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TZXDuino v1.0

TZXDuino has moved out of Beta and is in it's first release version.
Little has changed from v0.8beta3 except extra motor control for Amstrad CPC .CDT files.

TZXDuino v1.0

The files can also be found on GitHub


  1. I am very excited that you got the spectrum tzx files to work. Today I tried to build your project using and arduino mini, somehow all I get is a 1 line of solid blocks on the display. Am I doing something wrong (I checked all connections twice)?

  2. I see now, I had to change the lcd settings to "LiquidCrystal_I2C lcd(0x27,16,2)" for a 2 line display. Now I get a correct display, just tells me no sd card at this time, so have to fix that but making progress :-)

  3. Excellent. I was about to say it sounds like the lcd settings, usually it's the address.

    There may need to be some pin changes for the buttons with the Mini. I know I have tried the Pro Micro with a few changes but I'm not sure about the Mini though.

  4. I didn't hook up the buttons yet, first wanted to get it to run, so working on the sd card now first. I'm limited in time so I will have to see when I can fiddle with it again.

  5. I'm going to guess at the following

    10 SDCS
    11 MOSI
    12 MISO
    13 SCLK

    The Pins for the buttons might be the same IF you have the LCD attached to pins 2 and 3

  6. I got my Arduitape recently and the question is that I don't see any tutorial or FAQ about the correct use of the mounted and cased unit. Are you going to publish something like that for beginners , and giving more emphasys in the buttons' functions, SD card types (if they need a special format before using them), plug-ins, USB connection, firmware update, how to load files in any specific computer (ZX Spectrum, Amstrad, MSX, etc.)... everything?

    1. Yes. I'm working on an instruction manual and tutorials etc.

      Sd cards use FAT file format. As for classes I would recommend Class 4 upwards if you are using an MSX and want to load at the 3600 baud rate but with a word of caution. Not all Class 4s are created equally and some games (Elite and Aliens for example) will end with a checksum error but only at 3600.

      In the meantime if you have any questions please do not hesitate to ask.


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Introducing the TZXDuino

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I'm not usually one for silliness but Andrew Beer has been working hard in the background trying to programme the Arduino to play ZX Spectrum .TZX files without the need to convert to a .WAV. Today he has managed to do that with some .TZX files but also with .TAP files as well. The code is still very much in the early stages so the compatibility with.TZX files is still relatively low but in theory all .TAP files should work. I only have 5,246 to test.
What's even better is that the code will work on both the Arduitape and the CASDuino hardware by just uploading the programme to the Nano.

Simply download this file, unzip and load in the Arduino IDE.

TZXDuino 1.7

TZXDuino 1.7
This fixes issues with pause lengths that we never noticed before. It should fix games like Top Gun and Street Hawk for the Spectrum and make CDT files behave as they should for the Amstrad CPC.Changes.
*Maximum pause length of 8.3 seconds due to the TimerOne library has been worked around.
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*Temporary fix for pause after motor control removed.!aEt1VJKZ!ZFw-fP3bkNTtiPlbG_IllmR94Xni3KvIGUn6Jggfof8

How to change Firmware on the Arduitape/TZXDuino/CASDuino.