Skip to main content

Designing a PCB

Inspired by Piotr Bugaj and his TZXDuino Shield I thought I'd take his PCB design and add the 2.5mm socket and some right angle buttons and get it so it will fit into a PP9 case.
This is a whole new thing for me as I have never designed a PCB in my life or used Diptrace before. Luckily it's quite an intuitive piece of software that's easy to use. After adding a design for a PCB mounted 2.5mm and also the buttons I managed to design a PCB that should work.



Now however it's finding a reasonably priced manufacturer for a couple of prototypes before maybe a production run.

If you're interested in looking at the Diptrace and gerber file you can download them from here.

Comments

  1. what 2.5mm jack are you using?

    ReplyDelete
    Replies
    1. I use the standard 2.5mm mono jack that was used by all computers that had motor control.

      Delete
  2. witch prorgam are you using for pcb?

    ReplyDelete
  3. I'm interested in upgrading my existing pcb to add a remote socket. Do you have the wiring diagram to show where it would be connected?

    ReplyDelete
    Replies
    1. The ground connects to and ground pin and the main pins connect to pin 6 on the Arduino Nano. Make sure you use a 2.5mm socket.

      Delete
  4. hello, where do I find the values ​​of the resistors and capacitors? thank you

    ReplyDelete
    Replies
    1. Are you thinking of building your own PCB version or building one in general?

      If you are thinking of building one in general then you don't need the resistors or capacitors they are already part and parcel of the LM386 module and mini SD card reader.

      There is a design flaw in this PCB in that Class 10 SD cards do not work under USB power, only under 6v or higher DC.

      Delete
  5. I downloaded the zip package in this article but in the zip package, in addition to the gerber, there is a schematic, but the values ​​of the capacitors and resistors are not reported ...

    ReplyDelete
    Replies
    1. This was a prototype design and not really meant for production, more to test if I could do it or not.
      There are several issues with the design, such as Jack placement and button placement, also hole size as well.

      Delete
  6. This is a great inspiring article.I am pretty much with your good work.You put really very helpful information. Keep it up. Keep blogging. Looking to reading your next post. UETPCB

    ReplyDelete

Post a Comment

Popular posts from this blog

TZXDuino Firmware 1.16, 1.17, and an updated TZXDuino Instruction Manual

  TZXDuino 1.16 In TZXDuino 1.15.3 I added a bug that lowered the volume of some Spectrum TZX files and all ZX80/81 TZX, O, and P files so they didn't work for many people. I fixed this for 1.16. You can download TZXDuino 1.16 from here.   TZXDuino 1.17 The MAXDuino team added ORIC TAP playback functionality to their firmware which I have adapted to TZXDuino. I don't have an Oric Atmos to test it on so I have been recording the playback and loading on Oricutron and everything I have tried has worked. Obviously things may be different on a real machine. Team MAXDuino have also added a speed up function for Oric TAP files which I will add to TZXDuino 1.18 but so far I have been unable to get it to work correctly. You can download TZXDuino 1.17 from here.   And finally there is the updated instruction manual which now tells you how to access Turbo mode for the Electron, ZX80, and ZX81. It also says for Oric but that has not been implemented yet. You can download the pdf of v1.2 fo

And Now For Something Completely Amazing.

 When Andrew Beer and I came up with this idea the intention was for people to build their own and many people have but once in a while someone comes up with something so amazing it really needs to be shared. JamHamster came up with the idea of fitting a TZXDuino in a cassette. Originally it was powered by USB and had a 3.5mm Ear socket but it looked amazing. Then he added a battery so that it was self powered. Then he added a head from a CD to cassette adapter. Then he added a switch under that head so that when you press play on the Cassette Recorder it plays the file you've selected. And the TZXCassette was born Because he is a great guy he's also uploaded the instructions on how to build one to Github and you can download the instructions and build your own. Now at the moment there is no REM control it may not work as well with a CPC 464 as it does with with a Spectrum +2 but it is a stunning piece of electrical engineering and a work of art in my opinion.

New CAS/TZXDuino firmware

New firmware . TZXDuino 1.15.3 Adapted the MAXDuino ID19 code and TurboMode for ZX80/81. To access Turbo Mode for ZX80/81 and Electron please switch Turbo Mode On in the menu Also added UEF Chunk 117 which allows for differing baudrates in BBC UEFs. Added a Spectrum Font for OLED 1306 users converted by Brendan Alford. Option added to userconfig.h Added File scrolling by holding up or down buttons. By Brendan Alford. Download from here. CASDuino 1.24 Added a Spectrum Font for OLED 1306 users converted by Brendan Alford. Option added to userconfig.h Added File scrolling by holding up or down buttons. By Brendan Alford. Download from here.