HardLabs

LEGACY-fingerprint doorlock

feichtinger·LEGACY-fingerprint-doorlock·RTC/rtc.kicad_pcb

LEGACY-fingerprint doorlock PCB layout, top view — open source board by feichtinger

About the LEGACY-fingerprint doorlock PCB

LEGACY-fingerprint doorlock is an open source PCB design by feichtinger, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 15 × 12.2 mm, with 8 components from 7 distinct parts.

Other key parts include the MCP7940N and 32.768kHz. By type, the board carries 3 capacitors, 2 ICs, 2 connectors and 1 battery holder.

It belongs with the sensors and power & battery designs in this gallery.

From the project

A simple firmware and GUI for an electronic doorlock using a fingerprint sensor.

This project uses a ZFM-20 series fingerprint sensor to implement access controll (to a building or room) using an electrical doorlock (e.g. magnetic door buzzer).

All fingerprints can be managed by a simple GUI called Fingerprint-Manager or simply over a serial terminal.

a realtime clock module (for logfiles) a weather-proof button (for whole day access)

The sensor should be placed on the outside next to the door and is connected to the controller board with a 7-pole cable (you can use a piece of ethernet cable for this).

LEGACY-fingerprint doorlock, from the project README
From the project README

Main components on the LEGACY-fingerprint doorlock

MCP7940N32.768kHz

LEGACY-fingerprint doorlock bill of materials (BOM)

8 components, 7 distinct parts.

QtyPartRefs
1
MCP7940N
U1
1
32.768kHz
U2
1
CONN_01X04
P1
1
CONN_01X01
P2
1
BATTERY
BT1
1
100n
C1
2
10p
C2, C3

LEGACY-fingerprint doorlock design files

The KiCad project lives in the feichtinger/LEGACY-fingerprint-doorlock repository on GitHub; these links point at the commit this page was built from.

LEGACY-fingerprint doorlock: common questions

How big is the LEGACY-fingerprint doorlock PCB?

The LEGACY-fingerprint doorlock measures 15 × 12.2 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the LEGACY-fingerprint doorlock?

8 components, from 7 distinct parts. The full bill of materials is listed on this page.

Where can I download the LEGACY-fingerprint doorlock design files?

From the feichtinger/LEGACY-fingerprint-doorlock repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the LEGACY-fingerprint doorlock design in my own project?

Yes, under the terms of its GPL-3.0 license, which feichtinger chose for the repository.

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