![]() Here is nice datasheet (because of my reputation i couldn't post more than 2 links. This is a cheap, digital humidity and temperature sensor with 4 pin. Now you can feed your positive terminal/s from output of regulator. If you read pic16f877a and dht11’s datasheets, you learned that they working with 5V but our battery is 9V.Īs you can see above you can easily regulate your voltage. So, if I connect 5V to A-0 then B-0, C-0, D-0 and E-0 have same voltage. Numbers represent the columns which are connected with each others. And inner part of it, there are letters and numbers. ![]() You can figure out this via looking at the red and blue lines on the breadboard. Some kind of breadboards have positive or negative line through the board, on the other hand the other types’ power and ground lines might be diveded in two. Before we start you should refill your cups it might be a little long. So, below I will explain my little challange step by step. When i start to research I don’t have any knowledge about how to set up a circuit or how can i embed a code in a microcontroller unit and many similar question. A couple of weeks ago i wanted to set up a simple circuit, which is going to measure humidity and temperature level in air.
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