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  1. chopnhack

    Designing a Time Delayed Relay

    Yes sir! I'm sorry, I didn't give enough information. Let me elaborate further: Because of space constraints I am only going to be able to fit one board in that box and have enough room for wiring and receptacles. Yes, I would like each box to have one 110 and 220 sensed outlet and one 110 or...
  2. chopnhack

    Designing a Time Delayed Relay

    On double checking - I had substituted another package size because I couldn't find a suitable model in the Eagle library! I'm sorry, I forgot that detail. Most of the designing and redoing of the layout is done late at night due to our time zone differences and I didn't keep revision notes... I...
  3. chopnhack

    Modifying an antique camera

    No help on the electronic side of things, but here's a link to an original ad for the camera - pretty cool.
  4. chopnhack

    PCB prototype manufacturing calculator

    I found that calculator in my travels as well, pretty nifty! I contacted Elecrow and though its not stated on their website, they can create boards using 2 and 3 oz. copper options for those that need them.
  5. chopnhack

    Designing a Time Delayed Relay

    I used one listed from the schematic. Omron brand I added one more molex 2 pin header at 110v entrance onto the board so I can wire in a rocker switch. I changed my mind on the implementation of the board and wanted to be able to shut the circuit down when not in use. My current shop outlets...
  6. chopnhack

    Designing a Time Delayed Relay

    Excellent and clearly explained, thank you!
  7. chopnhack

    Connectivity of plated through holes on double layer boards

    Having never worked with 2 layer boards before, what is the consensus on the connectivity of plated through holes on manufactured boards? My question is specifically related to a dip socket where I will not have room to solder the top side once the socket is installed. Do I trust the connection...
  8. chopnhack

    Designing a Time Delayed Relay

    I was able to squeeze in another 2 connectors! I didn't think it would be possible :) Couple of questions: What prevents arcing between the pads of P3 and P2? or for that matter the small space between the soic pins? Also, if I wanted to upgrade the board in the future for 220v use on the...
  9. chopnhack

    Designing a Time Delayed Relay

    Awesome observation, thank you! Moving the cap and res closer to the left allowed me to center the connector giving more room to create a larger plane. It's also stitched together pretty well I believe. I will download the other companies DRU and run it through the program to see if the...
  10. chopnhack

    Designing a Time Delayed Relay

    I redrew the schematic, with the trace from the emitter going down and around the X1 connector, to the outside of the relay, but it still crosses under. I think that this might be better in that its not directly between two pins of the relay, but that is just a gut response.. if it were to pass...
  11. chopnhack

    Designing a Time Delayed Relay

    Hahaha - I was wondering why so large of a hole, thanks for clearing that up :-) I fixed that on the board. I am looking at another manufacturer currently, Elecrow. Very reasonable for a hobbyist! I tried to work out the area around the relay, but I had to violate a previous rule of not...
  12. chopnhack

    Designing a Time Delayed Relay

    Changed pin 6 and yes the top and bottom layers are identical. I would be interested to see what you come up with! The via holes are 50 thou per your instruction in post# 53, I changed it to a 27 thou drill size - it was one of the standard Eagle presets. I went to upload the board to Seeed...
  13. chopnhack

    Designing a Time Delayed Relay

    I will check that out when I get closer to selecting a fabber. Here is what I was able to do with your input, let me know if I need to rework it or if I am getting closer. Very little was done with autorouter - just the thin lines - 10 thou is a bit thin for a trace, no?
  14. chopnhack

    Designing a Time Delayed Relay

    50 thou looks large for the plated through hole, should I be concerned with structural issues placing a grid around the through holes of the connectors?
  15. chopnhack

    Designing a Time Delayed Relay

    Do you mean the 8 pin for the Allegro circuit as that will have the 220, 30a passing through it vs. the relay portion will only be switching 110, ~15a? This is the part I was spec'ing (20a per pin) Thanks for the recommendation, but I think for the price I will use multiple 2 pin units! I will...
  16. chopnhack

    Designing a Time Delayed Relay

    Thank you for the suggestions Kris! The connectors were chosen because of space constraints and power handling capabilities. I will redraw and create new devices and see if I can squeeze in a 6 or 8 pin for the Allegro. The relay is switching 120v 15A - can I get away with a smaller connector...
  17. chopnhack

    Hobbyist Techniques for Reflow?

    Copper braid, I don't know whether it was the old solder or the iron itself. I fluxed the terminals just prior to applying the braid and heating the terminal, some posts would go liquid quickly, most did not. The smd's came off fairly easy - I actually had more trouble with the through hole...
  18. chopnhack

    Hobbyist Techniques for Reflow?

    I tried my hand at removing some SMD's today. It is apparent to me that my crappy iron is not up to the task - simply doesn't put out enough heat! All the videos I see, it just takes a touch, while my iron has to sit on the component for quite some time before the solder flows. I did pre tin my...
  19. chopnhack

    Custom PCB

    Kris put it in "promote" link a few days ago, that is how I found it - thanks to all posters, great info!
  20. chopnhack

    Hobbyist Techniques for Reflow?

    Maybe do opposite leads to tack in place?
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