Hello,
I am looking to do something similar as mousepad's 10,000 leds in parallel but a bit less ambitious.
I'd like to flash 36 LED's, actually want to use a switch to flash them (like a blinking traffic light at 2am) with the other state being solid.
I'm actually looking for two circuits driving 36 leds, one for 2v red led, 20mA (although they are superbrights and rated as 30mA), and one for 3.8v blue led, 20mA (also superbrights rates as 30mA).
Configuring for 30mA is ok, but I'm reading 20mA is standard and what should be accounted for - but I'm not sure.
I have a 12v, 16amp power supply. The LED's will be about 3 feet apart on average.
If I understand correctly a 555 8-pin IC in astable mode will handle the blinking side of the project. Although 36 leds at 20mA is about 3/4 of an amp and the 555 needs help to power this?
Also, I'm afraid the power supply will damage the 555.
I'm looking for the most efficient circuit design to handle both the blinking and solid sides of the circuits. Any design assistance is greatly appreciated.
Frank
I am looking to do something similar as mousepad's 10,000 leds in parallel but a bit less ambitious.
I'd like to flash 36 LED's, actually want to use a switch to flash them (like a blinking traffic light at 2am) with the other state being solid.
I'm actually looking for two circuits driving 36 leds, one for 2v red led, 20mA (although they are superbrights and rated as 30mA), and one for 3.8v blue led, 20mA (also superbrights rates as 30mA).
Configuring for 30mA is ok, but I'm reading 20mA is standard and what should be accounted for - but I'm not sure.
I have a 12v, 16amp power supply. The LED's will be about 3 feet apart on average.
If I understand correctly a 555 8-pin IC in astable mode will handle the blinking side of the project. Although 36 leds at 20mA is about 3/4 of an amp and the 555 needs help to power this?
Also, I'm afraid the power supply will damage the 555.
I'm looking for the most efficient circuit design to handle both the blinking and solid sides of the circuits. Any design assistance is greatly appreciated.
Frank