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New Breadboard Question/Feedback

Cluso99Cluso99 Posts: 18,069
edited 2013-01-08 07:20 in Propeller 1
I am working on a prototyping board and am wondering whether to keep the prototyping section free of tracks (as the Propeller Proto Board does) or link some of the tracks together (similar to the solderless modules).

Adjacent to each pin (horizontally) are a number of available pads.
Each available pad is represented by "o" and the IC (prop) pin is represented by "x", horizontal track connections "-" and vertical track connections "|"
The verticals would normally be used for power/ground but are not committed to this.

Unconnected pads example...
o o o o o o o o-x

o o o o o o o o-x

o o o o o o o o-x
Connected pads example...
      | |
o-o-o o o o-o-o-x
      | |
o-o-o o o o-o-o-x
      | |
o-o-o o o o-o-o-x
      | |

For those of you who have built prototypes, which version do you prefer and why?

Comments

  • Oldbitcollector (Jeff)Oldbitcollector (Jeff) Posts: 8,091
    edited 2013-01-05 13:48
    I tend to prefer (and design) connected pads. It makes it easy to make multiple connections and connect cleanly to ICs.

    Jeff
  • Duane C. JohnsonDuane C. Johnson Posts: 955
    edited 2013-01-05 14:09
    I tend to prefer (and design) connected pads. It makes it easy to make multiple connections and connect cleanly to ICs.
    And the connecting links can be cut with an Xacto knife to customize it.

    Duane J
  • SapiehaSapieha Posts: 2,964
    edited 2013-01-05 14:09
    Hi Cluso.

    I mostly use not connected as that give more possibility's


    Cluso99 wrote: »
    I am working on a prototyping board and am wondering whether to keep the prototyping section free of tracks (as the Propeller Proto Board does) or link some of the tracks together (similar to the solderless modules).

    Adjacent to each pin (horizontally) are a number of available pads.
    Each available pad is represented by "o" and the IC (prop) pin is represented by "x", horizontal track connections "-" and vertical track connections "|"
    The verticals would normally be used for power/ground but are not committed to this.

    Unconnected pads example...
    o o o o o o o o-x
    
    o o o o o o o o-x
    
    o o o o o o o o-x
    
    Connected pads example...
          | |
    o-o-o o o o-o-o-x
          | |
    o-o-o o o o-o-o-x
          | |
    o-o-o o o o-o-o-x
          | |
    

    For those of you who have built prototypes, which version do you prefer and why?
  • cavelambcavelamb Posts: 720
    edited 2013-01-05 14:16
    If the tracks are on a surface layer, they can easily be cut when needed.
    But if no tracks, they can be added easily when needed.
    I think I'd prefer no tracks as it give the most flexibility for component placement.

    It's almost impossible to find all the good prototyping stuff that used to be on the market.

    One of the handier tricks was strips of metal with holes matching the .1" centers.
    And, of course, the all the myriad pins that could be poked through those holes.
    These days there is hardly anything available for hand-built prototypes.
  • CircuitsoftCircuitsoft Posts: 1,166
    edited 2013-01-05 14:16
    And the connecting links can be cut with an Xacto knife to customize it.
    SparkFun sells a protoboard where all the pads are interlinked, and it's up to you to use a blade to cut apart the ones you don't want connected.
  • Oldbitcollector (Jeff)Oldbitcollector (Jeff) Posts: 8,091
    edited 2013-01-06 09:03
    SparkFun sells a protoboard where all the pads are interlinked, and it's up to you to use a blade to cut apart the ones you don't want connected.

    That's a neat idea.. tempted to do a small run of these with a Quickstart connector just to try it myself.
  • kwinnkwinn Posts: 8,697
    edited 2013-01-06 10:39
    SparkFun sells a protoboard where all the pads are interlinked, and it's up to you to use a blade to cut apart the ones you don't want connected.

    Thanks for the link. I used similar boards many years ago for prototyping. They were very nice to work with and made for excellent prototypes and "one off" boards. Unfortunately they disappeared from the marketplace after a couple of years. Nice to see something similar again.

    The SparkFun boards are somewhat different from the ones I used in that the pads are connected in both X and Y directions on both sides The ones I used had the pads connected in strips going in the X direction on one side and the Y direction on the other, and were not plated through.

    Cutting all those connections can be tedious so a rotary tool with a cutting wheel would be a much better tool than an exacto knife for building a circuit.
  • Martin_HMartin_H Posts: 4,051
    edited 2013-01-07 02:51
    I like the connected style. Busboard systems makes a number of different styles and I've found that point to point wiring is more goof proof if I can follow my breadboard version of the circuit. Plus when I play my cards right I can hide the rats nest of wires on the underside of the board.

    The fully connected proto board looks like too much of a good thing.
  • max72max72 Posts: 1,155
    edited 2013-01-07 03:26
    i use something like this on a prop platform clone with smaller size:
            | |
    x-o o-o o o o-o o-x
            | |
    x-o o-o o o o-o o-x
            | |
    x-o o-o o o o-o o-x
            | |
    x-o o-o o o o-o o-x
            | |
    x-o o-o o o o-o o-x
            | |
    
    

    This way I have not need to cut traces but it is much easier to connect components including dip.
    As an alternative for my prototypes I use veroboards.

    Massimo
  • SRLMSRLM Posts: 5,045
    edited 2013-01-07 11:29
    I prefer no connections at all: I find it quick and easy to wire point to point.
  • groggorygroggory Posts: 205
    edited 2013-01-07 14:19
    SparkFun sells a protoboard where all the pads are interlinked, and it's up to you to use a blade to cut apart the ones you don't want connected.

    Neat idea. interlinked by like a 12mil path so it's easy to cut. Cool idea
  • Cluso99Cluso99 Posts: 18,069
    edited 2013-01-07 15:27
    I was planning the connections on the underside of the pcb with .010" tracks marked by an overlay .006" (both sides). The pcb will be 2 layers.

    I was going to fill with a ground plane. This would make cutting perhaps a little more difficult to see??

    The sparkfun protoboard seems to have too many connections requiring cutting to be really useful - yes a dremel makes it easier but then thats another requirement for the user.
  • groggorygroggory Posts: 205
    edited 2013-01-07 15:32
    Cluso99 wrote: »
    I was planning the connections on the underside of the pcb with .010" tracks marked by an overlay .006" (both sides). The pcb will be 2 layers.

    I was going to fill with a ground plane. This would make cutting perhaps a little more difficult to see??

    The sparkfun protoboard seems to have too many connections requiring cutting to be really useful - yes a dremel makes it easier but then thats another requirement for the user.

    I generally like ground planes, but for a proto area I don't like them.
  • RobotWorkshopRobotWorkshop Posts: 2,307
    edited 2013-01-08 07:20
    I used to prefer the boards where some of the pads were connected but now they just get in the way. After years of building prototypes my methods have changed and I find it much easier to just used boards with just an array of pads. It is best to use double-sided boards so you can solder on either side of the pad.

    I've been cutting traces on my latest project using a Quickstart protoboard and I've ended up cutting so many that it would have been easier to get plain Protoboard and start with that instead.

    Also, please leave as many extra pads around the edges .100" spacing where people can add connectors. I've found that lacking in many boards and sometimes there is wasted space instead. In some cases I've run out of room for connectors.

    Robert
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