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SLIDERS INFO

`updated 3/21/2011
whats new:
a note about setting the time on the digits (a fast forward function if you hold the button in)
the green bargraph circuits for the original timer
the 3 blinking leds on the original timer circuit
added an note about 4543 ic's instead of the 4511 for driving common annode digits
added a note about the leds between the original timers digits

Sliders countdown circuit:

note: this is just what you need to get a 6 digit countdown circuit fully functional (without programming anything

) as well as blinking led's and bargraph display, if you want to make emmitters light up or how to make the case and all, stay tuned for the next guides

sidebar notes will be in bold.

list of tools:

the smallest wire availible
solder
soldering iron
desoldering tools (for accidents)
electrical tape
hot glue gun (optional)
a small slotted screwdriver (for scraping mistakes)

parts needed:

prototype board
one 555 ic
one red led
6 seven segment leds (common cathode)
found here (trust me they are hard to find otherwise)
[link]
6 4029 ic's
6 4511 ic's
1 47 uf capacitor
5 3.3k resistors
1 1.2k resistor
any type of bipolar switches,
momentary contact buttons,
or on/off click buttons
battery pack (optional since you could build one yourself)
3 AAA batteries (or 4.5 volts)
2 10 segment bargraph leds

for the original timer bargraph circuit
parts needed:
1 3914 ic
1 330 ohm resistor
2 green 10 segment bargraph leds

for the original timer 3 alternating leds to the left of the bargraphs:
1 green led
1 red led
1 yellow led
1k resistor

for the original timer leds between the digits
6 small red leds

on a note: if you cant find the rightsize 7 segment digits any common cathode digits will work, just adjust the amount of 4029 and 4511 ic's accordingly. you'll need one of each for each digit. common annode will not work unless you instead of using the 4511 ic's use the 4543 ic which can handle both common cathode common annode and even lcd displays.

part 1:

a note about the 555 ic in this circuit. i am not 100 percent sure if 3 555 ic's wil lbe needed to drive the whole original timer, my theory is that you may be able to get away with using 1 or 2. i'm shooting for just one, i will update this guide when i figure that out. that being said, all that you need to do to the original 555 circuit to try to use it for all the functions is hook pin 4 and 8 together to posative and hook an extra wire from pin 3 to the 1k resistor on one end thus making it a middle pulse wire for the 3 alternating leds for the original timer (seen at the bottam of the guide).

wiring the 555 circuit

1. Connect pin 1 to negative
2. Connect pin 2 to pin 6
3. Pin 3 is where you get the clock speed pulse from. it will be connected to pin 15 of every 4029 chip in the circuit. It is also hooked to the posative lead of the blinking led and the negative pin of the led is hooked to negative. (unless you have an led that already blinks on its own)
4. Connect pin four to posative
5. nothing goes to pin 5
6. connect the 47uf capacitor from pin 6 to a switch or on/of button, and connect the button to negative (make sure the negative lead is hooked to the switch or button and the posative lead to pin six of the 555) (note: the reason for the switch or on/off button is that when you start up the circuit for some reason only one digit will come on and count down and it will turn them on at random. so in leaving the switch in the off position when you start up the timer, what this does its forces all digits to come on, and while its still on turn the switch in the on position and it will start counting from a random time, thus eliminating the hassle of waiting for the circuit to warm up and adding random sliding as a bonus

)
7. solder together in series (connected together in line) 4 3.3k resistors and 1 1.2k resistor, and connect them with a wire or by your own means, from pin 6 to pin 7 (this is what controls the pulse speed and i have found that 14.4k resistance is normal clock speed or near close to it.)
8. connect a 3.3k resistor from pin 7 to posative
9. connect pin 8 to posative.

note:
now its time to test your 555 pulse circuit. hook up your power pack to it and see if your blinking led is blinking steady. if it is, great, if its not on check all the connections. if its not pulsing and its a solid light , check the connection from the resistors at pin 6 to pin 7, thats the leading cause of no countdown. if you want the countdown to stop you could put a switch there to turn it on and off as you wish.

Part 2:

Wiring the seconds countdown digit and the 10 segment led bargraphs

the 4511 ic

1. connect pin 1 to pin 11 of the 4029 ic
2. connect pin 2 to pin 14 of the 4029 ic
3. connect pin 3 to pin 4, and connect them to posative
4. connect pin 5 to negative
5. connect pin 6 to pin 2 of the 4029 ic
6. connect pin seven to pin 6 of the 4029 ic
7. connect pin 8 to negative
8. for this step i have included an example of where to hook the pins of the 7 segment digit to the bargraphs to make them work together for the added effect. its also used as an example of how your 7 segment digit might connect to the pins of the 4511 as continued below. please note that while the points may not be the same as in the diagram, the letters used are accurate for all 7 segment common cathode digits and can still be used as a guide as to where to connect the pins to the digit to get them working.

bargraphs:
1 and 2 go to pin f
3 to pin d
4 to pin d
5 and 6 to pin b
7 to pin f
8 to pin c
9 and 10 to pin e

note: if you want to make the decimals blink with the circuit just hook them to pin 3 of the 555 ic.

9. connect pin 9 to pin 'e' of the 7segment led
10. connect pin 10 to pin 'd' of the 7 segment led
11. connect pin 11 to pin 'c' of the 7 segment led
12. connect pin 12 to pin 'b' of the 7 segment led
13. connect pin 13 to pin 'a' of the 7 segment led
14. connect pin 14 to pin 'g' of the 7 segment led
15 connect pin 15 to pin 'f' of the 7 segment led
16. connect pin 16 to posative, and connect the 7 segment led's pin 1 (known as the common cathode pin) to negative.
17. connect all of the negative pins to each of the 10 segment led bargraphs together and connect them to negative.
18. refer to the diagram in step 8 to see where to hook the pins of the 10 segment led bargraphs to the pins ofthe 7 segment led for sync'd movement.

the 4029 ic

1.connect pin 1 to pins 3, 4 , 5, 8 , 9 ,10, 12, and 13, and connect a wire from one of them to negative (note: pin 10 if you want to put a bi polar switchi instead of connecting it to negative, with the wire from pin 10 going to the center pin of the switch and one pin going to negative and one to posative, it will cause the countdown to count up if you switch to posative, or to count back down when connected to negative)
2. connect pin 7 to pin 5 of the next 4029 chip
3. connect pin 15 to pin 3 of the 555 timer chip
4. connect pin 16 to posative

part 3:

The other 5 digits

after you have tested that your first digit counts down from 9 to zero and then rolls back to 9 and continues that process and that your bargraphs are working in sync with that digit, its time to continue on with the other 5 digits (or however many you plan on putting in).
note that the steps are pretty much the same with a few things that have changed, the changes will be marked in red so as to have no confusion.

the 4511 ic

1. connect pin 1 to pin 11 of the 4029 ic
2. connect pin 2 to pin 14 of the 4029 ic
3. connect pin 3 to pin 4, and connect them to posative
4. connect pin 5 to negative
5. connect pin 6 to pin 2 of the 4029 ic
6. connect pin seven to pin 6 of the 4029 ic
7. connect pin 8 to negative
8. the following remains the same
9. connect pin 9 to pin 'e' of the 7segment led
10. connect pin 10 to pin 'd' of the 7 segment led
11. connect pin 11 to pin 'c' of the 7 segment led
12. connect pin 12 to pin 'b' of the 7 segment led
13. connect pin 13 to pin 'a' of the 7 segment led
14. connect pin 14 to pin 'g' of the 7 segment led
15 connect pin 15 to pin 'f' of the 7 segment led
16. connect pin 16 to posative, and connect the 7 segment led's pin 1 (known as the common cathode pin) to negative.

the 4029 ic

1.connect pin 1 to pins 3, 4 , 5, 8 , 9 ,10, 12, and 13, and connect a wire from one of them to negative (note: pin 10 if you want to put a bi polar switch, with the wire from pin 10 going to the center pin of the switch and one pin going to negative and one to posative, it will cause the countdown to count up if you switch to posative, or to count back down when connected to negative) Do not connect pin 5 of the rest of the 4029's to negative, it will cause errors. instead, make sure that the pin 7 from the previous 4029 is hooked here, and hook a spare wire to it which will go to a button that has its other pin going to negative, and also one wire going from pin 6 of the 555 and one wire from the other pin of the button to pin 7 of the 555 (fast forward if you hold the button in), so that when the button is pushed it will countdown at your choosing (so as to set what time to slide

)
2. connect pin 7 to pin 5 of the next 4029 chip
3. connect pin 15 to pin 3 of the 555 timer chip
4. connect pin 16 to posative

when all is said and done you should have a 6 digit countdown timer (or with the supplied suggesions , up as well.) with working bargraph display (for the egyptian and jensen timers) and a blinking led

original timer bargraph circuit:

3914 ic:

1. pin 1 to negative lead of bargraph light 1
2. pin 2 to negative
3.pin 3 to posative
4. pin 4 to negative
5. pin 5 to pin 2 of the 555 ic
6. pin 6 to pin 7
7. pin 7 to1.2k resistor to pin 8
8. pin 9 to negative
9. pin 2 connect 3.3 k resistor to the same 1.2k resistor on the end leadinng to pin 8
10. leave pin 10 untouched
11. pin 11 to pin 9 on negative lead of bargraph light 1
12. pin 12 to pin 8 negative lead of bargraph light 1
13. pin 13 to pin 7 negative lead of bargraph light 1
14. pin 14 to pin 6 negative lead of bargraph light 1
15. pin 15 to pin 5 negative lead of bargraph light 1
16. pin 16 to pin 4 negative lead of bargraph light 1
17. pin 17 to pin 3 negative lead of bargraph light 1
18. pin 18 to pin 2 negative lead of bargraph light 1

The red led's in between the digits of the original timer:
1. negative pins of all of them soldered together to negative.
2. Posative leads of them soldered together and to pin 3 of the 555 ic

3 alternating leds to the left of the bargraphs on the original timer:

1. pin 1 to negative
2. pin 2 to pin 6
3. pin 3 to negative pin of green and yellow leds and one end of a 1k resistor
4. pin 4 connect to pin 8 and both to posative end of green and yellow leds
5. leave pin 5 unconnected
6. connect the 47uf capacitor from pin 6 to negative
7. connect 15k resistor between pin 6 and 7
8. connect pin 7 with a 3.3k resistor to posative
9. connect posative lead of red led to the other end of the 1k resistor and the negative lead to negative

a note about the 555 ic in this circuit. i am not 100 percent sure if 3 555 ic's wil lbe needed to drive the whole original timer, my theory is that you may be able to get away with using 1 or 2. i'm shooting for just one, i will update this guide when i figure that out. that being said, all that you need to do to the original 555 circuit to try to use it for all the functions is hook pin 4 and 8 together to posative and hook an extra wire from pin 3 to the 1k resistor on one end thus making it a middle pulse wire for the 3 alternating leds for the original timer (seen at the bottam of the guide).

I would like to thank Aaronslider, for without him the fundamental basics of this circuit desgin would have never come about. he provided the seed circuit and i modified it with permission from him. I'd also like to thank xavengingangelx for his brillitan faceplates and his ideas and input, without him as well i wouldnt have gotten this far. i would also like to thank someone from youtube. jendzurski, if it wasnt for him i wouldnt have figured out how to get the correct pulse from the 555 ic to drive the green bargraphs for the original timer. Noone under any circumstances is to modify or alter this guide or claim it has his/her own. it may however be distributed as you wish freely and under no circumstances is it to be published or sold at all (published is ok with written consent). if theres any errors or if you get stuck feel free to email me at : timerslide@hotmail.com, all questions will be answered accordingly.

Posted by STARLINGX at 04:12 on March 30th, 2011 at 4:12AM
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SLIDERS INFO, posted March 30th, 2011, 1 comment