However, in practice it is rather easy to regulate the humidity manually Another possibility is a comparator opamp and a resistive humidity sensor. Simple, get a DHT11 or DHT22, an Attiny85, a BC547, a 5 V relay and a USB humidifier and let the Attiny regulate the humidity get the TinyDHT lib from Adafruit. So you want this fully automated to? After you built this and are happy with it, you feel like it would be cool to also be able to regulate the humidity, rather than just monitor it, but you don't want to build the arduino version as you already have a good working thermostat. The fan can either be switched together, or always be onīasically your Incubator is now ready for use, but an egg tray/turner would be handy. Once you have set the desired parameters use the relay contact to switch your heat source (lamp). when it shows'-', it is high temperature protecting when it shows 'HH', the temperature is out of the measuring range, the relay will be shut down. When the display shows 'LL', the sensor is open. When is alarm activated display not showing temperature only –. P6-High temperature Alarm The menu P6 initially turns OFF to ON and press the SET,then set the temperature at which the alarm is activated.P5-Delay starting time: In this step, you set the start delay in minutes 1-10 min.If you set 1min relay is activated until one minute after reaching the set temperature.The other P settings are best left untouched (especially P6), but here is their function Press SET again to confirm Press the SET button till you get P1: Hysteresis The hysteresis sets the difference between the on and off temperature and has to prevent the relay to continously switch on and off. Press the '+' button till the 'C' becomes an 'H' ( for Heater). Most likely the display will show a 'C' (for Cooler). You need to change that Press the SET for 5 secs button until P0 appears in the display. In factory setting, the device is most likely set as a cooler rather than a heater. The measured temperature will start flashing and you can set that to the desired switching temperature with the '+' and '-' keys. This is the way to set it:įirst set the temperature: Press the SET button for 2 sec. The W1209 thermostat can be used to cool as well as to heat. I mounted the thermostat on a piece of cardboard that I attached to the box at an angle for easy reading. The Thermostat needs 12 Volt, mainly for the relay and has a 5 Volt regulator for the rest of the circuit. For who is interested, there is also an ATMEGA-8 version on a Russian alcoholdistiller site. This thermostat is basically an NTC with an 8 bit STM8S003F3P6 microprocessor, a display and a relay. The Hygrometer will not control the humidity but at least give info about it and the 1/240 RPM motor can be left on continuously as it will slowly turn the eggs so they make a full turn every 4 hours The Thermostat will control the temperature. The simplest way to make a nearly full automatic incubator is with the following components
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |