Lots of little topics this time, woven together by clever commentary. That's CBA Podcast for you. In the spotlight this time: a shout-out to the Quality Team behind this podcast, impressions from the recent Eindhoven Maker Faire, HCC Retro and Bonami Homecomputer visits, a look back at the current (finished?) RetroChallenge, how to learn Ruby, a DIY portable voltage-reference, the Open Bench Logic Sniffer USB logic analyser, and fun with my angle grinder.

Relevant links to the above:

• HCC Retro division meetings in Bilthoven, NL (page in Dutch)
• Bonami SpelComputer Museum in Zwolle, NL (page in Dutch)
• RetroChallenge, and my entry for that
• Rubylearning.com: a readable Ruby tutorial
• Ruby-doc.org core API reference
• Open Bench Logic Sniffer USB logic analyser
• Rigol DS6000-DK demo board for testing scopes/analysers
• PulseView GUI for this and other capture-devices (manual)
• Trotec PAGS 10-125 angle grinder (roarrrrrrr!!!)

Small DIY USB dual voltage reference(tm) before and after blobbing it with hot glue:

...and corresponding extremely complex schematic:

Open Bench Logic Sniffer threshold-voltages for all buffered inputs (0..16):