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  • Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

Recent content by MrZenite

  1. M

    Frying Arduino Uno boards

    I went cheap. Two rubber bands and two pieces of wooden dowel. One piece held to the other with the rubber bands that set the tension. The dowels are held in a lab stand. I adjust the tension by how tight the rubber bands are wound. Cheap and effective. I am using one sixth hp motors...
  2. M

    Frying Arduino Uno boards

    for all you yarn handlers out there, here is a picture of my yarn winder that shows the mechanical layout pretty well. The long horizontal metal item in the back is a jack screw with follower. The follower has a yarn guide on it to move the yarn back and forth across the moving yarn spool.
  3. M

    Frying Arduino Uno boards

    I did run again this afternoon, and this time I wound for over 10 mins with no problems. Looks like this problem is behind me! Great Solution everyone!
  4. M

    Frying Arduino Uno boards

    I did run last night after making the changes I talked about earlier, and successfully ran out the small ball of yarn I had. Total run time about 5 mins. No problems, and that was on the Legoo board that had failed but recovered after I hit the reset. I will run a larger spool today, but we...
  5. M

    Frying Arduino Uno boards

    I have completed the changes I think are most critical based on the previous discussions. I have added 5k resistors to the lines between the limit switches and the Elegoo board, I have cut the 0 V bus between the 12 V power supplies, and the 5 V supply. I connected the 0 V part of the 5 volt...
  6. M

    Frying Arduino Uno boards

    Bought the motors from Amazon too so I should be able to dig out some data. Will post Sunday.
  7. M

    Frying Arduino Uno boards

    Attached below are eight pictures of my equipment and the local wiring. I havre not made suggestedchanges yet. will start them in the morning now that pictures are uploaded
  8. M

    Frying Arduino Uno boards

    I realize the motor relays may not last long, but willing to pay that price. I just looked at the relays and they are rated for 1/2 hp A/C motors. The motors are rated 1/6 th hp, and are running under essentially no load. If I had to do it again I would look for 1/20 hp motors. But they cost...
  9. M

    Frying Arduino Uno boards

    I will post some pictures of the relays after dinner tonight. Your changes look very reasonable, and consistent with what others are saying, so at a minimum I will implement them including resistors in the limit switch lines. Last time I ran, I had some LEDS across the motor relay lines to see...
  10. M

    Frying Arduino Uno boards

    SPDT is a single pole, double throw relay. Earlier in the thread, the specific identification of this device was listed, It is a spongle branded relay that is normally open and goes closed on a low voltage input. It has three output terminals and three inputs. One input is the signal wire...
  11. M

    Frying Arduino Uno boards

    Ok, everyboody, the schematic and INO file (the Legoo Code) are attached, The schematic is unique to me so this is the original. There is a bit more wiring to run the motor that turns the winder, but that is separated from this stuff, and the only logic to it is a start signal from the Legoo...
  12. M

    Frying Arduino Uno boards

    I will get the schematic out tomorrow, but it looks like the Legoo and Songle references are pretty solid, both were purchased from Amazon. I am using a slightly different wiring diagram for the DPDT switch that involves a crossover wire, but I like your approach better, and thus will go to it...
  13. M

    Frying Arduino Uno boards

    I will answer the two questions in order received: I am using a knockoff of the Arduino that I bought from Amazon it is branded "Elegoo" and is supposed to be electrically equivalent to the Arduino uno. The software compiler does recognize it as an Arduino Uno. These are 1/2 the price of the...
  14. M

    Frying Arduino Uno boards

    I am working on a schematic and will post it this weekend. I am somewhat limited by having had surgery on one shoulder a few weeks ago, and the arm is held in fixed position to avoid injury. In the meantime I am working with only one hand (my dominant one happily) to do the sketch with. As...
  15. M

    Frying Arduino Uno boards

    Since I am reversing current (polarity) in the leads that feed the motor there is no fixed anode and cathode wires. Thus no preferred direction for the diode. Can I use a small capacitor across these leads to absorb the spike? The motor is one sixth hp running 12 volts and I believe it has...

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