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  • Controlling simple LED Bar Graph with Arduino

    Unfortunately I do not. I picked them up from Vetco and they didn't provide any data But I check the website and they have it there: https://vetco.net/products/12-led-bar-graph-module)I searched the provided supplier code without success. But the online Vetco info shows a picture with the LED lit by 6V with a 40 ohm resistor, so I'm guessing that is adequate.

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  • Controlling simple LED Bar Graph with Arduino

    Any suggestions as to correct resistor value for a 12LED graph?

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  • DrRadium commented on audreyobscura's instructable World's easiest silicone mold.5 months ago
    World's easiest silicone mold.

    Actually, you don't have to glaze it. SuperSeal from Smooth-on seals porous surfaces and is specifically made for this purpose. It comes off with warm water.https://www.smooth-on.com/product-line/superseal/

    The one part silicone that cures with moisture sticks to things, which is why it is used as a caulk. But cured two part silicones (tin or platinum) won't stick to any nonporous surface except the same type of silicone. While mold release will prolong the mold life; it is really only critical when casting silicone of the same type. Note that tin silicone inhibits cure of platinum silicones.

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  • Cheap and Easy Lab Agitator / Shaker (Great for PCBs too!)

    For the author or anyone else who made one: how long did the motor last in continuous use?

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  • DrRadium commented on Aperition's instructable Make A Candle From Cheese 5 months ago
    Make A Candle From Cheese

    I have used these as campfire starters on many occasions, and they work great. You don't even need to make the candle. The "handy cheese opening mechanism" works well enough to get the wax melting on on the tinder, where the tinder now starts to get coated and acts like a wick. I've always taken them with me when camping. Despite what the package says, in my experience, the wax wrapped cheese stays just fine for at least 5 days at moderate pacific northwest temperatures. Maybe not so much at higher temps but check out the comment from INSAYN regarding his babybel longevity experiments at: http://www.expeditionportal.com/forum/archive/ind...Specifically: "BabyBel Cheese Round Singles in wax coating (An assortment of flavors) I tested one of these by placing in the ...see more »I have used these as campfire starters on many occasions, and they work great. You don't even need to make the candle. The "handy cheese opening mechanism" works well enough to get the wax melting on on the tinder, where the tinder now starts to get coated and acts like a wick. I've always taken them with me when camping. Despite what the package says, in my experience, the wax wrapped cheese stays just fine for at least 5 days at moderate pacific northwest temperatures. Maybe not so much at higher temps but check out the comment from INSAYN regarding his babybel longevity experiments at: http://www.expeditionportal.com/forum/archive/ind...Specifically: "BabyBel Cheese Round Singles in wax coating (An assortment of flavors) I tested one of these by placing in the window sill facing South for nearly 3 weeks. House is usually 67º-70ºF and the window sill saw upwards of 85ºF. After sitting there all that time, I tried it and found no issue with the flavor, texture, or usefulness in eating or cooking with." Not all that surprising. Cheese was made as a way of storing milk before refrigeration. And this use really is a very practical survival technique as being able to start fires in survival situations can be critical.

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