Add the LTR390UV sensor to your ESP32 Meshtastic node to watch UV index in actual time. Get correct daylight, well being, and environmental UV knowledge over LoRa with easy wiring and low-cost {hardware} for safer outside actions.
Combine an LTR390UV ultraviolet gentle sensor into your ESP32-based LoRa Meshtastic Node for UV index monitoring, solar security monitoring, and environmental UV measurements.
{Hardware}
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What’s the LTR390 UV Sensor?
The LTR390UV is a compact digital sensor that measures ultraviolet (UV) gentle and ambient brightness. It’s generally utilized in climate stations, wearables, and IoT tasks to watch solar publicity and calculate UV index values, serving to folks keep secure open air.
Key Options:
- Measures UV gentle for UV index monitoring
- Detects ambient gentle (brightness)
- I²C communication for straightforward integration with microcontrollers
- Low energy consumption, excellent for battery-powered gadgets like Meshtastic
- Works with 3.3V techniques like ESP32 and nRF52840
- Small, light-weight kind issue
- Constructed-in temperature compensation for secure readings
Meeting
The {hardware} is all prepared and set now to the wiring. For this, we are going to observe the next Schematics.
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Please consider we’re assuming right here you already soldered the headers on the board so it will likely be a matter of connecting pins to the fitting place.
LTR390 UV Sensor – Heltec V3 Lora ESP32
Wiring Connections:
- VIN -> 3.3V
- SCL -> PIN 42
- SDA -> PIN 41
- GND -> GND
- INT -> Elective GPIO (for interrupt operation)
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For boards different, use the I²C SDA/SCL pins as outlined within the board documentation.
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Vital Sensor Placement: The sensor MUST have direct publicity to sky/daylight for correct UV readings. UV gentle can not penetrate most plastics or glass. Mount externally or use UV-transparent supplies.
Meshtastic Settings
- Open Meshtastic App
- Go to Settings → Telemetry (Sensor)
- Toggle Allow Setting Metrics
- Press Save
In conclusion, the LTR390UV provides a pleasant well being and security monitoring to your Meshtastic Node by monitoring ultraviolet radiation ranges. Whether or not you are constructing a climate station, making a solar security gadget for outside actions, or monitoring UV for agricultural or scientific functions, the LTR390UV gives good and reasonably priced UV sensing. Keep in mind that correct sensor placement is vital – UV gentle can not penetrate most enclosure supplies, so exterior mounting or UV-transparent home windows are important for correct readings. With UV-related pores and skin harm affecting hundreds of thousands globally, having real-time UV knowledge out of your mesh community may also help defend customers from overexposure.
