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BusDriverMan

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Posts posted by BusDriverMan

  1. A quick and dirty method is to go through the thread page-by-page and "Print to PDF" each one. (Browser menu, Print, select "Print to PDF" from the list of printers, set page scale to 50%, hit Print, choose a filename and location to save.) It's very far from perfect but means you can still refer to it come the day your ISP shuts down due to rising power bills.

     

    However if someone had done the hard work of filtering out the off-topic posts (like this one) and collating a booklet, that'd be worth a couple of quid to me too.

  2. Talking of servos and DIY circuitry - I've completed my servo tester:


    image.png.b8142f0a717866cf70dd11e571723476.png

     

    This will mostly assist when installing a servo, to let me confirm that the servo can move whatever it's connected to correctly (usually, point blades)

     

    Mini-USB sockets are on order - meanwhile power is connected through the chip's programming header!

    • Like 1
  3. I've procrastinated with this servo-testing circuit, which I'll use while mounting the servos that control the points. It's a microcontroller, numeric display, and a knob, plus a connection to plug in a servo. Turn the knob, the servo moves, and the display shows what angle it's positioned at.

     

    IMG_20210203_022922165.jpg.d9c50ed1674df14e1e36d83d929387c3.jpg

     

    The microcontroller is an ATMega328P, same as what's in an Arduino Uno and programmed the same way.

     

    Now the concept is proven, I'll rebuild it on prototyping board to make something a bit more compact and permanent.

    • Craftsmanship/clever 1
  4. Just now, ISW said:

    What's a servo tester? The only 'testing' I do is make sure they operate and more the correct distance! I might be missing something ...

     

    Ian

    It will be a gizmo you plug a servo into, and lets you drive the servo do different angles, so I can check I've mounted the servo correctly under the baseboard (or in whatever setup I've installed a servo). Will have a 7-segment display and a rotary encoder to display and set the angle, and be powered by a USB cable.

    • Like 2
  5. To kind of repeat my earlier replies - I didn't realise it was feasible to make turned brass parts using a dremel (which I own) and a small file (which I have) on a kitchen table (which… I don't have, my flat is too small, but I have a desk).

     

    I got back into this hobby when I discovered DCC didn't need to be prohibitively expensive thanks to Arduino base stations running DCC++. Now I want to be scratchbuilding/kitbashing/modifying unique what-if vehicles too!

    • Thanks 1
  6. Ah, sadly, the bodyshell is somewhere in my parent's house on entirely the opposite side of the world. I'd stayed up all night reading or playing computer games some time in my late teens, and inspiration struck at about 6am. Had it working by lunchtime!

     

    I've got nebulous ideas about a simulation of TOPS, where an embedded computer on the layout holds a list of all the stock available, you construct a train in the system as well as physically on the layout, and move the train from one place to another under an actual TD number, which could then be meaningfully displayed on signalling panels… possibly overkill for a 1200x200mm layout though!

    • Like 1
    • Craftsmanship/clever 1
  7. Bonus points if you can make the roller blinds work.

     

    I managed it once, in 4mm, with the Lima Class 73...stick a small screwdriver into the exhaust port, turn a plasticard cam, move the blinds at both ends simultaneously (a strip of acetate running the length of the roof). Inspired by the guy who did something similar but motorised to a 7mm Class 73 in the 90s and wrote it up in BRM. Think I met him at an exhibition once.

  8. I think my mind has been poisoned by YouTube videos sponsored by sellers of CNC machines… am I right in thinking you're making these chassis (chassises?) using only hand tools? I mean, drilling out the bearing holes with a handheld powerdrill?

     

    As someone who lives in a flat, with an assortment of the cheapest household power tools Homebase has to offer, (and a CNC engraving machine purchased off the back of said sponsored videos but probably not suitable for milling brass with precision,) this is quite inspiring.

    • Like 1
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