* V1: un montage permettra de simuler un carrefour routier, composer de 4 feux (RGB)
* V2: montage permettant d'allumer séquentiellement des leds pour afficher le nom de FIXME
* V1: assembly will allow to simulate a crossroad (4 fires (RGB))
* V2: assembly allowing to display sequentially the leds to screen FIXME
= Digram - Schematic =
File:Lettre F.jpg | Fixme Display - lettre F - Orcad
File:Lettre_I.jpg | Fixme Display - lettre I - Orcad
File:Lettre X.jpg | Fixme Display - lettre X - Orcad
File:Lettre M.jpg | Fixme Display - lettre M - Orcad
File:Lettre E.jpg | Fixme Display - lettre E - Orcad
</gallery>
R_{LED_R}=\frac{U_r}{I}=\frac{V_{DD}-U_{LR}}{I}=\frac{3.3V-1.8V}{10mA}
</math>
= ''' 150 ohm Ω '''
* power dispersed by the resistance P_R_LED_R :
<math>
R_{LED_O}=\frac{U_r}{I}=\frac{V_{DD}-U_{LO}}{I}=\frac{3.3V-1.9V}{10mA}
</math>
= ''' 140 ohm Ω'''
* power dispersed by the resistance P_R_LED_O :
<math>
R_{LED_G}=\frac{U_r}{I}=\frac{V_{DD} - U_{LG}}{I}=\frac{3.3V-2.2V}{10mA}
</math>
= ''' 110 ohm Ω '''
* power dispersed by the resistance P_R_LED_G :
<math>
RIN_{low} = \frac{VDD_{low}}{I_L} = \frac{0.66}{2u}
</math>
= ''' 330 kohmskΩ'''
* Resitor Pull-Up MAX :
R_{Pull-Up_{max}} = \frac{VDD - VDD_{low}}{I_L} = \frac{3.3 - 0.66}{2u}
</math>
= ''' 1.32 MohmsMΩ'''
''Remark'' : the resistor must be more less that the R_PULL-UP_max - usually, the value of 10kohm is using for the resistor pull-up.
== LEDS For DSIPLAY FIXME ==
=== Details arround the LED Segment ===''In French'' : pour cette partie du projet, le choix s'est porté sur des multi leds de type L-132CB, le but est que tous les segments verticaux s'allument en meme temps et tous les leds horizontales s'allume une après l'autre. Pour les segments verticaux, si on chaîne les 5 leds du segment (série), on obtient du 10V sur les 5 leds... donc il faut prévoir pour le montage une alimentation 12V DC qui tienne 1A au minimum. Pour les segments horizontaux, c'est qu'une led par segment qui sera alimenté -> 2V par led.
''IN English'': For this part of the project, the choice was carried on the multi LED L-132CB, the goal is that all vertical segment display in same time ans the horizontal leds display one after the others. For the vertical sgment, the leds will be chained in serial (5 leds -> 10V). For this assembly to provide for the power, a voltage of 12V. For the horizontal segment, there will have only 1 led supplied (2V).
to see more details, check the schematics part !!! === Datas === * U_POW = Vcc = 12V DC --> choice concerning the power supply of LED segments* U_LED = 2V DC --> voltage on once leds * U_SEG = 5*U_LED = 5*2V = 10V --> voltage on once segment * I_LED = 20mA --> current use by once led === Calculation === ==== Resistor in end line for vertical sgement ====if the segment is alone, the end line resistor is of (example each element of the X letter) : <math>R_{1Seg} = \frac{Vcc - U_{seg}}{I_{LED}} = \frac{12V - 10V}{20mA}</math>= '''100 Ω''' Power dissipated by the resistor Rseg: <math>P_{R_{1Seg}} = R_{1Seg} \cdot I_{Led}^2 = 100 \cdot (20mA)^2 </math>= '''40 mW''' The choice for the resistor(s) value is : '''100 Ω 1/4W''' if the segments are linked by two, the end line resistor is of (example for the F, I, M, E letters) : <math>R_{1Seg} = \frac{Vcc - U_{seg}}{I_{LED_{Seg1}} + I_{LED_{Seg2}}} = \frac{12V - 10V}{20mA + 20mA}</math>= '''50 Ω''' Power dissipated by the resistor Rseg: <math>P_{R_{1Seg}} = R_{1Seg} \cdot (2*I_{Led})^2 = 100 \cdot (40mA)^2 </math>= '''80 mW''' The choice for the resistor(s) value is : '''51 Ω 1/4W''' ==== Resistor in end line for horizontal sgement ====if the segment is alone, the end line resistor is of (example each element of the M letter) : <math>R_{1LED} = \frac{Vcc - U_{seg_{LED}}}{I_{LED}} = \frac{12V - 2V}{20mA}</math>= '''500 Ω''' Power dissipated by the resistor R_LED: <math>P_{R_{1LED}} = R_{1LED} \cdot I_{Led}^2 = 500 \cdot (20mA)^2 </math>= '''200 mW''' The choice for the resistor(s) value is : '''510 Ω 1/4W''' if the segments are linked by two, the end line resistor is of (example for the F letter) : <math>R_{LEDs} = \frac{Vcc - U_{LED}}{I_{LED1} + I_{LED2}} = \frac{12V - 2V}{20mA + 20mA}</math>= '''250 Ω''' Power dissipated by the resistor RLED_2: <math>P_{R_{LEDs}} = R_{LEDs} \cdot (2*I_{Led})^2 = 250 \cdot (40mA)^2 </math>= '''400 mW''' The choice for the resistor(s) value is : '''270 Ω 1/2W''' if the segments are linked by three, the end line resistor is of (example for the E letter) : <math>R_{LEDs} = \frac{Vcc - U_{LED}}{I_{LED1} + I_{LED2} + I_{LED3}} = \frac{12V - 2V}{20mA + 20mA +20mA}</math>= '''167 Ω''' Power dissipated by the resistor RLED_3: <math>P_{R_{LEDs}} = R_{LEDs} \cdot (3*I_{Led})^2 = 250 \cdot (60mA)^2 </math>= '''601,2 mW''' The choice for the resistor(s) value is : '''180 Ω 1W'''
= Layout =
== Cross Fire Part ==
{| class="BOM wikitable" style="text- Feux tricolor Partalign:center;"
|+ BOM for the Feux Tricolor
|-
== LED DISPLAY FIXME ==
A venir {| class="wikitable" style="text-align:center;" |+ BOM for the FIXME Display |- ! scope="col" | Designation ! scope="col" | Type de boitier ! scope="col" | Nb de composants ! scope="col" | Fournisseur ! scope="col" | Référence ! scope="col" | Prix |- | MULTI LEDS (5 led par boitier) L-132CB | 35mm x 6.1mm | 21 | Farnell | 1208841 | 3.75 CHF/pieces |- | DEMULTIPLEXEUR SIMPLE - CBT3251PW | TSSOP-16 | 4 | Farnell | 2445292 | 0.2 CHF/pieces |- | Transistor MOSFET - FDD3N40TM | TO-252AA | 29 | Farnell | 2453399 | 0.6 CHF/pieces |- | Connecteur BASSE TENSION - MJ-179PH | - | 1 | Farnell | 1737246 | 1.2 CHF/pieces |- | Condensateur SMD 100nF/16V - CC0805KRX7R7BB104 | 0805 | 4 | Farnell | 644160 | 0.45 CHF/10x pieces min |- | Resistance SMD 51o/1/4W - WR12X51R0FTL | 1206 | 5 | Farnell | 2502655 | 0.25 CHF/50x pieces min |- | Resistance SMD 270o/1/2W - ERJP6WF2700V | 0805 | 5 | Farnell | 2253894 | 0.70 CHF/5x pieces min |- | Resistance SMD 100o/1/4W - ERJP6WF2700V | 0805 | 4 | Farnell | 2502669 | 0.30 CHF/100x pieces min |- | Resistance SMD 510o/1/4W - WR08X5100FTL | 0805 | 10 | Farnell | 2502738 | 0.30 CHF/100x pieces min |- | Resistance SMD 180o/1W - ERJB1AF181U | 2010 | 5 | Farnell | 2293954RL | 0.45 CHF/150x pieces min |- | Diode 20V/2A - PMEG2010EA | SOD-323 | 1 | Farnell | 2319120 | 0.2 CHF |}
= Assembly =
* datasheet on DEMUX 1:8 -> NXP -> CBT3251 [[File:CBT3251.pdf]]
* datasheet on MOSFET Canal P -> Faishild -> FDD3N40 [[File:MOSFET_P_FDD3N40.pdf]]
* datasheet on MOSFET Canal P the LED Barre -> OPTO IMAGE -> L-132CB ou BA0520HR5A [[File:LED L-132CB.pdf]]* datasheet on Diode -> NXP -> PMEG2010EA,115 [[File:Diode.pdf]]
== required links ==