Hi all im new to the forum and would like a little bit of advice please.
I would like to build a timer for a scalextric pit lane track and have found a digital stopwatch with 7 segment display that is perfect for what i need.
Here is the schematic of the circuit:
http://www.circuitstoday.com/wp-content/uploads/2008/02/stopwatch-1.JPG
The problem I have is that i want to start and stop the timer between 2 points and use momentary switches at each end of the track, these would replace S2 (in parallel?) on the diagram. The idea is that when a car passes the switch and makes the contact it starts/stops the timer.
So how would i change the single on/off switch for 2 momentary switches.
The timer reset is already a momentary switch so that is not a problem.
I would like to add a few LEDs to be on or off depending on wether a car has activated the timer, but need to sort the switch first. any help is really appreciated
I would like to build a timer for a scalextric pit lane track and have found a digital stopwatch with 7 segment display that is perfect for what i need.
Here is the schematic of the circuit:
http://www.circuitstoday.com/wp-content/uploads/2008/02/stopwatch-1.JPG
The problem I have is that i want to start and stop the timer between 2 points and use momentary switches at each end of the track, these would replace S2 (in parallel?) on the diagram. The idea is that when a car passes the switch and makes the contact it starts/stops the timer.
So how would i change the single on/off switch for 2 momentary switches.
The timer reset is already a momentary switch so that is not a problem.
I would like to add a few LEDs to be on or off depending on wether a car has activated the timer, but need to sort the switch first. any help is really appreciated