Printed circuit board layout pcb design effects with LEDs been a good practice to work in the dark when used with an ultra bright LEDs looks very nice. Atmel AT90S2313 64 LEDs instead of creating Propeller microcontroller TINY2313 BASCOM-AVR 1.11.9.1 prepared with available software sprint pcb layout drawing and drawing spline scheme has the source code.
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Published: 2011/06/13 Tags: avr project, led projects, microcontroller projects
20 Led VU Meter Circuit KA2281
KA2281 previously with various vu meter circuit I made , but all mono circuit stereo manufacturer has two channels has been a challenge but in the end a bit of trouble in the scheme worked beautifully 🙂
Original diagram 15, 16 pins between the 50k resistor connected in this way the circuit full does not work for an additional 15 numbered pin- 56k resistor 2 to pin connects seamlessly with all channels running ka2281 outputs 560 ohm resistor on the LED connecting optional 470 ohms can be used but lower values ​​of the LEDs more disrupt the flow can lead to integrated pull . Mp4 audio inputs with 12v circuit works , cd player, pc etc. . resources , such as low power amp can be connected directly connected to the output does not
KA2281 gives mono output for the 10 LEDs 20 LEDs hooked ikÅŸerl was fine ring-shaped LED placement sequencing also be mounted on a panel with the template I gave much better results if you give