Recent content by Buzby

  1. Buzby

    Virtual Shift Register

    08M2 is cheap and powerful, but severely limited for IO, and I think your going to need plenty of that. I'd go for 14M2 which has more IO, or 20X2 which definately gives the most 'bangs per buck'. There is no difference in downloading to any of the PICAXE chips, just press the 'Program' button...
  2. Buzby

    Virtual Shift Register

    i.e the 14th output. It's just where you start counting from, 0 or 1 !
  3. Buzby

    Virtual Shift Register

    Wow !. CD4000's, HC74's, acres of veroboard, dozens of chips, hundreds of interconnects. That brings back memories of the kind of things I built for fun back in the day. Then I discovered microcontrollers. First it was 8060, now PICAXE. Now the 'what it does' is not limited by 'how it's...
  4. Buzby

    Virtual Shift Register

    You could replicate these functions with some switches and a PICAXE, but seeing as you're using a PICAXE I would go for a more intuitive approach. An analogue pot to set the length, and a 2 digit digital display to show the length. Once the length is set, pressing a button would start the...
  5. Buzby

    PE6 Operating Manual & SERTXD hiccup

    It was a bit of a joke really. Most Operating Systems (abbreviated to OS) like Windows, Unix, etc., have 'high priority' and 'low priority' processes. High priority stuff is things like responding to mouse-clicks or keyboard entries, while low priority stuff is things that can afford to wait a...
  6. Buzby

    PE6 Operating Manual & SERTXD hiccup

    Not quite. The 'do : loop until' locks the chip up until ClkPin goes high. This means we can't do any other work while the pin is low. When using a one-shot to determine the rising edge, the PICAXE can execute the 'clocked data input' code once, then carry on cycling round doing other stuff...
  7. Buzby

    Virtual Shift Register

    Hi hippy, I did think of using wrap-around, but seeing as Chris is a beginner I chose to make it obvious how the code worked. I'm sure that bit-twiddling will get a shorter, smarter solution, but it would need a lot more explaining, and be more difficult to adapt. There's always more than one...
  8. Buzby

    PE6 Operating Manual & SERTXD hiccup

    When I tried your short prog it responded as you described, but when I run the code I posted in the shift register thread, once I get below 31, the opposite happens. The highlight is running like mad, and everything else is unresponsive !. I've got a back-to-front OS !.
  9. Buzby

    PE6 Operating Manual & SERTXD hiccup

    My gripe about PE6 is that when simulating, if I reduce the simulation delay to less than about 100 the app goes totally unresponsive. The code window runs the highlight quickly, but nothing else updates, and none of the stop or break buttons work. I usually end up killing it with task...
  10. Buzby

    Virtual Shift Register

    Hi Chris, This is my take on your problem. By using 1 byte to hold just 1 bit, it makes adjusting the length of the buffer easier. This will give a maximum buffer of about 100, or more if you give up some variables. I'd stick with starting at 32, which gives a max length of 96. The one-shot...
  11. Buzby

    $28 Mecanum Wheel RC Vehicle

    COOL !. That's a neat idea. Here is a fractionally cheaper 'chassis and motor' version, more suited to building your own. https://www.ebay.com/itm/2019-New-Omni-directional-smart-car-chassis-universal-wheel-cover-four-wheel/283588545808?hash=item420731cd10:g:LTwAAOSw7L1dXldN
  12. Buzby

    Accelerometer help needed for A-Level project!

    Here is a simple program for reading the ADXL345. ( Ignore the preview heading below, the original thread was talking about a different chip. ) You may need to try 0x3A or 0xA6 in the setup. When it works you will get the chipID value back, decimal 229. Once you get this you know the comms is...
  13. Buzby

    Be afraid, very afraid !

    Admittedly BD are not showing us the times Atlas comes a cropper, like Spot did, but there is no doubt that the technology is progressing faster than biological evolution. Combined with the advances in AI, it won't be long before there is a workforce of human-shaped machines capable of doing...
  14. Buzby

    Be afraid, very afraid !

    Now Atlas can do gymnastics !. https://www.bbc.co.uk/news/av/technology-49829386/boston-dynamics-atlas-robot-twists-and-somersaults
  15. Buzby

    forum certificate expired?

    Yeah, i took the risk as well. Now my bank accounts are empty, my gas has been cut off, and I've got fourteen Amazon unicorns being delivered tomorrow.
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