Require super tiny battery.
Looking for a battery or multiple batterys that will fit into a bic pen tube and still allow travel for wires. I require it to give me 3.3v at the same mah as rs232 standards. Its a project to build a super tiny self contained probe if youre wondering. Anways!
Thanks alot
''Bowser
Don't know what pen you are using exactly, but I have a regular pen here that measures .273 ID and the EverReady 364 cell is .267 dia.
Mike 2545
You're not going to find batteries that small that will meat your requirements. Batteries that small can barely put out any current, let alone the voltage and current requirements for RS232, at least not for more than about a minute.
Last edited by Sceadwian; 10th April 2009 at 08:58 PM.
"Because I be what I be. I would tell you what you want to know if I
could, mum, but I be a cat, and no cat anywhere ever gave anyone a
straight answer, har har."
i just thought maybe a few micro nimh batteries could pull it off
The inside of a bic pen is pretty tiny, not much room in there for anything. What are the running current requirements for your circuit? and what kind of run time to do you need? Considering you're using RS232 for communication why can't you also connect a power cable? Or use the handshake lines to sneak a little bit of power?
Last edited by Sceadwian; 10th April 2009 at 09:05 PM.
"Because I be what I be. I would tell you what you want to know if I
could, mum, but I be a cat, and no cat anywhere ever gave anyone a
straight answer, har har."
its a probe for retreiving the key data from an xbox 360 drive and im trying to contain it all in one package, i may produce these units to make a little bit of cash.
thats what im working on, see where the 5v comes from the molex? that should be 3.3v and im trying to supply that power without the use of an external power source or extra connectors.
So what do you need a battery for?
"Because I be what I be. I would tell you what you want to know if I
could, mum, but I be a cat, and no cat anywhere ever gave anyone a
straight answer, har har."
I have to assume you're talking about the current popular Bic Round Stik pen family, which has an inner diameter of about 6.5 mm. The smaller hearing aid batteries (520010, 520020) are 5.75 and 5.8 mm respectively.
so i dont have to connect it to molex or external power,,, but can rs supply that power needed?
can i stack hearing aid batteries into a cell or will it quickly be drained?do they make rechargeable hearing aid batteries?
A BR435 will probably fit inside any pen sized case you could imagine, but they are expensive.
You’d be better off powering it from the serial port or USB, since you are already connecting it to the computer.
You will also have to have a means to wire a common reference (ground) between the X-box and the probe monitor (DB-9 pin 5) for this to work.
Lefty
Measurement changes behavior
what do you mean a common ground?like a ground from the db9 to the grnd on the drive?why doesnt this schem have a common ground
Thanks
;colin
ps...sometimes i sound very stupid
Last edited by bowser22; 10th April 2009 at 10:35 PM.
"like a ground from the db9 to the grnd on the drive?"Originally Posted by bowser22
Yes, that is what is required.
"why doesnt this schem have a common ground"
I see a ground pin located in the picture of the board.
Lefty
Last edited by Leftyretro; 10th April 2009 at 10:40 PM.
Measurement changes behavior
Reply With Quote
