Hi Chris,
Hmm, adding features after you've got everything working? You must have some engineer's blood in you then.
First, I must have missed this before, sorry, but disconnect pins 4-7 and 13-15 from each and from ground of the 4060. These are all outputs and don't need to be tied to ground (plus you'll need them now). You can leave pin 9 disconnected as well, but if the clock is accurate, don't worry about it.
When you say pull pin 15 high, do you mean just that? The only way to decrement the counter (as you stated, pin 10 is held low) that way is to send a clock signal to pin 15 (high-low-high-etc.). You could tie one of the remote outputs to pin 15, but since all clock pins are tied together, the user would have to repeatedly press up and down on the remote button and would decrement by seconds which would take forever.
What you want is a fast clock. Thankfully, your 4060 is dividing 32.768kHz down to 2Hz (then 1Hz through the 4027). This is done by dividing the crystal signal multiple times on pins 1-7, and 13-15 (take a quick look at 4060 pinout here: http://www.coolcircuit.com/circuit/timer_4060/index.html).
I assume you still have your breadboard setup? With the clock paused, preset the counter to 45:00. Now, take a long jumper wire and connect it to pin 15 of any 4510 (since they are all connected). Now touch the other end of the jumper on one of the following pins of the 4060: 1-7, 13-15. Experiment with all of these pins until you find the best "FAST ADVANCE" and "SLOW ADVANCE" setting (per your diagram).
Once you've determined this, you can put a NPN transistor or MOSFET between the appropriate 4060 pin and pin 15 of the 4510s, then connect the remote signal to the base/gate of the transistor/MOSFET. If you use a transistor, you'll need to add a base resistor - I'd suggest a MOSFET if you have it. Either will act as a switch to short the 4510 clock pin to the faster 4060 pins.
This will decrement seconds and all which might be a little bit of a pain to set back to 00 once you get the minutes value where you need it. If you're feeling ambitious, you could try either adding 10kΩ resistors between the 1Hz clock signal and each of the pin 15 of the 4510s - then jumper pin 15 of each of the 4510s controlling the minutes and tie directly to the faster 4060 pins. See if this only changes the minutes value and keeps the seconds at 00. Alternately, try adding a signal diode like 1N914 or 1N4148 in series to 1Hz signal between the 4510s controlling the minutes and the 4510s controlling the seconds. This might do it too. This added goal is to only allow the minutes to change and keep the seconds set at 00. You might come up with something better.
In a perfect world, you could make multiple BCD inputs to the presets of the minute 4510s then press the corresponding remote button for 20:00 minutes and have just the 20 preset energized so the 20 is loaded into the minutes value. This would require a short time delay so that when the 20 minute remote button was pressed, the 20 BCD value was energized, the others were off, and then the preset was enabled. Number of other ways to do this, but it would require some thinking through and more parts. Using the faster clock outputs of the 4060 will do what you want with minimal effort and parts.
Great job on the circuit, loved the mention you got on the soccer website. I'm very glad to be able to help you out, then to see the fruits of your labor, simply awesome! Great job and good luck!
Hmm, adding features after you've got everything working? You must have some engineer's blood in you then.
First, I must have missed this before, sorry, but disconnect pins 4-7 and 13-15 from each and from ground of the 4060. These are all outputs and don't need to be tied to ground (plus you'll need them now). You can leave pin 9 disconnected as well, but if the clock is accurate, don't worry about it.
When you say pull pin 15 high, do you mean just that? The only way to decrement the counter (as you stated, pin 10 is held low) that way is to send a clock signal to pin 15 (high-low-high-etc.). You could tie one of the remote outputs to pin 15, but since all clock pins are tied together, the user would have to repeatedly press up and down on the remote button and would decrement by seconds which would take forever.
What you want is a fast clock. Thankfully, your 4060 is dividing 32.768kHz down to 2Hz (then 1Hz through the 4027). This is done by dividing the crystal signal multiple times on pins 1-7, and 13-15 (take a quick look at 4060 pinout here: http://www.coolcircuit.com/circuit/timer_4060/index.html).
I assume you still have your breadboard setup? With the clock paused, preset the counter to 45:00. Now, take a long jumper wire and connect it to pin 15 of any 4510 (since they are all connected). Now touch the other end of the jumper on one of the following pins of the 4060: 1-7, 13-15. Experiment with all of these pins until you find the best "FAST ADVANCE" and "SLOW ADVANCE" setting (per your diagram).
Once you've determined this, you can put a NPN transistor or MOSFET between the appropriate 4060 pin and pin 15 of the 4510s, then connect the remote signal to the base/gate of the transistor/MOSFET. If you use a transistor, you'll need to add a base resistor - I'd suggest a MOSFET if you have it. Either will act as a switch to short the 4510 clock pin to the faster 4060 pins.
This will decrement seconds and all which might be a little bit of a pain to set back to 00 once you get the minutes value where you need it. If you're feeling ambitious, you could try either adding 10kΩ resistors between the 1Hz clock signal and each of the pin 15 of the 4510s - then jumper pin 15 of each of the 4510s controlling the minutes and tie directly to the faster 4060 pins. See if this only changes the minutes value and keeps the seconds at 00. Alternately, try adding a signal diode like 1N914 or 1N4148 in series to 1Hz signal between the 4510s controlling the minutes and the 4510s controlling the seconds. This might do it too. This added goal is to only allow the minutes to change and keep the seconds set at 00. You might come up with something better.
In a perfect world, you could make multiple BCD inputs to the presets of the minute 4510s then press the corresponding remote button for 20:00 minutes and have just the 20 preset energized so the 20 is loaded into the minutes value. This would require a short time delay so that when the 20 minute remote button was pressed, the 20 BCD value was energized, the others were off, and then the preset was enabled. Number of other ways to do this, but it would require some thinking through and more parts. Using the faster clock outputs of the 4060 will do what you want with minimal effort and parts.
Great job on the circuit, loved the mention you got on the soccer website. I'm very glad to be able to help you out, then to see the fruits of your labor, simply awesome! Great job and good luck!