Timer Photo Quotes

I just wished I’d been able to see the timer running down back then so I could have made more out of each moment, tasted the sea salt on my lips a little longer, laughed fuller and harder, taken more photos, captured more of the sweetness to help counter the bitterness that had been coming. I knew regrets were pointless, but I had them all the same. I guess you never realise how bright the day is until the rain comes.

Step 2: Build the LED-Controlling Circuit Now, you’re going to connect the 4017 decade counter with resistors and LEDs. There are a lot of connections, so take as much time as you need to get them all correct. Plug the 4017 decade counter into the breadboard so that the middle of the decade counter is around row 20, with the chip marker pointing up toward row 1. Then, take out five LEDs and ten 100 Ω resistors. Connect each LED’s negative (short) leg to the negative supply column on the right, and connect each positive (long) leg to its own empty row in the component area on the right. Place the green LED in the middle, the two blue ones on each side of the green LED, and the red ones on each end. Then, connect the ten 100 Ω resistors. In the circuit diagram, notice that pins 1 to 7 and pins 9 to 11 of the 4017 decade counter each connect to one side of a resistor. The other side of each resistor needs to be on a row by itself. Take care to ensure the resistor legs don’t accidentally touch one another. Look at the following breadboard circuit to see how I connected them: Now, connect the LEDs to the resistors on the 4017 decade counter, and connect the decade counter circuit to the 555 timer circuit according to the circuit diagram. Jumper wires are the best way to make those connections. From each resistor, connect a jumper wire to the corresponding LED. Look at the circuit diagram and notice, for example, that the other side of the resistor connected to pin 4 of the 4017 decade counter should connect to the positive pin of the green LED in the middle. Go through the pins in the circuit diagram to figure out which LED to connect each resistor to. Connect pins 8 and 15 of the 4017 decade counter to the negative supply column, and connect pin 16 to the positive supply column. Use a wire to connect the output from the 555 timer (pin 3) to the clock input of the 4017 decade counter (pin 14). Make sure that you have positive and negative connections in all of your power supply columns. The breadboard I recommend in this project’s Shopping List (page 267) divides its power supply columns into two sections, one upper and one lower. Just connect each of the upper and lower halves on the left side with a wire to bridge the gap, as shown. Do the same on the right side. Alternatively, use two jumper wires from the left columns to the right columns. You can use a jumper wire, or you can cut off a small piece of wire, as I’ve done in this photo. Then, use two long jumper wires to connect the lower-left power supply columns with the two lower-right columns. When you’re done connecting the two circuits and all the power supply columns, your breadboard should look like this: