Extensive functions Dew Controller (DIY project), standalone, remote, real time control, twin channels, based on Arduino Nano. Fully automatic operation. For $48 or less, DS18B20 temperature probes, DHT11/21/22/33/HTU21D sensor support, LCD1602/2004 support, optional bluetooth, etc.
(c) Copyright Robert Brown 2014-2017. All Rights Reserved.
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. Schematics, Code, Firmware, Ideas, Software Applications (Windows drivers), Layout are protected by Copyright Law.
Code or portions of code may not be copied or used without appropriate credit given to author.
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| Website |
https://arduinonanodewcontrollerpro.sourceforge.io |
| Tags |
AstronomyEmbedded systemsHardware |
| License |
Creative Commons Attribution Non-Commercial License V2.0
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| Platform |
Windows
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| Features |
- Supports standard dew straps such as DEW NOT via PWM output, 12VDC
- Supports 2 independent controlled dew channels (3 on v300)
- Supports 2 independent temperature probes DS18B20 (3 on v300)
- DHT11/21/22 and HTU21D I2C Temp/Humidity sensor support
- LCD1602 (or LCD2004) display all settings
- Optional remote control and logging via USB
- Reverse voltage protection on 12VDC input
- Each dew channel powered by TIP120 (inbuilt reverse protection)
- 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
- Three tracking algorithms, DewPoint, Ambient and MidPoint with adjustable band offsets
- Key session state values saved in EEPROM for later retrieval
- 12VDC cooling fan support, speed PWM controlled with RGB LED indicator
- LEDS indicate if PWR is on to dew channels (brightness indicates % pwr applied)
- Low cost
- Windows application for remote control/logging, auto update of controller parameters
- FULLY AUTOMATIC OPERATION - NO USER INTERVENTION REQUIRED
- Can be controlled or monitored remotely via USB connection
- Data logging of parameters to CSV file
- Calibration setting for each temperature probe
- Optional Bluetooth wireless support - July 2015
- MOSFET Upgrade - May 2016
- DO NOT DOWNLOAD SOFTWARE FROM OTHER SITES AS AN EXE/ISO/ZIP FILE - THESE FILES ARE NOT SUPPORTED AND MAY CONTAIN MALWARE
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