=== Formula ===
* calculation of resistance R_LED_R :
<math>
R_{LEDRLED_R} = \sum_frac{nU_r}{I}=0\frac{VDD-U_{LR}^}{I}=\infty a_n x^nfrac{3.3V-1.8V}{10mA}
</math>
= ''' 150 ohm '''* power dispersed by the resistance P_R_LED_R :
<math>
\sum_frac{R_{n=1LED_R}^{+\infty2}\frac{1}{n^2I}=\frac{\pi150^{2}}{610mA}.
</math>
= \frac{U_r}{I} = \frac{VDD - U_{LR}}{I} = \frac{3.3V - 1.8V}{10mA} <math>0</math> = ''' 150 ohm '''* power dispersed by the resistance P_R_LED_R :<code>$<math>\frac{R_LED_R^{2}}{I} = \frac{150 o ^{2}}{10mA}</math> = ''' 15 mW ''' $</code>
* calculation of resistance R_LED_O :
<code>$<math>\frac{U_r}{I} = \frac{VDD - U_{LO}}{I} = \frac{3.3V - 1.9V}{10mA}</math> = ''' 140 ohm ''' $</code>
* power dispersed by the resistance P_R_LED_O :
<code>$<math>\frac{R_LED_O^{2}}{I} = \frac{140 o ^{2}}{10mA}</math> = ''' 14 mW ''' $</code>
* calculation of resistance R_LED_G :
<code>$<math>\frac{U_r}{I} = \frac{VDD - U_{LG}}{I} = \frac{3.3V - 2.2V}{10mA}</math> = ''' 110 ohm '''$</code>
* power dispersed by the resistance P_R_LED_G :
<code>$<math>\frac{R_LED_G^{2}}{I} = \frac{110 o ^{2}}{10mA}</math> = ''' 11 mW '''$</code>
= Layout =