I recently bought a kit that includes a couple of linear actuators, a power supply, a control box, and a remote. Currently, the actuators can only be operated using the included remote.
I’m considering expanding the system to include both manual and Wi-Fi control via an ESP32. I found this helpful article: https://www.progressiveautomations.com/blogs/how-to/how-to-use-relays-to-control-linear-actuators. The guide seems perfect if I wanted to completely replace the RF receiver and integrate the microcontroller instead.
However, I’d like to keep the original remote functionality while also adding ESP32-based control. To achieve this, I came up with the following modified connection diagram (apologies for the lack of a proper schematic):
Now, I believe there’s a significant issue with this setup: if either control method activates one of the relays, the power supply could get shorted.
Here’s my question: can I use diodes to prevent current from flowing back into the other control section? Would this approach be feasible? I’ve checked some datasheets, and since the power supply is rated for 2A, I was thinking of using 1N5822 diodes. Would these work if properly placed?
Thanks for your help!