MK-312BT for sale (estim device)

Discussion in 'For sale/wanted' started by dt4y, Jun 9, 2020.

  1. dt4y
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    dt4y Member

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    Hi,
    i recently build a few MK-312BT devices for a friend an for myself. but i do still have two spare devices. So i will offer them.

    I would ask for 350€+shipping for each box.
    Those boxes are located in germany. There are two Boxes available.

    The MK312-BT is a open Source Design electrostimulation box with the ET-312B as reference / example.

    best regards
    dt4y
     

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  2. Juan.
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    Juan. Active member

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    If you dont mind, can i ask how much hours does it take to assemble?

    I saw the project but since it is discrete logic and a very complex design i lost interest, at least i dont remenber it using a micro controller, if i recall rigth the main chip was an Analog Devices amplifier

    I was also curious about the cost in money but since the materials list was big i didnt expect to be cheap, i will understand 100% if you dont want to tell an estimate
     
  3. dt4y
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    dt4y Member

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    hard to tell how long you need for just one box, i soldered 4 boxes at the same time, Part for part.

    All in all i think you have 3 hours work for soldering one box (including organizing all the parts and bending all pins correctly) Also you need some time for researches to find the correct firmware, to patch it and to write it to the Atmega 16.

    For writing the Firmware you need some other Tools lika a usbasp

    The partlist is really long. with customs and taxes you have round about 200€+ only for the Parts. also you have to invest some times for searching to find the parts that are sold out on mouser or parts mouser does not ship due to shipping rstrictions.

    So i invested some additional hours to find an case thats available, battery, powersupply, Switch and some other parts.

    you can calculate another 4-6 hours for researches, parts ordering etc.

    So with that part costs and all the time you have to invest i think 350€ is absolutely fair (my goal isn't to make the big money with that two boxes, its more or less a selling for the self-cost)
     
  4. Tieme
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    Tieme Member

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    Wauw dt4y,

    Those boxes look amazing! It' looks very similar to the real deal!
    Can you send more info /howto's? I would love to build this by myself. i'm a bit tech too. Would nice job for hobby.

    best regards!
     
  5. dt4y
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    dt4y Member

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  6. Juan.
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    Ok, thanks, it was to confirm what i thougth, a big and complex project, it was curiosity from an engenier, i konw really well that even tiny projects take hard work, even from the start, which one of the thousands parts will be used? A resistor meh but even capacitators matters as not every category/family is rigth for all cases
     
  7. Juan.
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    If you havent done any other project my sugestion it is to dont try, it is a complex one and if you never tried you will fail building it, finding a fault is hard and in this kind of projects better do it proper or be prepared to invest several hours until finding the issue

    The pcb for example, you have the map but once you try to order from one manufacture you will find that a simple thing (it is fibber glass with cooper) it is much more advanced that you never could imagine, if you go with the defaults options it may not work which it is really bad as that options are not what they should be

    Trust me that if you want one now just bui it, if you really want to build yourself start with simple projects and kits and when you have some skills then try it
     
  8. Tieme
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    maybe it better to play and not solder myself

    what is your best price for device? and what would shipping to belgium cost?

    is it with the wiffi addon?
     
  9. dt4y
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    dt4y Member

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    All available boxes are sold.
     
  10. Wolfi66
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    Wolfi66 New member

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    Hey, ich finde leider die Bauanleitung nicht.
    Würde mich sehr freuen wenn du sie mir zukommen lassen würdest.
    LG Wolfgang
     
  11. dt4y
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    dt4y Member

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    The instructions are not longer available. the projet founders decided to close the project and take everything offline
     

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