Recent content by David Emiley

These are adjustable stepdowns that take up to 12v input and then output is selectable in .5v steps using dip switches. Thus AFTER running the drop, I can set the source voltage for each line to exactly what I need to produce 5v output on the drop end. All adjustments done within the wiring...

I've had cheap USB cables that drop the voltage down to 4.5v, and devices still accept them. I suppose an easy solution would be to install a stepdown at the source on every line (I've got tons of these left over from when I was using 18650 3.7v batteries to run AA/AAA devices), run each drop...

5.5v 500mA on each pair, wired in parallel for a potential output of 1 amp to a single USB power port. Thus the port could in theory be used for charging, though my intention is to use them to power a device. I intend to off-the-shelf brick PSUs as the power source, which have single use...

Only 2 drops are at 50'. The NEXX APs run on 500mA. 5.5v 500mA => 4.86v at 50'. 2.75 watts in, 2.43 watts out. Negligible. Monthly energy lost < .5kWh = 6 cents. The other drops are 20'-30'. So worst case scenario, I lose 10 cents of energy a month.

My final plan is to run two CAT5e cables. First cable will be for Gigabit Ethernet. Second cable, 2 pairs will be for 2 phone lines, and the other 2 pairs will each carry 5v DC and will be wired in parallel at source and destination. Start at 5v 500mA on each pair, then increase to 5.5v 1A if...

The entire spectrum belongs to the public, and public can make use of any part of the spectrum, so long as that use does not interfere with licensed use. The "vans" are only used to track down known interfering signals, not as a policing patrol. My channel 14 network is an internal mesh within...

Think I will probably go with PoE and spring for $20 drop boxes that split it into ethernet and 2 usb ports, though that means I'll need another panel for the phone jack :| NEXX APs are the way to go though, as 1. They run OpenWRT, 2. They have a built in USB NAS, and 3. You can run a channel...

Not all of the jack drops have AC near them, so I want there to be USB power on hand. Also, one of my plans is to install USB powered wireless access points at each drop, specifically NEXX WT3020F's, which are OpenWRT capable and offer wired, wireless, and NAS all in the size of a cigarette pack.

The plan is 5v 1a, up to 5.5v 3.1a, but as I doubt there are extant technical recommendations for this, I figured I would use the official recommendations for 110v AC as a guideline.

A good point here is that buying cable in bulk, CAT5e might actually be CHEAPER than CAT3 which is used less these days.

I've just moved into a new home (new for me, it was built in 1953). The phone wiring is crap (some of it fabric coated) and my plan is to rip it all out and replace it with CAT6 and CAT3 for gigabit Ethernet and 2-line telephone (which I won't use and maybe no one ever will, but I believe in...