Raspberry Pi Project: IOT Humidity Temperature
IOT Humidity Temperature adalah projek yang membaca sensor DHT22, kemudian menghantar bacaan humidity dan suhu ke internet. Data disimpan di dalam hosting dalam bentuk MySQL. Bacaan IOT Humidity Temperature boleh dilihat di http://shahrulnizam.com/iot/humidity-temperature.php. Bagi versi ESP32, boleh rujuk ESP32 IOT Humidity Temperature.
Skematiknya adalah seperti berikut.
PCB komponen layout nya adalah seperti berikut.
| No | Component | Label | Unit |
|---|---|---|---|
| 1 | 015 PCB RPi Relay Switch (100mm X 81mm) | PCB | 1 |
| 2 | Capacitor SMD1206 0.1uF | C3 | 1 |
| 3 | Capacitor SMD1206 10uF | C1-C2 | 2 |
| 4 | DC Jack Female | DC Jack Female | 1 |
| 5 | DC-DC Recom 5V 2.5W | 7805 | 1 |
| 6 | Diode SMD1206 1N4001 | D1 | 1 |
| 7 | IC PIC12F1840 SOIC | PIC12F1840 | 1 |
| 8 | IC ULN2803 SOIC | ULN2803 | 1 |
| 9 | IDC Socket 40 ways | RPi | 2 |
| 10 | LED SMD Red 3.2mm X 1.6mm | LED1-LED4 | 4 |
| 11 | Micro SD Card 4GB | RPi | 1 |
| 12 | Mosfet IRF540 TO263 | Q1 | 1 |
| 13 | OLED | OLED | 1 |
| 14 | PCB Connector Header (Right) 3 Ways | SEN1 | 1 |
| 15 | PCB Connector Housing 3 Ways | SEN1 | 2 |
| 16 | PCB Stand (screw nut) | PCB Stand | 4 |
| 17 | Push Button 4 pin 6x6x1 | PB1-PB5 | 5 |
| 18 | Raspberry Pi Zero WH | RPi | 1 |
| 19 | Relay 12V SPDT | RLY1-RLY4 | 4 |
| 20 | Resistor SMD1206 0.25W 1K | R1-R6 | 6 |
| 21 | Sensor DHT22 | SEN1 | 1 |
| 22 | Straight Pin Header (Male) | RPi | 1 |
| 23 | Straight Pin Header (Male) | ICSP | 1 |
| 24 | Terminal Block 2 Way | PWR | 1 |
| 25 | Terminal Block 3 Way | OUT1-OUT4 | 4 |
| 26 | Terminal Pin | SEN1 | 6 |
Harga projek RPi IOT Humidity Temperature adalah RM560 tidak termasuk bantuan teknikal. Di bawah adalah cara projek ini berfungsi.
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