YAPP production line - view from the factory floor

AngusMcDoon

AngusMcDoon

Well-Known Member
Joined
20 Oct 2004
Messages
9,045
Location
Up some Hebridean loch
Visit site
Or the living room floor to be more precise...

sdc11703h.jpg


The first batch of these Seatalk mini-repeaters is being soak tested in the QA department and will soon be transferred to the packaging and despatch building (my old Dad down the road who looks like a more ancient version of Searush). The user manual will be authored and printed as the displays are going into their boxes using the JIT business strategy.

It was a bit of a faff getting this far. The first PCB design was slightly wrong, as first PCB's always are. Then RS said I couldn't have any displays for an indeterminate time so I had to find another supplier, get a sample to test, and then get the required amount. To cap it all, I ordered 10 of the wrong processor type, so had to get 10 more. (Anybody want 10 18F24K22's?)

All 10 fired up first time with no rework required despite my shaky soldering, which is a vastly better production yield than many of the places I have worked.

The next delivery of 10 PCB's is sitting in the stores department (cardboard box in the hall), so if there are any more takers, the assembly line is ready to be fired up again for batch 2.
 
FullCircle said:
Marvellous stuff. Leaves me in awe.
Keep going!
Click to expand...

The finished product is better sitting in front of me...

Next to make the frame to go round it, although anyone know where I can get a clear frame cause the electronics look sooooo neat and professional...

RTFM! it tells me what I need to know 1/2 a page of good solid information... What more can I say, you should turn professional...
 
Last edited:
Thanks Angus.
Pm sent

I was wondering about mounting it in a small Maplin type project box, cut a window in the front and mastic from the back a perspex window.#

Testing on the boat tomorrow....
 
There's still one from batch one available as someone who requested one never sent me an address, so you can have that one. PM me where you'd like it sent.

I don't specify a price as I'm not doing this as a business, it's just a bit of fun, but it would be nice to recover what I spent. I don't expect anyone to pay unless they've tried the device and are happy that it does what they want and works. If not, just post it back.

This is what they cost...

16x4 LCD 599
3 way screw terminal 32
2x8 way header connector 43
18F25K22 184
Discretes+solder 5
PCB 94
Regulator 24
Mosfet 10
10k pot 26
RS delivery 50
BOM Total 1067

Bubble wrap 2
Antistatic bag 3
Box 22
Postage 260
P&P Total 287

Total 1354

Any contribution above that will go into my new oscilloscope fund for future YAPPfoolery.
 
Last edited:
My idea of not specifying a price as I'm not a commercial outfit and don't want to use the forum to make a profit is not working out as I expected. People are offering far more than I'm happy to accept! So here are my new guidelines - minimum price is the cost, i.e. £13.54, maximum is a tenner more than than, £23.54. Any amount between that is fine by me, particularly so if it's a super-prime or smooth number, or some other mathematically pleasing value.
 
AngusMcDoon said:
... ... ... Any amount between that is fine by me, particularly so if it's a super-prime or smooth number, or some other mathematically pleasing value.
Click to expand...
Perhaps pi cubed divided by the square root of e would do? = £18.81 rounded up !

Thanks to a hitherto unknown (to me) feature of Google ... ... ...
 
Last edited:
AngusMcDoon said:
Any amount between that is fine by me, particularly so if it's a super-prime or smooth number, or some other mathematically pleasing value.
Click to expand...

In that case I suggest £20:

20 is the smallest primitive abundant number.
20 can be written as the sum of three Fibonacci numbers uniquely, i.e. 20 = 13 + 5 + 2.
The product of the number of divisors and the number of proper divisors of 20 is exactly 20.
20 is the number of quarter or half turns required to optimally solve a Rubik's Cube in the worst case.
20 is the only number with more than one digit that can be written from base 2 to base 20 using only the digits 0 to 9 ...
Click to expand...

Source Wikipedia: http://en.wikipedia.org/wiki/20_(number)

In addition, the change should be enough to buy you a beer.
 
Last edited:
Yours is in the post.

They have space on the PCB for an ICSP header. Generally I don't put the header on, but yours has one. Good idea for Andrew. I could put a header on one for him as well, but post to Oz would cost a bit more.

I could put a 18F26K22 on instead as well for him; usually it's an 18F25K22. Only memory space is different.
 
I've sent a pm requesting one, let me know a PayPal address, it's just the thing for our remote nav area, is the data selectable? We don't have Seatalk wind or depth, but perfect for autopilot heading, COG, speed and TTG.
 
Last edited:
PM sent, I am installing an NMEA2000 system. As far as I can discover Seatalk is NMEA 2000 with different wiring and the two systems can communicate via a converter cable. I have a short spare NMEA2000 cable and propose to cut it and use it as a drop cable from the NMEA backbone to the YAPP and see if the latter will display the NMEA2000 data.
 
You must log in or register to reply here.

Share this page

Top