g_hajdukiewicz

4 ms·

1. 1.▲
   by g_hajdukiewicz 10y ago

   Many thanks! It's always good to design your system like that. The same with software :) Makes it easier to maintain.
2. 2.▲
   by g_hajdukiewicz 10y ago

   We designed our own, simple ones having MCP23017 ( https://goo.gl/S4i9Gw ) as the GPIO expanders and some popular optocouplers to provide proper isolation level. I can't remember which exact part was chosen for the isola
3. 3.▲
   by g_hajdukiewicz 10y ago

   Hey, you're totally right. Actually we would normally use some embedded solution for that (preferably STM32 or ESP8266 if wireless was needed), however, in this case we were focusing on designing it in a way so that it's easy to m
4. 4.▲
   by g_hajdukiewicz 10y ago

   Thanks for asking! I can explain you how the lighting unit works since I was taking part in designing it (better than nothing :) ). Since we didn't have enough GPIOs on the Raspberry which is controlling the lights, we used a GPIO expa
5. 5.▲
   by g_hajdukiewicz 10y ago

   Hey! I was happy to be designing this beauty (and using it everyday in our office). It's nothing more than just a "stair switch" configuration, where one of the manual switches was substituted with a relay. So we have all SPD