SV: SV: [basicstamps] Low Voltage Stamps?
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Posts: 46,084
Greetings!
Tracy allen wrote:
>> The OEM version have a big flaw in my case; it's TOO BIG...
>> Is it possible to modify the ordinary BS1?
>> (It arrived yesterday. Now, if only the rest of the parts could
> show up :-)
> I didn't mean the OEM module, rather, the BS1 interpreter chip.
> You would have to add your own circuit board and the other required
> parts. It could be pretty small in surface mount. With a 3 volt
> lithium cell, you might not need a voltage regulator, but watch out
> for the programming pins from the PC at 5 volts.
The programming pins isn't any problem.
It's just a question of either switching in another regulator, or using
voltage dividers and driver transistors to equal the difference.
(Or maybe there's a IC that I can use)
> I don't see any easy way to modify the surface mount BS1-IC module
> for operation at 3 volts. At the very least you would have to hack
> out the voltage regulator and the reset chip.
I'm going fot the smallest possible solution, so I'll look at replacing the
chips. (I think my soldering iron is up to the task :-)
I'm pretty certain that I can't make a smaller PCB, so the OEM will not be
the solution.
:-)
Trygve
Tracy allen wrote:
>> The OEM version have a big flaw in my case; it's TOO BIG...
>> Is it possible to modify the ordinary BS1?
>> (It arrived yesterday. Now, if only the rest of the parts could
> show up :-)
> I didn't mean the OEM module, rather, the BS1 interpreter chip.
> You would have to add your own circuit board and the other required
> parts. It could be pretty small in surface mount. With a 3 volt
> lithium cell, you might not need a voltage regulator, but watch out
> for the programming pins from the PC at 5 volts.
The programming pins isn't any problem.
It's just a question of either switching in another regulator, or using
voltage dividers and driver transistors to equal the difference.
(Or maybe there's a IC that I can use)
> I don't see any easy way to modify the surface mount BS1-IC module
> for operation at 3 volts. At the very least you would have to hack
> out the voltage regulator and the reset chip.
I'm going fot the smallest possible solution, so I'll look at replacing the
chips. (I think my soldering iron is up to the task :-)
I'm pretty certain that I can't make a smaller PCB, so the OEM will not be
the solution.
:-)
Trygve