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TTL-Tester

yet another TTL tester for Arduino Mega

Project Homepage: TTL Tester - Project Homepage

This is a Tester for common TTL Chips (74xx). The Hardware is very simple and based on Arduino MEGA.

Nessecary Hardware:

• Arduino MEGA
• Prototype Shield for Mega
• a ZIF socket
• a button
• optionally an LCD display (HD44780 kompatibel)
• optionally an P-FET and some resistors

DRAM Tester vom vom 8Bit-Museum.de

Alternativly to build the hardware yourself, you also can use the DRAM tester Revision 4.1 from 8Bit-Museum.de

https://8bit-museum.de/speichertester-fuer-dram-chips-fuer-arduino-mega-2560-rev-4/

This DRAM Tester has same Hardware and can used as TTL tester without any modification.

Supported TTL Chips

Currently this chips are supported from the Arduino Sketch:

14 Pin: 7400,7402,7408,7410,7414,7421,7430,7432,7474,7486,74125,74126,74164

(7414 <-- 7404,7405) -- selber Typ, werden alle als 7414 angezeigt

(7400 <-- 74132)

16 Pin: 74138,74139,74157,74163,74165,74595

20 Pin: 74541,74573

The TTL Tester Software is table driven. You can simply extend the list of supported devices by yourself.