Environmental Monitoring Independent of Existing Infrastructure
Gateway & Field Sensor Components
- Tracking code, requirements, BOM and so on, for delivering the hardware solution
Transmitter
- For install instructions See README
- Gather data from sensors, send to gateway using LoRa
- No internet connection required
- CAD Files are provided... View
Gateway/Receiver
- For install instructions see README
- Collect data from transmitter nodes
- Parse / verify and upload to project API
- Either requires internet connection to function, or connection to network hosting the API, may look to allow fully offline/off-grid functionality going forwards
- CAD Files are provided... View
BOM - Field Sensors
| Unit | Cost | Description | Link |
|---|---|---|---|
| WeMos D1 Mini | £1.58 | Micro Controller | Buy |
| Raspberry Pi Model 4 | £50.00 | SBC | Buy |
| RA-01 / RA-02 | £2.13 | 433MHz SX1278 LoRa Transceiver Modules | Buy |
| PMS5003 | £10.33 | Plantower Laser Air/Partical/Dust Sensor | Buy |
| SHT30 | £1.23 | Temperature / Humidity Sensor | Buy |
| CCS811 | £8.60 | CO2 Sensor Module | Buy |
| SSD1306 | 1.16 | 0.91" 128x32 Pixel Display | Buy |
Pinout - Transmitters
Plantower PMS5003 Partical Sensor
| PMS5003 | D1 Mini |
|---|---|
| Pin 1 | VCC 5V |
| Pin 2 | GND |
| Pin 5 TX | D4 (RX) |
LoRa RA-02
| RA-02 | D1 Mini |
|---|---|
| GND | GND |
| 3.3V | VCC 3.3V |
| RST | D3 |
| D100 | D8 |
| NSS | D0 |
| MOSI | D7 |
| MISO | D6 |
| SCK | D5 |
SHT3X-DIS Temp/Humidity Sensor
| SHT3X-DIS | D1 Mini |
|---|---|
| GND | GND |
| VCC | VCC 3.3V |
| SCL | D1 |
| SDA | D2 |
CCS811 Co2 Sensor
| CCS811 | D1 Mini |
|---|---|
| VCC | VCC 3.3V |
| GND | GND |
| SCL | D1 |
| SDA | D2 |
| WAKE | GND |
LCD SSD1306 128x32 i2c
| LCD | D1 Mini |
|---|---|
| VCC | VCC 3.3V |
| GND | GND |
| SCK | |
| SDA | D2 |
Pinout - Wemos D1 Perspective
| Board | Physical | Component |
|---|---|---|
| D0 | 16 | NSS LoRa |
| D1 | 5 | SCL SHT, SCL CCS811 |
| D2 | 4 | SDA SHT SDA CCS811 |
| D3 | 0 | RST LoRa |
| D4 | 2 | TX Partical |
| D5 | 14 | SCK LoRa |
| D6 | 12 | MISO LoRa |
| D7 | 13 | MOSI LoRa |
| D8 | 15 | Dio0 LoRa |
| 3.3V | - | LoRa, SHT |
| 5.0V | - | Partical |
| GND | - | Lora, SHT, Partical |
| TX | 1 | |
| RX | 3 |
Pinout - Raspberry Pi Perspective
- N.B. Using Physical Pin Numbering
| Raspberry Pi (Physical) | Component | Component Pin |
|---|---|---|
| 3.3V | LoRa SX1278 | 3.3V |
| GND | LoRa SX1278 | GND |
| 15 | LoRa SX1278 | Dio0 |
| 23 | LoRa SX1278 | SCK |
| 24 | LoRa SX1278 | NSS |
| 21 | LoRa SX1278 | MISO |
| 19 | LoRa SX1278 | MOSI |