Rev A is OK

A project log for Base Convert

Simple desk/handheld calculator to convert between hexadecimal, decimal, and binary.

leumasyerrpleumasyerrp 09/08/2018 at 13:330 Comments

After a comment by @K.C. Lee on the last project log I looked into digital/prebiased transistors and was able to find a PNP transistor (PDTA123ET,215 from Nexperia) that is a drop in replacement for the original PNP transistor. I no longer need external pullup resistors on the PNP transistors!  Thanks for your comment.

Now that I have built enough of them for my desk at home and work I will post the rest for sale on Tindie. As always check out the GitHub repository for updated design files if you wish to build your own.