ESP32 relay board and Nextion touch screen display
Budget: $30 – $250 AUD
I am looking to create a small, cost-effective project to control valves using a 4 channel ESP32 relay board and 3.5 inch Nextion touch screen display. I will be needing custom programming to accomplish this task. I hope to find a freelancer who is well-versed in both programming and electronics who can help bring my device to life. I have a tft file for the Nextion already prepared.
More details...
There are two valves to control with 4 relays. 1 channel will open valve A, another channel will close valve A, and then the remaining 2 channels will open and close valve B.
Valve A needs to be powered for 7 seconds to open it, and later powered for 7 seconds to close it. Valve B takes 5 seconds to open then 5 seconds to close.
There are 2 x two way buttons on the nextion. Each button will open and close one valve.
The screen also needs to display the time elapsed since each valve was last closed.
I would like the coding to trigger an audible alarm if either valve has not been closed for over 12 hours AND the ESP32 is also receiving power to a particular pin. This project is going to be installed in a car. When the car is running it will be sending power to this pin and I only want the audible alarm to go off when the car is running and its been over 12 hours since either valve has been closed
The touch screen tft file is attached. Feel free to make any changes you believe are necessary
Also attached is the ESP32 4 channel relay board I am using
More details...
There are two valves to control with 4 relays. 1 channel will open valve A, another channel will close valve A, and then the remaining 2 channels will open and close valve B.
Valve A needs to be powered for 7 seconds to open it, and later powered for 7 seconds to close it. Valve B takes 5 seconds to open then 5 seconds to close.
There are 2 x two way buttons on the nextion. Each button will open and close one valve.
The screen also needs to display the time elapsed since each valve was last closed.
I would like the coding to trigger an audible alarm if either valve has not been closed for over 12 hours AND the ESP32 is also receiving power to a particular pin. This project is going to be installed in a car. When the car is running it will be sending power to this pin and I only want the audible alarm to go off when the car is running and its been over 12 hours since either valve has been closed
The touch screen tft file is attached. Feel free to make any changes you believe are necessary
Also attached is the ESP32 4 channel relay board I am using