Circuit Diagram

Sonic Output Indicator 2

Published:2013/7/3 2:38:00 Author:muriel | Keyword: Sonic Output Indicator

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Sonic Output Indicator

Published:2013/7/3 2:37:00 Author:muriel | Keyword: Sonic Output Indicator

have been having fun linking a hexcore to Wilf's BEAM sound effects circuit--the two influence each other and make a most interesting mix of sounds. That got me interested in having sounds as output indicators, where we customarily use LEDs. I'm not entirely happy with it, as it runs at 80 mA even when it's quiet (the 6-Nv ladder [some people call this a 'spinal cord'?] uses 34 mA by itself) and it makes some pretty raspy square-wave type beeps, but it DOES work. I am always happy when I design even more-or-less works! 8^D Don't ask me *how* it works, I'm not there yet. I did discover that the diodes (1N418 type) are needed to keep the sound oscillator from resetting the process in the spinal cord. I also found that I couldn't use the last Nv in the ladder to hook to a sound or it sent the ladder into a frenzy, don't know why though. You can tell where I'm headed--a noisy bot that chirps and chortles and whistles and snorts as it goes about its life. What I need is something of the cheerful whistles and warbles of Wilf's sound effects that will turn on in response to a Nv output, and remain quiet otherwise, without eating current. (I don't ask for much!)   (View)

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Wilf's Bird

Published:2013/7/3 2:37:00 Author:muriel | Keyword: Wilf's Bird

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Charge pump circuits

Published:2013/7/3 2:36:00 Author:muriel | Keyword: Charge pump circuits

A charge pump uses arrays of capacitors to increase voltage in a circuit. In this way, you can drive higher voltage loads from logic voltages of 3 - 5 volts. Wilf has posted a number of interesting charge pump designs on the (formerly eGroups, now ) Yahoo BEAM group list: This is a simple, multi-stage design -- all you need is a bicore, 3 volts, and a bunch of 10 uF capacitors...   (View)

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The "Miller popper"

Published:2013/7/3 2:35:00 Author:muriel | Keyword: The "Miller popper"

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The "FRED" popper

Published:2013/7/3 2:35:00 Author:muriel | Keyword: The "FRED" popper

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74*240-based photopoppers 6

Published:2013/7/3 2:34:00 Author:muriel | Keyword: 74*240-based photopoppers

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74*240-based photopoppers 5

Published:2013/7/3 2:34:00 Author:muriel | Keyword: 74*240-based photopoppers

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74*240-based photopoppers 4

Published:2013/7/3 2:33:00 Author:muriel | Keyword: 74*240-based photopoppers

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74*240-based photopoppers 3

Published:2013/7/3 2:33:00 Author:muriel | Keyword: 74*240-based photopoppers

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74*240-based photopoppers 2

Published:2013/7/3 2:32:00 Author:muriel | Keyword: 74*240-based photopoppers

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74*240-based photopoppers

Published:2013/7/3 2:32:00 Author:muriel | Keyword: 74*240-based photopoppers

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74*14-based photopoppers

Published:2013/7/3 2:32:00 Author:muriel | Keyword: 74*14-based photopoppers

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555-based photopoppers 2

Published:2013/7/3 2:31:00 Author:muriel | Keyword: 555-based photopoppers

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555-based photopoppers

Published:2013/7/3 2:30:00 Author:muriel | Keyword: 555-based photopoppers

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1381-based photopopper with touch sensors

Published:2013/7/3 2:30:00 Author:muriel | Keyword: 1381-based photopopper , touch sensors

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Basic 1381-based photopopper

Published:2013/7/3 2:30:00 Author:muriel | Keyword: Basic 1381-based photopopper

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BEAM head circuits

Published:2013/7/3 2:29:00 Author:muriel | Keyword: BEAM head circuits

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BEAM pummer circuits

Published:2013/7/3 2:28:00 Author:muriel | Keyword: BEAM pummer circuits

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Field (electric, capacitance) sensors

Published:2013/7/3 2:28:00 Author:muriel | Keyword: Field (electric, capacitance) sensors

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