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Project

Dimming Leds panel with PWM function

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Author: Philippe MARTIN

Last Updated: 2016-02-18

Package Version: 1.0.0.0

Category: Other Codes

Downloaded: 1682 times

Followed by: 1 user

License: MIT license  

Up/Down dimmer with PWM function - one push button used -
Short time PB pressed: ON / OFF function with memory -
Long time (>250 ms) PB pressed : UP / DOWN dimming function

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DOWNLOAD LINK RELATED COMPILER CONTAINS
mikroBasic PRO for PIC
  • lib
  • src
  • exa
  • hlp
  • hex
  • sch
  • pcb
  • doc

Project Blog

Run mode diagram

Run mode diagram

Explanations of run mode.

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Leds panel dimming board

Leds panel dimming board

PICPLC16V6 board with 18F4520 and leds panel

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Schematic Power command

Schematic Power command

Use one push button with opto-coupler on RA3 input on PICPLC16V6 board. RC1 output PWM mode. Take care: +5V power suppy for microcontroler and +12V to supply leds panel interfaced with MosFet transistor BUZ71

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PWM timing data

PWM timing data

Views of PWM timing data: f = 5kH and 1%, 50% and 100% duty cycle. Vgs and Vds voltage on BUZ71A mosfet transistor. Less than 0.15V loss on Drain-Source gates

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BUZ71A transistor - TO220 packaging

BUZ71A transistor - TO220 packaging

Some features and pins description on BUZ71A Power Mosfet transistor

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