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myDewControllerPro2 Fritzing Parts List.xls 2019-06-17 29.7 kB
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ReadMe.txt 2016-02-28 2.7 kB
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Totals: 5 Items   3.5 MB 0 
A DIY project for a very sophisticated, feature rich two-channel automated dew controller, based on Arduino Nano

Author	Robert Brown
Date	August 2014
Email 	brown_rb@yahoo.com
All rights reserved
v2.66

DISCLAIMER
This project is released into the public domain as is where is, with no obligation or responsibility accepted on the part of the author, for any mishaps or failures caused by this product or use of this product. Users intending to use this project or code do so at their own risk and usage of product and code is deemed to be acceptance of those risks.

In other words, the author accepts no responsibility to damage caused to any equipment or goods or self by using the ideas, schematics and code associated with this project, or loss of income or all other losses that may be incurred.

RELEASE
The schematic, code and ideas are released into the public domain. Users are free to implement these but may NOT sell projects based on this project for commercial gain without express written permission granted from the author. 

OVERVIEW
This is a very powerful, feature rich, DIY Dew Controller based on an Arduino Nano, bread boarded and enclosed in a project hobby box. It provides numerous features not currently found in many professional systems on the market today. 

SPECIFICATIONS
•	Supports standard dew straps such as DEW NOT via PWM output, 12VDC
•	Supports two independent controlled dew channels
•	Supports two independent temperature probes DS18B20
•	LCD1602 (or LCD2004) display of all settings
•	Optional remote control and logging via USB 
•	12VDC@5A PSU required
•	Reverse voltage protection on 12VDC input
•	Each dew channel powered by TIP120 medium power Darlington (inbuilt reverse protection)
•	TIP120 transistors support up to 2.5A to each strap (recommend using TO-220 heat-sink) 
•	Dew channels (2 supported) are PWM adjusted depending upon dew point/algorithm
•	Controller automatically adjusts power to dew straps (0, 10%, 20%, 50%, 75%, 100%) as required
•	Supports manual override switches to boost PWM power to 100% for each dew channel
•	Supports remote control via serial port or Windows Application
•	Temperature/Humidity Sensor uses DHT11 (or DHT21/22 for higher accuracy)
•	LEDS indicate if PWR is on to dew channel (brightness indicates % pwr applied)
•	12VDC cooling fan support, speed PWM controlled with RGB LED indicator
•	Key session state values saved in EEPROM for later retrieval
•	Three tracking algorithms, DewPoint, Ambient and MidPoint with adjustable band offsets
•	Optional data logging of parameters to CSV file
•	Optional calibration for each channel temperature probe
•	Optional remote control via Bluetooth
Source: ReadMe.txt, updated 2016-02-28