584,833 active members*
5,749 visitors online*
Register for free
Login

Search:

Type: Posts; User: mmcp42

Page 1 of 12 1 2 3 4

Search: Search took 0.01 seconds.

  1. Replies
    249
    Views
    62,135

    did I see someone from the UK was looking for...

    did I see someone from the UK was looking for Hall sensors
    Farnell do this one
    £0.21 each :)
  2. Replies
    249
    Views
    62,135

    I did wonder if there would be any perception of...

    I did wonder if there would be any perception of conflict of interest
    As I have a SuperPID (and very pleased with it I must say)
    and to avoid any thought that its technology may influence anything...
  3. Replies
    249
    Views
    62,135

    timmyb I strongly sugest you spend your learning...

    timmyb
    I strongly sugest you spend your learning effort with EAGLE instead of fritzing
    you can go so much further with EAGLE

    Also suggest you upgrade to the later Arduino IDE
    all the libraries...
  4. Replies
    249
    Views
    62,135

    I was recommended these...

    I was recommended these
  5. Replies
    249
    Views
    62,135

    been away for the weekend back again :) ...

    been away for the weekend
    back again :)

    couple of points
    a) looks like I neglected to notice that D3 is used for the RPM interrupt
    - so we have to re-route the board :(
    b) as others have...
  6. Replies
    249
    Views
    62,135

    Stick with transformer, 10 volts will be fine Be...

    Stick with transformer, 10 volts will be fine
    Be careful!
  7. Replies
    249
    Views
    62,135

    two answers a) cos that's what the circuit from...

    two answers
    a) cos that's what the circuit from the OP did!
    b) because the lower voltage means the following circuitry only sees a much lower voltage (~17 volts max)

    now, I would ask "why 12...
  8. Replies
    249
    Views
    62,135

    there are no dumb questions! it would be DC if...

    there are no dumb questions!
    it would be DC if it had more circuitry
    the full wave bridge rectifier (4 diodes) and the following components simply give one pulse per half cycle
  9. Replies
    249
    Views
    62,135

    Tim first off you can't use 12 volts DC, that...

    Tim
    first off you can't use 12 volts DC, that defeats the whole purpose of the entire project!

    the zero crossing part works by raising an interrupt every time the AC crosses zero (hence the...
  10. Replies
    249
    Views
    62,135

    ok here's my contribution zip with EAGLE files...

    ok
    here's my contribution
    zip with EAGLE files for a stand alone controller
    do run the ratsnest command to lay down the ground plane before you etch

    this board:
    a) untested
    b) on-board PTH...
  11. Replies
    249
    Views
    62,135

    I will use the "new" pins on a standalone board....

    I will use the "new" pins on a standalone board. Tell me more about laser etching. I'll put up the full eagle files later
    Cheers
    Mike
  12. Replies
    249
    Views
    62,135

    here's my attempt on a stand-alone pins...

    here's my attempt on a stand-alone
    pins re-assigned
    a) to make routing easier
    b) to free up SPI
    c) to free up FTDI

    enjoy
  13. Replies
    249
    Views
    62,135

    Now if I was building this from scratch,...

    Now
    if I was building this from scratch, especially if I was brewing my own 'duino, I'd change some of the pin assignments
    currently there's no (easy) way to upload software to the chip

    so
    I'd...
  14. Replies
    249
    Views
    62,135

    Eagle uses layers, if you show the tName layer...

    Eagle uses layers, if you show the tName layer you will see the names, tValues shows the values
  15. Replies
    249
    Views
    62,135

    here's the zip of the EAGLE files with LCD added...

    here's the zip of the EAGLE files with LCD added
    rather than including the LCD itself on the shield I have shown a 16-pin header

    do check the A and K connections, the original (from OP github)...
  16. Replies
    249
    Views
    62,135

    EAGLE files on the previous page I'll upload the...

    EAGLE files on the previous page
    I'll upload the LCD circuits in the morning
    it's sleepy o'clock now
    gnite
    Mike
  17. Replies
    249
    Views
    62,135

    I've updated the circuitry: a) to include the...

    I've updated the circuitry:
    a) to include the LCD
    b) to add a DIAC

    any interest?
  18. Replies
    249
    Views
    62,135

    take a look at the link posted by orkki on the...

    take a look at the link posted by orkki on the previous page
    Using Hardware Interrupts to Control A.C. Power with Arduino

    there needs to be a 12 volt transformer in there
  19. Replies
    249
    Views
    62,135

    lower mains voltage isn't a problem as such just...

    lower mains voltage isn't a problem as such
    just that you will need higher current for the same power
    so just check the current rating of the triac
    BT139 is rated 2 amps = 200 watts at 110 volts
    ...
  20. Replies
    249
    Views
    62,135

    hello Khalid i'm 220 volts also bt139 is rated...

    hello Khalid
    i'm 220 volts also
    bt139 is rated 800 volts
    should be enough??

    adding the parts for a stand-alone shouldn't be too hard

    I look forward to seeing your circuit!
  21. Replies
    249
    Views
    62,135

    PS I'm looking at the LCD boards next I think...

    PS
    I'm looking at the LCD boards next
    I think there is a mistake in the boards on github
    the A and K pins are flipped
    be very careful out there!
  22. Replies
    249
    Views
    62,135

    I got the circuit into EAGLE and laid out the PCB...

    I got the circuit into EAGLE and laid out the PCB
    it's single sided
    there is a "hole" in the Arduino box as we don't actually want an Arduino on the shield!
    I did place it to align the headers,...
  23. Replies
    249
    Views
    62,135

    thanks orkki that fills in a few gaps very...

    thanks orkki
    that fills in a few gaps very nicely

    timmy
    I still don't see where you get the second triac - which one is it in the circuit?

    cheers
    Mike
  24. Replies
    249
    Views
    62,135

    I have the code open in one hand and schematic in...

    I have the code open in one hand and schematic in the other
    helps to know what the code is trying to do with the hardware and vice versa!

    I think we can swap hall effect and IR quite easily as...
  25. Replies
    249
    Views
    62,135

    I got the schematic from the githup zip files,...

    I got the schematic from the githup zip files, same one as you posted the picture for
    still working on the triacs - not sure why there's two!
    one ought to be enough

    I am expecting to use an IR...
  26. Replies
    249
    Views
    62,135

    I just found the same circuit! just converting...

    I just found the same circuit!
    just converting it to EAGLE so we can do something useful with it
  27. Replies
    249
    Views
    62,135

    which circuit diagram are you going with?

    which circuit diagram are you going with?
  28. Replies
    249
    Views
    62,135

    Hello Tim not sure how much I can contribute,...

    Hello Tim
    not sure how much I can contribute, but happy to ride along
    I have quite a bit of 'duino experience, but not mush with the PID algorithm
    I get the theory, but have yet to build a working...
  29. Replies
    249
    Views
    62,135

    thanks it was the schematic I was more...

    thanks
    it was the schematic I was more interested in :)
  30. Replies
    249
    Views
    62,135

    ah the only circuit I can find is Arduino shield...

    ah
    the only circuit I can find is Arduino shield pdf in Old design
    is that the latest circuit?

    thanks
    Mike

    PS good work by the way!
Results 1 to 30 of 334
Page 1 of 12 1 2 3 4