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Viewing 6 posts - 1 through 6 (of 6 total)
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  • in reply to: MK2 Coach Conversion #1304
    Edward
    Participant

    Hi Richard,

    Loving the updates, this is looking fantastic. The frosted windows are brilliant!

    Edward

    in reply to: Blue Hymek – Traction #1273
    Edward
    Participant

    Web-Server Controls

    This is an image of the controls you see, when you connect to the IP address of the ESP32 in the Hymek on a smart phone. My brother has recently done a software update, meaning you can now have multiple devices connected simultaneously, allowing multiple people to control the Hymek at once. Or you could have one person controlling, and another person monitoring the power gauge!

    I was reading the other day, there are only four real Hymeks left in the UK. Two of which are on the West Somerset Railway, which is less than a five minute walk from my house!

    Edward

    in reply to: MK2 Coach Conversion #1272
    Edward
    Participant

    Hi Richard,

    A lot of care and attention has gone into this conversion. If there are any updates on your progress I’d love to see them.

    Edward

    in reply to: Open Wagon conversion #1271
    Edward
    Participant

    Hi Dave,

    Sorry to resurrect an old thread, but that weathering looks great! Like you I wouldn’t in most cases want to modify the appearance of an original wagon, but that is done very sympathetically. That said, I do like Richard’s Big Big Rainbow Express!

    Edward

    in reply to: Blue Hymek – Traction #1270
    Edward
    Participant

    Hi Richard,

    Yes – I realised the plastic on one of the wheels where the axle passes through had worn, meaning the wheel wasn’t spinning. The glue is a temporary fix, and I think I’ll get those traction wheels as the next update.

    Thanks for the heads up on buffers – one of my buffers has a small chip out of it, so I’ll get that sorted at some point.

    Edward

    in reply to: Blue Hymek – Traction #1268
    Edward
    Participant

    Hi Richard,

    You are exactly right – weight was the main issue. I am using a pair of slim USB battery banks. They are each the length of two D cells, however about half the thickness of a D cell. I’ve therefore added two short lengths of thin pipe full of ball-bearings and covered in tape, that sit on top of one of the USB battery banks above the motor bogie. There’s still just enough space to get the roof on. I have also glued the driving axel, so that now both wheels are driven rather than just the one. Previously the axel would spin along with only one of the wheels.

    Those traction wheels look good. They might have to be the next upgrade.

    This weekend I did a full strip down of the motor too, which now runs much smoother. So the Hymek is now performing very well!

    This is the hardware configuration I am using…

    https://learn.sparkfun.com/tutorials/tb6612fng-hookup-guide

    It is a very neat modification, and you can get really responsive fine control from the web-server.

    The only issue I am now having, is that at prolonged high power, the ESP32 will power cycle itself. I currently have no idea why – for some reason when the motor is driven at speed for a long time the motor driver is making the ESP32 unhappy.  The simplest short term solution is to not run it near full power for a long time! To be honest this isn’t an issue – that speed is far too fast to be realistic for the radius of the curves anyway.

    Thanks very much for your time.

    Edward

Viewing 6 posts - 1 through 6 (of 6 total)