4116 Ram Tester Kit for the Arduino Uno. Great for testing memory chips from arcade games, old PCs, and other vintage devices. Requires familiarity with electronics assembly and soldering skills. Arduino Uno is NOT included in this sale. Uno’s can be found on ebay and amazon generally for under $20. Assembly Instructions. https://bsgelectronics.com/4116-memory-tester-video-and-assembly-instructions See my other listings for a 2114 UNO based tester and discounted price for both PCBs. Works with any 4116 compatible chip TMS4116MCM4116MK4116uPD416AM9016MB8116