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schizobovine

Member Since: November 22, 2013

Country: United States

  • From experience, a crockpot/slow cooker plus oil bath is near perfect as a heat source for Soxhlet extraction with ethanol. The cheapo thermostat in the cooker is good enough to keep temperature regulation without needing to bother with a whole PID controller setup–I don’t believe crock pots get hot enough to boil water (mine doesn’t anyway) but it easily hits ethanol’s BP.

    An aluminum foil tent around the boiling flask helps the system reach equilibrium temp faster, but isn’t strictly necessary.

    I typically use vegetable oil in the cooker as the heat transfer medium because it’s cheap and renewable. Downside is that my apartment smells like french fries for days afterward.

  • To answer my own question, in case it helps others, the main differences appear to be:

    • The FT231X is a newer chip in a slightly smaller package (SSOP-20 vs. the FT232RL’s SSOP-28).
    • It’s only $2.48 for a single FT231X on DigiKey (768-1129-1-ND) vs $4.50 for the FT232RL (768-1156-5-ND)
    • The FT231X will detect USB chargers (I’m guessing via the shorted data pins); wasn’t clear if this feature enabled it to pull more than 500mA off the charger.

    Hope this helps some people!

    References:

    Can I replace the FT232R with FT231X/FT230X?

    Alternate FT231X breakout board schematics

    Some more breakouts for the FT231X

  • What’re the difference between FT232RL and the FT231X breakouts? Obviously mini vs. micro USB connectors are one.

    I ask because the description for the FT231X says it’s a drop-in replacement for the FTDI basic cable. However, the Arduinos with USB based on the ATMega328PU (i.e., not the ATMega32U4 with built-in USB comms), like the RedBoard or Adafruit’s USB Boarduino, all seem to use the FT232RL instead.

  • What’re the difference between FT232RL and the FT231X breakouts? Obviously mini vs. micro USB connectors are one.

    I ask because the description for the FT231X says it’s a drop-in replacement for the FTDI basic cable. However, the Arduinos with USB based on the ATMega328PU (i.e., not the ATMega32U4 with built-in USB comms), like the RedBoard or Adafruit’s USB Boarduino, all seem to use the FT232RL instead.