Difference between revisions of "Extension Explorer 16"

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(→‎Formula)
(→‎LED's for crossroad)
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** average current : I = 20mA   
 
** average current : I = 20mA   
  
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* the datasheet of the orange LED (see pages 3) indicates that :  
+
* the datasheet of the orange LED (see pages 4 & 5) indicates that :  
 
** conduction voltage : VF = 1.9V  
 
** conduction voltage : VF = 1.9V  
 
** average current : I = 30mA   
 
** average current : I = 30mA   

Revision as of 00:38, 30 September 2014

Description

In French: Création d'une carte d'extension pour la carte Explorer (PROJET: Carte Explorer 16 & Exos sur les uC).

  • V1: un montage permettra de simuler un carrefour routier, composer de 4 feux (RGB)


in English: creation of one extansion board for the Explorer Board (see the links above)

  • V1: assembly will allow to simulate a crossroad (4 fires (RGB))

Digram - Schematic

Part Calculation of Electronics Digram

LED's for crossroad

  • the datasheet of the DSP implemented on the Explorer Board 16 (see pages 1 & 273) indicates that :
    • output current of I/O : I = 10mA
    • voltage I/O : VDD = 3.3V
  • the datasheet of the red LED (see pages 3) indicates that :
    • conduction voltage : VF = 1.8V
    • average current : I = 20mA
  • the datasheet of the orange LED (see pages 4 & 5) indicates that :
    • conduction voltage : VF = 1.9V
    • average current : I = 30mA

Formula

  • calculation of resistance RD \frac{U_r}{I} = \frac{VDD - U_{LR}}{I} = \frac{3.3V - 1.8V}{10mA} = 150 ohm
  • calculation of resistance RD \frac{U_r}{I} = \frac{VDD - U_{LR}}{I} = \frac{3.3V - 1.9V}{10mA} = 140 ohm

Layout

Components listing

Modification

Documentation

PDF FILE

required links

Contributor

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