Hello all,
I am trying to assemble a serie of LED strips for a Starmap I am building. The problem is I don't know enough about electronics to design the circuit, I can solder and assemble if I have the schematic in front of me.
I am not sure what kind of information is required so I'll try to give as much as I can :
- I need to have 94 LEDs
- 87 3mm LEDs : Working voltage:3.0~4V, Working current: <= 20mA
- 7 5mm LEDs but the specs are unkown
- It can be in different strips
- Would like to use a potentiometer to bring the lights down if it's too bright (maybe two if the 3mm have a different brightness than the 5mm ones, if possible)
- I have a 24V DC 500mA power source but can change if it's not enough
- I don't know where I should put to use the resistors (I have 100, 1K, 4,7K, 10K, 47K, 100K, 1M, can buy more if needed)
- Does it require anything else ? Like a transistor (I have triode BC548 0.1A /30V NPN power transistor TO-92) or so ?
Thanks a lot
Gaetan
I am trying to assemble a serie of LED strips for a Starmap I am building. The problem is I don't know enough about electronics to design the circuit, I can solder and assemble if I have the schematic in front of me.
I am not sure what kind of information is required so I'll try to give as much as I can :
- I need to have 94 LEDs
- 87 3mm LEDs : Working voltage:3.0~4V, Working current: <= 20mA
- 7 5mm LEDs but the specs are unkown
- It can be in different strips
- Would like to use a potentiometer to bring the lights down if it's too bright (maybe two if the 3mm have a different brightness than the 5mm ones, if possible)
- I have a 24V DC 500mA power source but can change if it's not enough
- I don't know where I should put to use the resistors (I have 100, 1K, 4,7K, 10K, 47K, 100K, 1M, can buy more if needed)
- Does it require anything else ? Like a transistor (I have triode BC548 0.1A /30V NPN power transistor TO-92) or so ?
Thanks a lot
Gaetan