2114 memory tester shield kit for Arduino Uno.    Test 2114 ram that is used in vintage arcade games, pinball, and other older devices.   Arduino Uno not included.   Requires soldering and a PC for configuring the Arduino.

Source code download 

https://github.com/cpyne/2114MemTest

Assembly Instructions

https://bsgelectronics.com/2114-memory-tester-build-instructions