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12-channel LED indicator




During MCU program debug, pins state control is required often. Most simple solution is LED array. This array can be also used in a variety of applications, such as LED bars, output channels monitor and so forth.

specifications
Channels - 12
Input current - 10 mA (TTL)
LEDs diameter - 3 mm
LEDs color - blue (red, green, yellow are available)
Dimensions - 80х20 мм


Schematic (both variants)


parts list
LEDs - 12
270 R 0,25 W resistor - 12


PCB (parts side) [download 12_led_c.cdr]


* For laser printed PCB template, flip image horizontally or vertically


PCB (copper side)


Links

 

проектирование, изготовление, монтаж

PCB