Subject:
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Re: Custom sensor current drain - use two sensor ports?
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Newsgroups:
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lugnet.robotics.rcx
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Date:
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Thu, 30 Jun 2005 11:53:22 GMT
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Viewed:
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4071 times
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In lugnet.robotics.rcx, Justin Fisher wrote:
> I'm building a custom active mindstorms sensor, but it requires 28mA to operate,
> while the sensor port only provides about 15mA. Any advice? (The mA requirements
> of the sensor cannot be halved - improvements may be possible, but it seems
> unlikely I could get it down to 15mA).
I take it all back. I'm so brilliant that I found a way to make a (rather large)
change to the circuitry that brought things under the limit. Ok, ok, forgive my
indulgent self-back-patting, but I'm pretty bouyant right now - everything is
working flawlessly on the breadboard and I'm over the moon - it works like a
light sensor now. In fact, I guess it is a light sensor, just a bit further up
the spectrum - I now have a Mindstorms geiger counter. :-D
Thanks for the suggestions Danny and Philippe - I did look into implementing
them, but then I had my little "breakthrough", which bypassed the problem.
(I think I'm going to sat up way past my bedtime now trying to build the circuit
into a Lego exterior before I fall asleep face first into the soldering iron :)
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Message has 3 Replies:
Message is in Reply To:
 | | Custom sensor current drain - use two sensor ports?
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| I'm building a custom active mindstorms sensor, but it requires 28mA to operate, while the sensor port only provides about 15mA. Any advice? (The mA requirements of the sensor cannot be halved - improvements may be possible, but it seems unlikely I (...) (19 years ago, 30-Jun-05, to lugnet.robotics.rcx)
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