Hard to know about the Sharp IR sensors as there have been many, made over quite a number of years. The analog sensors may be more forgiving than the digital ones, but even so, the output accuracy could be one of those knowable unknowns.
BTW, if Charlie Sheen and I find a single off-spec Ping which operates at 4.6 volts, are we "Winning" with Tiger Blood?
Stranger things have happened. For a Radio Shack project I did I tried to use their "universal" power adapter. It has a 4.5V and 6V tap, but no 5V tap. It wouldn't work at 4.5V (actual unloaded voltage about 4.6V -- ergo "under 4.7V"), and 6V is a little high for the Ping. I ended up using their 6V adapter with a diode.
Actually, a Ping has an SX28 chip on board that is likely programmed with a brown out at 4.7V. But this could easily be revised to tolerate a lower voltage in Parallax wanted to provide more voltage range.
Actually, a Ping has an SX28 chip on board that is likely programmed with a brown out at 4.7V. But this could easily be revised to tolerate a lower voltage in Parallax wanted to provide more voltage range.
With 3.3V processors and 3.7V Li-Ion batteries all the rage now, you'd think someone would be working on 3V sensors, huh?
I've seen at least one complaint about voltage translators and such.
Drive voltage against an ultrasonic transducer is usually an important thing. With no other change, given a lower voltage the transducer wouldn't be hitting as hard, and likely would not have the same range. I imagine altering the Ping to work at 3.3V would entail a number of critical engineering changes. Were this not the case I'm sure by now we would have seen a Ping Rev x with a broader voltage latitude.
That's just a guess, of course. After all, all I have is just old tomcat blood.
erco
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Hard to know about the Sharp IR sensors as there have been many, made over quite a number of years. The analog sensors may be more forgiving than the digital ones, but even so, the output accuracy could be one of those knowable unknowns.
-- Gordon
Thanks Big Guy! Good to get the straight scoop from the master.
BTW, if Charlie Sheen and I find a single off-spec Ping which operates at 4.6 volts, are we "Winning" with Tiger Blood?
Stranger things have happened. For a Radio Shack project I did I tried to use their "universal" power adapter. It has a 4.5V and 6V tap, but no 5V tap. It wouldn't work at 4.5V (actual unloaded voltage about 4.6V -- ergo "under 4.7V"), and 6V is a little high for the Ping. I ended up using their 6V adapter with a diode.
Anyway, here's Charlie...
With 3.3V processors and 3.7V Li-Ion batteries all the rage now, you'd think someone would be working on 3V sensors, huh?
I've seen at least one complaint about voltage translators and such.
That's just a guess, of course. After all, all I have is just old tomcat blood.
-- Gordon
But it is possible for short range devices.