Greetings to all,
As threatened/promised in a previous post, I've completed making a long-life MS14A. I have a high-traffic area. The
'AAA' batts don't last but a couple months; especially in the South FL heat. I attached an MS14A to a single-gang
plastic electrical box and embedded a double-C batt holder inside the electrical box. The pair of C batteries should last
quite some time. Further, to avoid having to dismount and reprogram, I included a barrel-type connector on the electrical
box so I can temporarily plug in a 'AA' pack when swapping the 'C' cells. Extreme you say... absolutely.
The electrical box is mounted under the soffit of the house looking outward and is shaded from direct sunlight. The ‘C’ batteries will likely die from shelf-life limits before the MS14 can even drain ‘em.
I've attached a pict. Apologies to whomever will have to edit; if it's even worth it.
MS14 and Electrical box:
1) Drilled holes in box just missing the 'C' battery holder to mount the MS14A. Screwed the MS14 in place. Also two holes in top of box for mounting to soffit using wood screws. Hacksawed the topside mounting tabs off flush with box.
2) Drilled a center hole, about .25" to allow for passing the 'C' holder wires and the barrel connector wires.
This hole went from inside the electrical box straight through the MS14 into his battery compartment. Dead Center.
3) Broke out bottom tab of electrical box and slightly machined to fit the barrel connector socket (female).
4) Fastened barrel connector socket with the tiny screws that came with it. Had to drill micro holes.
5) Soldered 4" lengths of red/positive and black/negative leads to the tabs on the barrel socket. Observe polarity! Positive tip standard.
6) Velcro strip to 'C' holder and inside of electrical box (allows for easy dismount for changing batts)
7) Joined the black negative leads from 'C' holder and barrel socket (twist and solder) leaving 3/8" exposed
8.) Repeated for red positive leads
9) Fed both sets of leads through the .25" hole (from inside the box) into the battery compartment of the MS14A
10) Bent the positive and negative leads at a 90 deg angle about halfway from the tips
11) Hooked the bent positive into the positive spring of the MS14. Soldered (took quite nicely)
12) Repeat for the negative lead but obviously to the negative spring of the MS14.
13) Carefully placed a ty-wrap around the cluster of wires inside the electrical box (strain relief)
14) Placed the empty 'C' cell tray inside the electrical box for now.
Done
'AA' Battery Holder – The “No Loss Power Cube”
1) Soldered both positive and negative leads from the AA batt holder to the matching barrel connector (male) tabs. Don’t forget to watch your polarity! And don't forget to slip on the barrel connector's screw-on housing before soldering.
Done.
Testing:
Insert two AA batteries into the “No Loss..” holder. I use NiMH 2700 mAH batts.
Check, using a voltmeter, the voltage and polarity of the barrel connector.
Insert the barrel connector into the barrel socket on the MS14 box.
Watch the MS14's LED. It should blink. Press his buttons and watch him work.
Disconnect the 'AA' battery holder.
Insert two 'C' batteries in the MS14 battery holder.
Watch the MS14's LED. Yes, it should blink....
Change his HC/UC & timout to the desired settings.
Secure the MS14's battery compartment cover.
Have a nice break from changing batts for a while
Before you place the package in service, dab a bead of silicone in the wiring hole to prevent water damage…
When you think the 'C' batteries are finally dying (sometime before 2013), simply put two good 'AA' batteries in the
little 'no loss' power cube we just created, plug it into the MS14 electrical box's barrel connector, change out the
'C' batteries with fresh ones, and finally, disconnect the 'no loss' power cube.
The HC/UC should remain the same.
Yes, you'll void the warranty associated with the MS14A by drilling a hole in his case and soldering wires to his springs.
Yes, you can leave that cottage knowing your MS14A will be powered while you're away.
Yes, the new range of the modified MS14A is somewhat crippled since the 'C' batteries will likely stand between his
antenna and your X10 RF receiver.
Yes, you’ll still lose the HC/UC if the primary ‘C’ batteries are left to die.
I moved my MS14 'thing' across the street (60' away from my house) and it still phoned home. In fairness, I do have
the V572RF32 listening albeit through a metal garage door, one concrete wall, and one interior wall. But it worked !!!
Time will tell, but I think this wierdness will work great for me. Hope it helps others.
Edit After Posting:
You could mount the MS14 in an inverted position to expose the antenna. Likely get better transmit results.
I do have picts from other angles. Just couldn't fit 'em in this posting.