![]() It works happily on non PWM pins too.Ĭonnect a diode 1N4007 across the relay coil in reverse bias to eliminate high voltage spikes while switching on and off. There is misconception that servo motors works only with PWM pins of Arduino, which is not true. The pin #7 (non-PWM pin) is connected to servo motor’s control wire multiple servo motors can be connected to pin #7. The pins A1, A2 and A3 used for push buttons. The pin A5 controls the relay for vaporizer and A4 for the bulb. There are 3 push buttons for setting temperature and humidity. Adjust 10K potentiometer for adjusting LCD contrast. The above circuit is for Arduino to LCD connection. Most CPU fan works on 12V but at 9V works just fine. For proper air circulation use at-least two fans pushing the air in opposite direction, for example: one of the CPU fan pushing downwards and another CPU fan pushing upwards. ![]() The DHT11 sensor is heart of the project which may be placed at the middle of any four sides of incubator (inside) but away from the bulb or humidity inlet tube.ĬPU fans can be placed as shown in the apparatus design for air circulation. If you made lot of unnecessary holes or if humidity or temperature is escaping too fast you may cover some of the holes using electrical or duct tape. The humidity control holes can be made by poking a pencil through the Styrofoam / thermocol box at the top. If you want to accommodate more eggs make more such cylinders and multiple servo motor can be connected on same control line pin. ![]() The cylinder must stay horizontal as possible, now the cylinder can rotate as the servo motor rotates.Īnd yes, use your creativity to make the things better. Insert the tooth pick inside box and paste the servo on opposite wall inside the box. On the other side poke a hole and paste a tooth pick firmly. Paste the arm of the servo motor at middle of the ice cream stick. Paste an ice cream stick on both end of the hollow cylinder such that the ice cream stick makes two equal semi circles. The rotating cylinder can be PVC tube or cardboard cylinder. The rotating cylinder must have several numbers of holes so that proper air circulation will be present and also the cylinder must be hollow on both sides. The rotation of the eggs prevents the embryo sticking to the shell membrane and also provides contact with the food material in the egg, especially at early stage of incubation. The servo motor rotates the cylinder 180 degree every 8 hours thus rotates the eggs. There is a cylinder carrying eggs with several holes around it, connected to a servo motor. The steam may be inlet from top of the Styrofoam / thermocol box as shown in the apparatus design, so that excess heat will escape though the humidity control holes and less hurting the eggs. I would recommend Styrofoam / thermocol box which will be easier to work with. The chassis of the incubator may be of Styrofoam / thermocol box or acrylic glass which can provide good thermal insulation. Now let’s understand the apparatus and design of the incubator. Once both parameters set it automatically controls the heating element (bulb) and vaporizer (humidifier) to meet the set point. You can set temperature and humidity by pressing the provided buttons and also it shows the internal temperature and humidity in real time. The kind of incubator we are going to build in this project is for hatching chicken eggs or any other bird eggs.Īll incubators have one thing in common it regulates the temperature, humidity and provides adequate oxygen supply. For example incubators are used to grow microbial organism in laboratories, incubators are used in hospitals to take care of prematurely born infants. This is to create favourable environment for the specimen under care. Incubator is an enclosed apparatus whose internal environmental is isolated from ambient environment. So let’s understand what an incubator is? (For noobs) You may use your creativity and imagination to get this project done. ![]() Imran, but some additional modification is done to make this project universally suitable for all. This project was designed as per the suggestions from Mr. ![]()
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