Hopefully, I'll have a first system in June 2017. I hope to build it with the kids of CercleJ, where I teach electronics to teens.

The subject of this log is : let's also design square-inch sized modules that perform boolean logic, like "discrete gates", but instead of just soldering a LS/HC chip, I simply put BS170/BS250. I imagine the following gates :

• (N)AND
• (N)OR
• X(N)OR
• debounce
• (any idea ?)

This would let the kids play with logic circuits they have built themselves, instead of using a "ready made black box". We could play with the counters and all their configurations, for example.

Note that all the circuits provide both positive and negative levels, both for "practical" reasons and for directly driving the 10TFF modules.