Posted in General discussions where we can talk about "everything".. Right?
I'm in the beginning of my learningcurve but I built my first 4 mysensor nodes and there will sure be a lot more. Very briefly; my enviroment; raspberry pi with domoticz and 5 "zwave plus" units and a serial GW to MySensors and 4 nodes (motion, button, relays). It's overwhelming and exciting. Lego for adults.
My first step: Euphoria, when understanding that everything is possible.
Second step: Shopaholic! I bought a lot of different arduinos, radios, component and sensors. (btw; isn't it unbelievable that you can order stuff for 1 euro sent with free shipping from china to northern europe. I still don't understand it!?)
Third step: powersupply? casing? radiorange? mounting details? stability?
Now I start to think a little about safety – I don't want to burn down my house – and security:
Safety: How do I make my nodes as safe as possible (in an electrical sense)? My first nodes was powered by cheap asian-made USB-chargers, but how many didn't serve less than 5V? ..marked with 1A or 2A but giving me 0,5A (lack of quality, but cheap of course). Can I trust them or have anyone had some incident (like fire, short circuits, overheating) with these kind of cheap low-end products? Anyone who can share thoughts about WHAT to think about or even better; building hints/tips? (Yes, I ordered my first pack of power supply modules; http://www.ebay.com/itm/261985573055 )
Security: Thoughts in two directions;
a] Building guidelines for parts of the system that includes physical security, larm sensors, motion detectors, door sensors that are vital. Yes, I understand that ANY radiobased network could be taken down by radiojammers.. What approach should I have? "cabled hubs" (mySensors ethernet gw?) by wire controls/reads sensors. Maybe having a cabled ethernet as "back-bone" wiyh 3-4 gw/repeaternodes? Anyone who have smart ideas or building concepts? Maybe build a cabled ethernet backbone, but this wireless stuff feels som comfy..
b] I've read some posts about signing (e.g. https://www.mysensors.org/about/signing ). Does this extra complexity affect the stability/reliability? ..and whats next step? encrypted messages? certificates?
Share your thoughts..... ..if You want to..
Best regards from a true Newbie!