Hi,
First of all electronics are not my thing, biology or networking and I am at home, but apart from distance memories from GCSE's I am coming back to electronics blind and would really appreciate some help.
I have printed out a rocket on a 3D printer and now would like to place some LED's inside to illuminate it. 3 of these will be static blue, and two will flash yellow and red alternatively (pretend flames from motor).
I want to run it from 2 X 1.5V AA batteries as I already have some 2.9v blue LED's (10ma). I thought 2X AA would work OK
First of all I tried to cacluate what resistors I should use and it worked out at 12ohms, is this correct do i need to put a resistor in? And in parallel I would need one resister per LED. So I think this bit is OK.
Next I want to have the red and yellow LED flash alternatively but quite rapidly so it flickers more than an on off effect. What is a good circuit to use to achieve this, the words "flip flop" pop to mind but I am not sure this is the best method.
I have drawn up a very basic first attempt, (with out the oscillator part which would run LED's 4 and 5. The idea would be that when the circuit is turned on LED's 1,2 and 3 light up. when the button is pressed then led's 4 and 5 flicker simulating the engines coming on.
Any help is appreciated.
Aaron
First of all electronics are not my thing, biology or networking and I am at home, but apart from distance memories from GCSE's I am coming back to electronics blind and would really appreciate some help.
I have printed out a rocket on a 3D printer and now would like to place some LED's inside to illuminate it. 3 of these will be static blue, and two will flash yellow and red alternatively (pretend flames from motor).
I want to run it from 2 X 1.5V AA batteries as I already have some 2.9v blue LED's (10ma). I thought 2X AA would work OK
First of all I tried to cacluate what resistors I should use and it worked out at 12ohms, is this correct do i need to put a resistor in? And in parallel I would need one resister per LED. So I think this bit is OK.
Next I want to have the red and yellow LED flash alternatively but quite rapidly so it flickers more than an on off effect. What is a good circuit to use to achieve this, the words "flip flop" pop to mind but I am not sure this is the best method.
I have drawn up a very basic first attempt, (with out the oscillator part which would run LED's 4 and 5. The idea would be that when the circuit is turned on LED's 1,2 and 3 light up. when the button is pressed then led's 4 and 5 flicker simulating the engines coming on.
Any help is appreciated.
Aaron