Breakout design (in EAGLE) and source code for our door lock actuator, running on a Raspberry PI(1). Communication with the lock happens over MQTT. Does not contain user interface, check door-web for that.
To open the door, send the number of seconds to open to:
/bitraf/door/$door_id/open # Ex: 20
On success, will output values:
/bitraf/door/$door_id/isopen # Ex: true/false
/bitraf/door/$door_id/openuntil # Unix timestamp when door will lock again. Ex: 1495469392
On error, will send a string with an error message:
/bitraf/door/$door_id/error # Ex: "Time to open is negative"
Where $door_id is for instance 2floor, frontdoor, 4floor.
The /bitraf/door/ prefix is configurable, can be set to /mysystem/doorlocks.
At dlock13-msgflo/dlock13.cpp.
Impementation is in C++11, using msgflo-cpp.
Also provided is a simple Python module which will handle checking the MQTT messages being sent out on success/error.
Installing
pip install dlock13
A command-line tool is included
dlock13-open /bitraf/door/$door_id 60
For how to use programatically, use dlock13-open as example code.
The board has two MOSFETS for driving standard electronic locks. Expansion for two inputs also exists.
Single-sided board with through-hole components, can easily be CNC milled or etched.
# Function | Connector pin | BCM SoC pin | WiringPi pin |
===
mosfet1 | 19 | 10 | 12
mosfet2 | 2 | 11 | 14
BCM SoC pin is the on used for /sys/class/gpio/gpioNN and similar.
A systemd service template is normally used to each doorlock: [email protected].
systemctl status dlock13@2floor
The following environment variables are used. They can be specified in /etc/dlock13/$door_id.conf.
MSGFLO_BROKER- the MQTT broker connection details. Ex:mqtt://user:[email protected]DLOCK13_PIN- the GPIO pin number to use. Ex:11