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  1. chopnhack

    Rain Sensor Status

    Ah, sorry - I forgot that one side is the phase and one side is the neutral and I would do well to determine which is which when I solder them onto the board! If I soldered the neutral to D1's anode and the phase to the ground plane I assume I could blow out the cap? I hope tomorrow brings me...
  2. chopnhack

    powering a windshield wiper motor - please help me out on this one.

    You might be able to find out the max working load of the motor by checking a wiring diagram of said vehicle. The motor may be on a fuse or even a fusible link. The rating of that item would certainly be in excess of required amperage of the motor. You could also connect a multimeter in series...
  3. chopnhack

    Rain Sensor Status

    Should I create the common ground plane after the diode? It seems to me that the common of the 28VAC input (see lower left corner) can also go positive - potentially affecting the coil of the relay and draining the capacitor's negative terminal. I don't think it would affect the LED's since they...
  4. chopnhack

    Rain Sensor Status

    LOL, good cover ;-)
  5. chopnhack

    Rain Sensor Status

    Learning curve ;-)
  6. chopnhack

    Rain Sensor Status

    Whatta newb... :oops::rolleyes: So there was nothing wrong with the relay - sorry digikey! New relay came today - talk about fast!! I tested it and heard it click. De-soldered the old one and it too clicked... Inspected the board and realized that it was mirrored!!!! Damn... I first had it...
  7. chopnhack

    Too many opportunities for spending....

    Buy some small things so you don't feel stymied, the token effect will make you feel somewhat satisfied while sparing your pocketbook. Be wary, purchases are rarely satisfying long term, experiences trump spending any day.
  8. chopnhack

    Technical Management

    What is your background in electronics? What education in such have you attained or attended any specialized training?
  9. chopnhack

    Technical Management

    I thought you were responsible for debugging? Now you write the specs for them? What exactly is your position and title?
  10. chopnhack

    Rain Sensor Status

    It's gotta be - It just poured - I checked the rain switch and it is currently wet status - open circuit across the rain switch and no potential across the coil. I will email Digi-Key now :) Thanks for the help troubleshooting. Digi-Key was fantastic. Explained about the part, no questions...
  11. chopnhack

    Rain Sensor Status

    Surgery complete, patient dead... LOL I took out one lead of the rainswitch at the Y trace below. I put the resistor in series and connected the r.switch. leg that was removed to the right on the other side. Potential across the coil is 26VDC - no change - the relay is still in its NC position...
  12. chopnhack

    Rain Sensor Status

    With any luck, if I get some time tomorrow, perhaps I can do a little surgery to that board and add in the resistor. I will keep you posted. RE: the PIC - shivers - I can only imagine what gremlins will crawl out of that project, LOL - for sure, I will turn it on the first time from the panel...
  13. chopnhack

    Rain Sensor Status

    No worries mate, even simple projects fall apart around me ;-) I don't think it has a diode built in - part number 399-11037-5-ND. I don't have access to 24VDC to check, but I have a 1/4w resistor. 1k5 value ok? Yes the coil measures 3k, which is close enough to the spec of 2.88k +/- 10% If it...
  14. chopnhack

    Rain Sensor Status

    LOL @ me Apparently I wasn't awake when I wrote this - there is no RMS with DC :oops::rolleyes: If I am getting 37 VDC across the coils I am exceeding the relay's capability. The rating is for 30vDC. The resistance in the coil checks out against the spec sheet, so the relay's coil is...
  15. chopnhack

    Rain Sensor Status

    Sensor dry, contacts closed - green LED still on. 37VDC across coil of relay - relay still stuck in NC positions! Apparently the relay is dead. I am going to see if Digikey will replace it for me. Edit - Before I contact them I realized that if there is 37VDC across the terminals of the coil...
  16. chopnhack

    RadioShack Electronics Learning Lab and Sensors Lab

    I thought that was replaced by the entabulator some time ago?
  17. chopnhack

    RadioShack Electronics Learning Lab and Sensors Lab

    From what I have read and from what more advanced members on the site are stating, its a tomaytoe/tomahtoe type thing. Its a matter of perspective since you can't have current without potential ;-) Here is some information if you want to read. The posts more than the linked website.
  18. chopnhack

    Rain Sensor Status

    Negative! LOL It's mounted fairly high up with the wiring run through the eaves and then a crawl space - not impossible, but highly unlikely to be redone ;-) The high today was 96 deg and it was sunny. The position of the rain clik is on the southwest corner (not ideal per the manufacturer, but...
  19. chopnhack

    Rain Sensor Status

    Indeed, but I doubt Hunter would provide any information to that end! Most companies don't support unauthorized utilization of their products. I can get a resistance value when it dries out (should have been dry already?). I will try and take a reading tomorrow morning. I think the arcing...
  20. chopnhack

    Bug-finding

    From an end user perspective, I have noticed this frequently, especially on multi-terminal, distributed databases. The more file access requests occurring from multiple points the slower the system responds. Try accessing the same records from multiple terminals as well... some systems when...
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