Room temperature meter (DHT11 + MAX7219 + Arduino pro mini)
INTRODUCTION Temperature is one of the important parameter and it needs to measured and monitored in many systems. Finding a perfect temperature sensor that satisfies your projects need is very important, for example if you need to measure body temperature in a medical system then you may need a temperature sensor that is sensitive to small changes. On other hand if you want to measure room temperature then you may not need that much of a sensitive sensor, DHT 11 would be a perfect sensor for that. What is DHT 11 sensor? A DHT 11 (pronounced DHT eleven) is a temperature and humidity sensor. The sensor module consists of a temperature sensor and humidity sensor connected to a 8-bit microcontroller. The sensors are calibrated to give accurate readings. It's small size and low power consumption makes it ideal for projects. There are some precautions we need to take while using this sensor like, 1. The soldering temperature must be less than 260 Cel...