2 layers54.5 × 38.3 mm
2 layers58 × 41.5 mm
Alarm2
DSchroer/AlarmClockAVR software to control my alarm clock
- Size
- 58 × 41.5 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 18
- Nets
- 41
- Pads
- 90
- Tracks, vias
- 168, 0
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 24 Feb 2018
- Updated
- 12 Oct 2020
Overview
Alarm2 is an open-source printed circuit board by DSchroer, from the DSchroer/AlarmClock repository on GitHub. It is a 2-layer board of 58 × 41.5 mm with 18 parts on 41 nets, routed with 168 tracks and 0 vias.
It is built around the ATMEGA328P-PU, DS3231MZ/V+ and 10118193-0001LF. Its parts include 6 resistors, 4 switches, 2 ICs, 2 connectors and 1 capacitor. It belongs with the AVR (ATmega, ATtiny) boards of this library.
Main components
3
ATMEGA328P-PU
DIP-28-300mil-40℃~+85℃ 1.8V~5.5V 10bit 1KB 20MHz 23 2KB 32KB 8 Bit AVR Built-in FLASH DIP-28-300mil Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)
DS3231MZ/V+
SOIC-8-40℃~+85℃ 2.3V~5.5V Built-in I2C Temperature compensation、Backup power management and battery charging、Alarm function、Locking and tamper-proof、Periodic interrupt output SOIC-8 Real Time Clocks ROHSMaxim Integrated (Analog Devices)Real Time Clocks
10118193-0001LF
SMD-55℃~+85℃ 1 1.8A 100V 5P Black Female Micro-B Surface Mount, Right Angle USB 2.0 SMD USB Connectors ROHSAmphenolUSB Connectors
Parts
18| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | SW_Push | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Horizontal | SW1, SW2, SW3, SW4 |
| 3 | 10K | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R1, R3, R4 |
| 2 | 2.2K | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R5, R6 |
| 1 | 10118193-0001LF | FCI_10118193-0001LF | J1 |
| 1 | 10k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R2 |
| 1 | 1uF | Capacitor_THT:C_Disc_D5.0mm_W2.5mm_P5.00mm | C1 |
| 1 | ATmega328P-PU | Package_DIP:DIP-28_W7.62mm | U1 |
| 1 | AVR-ISP-6 | Connector_PinHeader_2.54mm:PinHeader_2x03_P2.54mm_Vertical | J2 |
| 1 | Battery_Cell | Battery:BatteryHolder_Keystone_3001_1x12mm | BT1 |
| 1 | Buzzer | Buzzer_Beeper:Buzzer_12x9.5RM7.6 | BZ1 |
| 1 | DS3231MZ | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U2 |
| 1 | Nokia-5110 | Connector_PinHeader_2.54mm:PinHeader_1x08_P2.54mm_Vertical | D1 |
Questions
How big is the Alarm2 PCB?
It measures 58 × 41.5 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Alarm2 use?
18 parts, built around the ATMEGA328P-PU, DS3231MZ/V+ and 10118193-0001LF. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Alarm2 KiCad files?
From the DSchroer/AlarmClock repository on GitHub, at the commit this page was made from: the board is v2/design/Alarm2.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Alarm2 design in my own project?
Its repository states no licence, so its author keeps all rights: ask DSchroer before reusing the design.
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