I wasn't pitching it as a solid commercial idea. Just that you can get (perhaps fiddly) three states out into the real world with something cheap that already e

I wasn't pitching it as a solid commercial idea. Just that you can get (perhaps fiddly) three states out into the real world with something cheap that already exists. Like: https://idle-spark.blogspot.com/2015/04/low-cost-n-ary-dacs-using-digital-io.html https://idle-spark.blogspot.com/2015/04/low-cost-n-ary-dacs-...