This is a challenge issued by friends and family. The goal here is to make a robot that can bring beverages from another area to wherever the people are , allow the person to get their drink , then leave. It does not need to be fully autonomous , even remote control is acceptable. It does not need to grab them from the fridge, preloaded beverages are acceptable. This is Ez Robot though, I believe we could do better than that! Well anyways to start the project off I am using a roomba base. I picked up a stainless steel trash can last night as a outside casing. I will show you the rest as we go
By jstarne1
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Looks like the project is coming along great. Were you planning on just using the battery power for locomotion? When its on its docking/charging station it will engage the cooling system to make the most of the battery life.
Yes that's the idea. I am open to using the battery and small 120 watt inverter to power it at a party or cookout but 99 percent of the time the cooling could be done by the dock connections.
update checked the thermometer at the top by the evaporator. About 5 degrees! Now we are talking. Also take in mind the mercury started moving up the moment I picked it up and I had to wipe it on my pants to read it clearly from the frost. I'm sure that warmed it up. This has plenty of power to do what I want.... Cool a 24 pack of beer! Or 4 wine bottles or 12 long necks.
I'm super happy with today's find! I technically have not started back building but this find and the tests were very important for the future success and wow factor of the project.
Awesome news Josh!
Videos for installing a compressor. Lots of brazing which is really manly soldering
https://www.youtube.com/watch?v=5dUdYqAqkZk&feature=youtube_gdata_player
After watching the process for charging the system I may consult a professional with the tools to make sure I do the same quality job you would expect in a household appliance and most importantly reliability and safety! The next steps are gutting this perfect fridge and building mounts for it under the chiller section. This will require a frame I'm sure so I will take my time next weekend on it. Just for now I get to enjoy tearing it apart. I will post a video.
Here's a guy who did this really quick and easy , he used a automotive adapter and a freon R134a can to fill the compressor. My system as it is only holds 2.3 ounces but I may need to adjust that based on pressure if the volume of the lines is reduced significantly when I install it in the robot
https://www.youtube.com/watch?v=SsF4gqbcSV4&feature=youtube_gdata_player
Nice on the fly adjustment and modification. I can't wait to see this thing in action. Hopefully I can get back to my bots soon, but it has been a crazy summer. First the move, then I had to put my dog down, then my father-in-law died, then my daughter's fiancee committed suicide by jumping in front of a semi truck on the freeway. I haven't had time to think. It has been so nice for me to come on this forum and see what everyone else is doing. It keeps me in touch at least.
Anyway - good luck on the new refrigeration unit.