Connect a LED with a battery and a resistor. The long leg of an LED is the positive, the anode. You could connect a LED directly to a battery without a resistor, but that probably wouldn’t last very long. The resistor acts as a load and limits the amount of current in the circuit. When […]
Buy a LM386, this chip has been around for ever, is cheap, plentiful and the recommended supply voltage is 4-12VDC.
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I see quite a lot of Crystal IS33 pressure calibrators from customers with broken or missing battery covers and so I thought I would try my hand at 3D printing since I’ve never done it before and the idea of it sounded VERY interesting to me. Precise measurement is very important when designing something so […]
Aperture f/16 use shutter speed of 1 over ISO on a bright sunny day, that’s the basic jist of the Sunny 16 Rule. Conditions Settings Sunny ISO 100 f/16 1/100s Slight Overcast ISO 100 f/11 1/100s Overcast ISO 100 f/8 1/100s Heavy Overcast ISO 100 f/5.6 1/100s Shade ISO 100 f/4 1/100s Back in the […]