circuit mainly by the pulse generator and a decade counter circuit. Pulse generator and external elements by NE555 multivibrator, when you press the button S1 when Q1 turns on, the output pulse NE555 3 feet, then five turns the output CD4017 output high, resistors and transistors by different combination, can drive seven LED light to indicate the number of points 1-6 points.
5.Component list:
serial number | Component | Value | Label | serial number | Component | Value | Label |
01 | resistance | 470R | R8 R9 R10 | 11 | audion | S8050 | Q2 Q4 Q5 |
02 |
| 1K | R7 | 12 |
| S8550 | Q1 Q3 |
03 |
| 10K | R3--R6 R12--R16 | 13 | IC socket | 8PIN | U1 |
04 |
| 3.3M | R2 | 14 |
| 16PIN | U2 |
05 |
| 4.7M | R11 | 15 | IC | NE555 | U1 |
06 |
| 10M | R1 | 16 |
| CD4017 | U2 |
07 | capacitance | 104P | C2 | 17 | Terminal | XH2.54 2P | J1 |
08 |
| 1uF/50V | C1 | 18 | Power line | XH 2P | 1 |
09 | LED | ะค5Red | D1--D7 | 19 | PCB | FR-4 | 74*35mm |
10 | touch touch switch | 6*6*5 | S1 | 20 |
For anything problem about product, price, shipping or order status, pleasecontact us via eBay message.Just contact us using the "Ask the seller a question" link on eBay.
We expect positive feedback and 5 scores DSR from you.
* When you satisfied with our product and services please leave us positive feedback.
* If you have got the package, please confirm "Delivery on time" For us.
* If a problem occurs, contact us immediately with any email request.
* Just contact us using the " Ask the seller a question" link on eBay.
Your Satisfaction is our Priority. Our goal is to make all our customers as happy as possible while shopping with us.