Nicu Hodos
bd53ec9837
- orphan .gitmodule for RF24 - Adafruit-GFX-Library-Tiny v1.2.2: it is the same as the official version of the same version - Adafruit_LED_Backpack-Tiny v1.1.6: the only difference it is the inclusion of TinyWireM.h instead of Wire.h
A gateway for 433 MHz devices
It uses rc_switch library for controlling wall sockets.
It supports receiving:
- serial commands for controlling wall switches - all protocols
- RC commands from wall switches remotes - protocols 1 and 2
- sensors states over
Protocol 2
It acts as a serial gateway, communicating in JSON format, and it is connected to a Raspberry Pi running Home Assistant.
It uses an Arduino Pro Mini 5v 16 Mhz. The original bootloader has been replaced with Optiboot using this tutorial: https://andreasrohner.at/posts/Electronics/How-to-make-the-Watchdog-Timer-work-on-an-Arduino-Pro-Mini-by-replacing-the-bootloader/
Receive RC
Sensors
Sensors transmit state using Protocol 2 and the gateway translates them into JSON over serial.
Protocol structure
STATE
|
1010|1|101010101|1010101010101|10101
----|-----------|-------------|-----
TYPE| VALUE | VCC | ID
Sensors types
enum SensorType : unsigned short {
GENERIC = 4,
HUMIDITY = 5,
TEMPERATURE = 6,
CONTACT = 7
};
Sensors IDs
enum SensorId : unsigned short {
WINDOW1 = 1,
WINDOW2 = 2,
WATER_SENSOR = 3,
TEMP_SENSOR = 4,
LIGHT_SENSOR = 5,
MOVEMENT_SENSOR = 6,
OIL_SENSOR = 7
};
Stairs temperature
Value and voltage
{
"sensor": {
"id": 4,
"diagnostic": {
"voltage": 2.239
},
"temperature": 16.2
}
}
Value only
{
"sensor": {
"id": 4,
"temperature": 16.2
}
}
Oil sensor
Value and voltage
{
"sensor": {
"id": 7,
"diagnostic": {
"voltage": 4.282
},
"value": 13
}
}
Switches
Gateway receives remote commands over RC Switch and translates them into JSON over serial
Protocol 1
on
{
"rcSwitch": {
"protocol": 1,
"state": true,
"group": "1",
"channel": 1,
"raw_value": 5571921
}
}
off
{
"rcSwitch": {
"protocol": 1,
"state": false,
"group": "1",
"channel": 1,
"raw_value": 5571921
}
}
Protocol 2
{
"rcSwitch": {
"protocol": 2,
"value": 2650807673
}
}
Other protocols
{
"rcSwitch": {
"protocol": 4,
"value": 1234567890
}
}
DHT
Reads local DHT11 sensor and outputs JSON over serial
{
"dht11": {
"temperature": 31.9,
"humidity": 45
}
}
Receive commands
It receives commands over serial, in JSON format, and executes them.
Protocol 1
on
{
"rcSwitch": {
"protocol": 1,
"group": "00001",
"channel": 1,
"state": true
}
}
off
{
"rcSwitch": {
"protocol": 1,
"group": "00001",
"channel": 1,
"state": false
}
}
Protocol 2
{
"rcSwitch": {
"protocol": 2,
"value": "10010110000000000001110101111001"
}
}
Other protocols
{
"rcSwitch": {
"protocol": 4,
"value": "010001101001100101110100"
}
}