Search found 76 matches

by Smoke_Maker
Sun Oct 02, 2011 6:13 pm
Forum: General Discussion
Topic: Starting a project, solar powered night light
Replies: 29
Views: 7760

Re: Starting a project, solar powered night light

To protect the battery I'm thinking of this http://www.linear.com/product/LTC4060 Standalone Linear NiMH/NiCd Fast Battery Charger and for the solar cell http://www.herbach.com/Merchant2/merchant.mv?Screen=PROD&Store_Code=HAR&Product_Code=TM91SED1882&Category_Code=SED Rated 10 VDC open circuit, 8 vo...
by Smoke_Maker
Sun Oct 02, 2011 10:16 am
Forum: General Discussion
Topic: Starting a project, solar powered night light
Replies: 29
Views: 7760

Re: Starting a project, solar powered night light

Here is a place to start, the simple solar yard light upgraded to 3.6V that will turn off at sunrise and on at dusk. Now I need to add battery protection. How about a ziner to stop over charge :idea: or should I use a comparator in the window detection mode??
Solar powered night light.GIF
Solar powered night light
by Smoke_Maker
Sun Oct 02, 2011 9:08 am
Forum: General Discussion
Topic: Reliable breadboard connections
Replies: 4
Views: 1704

Re: Reliable breadboard connections

For the bread board use I use the wire I cut off resistors and solder them to the thin wire to push them in to the bread board
by Smoke_Maker
Sun Oct 02, 2011 6:22 am
Forum: General Discussion
Topic: Starting a project, solar powered night light
Replies: 29
Views: 7760

Re: Starting a project

Thanks Ringo, when I get to charging I will keep that in mind and when I get to charging I sure could use your help. I now reiterate my previous suggestion. Find out what the objectives are. In other words, what is to be accomplished with the design. In other words, how much light, where, and for ho...
by Smoke_Maker
Sat Oct 01, 2011 7:59 pm
Forum: General Discussion
Topic: Starting a project, solar powered night light
Replies: 29
Views: 7760

Re: Starting a project

Thanks Hak, I found the LED I had and tested them in a dark room, one LED gives off a little more light than the 4W bulb, but the light beam is focused in a smaller area. Here is the data sheet. http://www.mpja.com/download/15415op.pdf These will be good for the first ones, but a wider viewing angle...
by Smoke_Maker
Fri Sep 30, 2011 10:47 am
Forum: General Discussion
Topic: Starting a project, solar powered night light
Replies: 29
Views: 7760

Re: Starting a project

3A seems like A LOT of current for a dozen or two of LEDs! :lol: You're right, the luminosity of LED and resistive lamps to current are different (this is good for me) I pulled this off the Internet Yahoo answers "The color and type determines the required voltage. This ranges from 1.8V for a certa...
by Smoke_Maker
Fri Sep 30, 2011 8:26 am
Forum: General Discussion
Topic: Starting a project, solar powered night light
Replies: 29
Views: 7760

Re: Starting a project

3 amps times 8 hours is 24 amp/hours. That isn't truly realistic though. For example, if you want no less than 30% discharge then you would need a ~72Ah battery. That's for 1 night's use. You've chosen lithium-ion or nickel metal hydride cell technology. A quick look at Digi-Key showed some 12V 3.2...
by Smoke_Maker
Thu Sep 29, 2011 5:20 pm
Forum: General Discussion
Topic: Starting a project, solar powered night light
Replies: 29
Views: 7760

Re: Starting a project

For starters, with the LED lamps you plan to use, determine the current needed to light them. Lets say 1.2V, 3A (3.2W). To keep that lamp bright for 8 hours you will need a battery with 24Ah, thats a pretty big battery. As for battery chemestry, a LiIon is probably smaller but probably more expensi...
by Smoke_Maker
Thu Sep 29, 2011 4:47 pm
Forum: General Discussion
Topic: Starting a project, solar powered night light
Replies: 29
Views: 7760

Re: Starting a project

Hmmm... is there something more about this application we should know? You say, "24 hour capacity in case of a cloudy day, no 110v back-up needed." Do you need a nightlight on a cloudy day? You can read the newspaper at 3AM with 12 LEDs. I was thinking this was a hallway/foyer/path to the bathroom-...
by Smoke_Maker
Wed Sep 28, 2011 7:32 pm
Forum: General Discussion
Topic: Starting a project, solar powered night light
Replies: 29
Views: 7760

Re: Starting a project

I'd stay right here. OK, so I will stay here to work out the project and then take it to the READERS PROJECT when it is finished. Specs. are in the works. I want this to be durable, long lasting, and trouble free, not a quick easy project. 12 lamps, make each one a individual unit, or 2 one unit, o...
by Smoke_Maker
Tue Sep 27, 2011 5:14 pm
Forum: General Discussion
Topic: Starting a project, solar powered night light
Replies: 29
Views: 7760

Starting a project, solar powered night light

I want to start a project but which area should I use for advise?? I have purchased my last wall plug-in night light :mad: What I want to build is a solar power low voltage LED night light. What do you say is this the right forum or what??
by Smoke_Maker
Sat Sep 24, 2011 7:38 am
Forum: General Discussion
Topic: wireless counter
Replies: 21
Views: 4287

Re: wireless counter

Now your cooking, another idea is to use a wireless weather monitor and if your good you could put you RPM into that signal.

http://www.scientificsales.com/Vantage- ... s-s/34.htm
by Smoke_Maker
Fri Sep 23, 2011 7:53 pm
Forum: General Discussion
Topic: wireless counter
Replies: 21
Views: 4287

Re: wireless counter

"It is slightly offset from the center line. I had the same idea but check and rechecked and it just doesn't work." Thats OK, a strip of reflective tape on the shaft should do it, now for the transmitter and receiver. How are the laws there you don't want to have some government track you down by st...
by Smoke_Maker
Fri Sep 23, 2011 5:00 pm
Forum: General Discussion
Topic: wireless counter
Replies: 21
Views: 4287

Re: wireless counter

jdboy3020, I am assuming that the compressor is in the top thats rotates, if so than the air line has a coupler that swivels. It's a shame the compressor is not stationary and the shaft comes down to turn the compressor. Is the shaft to the compressor in the center of the head that rotates? if so th...