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2 days ago
Andrew Plumb
commented on a projectJust had another thought. If you get the digital voltage control and control via USB then add some current sensing (for constant-current applications), this little box could be used for driving laser diodes and/or recharging small batteries across a broad range of chemistries.
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4 days ago
Andrew Plumb
commented on a projectAh, I see. You're using the R8C/2K2L variant, not the R8C/3xK or R8C/3xU that have USB support. The limit of my MCP4018-specific knowledge is that it's used to set the stepper driver reference levels of the MakerBot MightyBoard electronics (used in the latest Replicator machine) - see http://www.thingiverse.com/thing:16058
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4 days ago
Andrew Plumb
commented on a project(...and by 5.5V I really meant 5.0V)
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4 days ago
Andrew Plumb
commented on a projectJust to confirm - I see in the current schematic that you have the USB D+/- hooked up to the R8C - does the firmware go through a proper enumeration process to pull 500mA instead of the 100mA default? Second Q/long-shot request: Have you considered replacing RV1 with a digital pot (e.g. Microchip MCP4018 - http://www.microchip.com/wwwproducts/Devices.aspx?dDocName=en540385) and using a quad-encoded "mouse wheel" or capacitive swipe zone for manual intervention? That would open up some options for Really Useful Features like built-in supply ramping and USB-settable/controllable interface. Great project! I've put myself down for an international 4-pack (aka Canada) so I can have 1.8V, 2.5V, 3.3V and 5.5V going all at once. ;-)
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4 days ago
Andrew Plumb
backed a project
USB Based Variable Power Supply For Small Projects by ETONNET LLC
Power your circuit board when and where you need, by using USB power you already have with you.
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31% funded $4,345 pledged
- 112 backers
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on April 13
Andrew Plumb
backed a project
Pebble: E-Paper Watch for iPhone and Android by Pebble Technology
Pebble is a customizable watch. Download new watchfaces, use sports and fitness apps, get notifications from your phone.
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10,266% funded $10,266,845 pledged
- 68,929 backers
- Funded May 18, 2012
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on June 14, 2011
Andrew Plumb
backed a project
Pants Interface: A Wireless Wearable Controller by rachel lyra hospodar
Cuddle up to your console! These wearable soft-circuit buttons are kicking off a revolution in the way we interface with our machines.
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111% funded $4,590 pledged
- 59 backers
- Funded Jun 22, 2011
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on April 13, 2011
Andrew Plumb
backed a project
Carbon Zero: A Short Tour of Your City's Future by Alex Steffen
An experiment in crowd-funded fast publishing: a new book on carbon neutral cities we'll write, design+ publish in the next 3 weeks!
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188% funded $18,861 pledged
- 329 backers
- Funded Apr 14, 2011
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on April 11, 2011
Andrew Plumb
backed a project
Once Upon a Time by Larry Moss and Kelly Cheatle
Airigami artists Larry Moss and Kelly Cheatle are turning their incredible and unique art into illustrated children's books.
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101% funded $6,060 pledged
- 92 backers
- Funded May 06, 2011
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on February 4, 2011
Andrew Plumb
backed a project
Haptica Braille Watch by David Chavez
Haptica™ is a Braille watch that allows a blind person to check the time quickly and accurately without an audible disruption.
Funding Unsuccessful (03/04/2011)
Andrew Plumb
Ottawa, Canada
Andrew Plumb joined Kickstarter on October 01, 2009
