Recent content by LabPaddy

For sensors, it's a low impedance circuit, and filtered. I would expect it takes massive amounts of current to be induced to trigger the alarm circuit. A few millivolts here and there won't trip it.   The keypad lines are RS485, which is differential, so any noise get induced on both wires, and...

Windows 7 with a Haswell CPU will be supported till 2020. Newer procs (Skylake) will lose W7/W8 support next year, because Microsoft is doing whatever they can to get people into W10 for some reason.    Nothing wrong with Win 7.

Just received my Particle Electron.  Has 3g data for $2.99/mo  plan on at&t or T-Mobile. Couple of months free. Might be a good fit. 1MB/mo should cover a remote command.

Gee, another security flaw in cheap Asian hardware? I try not to expose anything to the Internet that I don't trust. Getting ready to put all my internet automation devices  on a separate router, ala GRC "3 Dumb Routers" or a PFSENSE router because there are few devices I trust on the inside of...

Digi Xtend 900mhz, rock solid RF. Might be beyond your budget. Look at their XBEE PRO, XA-A14-CS2P. I've used their XBEE Pro modules for years,  they work well.  Low latency, configurable with many options 

No monkey business, just some ohms law. EOLR circuit on my Vista 20P is nothing more than a voltage divider circuit into a comparator. I've used this to run a single PIR into 2 partitions for years, no issues.  The circuit can't see resistance values. It sees voltage, which doesn't fluctuate...

I have sonos Connect Amps hardwired in my closet,  running to zones in 3 rooms now, 3 more planned for this winter, as it is the best time for attic work. No wall controls needed, rip them out,  jump the wires in the wall and patch it up.

They have been rock solid. No reboots since installation. I find that I rarely use the app and still use the switch. I can turn on off all lights from one switch using 2 finger touch, which is nice. They are set to a schedule, works every time.              

In wiring 1 sensor to 2 zones, you will need to add a second eol resistor in parallel, or use half the resistance on a single EOL resistor.

My UBE Kickstarter  dimmers finally arrived after being delayed for months on end. I held off on other technologies while waiting for these to arrive, so I don't have any lighting automation. Long ago I did receive my Almond+, another Kickstarter, which is a router with home automation features...

Seems like a good plan. 100% good? You always find stuff to wire. For example, I have a TV in my kitchen. Now I want to hook up my TV to my kitchen ceiling speakers (Sonos). So I'm going to run audio from TV to closet where the Sonos Connect Amps live. That run could be Toslink or audio over...

Minimize the loop area to reduce rf induction.

Yes on the splice. Not sure about the rf induction claim. Typically you twist wire pairs to

Not true. Fatigue cycles cause the failure, not duration of loading.

I'm looking to detect cars and people walking up to the house.