They practically give ESP32s away with an oil change, so you could call it done at that point, but I chose to use a QuinLED Dig-Quad (https://quinled.info/pre-assembled-quinled-dig-quad/) to make it easy to wire up and mount on the wall. That cost me about $60 shipped. And I added a MEAN WELL LRS-100-5 power supply for $20.
Finally for the laser-cut frames, I burned up about $30 of wood, and there's some minimal amount of 3D printer filament as well. Along with the incidental things like having to buy a spool of 3-conductor cable, connectors, etc.
So all together I'd guess it was around $300. A completely no-frills version could be maybe half that.
They practically give ESP32s away with an oil change, so you could call it done at that point, but I chose to use a QuinLED Dig-Quad (https://quinled.info/pre-assembled-quinled-dig-quad/) to make it easy to wire up and mount on the wall. That cost me about $60 shipped. And I added a MEAN WELL LRS-100-5 power supply for $20.
Finally for the laser-cut frames, I burned up about $30 of wood, and there's some minimal amount of 3D printer filament as well. Along with the incidental things like having to buy a spool of 3-conductor cable, connectors, etc.
So all together I'd guess it was around $300. A completely no-frills version could be maybe half that.