How to socket BX24?

Started by harrybstoner August 17, 2005
Had a bad day here. I soldered all the components to my PCB today and
tried it tonite. But the BX24 did not boot up properly. Most likely
due to the fact that I used a machined-pin socket, and the BX24 pins
don't fit properly in the socket (literally a square peg in the round
hole problem).

I haven't encountered a problem like this, as all other chips I have
socketed previously has the tapered pins and fit great.

So my first question is, how do you socket your BX24? Will a different
type work? Secondly, I'm not sure how to proceed. I really don't want
to unsolder the existing socket (I can see myself destroying the PCB
traces). Can I place a socket in the socket? In other words, is there
any way to adapt the BX24 to the existing socket somehow?

I will have to make a long drive to the electronics store tomorrow to
try and rectify this problem.

And to top it all off I realized I had an error in my schematic too.
But at least I can fix that.

Thanks.

Harry


Harry
Just put a socket with flat wiper style pins into your
round-pin socket. You may even solder the 4 corner pins if you want the
sockets to stay mated. Generally the real cheap sockets work fine.
neil

harrybstoner wrote:

> Had a bad day here. I soldered all the components to my PCB today and
> tried it tonite. But the BX24 did not boot up properly. Most likely
> due to the fact that I used a machined-pin socket, and the BX24 pins
> don't fit properly in the socket (literally a square peg in the round
> hole problem).
>
> I haven't encountered a problem like this, as all other chips I have
> socketed previously has the tapered pins and fit great.
>
> So my first question is, how do you socket your BX24? Will a different
> type work? Secondly, I'm not sure how to proceed. I really don't want
> to unsolder the existing socket (I can see myself destroying the PCB
> traces). Can I place a socket in the socket? In other words, is there
> any way to adapt the BX24 to the existing socket somehow?
>
> I will have to make a long drive to the electronics store tomorrow to
> try and rectify this problem.
>
> And to top it all off I realized I had an error in my schematic too.
> But at least I can fix that.
>
> Thanks.
>
> Harry >
>
> >. >
>




harrybstoner wrote:

> Had a bad day here. I soldered all the components to my PCB today and
> tried it tonite. But the BX24 did not boot up properly. Most likely
> due to the fact that I used a machined-pin socket, and the BX24 pins
> don't fit properly in the socket (literally a square peg in the round
> hole problem).
>
> I haven't encountered a problem like this, as all other chips I have
> socketed previously has the tapered pins and fit great.
>
Neither have I and it should work. Before you run off in potentially the
wrong direction I would suggest putting the BX-24 back onto your
breadboard and running some solid hookup wires from the socket to the
breadboard. I think you could get away with just 5 (pins 1,2,3,21,23)
and then try out your PCB. You may have an entirely different problem to
what you think it is.

Mike



Thanks Neil. That's the direction I was thinking.

Harry

--- In basicx@basi..., jel <njepsen@i...> wrote:
> Harry
> Just put a socket with flat wiper style pins into your
> round-pin socket. You may even solder the 4 corner pins if you want the
> sockets to stay mated. Generally the real cheap sockets work fine.
> neil
>
> harrybstoner wrote:
>
> > Had a bad day here. I soldered all the components to my PCB today and
> > tried it tonite. But the BX24 did not boot up properly. Most likely
> > due to the fact that I used a machined-pin socket, and the BX24 pins
> > don't fit properly in the socket (literally a square peg in the round
> > hole problem).
> >
> > I haven't encountered a problem like this, as all other chips I have
> > socketed previously has the tapered pins and fit great.
> >
> > So my first question is, how do you socket your BX24? Will a different
> > type work? Secondly, I'm not sure how to proceed. I really don't want
> > to unsolder the existing socket (I can see myself destroying the PCB
> > traces). Can I place a socket in the socket? In other words, is there
> > any way to adapt the BX24 to the existing socket somehow?
> >
> > I will have to make a long drive to the electronics store tomorrow to
> > try and rectify this problem.
> >
> > And to top it all off I realized I had an error in my schematic too.
> > But at least I can fix that.
> >
> > Thanks.
> >
> > Harry
> >
> >
> >
> >

> > >.
> >
> >
> >

> >



harrybstoner wrote:

> Good point Mike. I was thinking this morning that there existed a
> possibility of some other problem. I took the BX24 off the PCB and
> back onto the breadboard and it works fine so I know the BX24 itself
> is good.
>
> I measured good voltages on the power pins of the BX24 when on the PCB
> but I just presumed that the connections must be flaky. On power up,
> the red on-board LED just flashed once quickly. My code lights red and
> green LEDs for 3 seconds so I know my code didn't run. I could also
> infer from other pins that my code wasn't running.
>
Given that the Bx-24 is okay you may have a short or something that is
causing a reset or just a badly connected socket as you suggested
earlier. Again try adding jumper wires from the socket on your PCB to
your breadboard. That might help.

Mike