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Std edition OpenAirMonitor
Profile：The OpenAirMonitor is a solar-powered, outdoor air quality monitor that transmits data over LoRaWAN and Bluetooth LE. It measures particulates (PM1, PM2.5 and PM10), humidity and temperature. The monitor has a STEMMA QT connector, so can be extended with other sensors.
License: CERN Open Hardware License
Description
Work in progress
The monitor is programmed in JavaScript over Bluetooth LE using Espruino.
The following components can be connected to the PCB:
- PMS7003 particulate matter sensor
- 868MHz (EU/UK) SMA antenna
- 3.7V LiPo battery, e.g. this 6600mAh battery
- 6V solar panel
- SHT40 temperature & humidity sensor using STEMMA QT connector
design drawing
schematic diagram
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PCB
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| ID | Name | Designator | Footprint | Quantity |
|---|---|---|---|---|
| 1 | KH-SMA-K513-G | 868MHZ | ANT-TH_KH-SMA-K513-G | 1 |
| 2 | AZ1117CH-3.3TRG1 | AZ1117C | SOT-223-3_L6.5-W3.4-P2.30-LS7.0-BR | 1 |
| 3 | PH2.0-2PWB | BAT,SOLAR | CONN-SMD_2P-P2.00_PH2.0-SPWB | 2 |
| 4 | K2-3.6×6.1_SMD | BOOT1 | KEY-SMD_2P-L6.2-W3.6-LS8.0 | 1 |
| 5 | 4.7u | C3,C8 | C0603 | 2 |
| 6 | 4.7uF | C4 | CASE-A_3216 | 1 |
| 7 | 100nF | C5 | C0603 | 1 |
| 8 | 10uF | C6 | CASE-A_3216 | 1 |
| 9 | 22uF | C7 | CASE-A_3216 | 1 |
| 10 | 100uF | C9 | C1206 | 1 |
| 11 | 22u | C10,C11 | C0805 | 2 |
| 12 | LED-0603_R | CHARGE | LED0603_RED | 1 |
| 13 | LED-0603_G | DONE | LED0603_GREEN | 1 |
| 14 | FP6277XR-G1 | FP6277 | SOP-8_L4.9-W3.9-P1.27-LS6.0-BL-EP | 1 |
| 15 | 2.2uH | L2 | L1008 | 1 |
| 16 | Lora-E5 | LORA-E5 | LORA-E5 | 1 |
| 17 | 2343U | PMS7003 | HDR-TH_10P-P1.27-V-R2-C5-S1.27 | 1 |
| 18 | 1k | R1,R2 | R0603 | 2 |
| 19 | 330 | R3 | R0603 | 1 |
| 20 | 2k | R4 | R0603 | 1 |
| 21 | 30k | R5 | R0603 | 1 |
| 22 | 100k | R6 | R0603 | 1 |
| 23 | 22 | R7,R10,R11 | R0603 | 3 |
| 24 | 75k | R8 | R0603 | 1 |
| 25 | 10k | R9,R12,R13 | R0603 | 3 |
| 26 | 300k | R14 | R0603 | 1 |
| 27 | STEMMA_I2C_QT | STEMMA-QT1 | JST_SH4 | 1 |
| 28 | HDR-F-2.54_1x4 | SWD1 | HDR-F-2.54_1X4 | 1 |
| 29 | CN3063 | U3 | SOIC-8_L5.0-W4.0-P1.27-LS6.0-BL-EP | 1 |
| 30 | E73-2G4M04S1B | U5 | WIRELM-SMD_E73-2G4M04S1B | 1 |
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