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2.The process supports design scales of 300 devices or 1000 pads
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Std edition Arduino Alarm Clock
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License: CC-BY-SA 3.0
Description
Arduino based circuit - Digital clock with alarm function.
(optional add a shake/tilt sensor for turning off the alarm)
Design Drawing
schematic diagram
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PCB
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| ID | Name | Designator | Footprint | Quantity |
|---|---|---|---|---|
| 1 | ATMEGA328P-PU | U1 | DIP-28_300MIL | 1 |
| 2 | 10k | R1,R2,R3 | AXIAL-0.3 | 3 |
| 3 | Power | CN1 | 2 PIN SCREW TERMINAL 2.54 | 1 |
| 4 | CR16Mhz | Y1 | CRYSTAL_HC-49S | 1 |
| 5 | 22pF | C1,C2 | RAD-0.1 | 2 |
| 6 | DS1307+ | U2 | DIP-8 | 1 |
| 7 | 32.768KHz | X1 | 3*8 | 1 |
| 8 | CR2032 3V | B1 | BATTERY-1 | 1 |
| 9 | RC1602B-LLH-JWV CONN | JP1 | HEADER 2.54 1X12 | 1 |
| 10 | TRIMMER 20K | R4 | TRIMMER_3306F | 1 |
| 11 | BUZZER | SG1 | BUZZER-12MM | 1 |
| 12 | SET | SW1 | KEY-6.0*6.0-2 | 1 |
| 13 | ADJUST | SW2 | KEY-6.0*6.0-2 | 1 |
| 14 | ALARM | SW3 | KEY-6.0*6.0-2 | 1 |
| 15 | TILT SENSOR SW-520D (optional) | U3 | SW520D | 1 |
| 16 | Progr CONN | H1 | HDR-5X1/2.54 | 1 |
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