Close
0%
0%

Verifone Tranz 330 Boondoggle

Documenting and messing with the Verifone Tranz 330 series credit card terminal

laenLaen
Following
Liked Like project

Just one more thing

To make the experience fit your profile, pick a username and tell us what interests you.

Pick an awesome username
hackaday.io/
Your profile's URL: hackaday.io/username. Max 25 alphanumeric characters.
Pick a few interests
Projects that share your interests
People that share your interests

We found and based on your interests.

Choose more interests.

OK, I'm done! Skip
Similar projects worth following
895 views
0 comments
4 followers
View Gallery
Just hacking up and documenting the Verifone Tranz 330 credit card terminal.

This is a fun little device because it's divided into two boards. The "motherboard", which has a Z80 and a bunch of supporting chips and stuff, and the daughterboard, which has pretty much everything that interacts with the user: A piezo, keypad, VFD display, and magstripe reader. The two boards are connected with a 0.1" spaced header strip.

Verifone Tranz 330 card readers were pretty ubiquitous for many years, and now they're pretty easy to get inexpensively. I placed a bunch of $10 bids on eBay, and won almost every one of them.

  • Header block pinout

    Laen • 07/19/2016 at 20:56 • 0 comments

    Transcribing my notes from last time I hacked on one of these, here's the pinout for the daughterboard.

    1. Keypad, Row 1
    2. Keypad, Row 2
    3. Keypad, Row 3
    4. Keypad, Row 4
    5. Keypad, Column 4
    6. Keypad, Column 3
    7. Keypad, Column 2
    8. Keypad, Column 1
    9. ?
    10. ?
    11. ?
    12. Card Reader
    13. VFD Controller, Reset driver chip
    14. VFD Controller, Shift-in
    15. VFD Controller, Shift Clock
    16. +5V IN
    17. Piezo speaker
    18. ?
    19. ?
    20. GND

View project log

Enjoy this project?

Share

Discussions

Similar Projects

VMEbus SCSI/Floppy Disk Controller
Project Owner Contributor

VMEbus SCSI/Floppy Disk Controller (VFDSC)

keithKeith

Testing the SD-Card on the Parallax Propeller!
Project Owner Contributor

Propeller Weekender: SD-Card Experimentation!

yh-workshopYH-workshop

My efforts to restore an original Interak computer
Project Owner Contributor

Interak Computer Restoration

willWill

A quick upgrade of my venerable 20GB iPod from 2005, replacing the spinning hard drive with an SD card reader.
Project Owner Contributor

iPod (4th gen) with 128GB SD Storage

re4matre4mat

Does this project spark your interest?

Become a member to follow this project and never miss any updates

Going up?

About Us Contact Hackaday.io Give Feedback Terms of Use Privacy Policy Hackaday API

© 2025 Hackaday

Yes, delete it Cancel

Report project as inappropriate

You are about to report the project "Verifone Tranz 330 Boondoggle", please tell us the reason.

Send message

Your application has been submitted.

Remove Member

Are you sure you want to remove yourself as a member for this project?

Project owner will be notified upon removal.