Thanks for posting this! I am thinking of trying to automate our Mitsubishi heat pump with an Arduino as well! Did you ever go through and try to decode the full IR protocol (e.g. what the individual codes are for each parameter)?
How are you using the Arduino?
I have started to document what I have done in order to decode the bit pattern from the Heat Pump - still a work in progress but should be of value to you.
if its not crowbaring the power supply it will be fine, as far as protection you want to throw a diode across the solenoid ( cathode to + side, anode to - side) so it wont spit out back EMF on your power lines causing spikes and noise
Thanks for the info - any ideas on the spec of the diode? or maybe a part # for me to look into?
Thanks for the tip - I right clicked on the Arduino MEGA 2560.inf and selected install and then it installed.
Funny how when I told Windows to go to the Arduino\Drivers folder it did not find anything?
But I am now away under Windows 8 so thank you for the advise.
ps: I have also enabled the unsigned driver option in Windows.
This method does not require new driver files or installation of a test signature.
1. Windows Key + R 2. Enter shutdown.exe /r /o /f /t 00 3. Click the "OK" button 4. System will restart to a "Choose an option" screen 5. Select "Troubleshoot" from "Choose an option" screen 6. Select "Advanced options" from "Troubleshoot" screen 7. Select "Windows Startup Settings" from "Advanced options" screen 8. Click "Restart" button 9. System will restart to "Advanced Boot Options" screen 10. Select "Disable Driver Signature Enforcement" 11. Once the system starts go to Arduino/Drivers folder and right click on the Arduino device you have and select install.
I came across some more videos on YouTube and this one (source included) looks interesting...
Main Features: •5 separate LED Channels for White, Blues, Royal Blues, UV, and Red •6th Channel for a Sump/Refugium LED Light •7th Channel devoted to a Real Time Lunar Cycle •Advanced LED testing features •Water & Heatsink Temperature Sensors •Control of a Heater and Chiller •Audible & Visual Alarm Notices for Defined Temperature Variances •LED Heatsink Temperature Sensor •Dynamic Speed Control for Heatsink Fans (Display & Sump Lights) •Wave Maker / Powerhead control •Automatic Fish Feeder •24HR & 12HR Time Formats AND Month DD, YYYY & DD/MM/YYYY Date Formats •Settings & Preferences stored in EEPROM (Arduino Memory)
Although mine is fresh water - most of this could be really good for me to play around with.