The circuit uses an LDR (Light Dependent Resistor) as a light sensor, which, in simple terms, is a resistor whose value increases in darkness and decreases in the presence of light. Then it uses one transistor to detect the light, and another to drive the relay. When light falls on the...
Pressure Pad Sensor The pressure pad is the most important part of our circuit, as it won’t work without it in use. I made use of a FlexiForce pressure pad sensor, but you’re able to use cheaper alternatives. The FlexiForce sensor resistance will be near-infinite when you’re applying...
To build this LED-LDR opto-coupler, you can use any standard 20-milliampere, 5-mm type LED; the color of the LED does not matter. The LDR can also be any standard 5-mm-type LDR. Next, you just have to insert the LED from one side of the tube and the LDR from the other side ...
4. Now, implement the ISR function. Make a function and name it the same as the second argument ofattachInterrupt()function. To make the interrupt work properly, you need to remove the debounce problem of the pushbutton using millis or micros function and by adjusting ...
Now that you know what each pin does, we will now explain how the chip works. So, as explained, we have to give power to the chip in order for it to work. Once we have power to the chip, the next thing we must do is supply the op amp with 2 inputs for comparison, the 2 ...
In this brief tutorial I have explained how to design a customized UPS circuit at home using ordinary components such as a few NAND ICs and a some relays.
Since I have a 10mm lens and a 600D (1.6x crop sensor), I need to shoot every 40º horizontally (9 angles) to capture everything with a decent overlap, and do this for 3 different vertical angles (+45º, 0º, -45º), totalling 27 different angles. ...
Since I have a 10mm lens and a 600D (1.6x crop sensor), I need to shoot every 40º horizontally (9 angles) to capture everything with a decent overlap, and do this for 3 different vertical angles (+45º, 0º, -45º), totalling 27 different angles. ...
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