Hi All, thanks for your interest.
The initial nine boards have all been accounted for, but there has been enough
interest to justify a second batch.
I'll let it run a few days to gauge interest and see what size batch to order.
If anyone has suggestions for modifications,feel free to contact me.
I could of course do a larger board with more features, but it then rapidly
becomes less universal - comments welcome.
cheers, ian
On Thu, Jan 12, 2012 at 1:09 AM, gonzo . <cadbl...@hotmail.com> wrote:
>
>
> Hi All,
> like many on the list I picked up one of the current batch of cheap
> FE-5608A's.
> Not being clear where I would end up using it, I laid
> out a breakout board to make it easy to play with on the bench, but with the
> expectation that it would remain attached when I got around to mounting the
> Rb
> in a box (or where ever).
>
> In summary, I've used two VRegs:
> - LM1084Adj for 15V (pin compatible with LM317, but rated for 5A) and an
> AMS1117-5 for the 5V.
> - The regs can be fed individually or jumpered to run the 1117 from 15V.
> This works, but both regs run fairly hot.
> - 1PPS and LD are brought out to individual headers.
> - 10MHz has an SMA.
> - RS232 is given its own D9 wired for 2, 3, & 5 (TX, RX, Gnd) for a
> standard cable.
>
> In the process of laying out the board, I discovered another
> "undocumented feature" of this batch of '5680A. For reasons unknown, the D9
> is
> 3.5mm (1/8") higher than shown on the data sheet. Normally this would not
> matter, but I'd positioned the connector on the PCB maintaining the low
> profile. Not a big deal, but irritating all the same.
>
> Having read
> several tales of woe resulting in blown components. I thought I'd offer my
> spare boards in the hope of keeping the smoke where it belongs. I've got 9
> remaining PCBs and the last of the components should arrive in a week or so.
> The cost for a complete kit is aud$10 and $5 for DX postage. I have no
> idea what level of interest (if any) there will be, but I can always order
> more boards if there is a demand.
>
> One thing to note is that this board is designed for the current batch of
> FE-5680A with the following pinout:
> 1. +15V (~1800mA cold: ~800mA hot)
> 2. Gnd
> 3. Rb Lock (lock = low)
> 4. +5V (~85mA)
> 5. Gnd
> 6. 1PPS (high until Rb Lock goes low)
> 7. 10Mhz
> 8. RS323-RX
> 9. RS232-TX
>
> Please contact me off list if you are
> ?interested.
>
> Cheers,
> ian
>
> > _______________________________________________
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