2 layers134.6 × 116.8 mm AlarmKeypad, the printed circuit board in 3D

AlarmKeypad

Size: 134.6 × 116.8 mm
Copper layers: 2
Thickness: 1.6 mm
Parts: 25
Nets: 17
Pads: 235
Tracks, vias: 304, 17
Pours: 1
Routed: Yes
KiCad: KiCad 8.0 (file 20240108)
Created: 15 May 2024
Updated: 15 May 2024

Overview

AlarmKeypad is an open-source printed circuit board by simaanc, from the simaanc/AlarmKeypad repository on GitHub. It is a 2-layer board of 134.6 × 116.8 mm with 25 parts on 17 nets, routed with 304 tracks and 17 vias.

It is built around the PCF8574AN. Its parts include 16 switches, 3 ICs and 1 connector.

Main components

PCF8574AN
PDIP-16-40℃~+85℃ 100kHz 10uA 2.5V~6V 25mA 300uA 8 I2C Interrupt Output Push-Pull Reset function、Cascading and address extension、Built-in LED driver PDIP-16 I/O Expanders ROHSTexas InstrumentsI/O Expanders

Project files

Show this board on your page

https://pcbkit.io/boards/simaanc/AlarmKeypad

The board's own page, for a message or a post.

Source

Repository: simaanc/AlarmKeypad
Board file: AlarmKeypad.kicad_pcb
Commit: 9472d4e
Licence: Not stated

Parts

Qty	Value	Footprint	References
16	KAILH MX	Alarm Keypad:KAILH MX CHOC V1 CHOC V2 HOT SWAP	SW1, SW2, SW3, SW4, SW5, SW6, SW7, SW8, SW9, SW10, SW11, SW12, SW13, SW14, SW15, SW16
1	9X9MM_SMD_PIEZO MURATA	Alarm Keypad:PIEZO_9MM_TH	P1
1	Hole_gge39394	Alarm Keypad:Hole_gge39394	Hole_gge39394
1	Hole_gge39424	Alarm Keypad:Hole_gge39424	Hole_gge39424
1	Hole_gge39439	Alarm Keypad:Hole_gge39439	Hole_gge39439
1	Hole_gge39454	Alarm Keypad:Hole_gge39454	Hole_gge39454
1	PCF8574AN	Alarm Keypad:PDIP-16_L19.7-W6.6-P2.54-LS7.6-BL	U3
1	PN532MOD COPY	Alarm Keypad:PN532MOD	U4
1	R503	Alarm Keypad:R503 FINGERPRINT READER	U2
1	myTTGO T-DISPLAY-S3 -NO_CUTOUT	Alarm Keypad:TTGO T-DISPLAY-S3 AFS	A1

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Questions

How big is the AlarmKeypad PCB?

It measures 134.6 × 116.8 mm and has 2 copper layers, 1.6 mm thick.

What parts does the AlarmKeypad use?

25 parts, built around the PCF8574AN. 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 AlarmKeypad KiCad files?

From the simaanc/AlarmKeypad repository on GitHub, at the commit this page was made from: the board is AlarmKeypad.kicad_pcb and its schematic AlarmKeypad.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the AlarmKeypad design in my own project?

Its repository states no licence, so its author keeps all rights: ask simaanc before reusing the design.