I recently purchased this kit. Its an adjustable on/off cyclic timer. www.canakit.com Kit #CK191. I wanted to use it for my fog machine at halloween (15 seconds on and 60 seconds off). My problem is that when adjusting the pots I can only find 2 seconds and 60 seconds. Nothing in between. I was wondering if I can change P1 and P2 to a different value and if so what? and what else would I have to change in order for me to achieve the desired time settings. This timer is made to be adjusted from a few seconds to 30 minutes.
R1, R4, R5 = 1 K Ohm
R2, R3 = 2.2 K Ohm
R6 = 560 Ohm
D1, D2, D3 = 1N4148
P1, P2 = 2.2 M Ohm Trimmer pot
Q1 = 2N4124
C1 = 470 uF/16V
C2 = 1000 uF/10V
C3 = 103/0.01 uF/10n
U1 = NE555
Input is 9VDC or AC
R1, R4, R5 = 1 K Ohm
R2, R3 = 2.2 K Ohm
R6 = 560 Ohm
D1, D2, D3 = 1N4148
P1, P2 = 2.2 M Ohm Trimmer pot
Q1 = 2N4124
C1 = 470 uF/16V
C2 = 1000 uF/10V
C3 = 103/0.01 uF/10n
U1 = NE555
Input is 9VDC or AC