Eric's home / outreach technology projects

• ComputerHistoryProjects -- notably proposed/actual projects for the ​RICM
• SunriseLamp -- fading LED / alarm for Sara
• PiZeroW -- raspberry Pi zero W fun
• ESP8266 -- a simpler Arduino-compatible uC with WiFi and a few GPIOs
• HPCalculatorRevival -- old HP calculators
• FridgeMonitor -- WiFi? fridge/freezer monitor

WoodFurniture

Tube stuff

Reference

• ​http://www.angelfire.com/electronic/funwithtubes/

Projects

• ​http://ohm.bu.edu/~hazen/TubeAmp/ (gallery of projects)
• TubeBiasMonitor -- a box with a small graphical display to aid in tube bias setting
• ThirdTubeAmp (built) -- ideas for a small SET computer amp
  • Vertical6EM7Build (​forum)
• TubePhonoPreamp (built)
• Useful tube reading:
  • ​WTF salty but quite helpful page on tube amp basics (including nice section on building chassis)
  • ​https://robrobinette.com/Drawing_Tube_Load_Lines.htm - lots of great stuff!
• TubeBoomBox (built)
• TubeHeadphoneAmp
• CoolLookingTubes

• NixieClock -- old and new projects

• Z80Laptop

Speakers

• ​FE103En small reflex cabinets (drivers $50 ea)
• Minimus7Upgrade ideas for upgrade of Minimus-7 speakers (which I seem to have 3 pairs of)

Speaker calculations

• ​https://www.ajdesigner.com/phpsubwoofervented/port_length_equation.php#ajscroll
• ​http://www.troelsgravesen.dk/vent_tuning.htm

Sara's School Committee

• BrooklineVote

Flying

• LedWeatherMap

Other

• ​Phone