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Figure 1: Diagram of the circuit flash LED and components list. I had a high brightness LEDs, such as the one you use in assembling EN...
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Figure 1: Diagram of the circuit without power transformer and component list. Here's a good time that I manage to get the low vo...
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I have a small company whose premises consist of two long wings of the building and everything is served by three entries spread: Well ...
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After decades of seeing projects and circuits using ever increasingly complex integrated circuits, I yearn for simpler times. As a teenager,... -
This LED board displays a maximum of 46 characters scrolling speed is easily adjustable using buttons. It operates independently and all ope...
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Inserted into a set of closed circuit television (CCTV), or simply connected to a mini-CCD camera, this device allows to inexpensively det... -
If you're a special lighting for your party or simply close your meal? A candle illuminates the interior decor without risking to b...
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Figure 1: Diagram of quartz tester whose core is less than 1 MHz. You need to use this tester, a digital frequency meter (ELM has pub...
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Figure 1: Diagram of the detector of magnetic material. If you approach an object's magnetic core of Ferroxcube choke L1, the LED li...
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It's a small UHF radio receiver that receives the signal from the transmitter (for the latter see previous story) as they are close, eve...