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ada4831，LTR390 UV Light 紫外線感測器 - STEMMA QT / Qwiic
Adafruit LTR390 UV Light Sensor - STEMMA QT / Qwiic (ada4831)
Description 描述
The LTR390 is one of the few low-cost UV sensors available, and it's a pretty nice one! With both ambient light and UVA sensing with a peak spectral response between 300 and 350nm. You can use it for measuring how much sun you can get before needing to covering up.
LTR390 是少數幾種低成本紫外線感測器之一，而且非常好！具有環境光和 UVA 感應功能，峰值光譜響應在 300 至 350nm 之間。您可以用它來測量在需要遮蓋之前可以曬到多少太陽。
Unlike the Si1145, this sensor will not give you UV Index readings. However, the Si1145 does UV Index approximations based on light level not true UV sensing. The LTR-390, in contrast, does have a real light sensor in the UV spectrum. It's also got a much much simpler I2C interface so you can run it on the Arduino or Python microcontrollers/microcomputers with ease. Unlike the GUVA analog sensor, the biasing and ADC is all internal so you don't need an ADC.
與Si1145不同，此感測器不會提供紫外線指數讀數。然而，Si1145 根據光照水平而不是真正的紫外線感應來估算紫外線指數。相比之下，LTR-390 確實有一個紫外線光譜中的真正光感測器。它還具有更簡單的 I2C 接口，因此您可以輕鬆地在 Arduino 或 Python 微控制器/微型計算機上運行它。與GUVA 類比感測器不同，偏壓和 ADC 都是內部的，因此您不需要 ADC。
To make using it as easy as possible, we’ve put the LTR390 on a breakout PCB in our Stemma QT form factor with a sprinkle of support circuitry to give you options when testing. You can either use a breadboard or the SparkFun qwiic compatible STEMMA QT connectors, and compatibility with 5V voltage levels as commonly found on Arduinos, as well as 3.3V logic used by many other boards like the Raspberry Pi or our Feathers. QT Cable is not included, but we have a variety in the shop for quick plug-and-play support.
為了盡可能簡單，我們將 LTR390 放在Stemma QT 外形的分線 PCB 上，並附帶一些支援電路，以便您在測試時提供選擇。您可以使用麵包板或SparkFun qwiic相容的STEMMA QT連接器，並與Arduinos上常見的 5V 電壓水平，以及許多其他板（如 Raspberry Pi 或我們的 Feathers）所使用的 3.3V 邏輯。不包括 QT 電纜，但我們商店中有多種電纜可供快速即插即用支援。
Technical Details 技術細節
As of October 2022 – we've updated this PCB with Adafruit Pinguin to make a lovely and legible silkscreen - you may get the new PCB or the older version with vector fonts - both are identical other than the fancy silkscreen. Additionally, this sensor breakout may come with black or tan STEMMA QT connectors. They work the same!
截至 2022 年 10 月- 我們已使用 Adafruit Pinguin更新了此 PCB ，以製作出漂亮且清晰的絲網印刷 - 您可以獲得新的 PCB 或帶有矢量字體的舊版本 - 除花哨的絲網印刷外，兩者完全相同。此外，此感測器分線盒可能配有黑色或棕褐色的 STEMMA QT 連接器。它們的工作原理相同！
Learn 學習
Adafruit LTR390 UV Sensor
示意圖
