With all the testing I have been doing I'm convinced that the hardware and firmware (an Arduino Sketch) are solid and ready for prime time.  So far I have written and successfully run TMD-1 "programs" to do the following:

• 3-State / 2-Symbol busy beaver
• 1s compliment of input area
• 2s compliment of input area
• counting (ascending)
• shifting (left) / multiply by 2
• sorting all 1s in input area to the left

So I'm declaring the TMD-1 hardware officially finished.