From basic stamp to arduino

[DrDiettrich]

So what could it be except a resistor?

[runaway_pancake]

An equivalent resistor.
Hey, I'm sorry to have brought it up and/or hurt anybody's feelings -- no need to derail the "BS to Arduino" topic.

[PicoSavvy]

So the SparkFun logic level converter just arrived and I didn't expect it to be this small (A good thing)

[jremington]

@runaway_pancake

An equivalent resistor.

Pointless distinction.

[jremington]

@PicoSavvy

the communication between the Basic Stamp and the coprocessor is UART, based on the description in the PDF.

Correct, but UART serial data transfer requires a level shifter for the 5V TX to 3.3V RX connection. It is best, but not absolutely required, to have one for 3.3V TX to 5V RX connection as well.

[runaway_pancake]

@jremington

Pointless distinction.

It's a semiconductor, still - it's semiconducting.

If this thing is good with "30-ish kohms" of pulling-up - maybe it's a go.
Concentrate on that.
Have a Great Day.

[jremington]

Thanks. You have fun too!

[PicoSavvy]

Is that not what the Sparkfun one does or do I need something more fancy like the TXS0102 or TXS0108

[jremington]

The Sparkfun bidirectional logic level shifter is ideal for adapting 3.3V UART serial signal levels to 5V UART serial signal levels.

[DrDiettrich]

@runaway_pancake

It's a semiconductor, still - it's semiconducting.

Semiconductor behavior Is a matter of the doping. What you call "semiconducting" requires at least two zones of different (p/n) doping. Otherwise the semiconductor behaves as a resistor.