply (optional)
• NEMA17 cable (I used this because I had several ones at home, but you can use whatever you have or you can buy)

For the wiring, take into account the ESP32 pins:

• GPIO 19 -> SWG main board clock
• GPIO 18 -> SWG main board data
• GPIO 17 -> Display board clock
• GPIO 16 -> Display board data
• GPIO 2 -> Relay module control

PCB Layout https://github.com/jingsno/intex-swg-pcb-TM1650 (Change Relay pin from GPIO0 to GPIO2)

RestAPI

For the API to control the system there are some endpoints that you could check in the code. Basic API calls are the following:

• Control the machine POST http://ip_addr:8080/api/v1/intex/swg { "data": { "power": "{on|off|standby}" } }

• Reboot ESP POST http://ip_addr:8080/api/v1/intex/swg/reboot { "data": { "reboot": "yes" } }

• selfclean POST http://ip_addr:8080/api/v1/intex/swg/self_clean { "data": { "time": "{6|10|12}" } } not testet yet

• Get current status GET http://ip_addr:8080/api/v1/intex/swg/status

• Get current debug GET http://ip_addr:8080/api/v1/intex/swg/debug

OTA Update

• Enable OTA POST http://ip_addr:8080/api/v1/intex/swg/enableota { "data": { "enableota": "yes" } }

http://ip_addr:8080

Home Assistant integration.

NodeRed create the sensor and switches and send the Data from Restapi to MQTT

copy swg folder from www to have the Pictures Add nodered flow and change the ip for the SWG_ESP and take your Homeassistant and MQTT connection

1. Inject "Create Sensor Switch"
2. Inject "Activate MQTT sensor"

Home Assistant have now a new MQTT Device.

Now NodeRed ask every 30sec the esp

Take the content from the yaml to a new Manuell element.