I don't think that I said that.
I gave you some thinking material to think about.
But I did miss saying "transistor/resistor circuit", the circuit disappeared between the brain and the fingers.
Chad


On 5/7/15 12:12 PM, claudiu [email protected] wrote:
This is the sensor hcsr04 datasheet:
http://www.micropik.com/PDF/HCSR04.pdf
vol = 5V;
cur = 15mA;
As Chad said if I will attach a resistor between the the sensor echo and BBB will perform the level shift accordingly.Thus, as I previously mention I have attached a 1kohm resistor between the sensor pin echo and BBB so I could convert the voltage to the BBB expected 3.3V, as far as my calculations showed with a 1KOHM resistor. But will be the sensor satisfied if I have plug it in the VDD_5V from the BBB?



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