Smart lock
Open the door, anytime, anywhere.
Without connecting the lock to the internet
Password protected
And you control which phone numbers it will respond to.
Control 2 doors
Manage both your apartment door and front door with one device.
Cloudless, using SMS
Lock and unlock the door from anywhere by sending an SMS.
Fail safe
You decide what should happen when the power fails.
Creating the lock
Connect the relay(s)
Connect the IN pin of the relay to signal signal pin 5.
If you would like to control two electric locks, connect the IN pin of the second relay to signal pin 6.
Electric locks can either be locked when they are not powered ("fail secure") or unlocked ("fail safe"). In the example above, the flow of electricity to the electric lock is "normally open" (N.O.), which means no electricity flows to your lock unless the relay is activated.
If you prefer that when the smart lock activates it interrupts the flow of electricity, then use the "normally closed" (N.C.) port of the relay instead.
Connect the GSM modem
Connect its U_TXD (Transmit) pin to signal pin 3, and connect its U_RXD (Receive) pin to signal pin 4. Connect a GND pin on the modem to a GND pin on the expansion board.
Make sure the antenna is screwed on securely.
Connect the USB splitter cable (optional)
This will allow you to power both the RF Nano and the GSM modem from a single USB charger. Connect the longer part to the RF nano.
Alternatively, you could just use two separate normal USB cables that are both connected to a charger with two USB ports.
Important: make sure your charger can supply at least 2.4 amps.
Plug in the RF-Nano Arduino
Plug the RF-Nano into its socket. The USB connector should be on the outside of the main board.
Add your new device
Visit the Candle controller and on the things page press the (+) icon. Your new creation should be available. Optionally, select which of its properties you'd like to have in the spotlight. Click on "save" to complete the proces.
Shopping list
Sep 02, 2019
Power two micro USB devices with one plug. While optional, this is useful if you would like to place two devices in a single…
Aug 27, 2019
A basic relay that can toggle the power or a connection to another device. The central port is ground. Besides it you…
Aug 10, 2018
The RF-Nano is an Arduino Nano with built-in wireless connectivity. It's the brain of all Candle devices.
Aug 09, 2018
These wires allow you to easily connect the main board to sensors and actuators. They snugly fit over the pins. No soldering…
Aug 07, 2018
This A6 GPRS modem allows you to send and receive SMS. It has a Micro-USB port which makes it easy to provide it with the…
Aug 06, 2018
This expansion board makes it easy to connect everything by just plugging in wires.