Dimming module: develop or buy?

Question

Electronics

Hello!
Recently, I thought about a smart home, more precisely about the automatic control of light (electricity). I sort of quickly decided on the high-level part - I liked Openhub, and you can attach Mycroft to it.
When I started looking for a dimmer, an unpleasant problem arose - I did not find anything suitable. General problems of models on the market -
- high prices
- closed protocols, limited customization
- functionality at the level of a non-stealing user
For example:
Prices are raised even for aliexpress.
The innovative dimmer of the "Smart Home" - most likely, will not work due to the requirements of reliability, because. powered by capacitive mains leakage. I don’t really want to bathe with the reticle effect.
Dimmer Light Switch (WT03S) - it may be suitable, but limited ability to tweak the device.
In light of the above, the idea arose to create an open-source device for geeks that would provide a convenient API for controlling electrical loads. I roughly formulated the requirements for the device, and a set of features:
Requirements for the device:
1. High reliability
2. Low cost (say $ 20-30)
3. Easy programming
Features:
1. Three dimming modes (phase, cycle skip, and PWM)
2 .The ability to turn on / off the switch, as usual (without fixing for example)
3. Measurement of current and load power
4. Protection for excess current and temperature
Do you think that the development of this module will not be "reinventing the wheel"?
Perhaps such a module is already somewhere on the github, but I did not find it?
Would you be interested in such a module?

Answer 1

I join the issue!
I'm going to study the issue of smart home. At one time, I assembled a simple PWM module for myself (21 channels, 3xULN2003, ATmega16 - from a cannon to the sparrows!), The price tag there came out quite pleasant. Only I got confused about drilling and soldering it, almost a hundred holes, but this issue, I think, is solved by using SMD cases.