I am looking for a timer circuit which will allow a series of off/on/off cycles. I am having trouble finding a circuit which allows variable duty cycles between resets. Here is a description of what the cycle must do: trigger signal, then off(delay) 16, on 1, off 8, on 1 off 8, on 1, off 8, on 1, off 16 on 2. These times are in seconds and are not exact but very close. The trigger signal will remain active through the entire cycle and then be removed to repeat the process. This circuit will be used to control the string tying motor on a round hay baler. Currently, the motor is manually stopped at the necessary positions by a simple on/off switch. The timer circuit will need to control a relay to pass the 12v to the motor that is derrived from the tractor battery. The baler has an indicator arm to show the diameter of the bale inside. This is where I will mount the trigger signal switch to activate the timer when the bale is the appropriate diameter to be tied. This switch will be released after the bale is tied and dumped out of the baler, as the indicator will return to the empty position, thereby releasing the trigger switch. It will reactivate once a new bale reaches the appropriate size. This process could be repeated up to 150 times per day, depending on the amount of hay in the field.