Hi there. Looking on different HA forums I more and more think about idea of designing my own product, because I can not find suitable device on the market. A kind of start-up.
I’m an experienced electronics developer and know, that it will take time and money to develop it, so it has to be interesting to community in order to start selling it. Otherwise it will not pay back my costs.
So what I want to implement - is a tiny TFT based wall panel. As a prototype you can look on this KNX Thermostat from Berker
The main characteristics of my device are:
- form factor as standard EU switch or socket, to fit in standard EU wall opening. The device itself most likely will be flat and the size will be same as standard insert for popular switching systems like Jung LS or CD 500 (70x70mm) or Gira 55 (55x55 mm), so that user could install it in standard frame.
- 2,5-3" fancy capacitive TFT Touchscreen
- Android OS, so that user could install it’s favourite GUI app - Imperihome, Dashpanel, iViewer, Habdroid etc. Off course you have to consider small screen size, when designing your GUI. But screen should be big enough to fit at least couple of virtual buttons.
- Connection - WiFi at first place. Then use your Android app to run Rest API or MQTT on top of it.
In future I might add Ethernet with PoE.
- Power Supply - microUSB connector on back wall. Use standard USB charger like Apple A1385. In future I might think about adding small battery and some kind of wall dock, so that user could take panel from the wall and use as remote control.
- No GPS, no Bluetooth, no cameras, no Mike, no speaker(use Alexa or Google Home for this). Just simple Android.
- maybe Temperature sensor.
- target price below 100€
As a function I see it as replacement for standard wall switches and Thermostats. Eg.
- light control, dimming
- Jalousie Control,
- Thermostat set-point adjustment
- all kind of simple one-click functions, scenes activation.
- It should be easy to integrate in any kind of home automation system
Just couple of example screens, you could have there (off-course they will be in colour) :
What do you think about such device? Would you buy this thing for your home automation? Is there something to add/remove?
I could create device based on ESP8266, STM32, Arduino and other platforms, which might be cheaper a bit, but Idea behind Android is that in this case user virtually doesn’t need any programming knowledge in order to program such switch.