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Std EditionButtons for speed climbing
Description
This is a speed climbing chronometer's schematic. You can find source code for attiny2313 here : https://github.com/Lezh1k/ClimbingChronometer .
Here I'm using 2 type of buttons : "release" and "closing". "release" means that contacts are connected when button ISN'T PRESSED. And "closing" means that contacts are connected when button IS PRESSED.
I don't use any common wire because of interferences. Also I use twisted pair for connecting buttons and lamps because usual climbing wall is about 18-20 m.
For connection with PC you can use any USB->USART connector. I use CP2102.
Good luck, have fun!
Documents
Main schematic
Open in editor| ID | Name | Designator | Footprint | Quantity |
|---|---|---|---|---|
| 1 | ATTINY2313-20PU | U1 | DIP20 | 1 |
| 2 | 4.3k | R1 | AXIAL-0.3 | 1 |
| 3 | 200 | R2,R3,R4,R5,R7,R8,R9 | AXIAL-0.3 | 7 |
| 4 | CLOSING_BUTTON | SW1,SW2,SW5 | SWITCH-3X6X2.5_SMD | 3 |
| 5 | RELEASE_BUTTON | SW3,SW4 | SWITCH-3X6X2.5_SMD | 2 |
| 6 | 4.3-5.1K | R6,R10 | AXIAL-0.3 | 2 |
| 7 | BD237 | Q1,Q2,Q3,Q4 | TO126 | 4 |
| 8 | 4.3K | R11,R12,R13,R14 | AXIAL-0.3 | 4 |
| 9 | 1k | L1,L2,L3,L4 | 1X02 | 4 |
| 10 | CP2102N-A01-GQFN20 | U2 | SLAB-QFN-20-1700x1700TP_V | 1 |
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