نقد و بررسی اجمالی
ماژول سنسور اندازه گیری دما و رطوبت با رابط I2C،دوسیمه
Temperature Humidity Sensor Accuracy
دریافت دیتا شیت
ماژول sht30 جهت اندازه گیری دما و رطوبت می باشد که با ولتاژ 2.4 تا 5.5 ولت راه اندازی میگردد.
دقت اندازه گیری این سنسور برای رطوبت 2 درصد و برای دما 0.3 درجه سانتی گراد میباشد.
رابط کاربری ماژول i2c هست که بروی ماژول توسط دو مقاومت 10 کیلو اهم پول آپ شده است. بر روی ماژول 2 پین دیگر با نام AL و AD وجود دارد.
پایهAD یا همان ADR جهت ادرس ماژول برای i2c میباشد که حالت عادی توسط مقاومت 10 کیلو اهم پول دون شده است و حالت عادی ادرس ان 0x44 بوده و با یک کردن این پایه ادرس 0x45 تغییر میکند.
پایه دیگه AL هم خروجی هست که قابلیت تعیین الارم و هشدار توسط سنسور وجود دارد.
Sensiron Temperature/Humidity sensors are some of the finest & highest-accuracy devices you can get. And, finally we have some that have a true I2C interface
for easy reading. The SHT30-D sensor has an excellent ±2% relative humidity and ±0.3°C accuracy for most uses
Unlike earlier SHT sensors, this sensor has a true I2C interface, and (bonus!) even with two address options. It also is 3V or 5V compliant, so you can power and communicate with it using just about any microcontroller or microcomputer
Such a lovely chip - so we spun up a breakout board with the SHT30-D and some supporting circuitry such as pullup resistors and capacitors. Each order comes with one fully assembled and tested PCB breakout and a small piece of header. You'll need to solder the header onto the PCB but it's fairly easy and takes only a few minutes even for a beginner
Power Pins
Vin - this is the power pin. The chip can use 2.5-5VDC for power. To power the board, give it the same power as the logic level of your microcontroller - e.g. for a 5V micro like Arduino, use 5V. For a 3.3V controller like a Raspbery Pi, connect to 3.3V
GND - common ground for power and logic
I2C Logic pins
SCL - I2C clock pin, connect to your microcontrollers I2C clock line
This pin has a 10K pullup resistor to Vin
SDA - I2C data pin, connect to your microcontrollers I2C data line
This pin has a 10K pullup resistor to Vin
Other Pins
ADR - This is the I2C address selection pin. This pin has a 10K pull down resistor to make the default I2C address 0x44. You can tie this pin to Vin to make the address 0x45
RST - Hardware reset pint. Has a 10K pullup on it to make the chip active by default. Connect to ground to do a hardware reset
ALR - Alert/Interrupt output. You can set up the sensor to alert you when an event has occured. Check the datasheet for how you can set up the alerts