I have 50 led in series
I need to light only 3 or 4 leds in same time
i hope its help u.pasicr said:Hi for all, I need advice from college with experiences in led driving, I have 50 led in series and I need driver with pic micro for example, also I need to light only 3 or 4 leds in same time and this will be shifted, to get moving athom effect in elipse...
regards
Which of the following scenarion do you want to acheive ?pasicr said:I have 50 led in series [...] I need to light only 3 or 4 leds in same time and this will be shifted [...]
In this scenario, essentially, you need individual drive for each LED. I would recommend common anode* for all 50 LEDs instead of connecting them in series. Cathodes connected to a shift registers. I don't have the part number for the shift register on the top of my head. But I'm sure folks here can suggest specific parts.pasicr said:scenario light 1,2,3,4 then 2,3,4,5 then 3,4,5,6 etc
I use red 5mm led...
matbob said:Hi pasicr,
You could use 'Charlieplexing'. But the output intensity may not be appreciable. Also you need multiplexing and with 8 uC pins you can control almost 56 LEDs(individually).
We use cookies and similar technologies for the following purposes:
Do you accept cookies and these technologies?
We use cookies and similar technologies for the following purposes:
Do you accept cookies and these technologies?