For Sale: Electronic kits

Discussion in 'Marketplace' started by Robin Mitchell, Jun 17, 2015.

  1. Robin Mitchell

    Thread Starter Well-Known Member

    Oct 25, 2009
    734
    200
    Hi all,

    Got some new kits made up and ready to go!
    • 555 Astable kit - £1.99
    • 555 Monostable kit - £1.99
    • Simple Function Generator - £2.49
    • PWM Generator - £2.99
    • Logic Probe - £2.49
    • Two Transistor Flasher = £1.49
    Each kit has a downloadable document that details both the circuit function and the steps for construction (a great amount of time has been devoted in trying to get these documents to a good standard).

    You can get there here : http://www.ebay.co.uk/sch/mitchelectronicsonline/m.html?_nkw=&_armrs=1&_ipg=&_from=

    And for those who wants some pics:

    Simple Function Generator

    [​IMG]

    555 Monostable
    [​IMG]



    555 Astable

    [​IMG]



    Logic Probe
    [​IMG]

    PWM Generator
    [​IMG]

    Two transistor flasher
    [​IMG]

    All the best,
    Robin
     
    Last edited: Jul 12, 2015
    Sinus23, absf and #12 like this.
  2. Robin Mitchell

    Thread Starter Well-Known Member

    Oct 25, 2009
    734
    200
    All the items got cheaper :)
     
  3. Tony Pham

    New Member

    Aug 22, 2015
    3
    1
    Good price, but i don't need
     
  4. takao21203

    Distinguished Member

    Apr 28, 2012
    3,577
    463
    Probably you'll be struggling with costs once you scale up, move out from home, pay off equipment, and think about taxation.

    I an seeing such issues, if it wouldnt be for rise of usd equal getting more euros out, I'd have to rise prices 30%

    But I didn't and shipping is still just 4 dollars.

    I may have a request for a PCB just one piece.
    Have to setup new pc at home on the weekend then maybe will do a layout.
     
  5. Robin Mitchell

    Thread Starter Well-Known Member

    Oct 25, 2009
    734
    200
    Sure, just send you PCB request to pcbfab@mitchelectronics.co.uk

    Just to let you know ALOT has changed since you last purchased a PCB. For example, all drilling is CNC and photo-lithography enables much better traces!
     
  6. takao21203

    Distinguished Member

    Apr 28, 2012
    3,577
    463
    yes I saw your new photos. Im under pressure in terms of time. My old vista laptop broke, got a desktop on Friday, just got it working yesterday night.
    Cant run Eagle under Linux...but will find a solution.

    Didnt complete the new prototype besides changing to better lithium battery. And installed MPLABX on ubuntu yesterday.

    I really want a new PCB but Im not there yet. Today I took a day off...
     
    Robin Mitchell likes this.
  7. Robin Mitchell

    Thread Starter Well-Known Member

    Oct 25, 2009
    734
    200
    Sounds like you need a day off. I too have had the past day off. Weather (rain) has leaked through the roof and somehow found it's way into a tub of 7805 regulators. Looks like they will need replacing :(
     
  8. takao21203

    Distinguished Member

    Apr 28, 2012
    3,577
    463
    Ive worked 18 hours a day at time when I was in transition between home and business storage, to keep up with orders. Except small delays of 2 or 3 days max., I didnt have any interruption when moving and reorganizing the inventory.

    But its done now, can do orders in half the time almost, possible to take off one or two days almost every week.
    Doing emails on the go with smartphone, shaving off additional minutes each day.
    I still give good service to all who ask questions.
     
    Robin Mitchell likes this.
  9. Robin Mitchell

    Thread Starter Well-Known Member

    Oct 25, 2009
    734
    200
    Thats how small business operate. Just gotta keep working hard!
     
  10. vluban

    New Member

    Aug 31, 2015
    5
    2
    Solved? I'm running it all the time under Linux...

    If anything, perhaps I can help...
     
  11. AnalogKid

    Distinguished Member

    Aug 1, 2013
    4,546
    1,252
    Mitch - SFG user manual - the description on page 4 is correct. The output names on page 3 are swapped.

    ak
     
    Robin Mitchell likes this.
  12. Robin Mitchell

    Thread Starter Well-Known Member

    Oct 25, 2009
    734
    200
    Im already aware of this problem but I have not had time to adjust it. Thanks anyway for letting me know!
     
  13. takao21203

    Distinguished Member

    Apr 28, 2012
    3,577
    463
    sorry for not getting back to you.
    Background is until just recently I never found time to finalize one of my PCBs for selling.
    I became frustated- soldering 50 LEDs takes a long time. As well the via clearance is too small for some LEDs.

    But now Im adding RGB LEDs so the assembly doesnt take 2 hours.

    I cant start new PCB designs when the previous one isnt finished!
    Now I got the small parts for the dcdc converter for instance.

    OP

    You should try some SMD parts definitively and look what the chinese have on sale.

    Maybe you could try a 3 LED or 5 LED ring oscillator as PCB.

    Do you market the PCBs on ebay at all or how do you sell them? I remember your story with Rapid some time ago.

    I really became frustrated with a PCB I made, assembling myself takes a long time even at $10 hour I couldnt sell it. And as kit its too difficult, there are minor bugs too.

    But I didnt give up, and found a patch, just requires some leads bending, now Im going to try to sell a RGB chaser freely programable, 10 LEDs same like CD4017.

    Another PCB I made 2013 I think I have to mothball it, I couldnt sell for less than $15 just 2x3 digit small LCD with driver ICs while the 2x16 LCDs are spot cheap, there are just no customers.

    It can drive LED displays too but I wasnt yet able to market it.
     
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