Sweet! I wonder how far this can be pushed. The idea of putting miniature leds on thin wires, just to investigate this seems like a lot of work. But if "oversampling" will let me use a regular plastic encased led, then yeah!
ChrisTenone:
Sweet!
Indeed!
But if "oversampling" will let me use a regular plastic encased led, then yeah!
I suspect the dead-time would be a problem. "Regular" LEDs have a huge amount of epoxy (thermal mass) in comparison to the junction.
But, it is an easy experiment to run. (I wonder if a thermally stable / unstable resistor would make a difference.)
[quote author=Coding Badly link=msg=3848283 date=1534916025]
Indeed!
I suspect the dead-time would be a problem. "Regular" LEDs have a huge amount of epoxy (thermal mass) in comparison to the junction.
But, it is an easy experiment to run. (I wonder if a thermally stable / unstable resistor would make a difference.)
[/quote]Sounds like a Dremel™ tool job (cut off the bulk of the plastic, etc.)
ChrisTenone:
Sounds like a Dremel™ tool job (cut off the bulk of the plastic, etc.)
Maybe adding a few extra components would be simpler ?
...R
The beatuy is in its simplicity. Putting a fan(=turbine) behind the LED to blow on, ruins the effect 
Gotta try this in the weekend.
3dprinter:
The beatuy is in its simplicity. Putting a fan(=turbine) behind the LED to blow on, ruins the effectGotta try this in the weekend.
Well, yeah, but how about a thermistor with a wet bulb under the led as the 'candlestick'.
A self heated thermistor like in air velocity meters? Put a constant current through the thermistor. The voltage drop across the thermistor changes when air flows across it versus still air.
groundFungus:
A self heated thermistor like in air velocity meters? Put a constant current through the thermistor. The voltage drop across the thermistor changes when air flows across it versus still air.
How do you get the thermistor to glow?
TomGeorge:
How do you get the thermistor to glow?
More current?
...R
Robin2:
More current?...R