Electronics4you
Member
Hi All,
I need some help with a strange electronic components. In the PING)))™ Ultrasonic Sensor datasheet I found an Echo Hold-off value (time from fall of the trigger pulse to the echo is received) of 750µs, but on their website and several others the value is 350µs. What's the right one?
The delay before next measurement is stated to 200 µs, but this time is for the SRF05 50ms. A grand different but can it be true?
Help with some theory:
I trig the sensor with a >2µs impulse. What happens next? Does it wait for 750µs(or 350µs) until it can receive the first pulse if target is only 2cm away?
It sends out 40kHz impulses for 200µs and then it receive an echo at sometime, and sometimes in the mittle of the transmitting.
Datasheet PING))): https://www.electro-tech-online.com/custompdfs/2006/05/28015-PING-v12.pdf
Datasheet SRF05: https://www.robot-electronics.co.uk/htm/srf05tech.htm
I need some help with a strange electronic components. In the PING)))™ Ultrasonic Sensor datasheet I found an Echo Hold-off value (time from fall of the trigger pulse to the echo is received) of 750µs, but on their website and several others the value is 350µs. What's the right one?
The delay before next measurement is stated to 200 µs, but this time is for the SRF05 50ms. A grand different but can it be true?
Help with some theory:
I trig the sensor with a >2µs impulse. What happens next? Does it wait for 750µs(or 350µs) until it can receive the first pulse if target is only 2cm away?
It sends out 40kHz impulses for 200µs and then it receive an echo at sometime, and sometimes in the mittle of the transmitting.
Datasheet PING))): https://www.electro-tech-online.com/custompdfs/2006/05/28015-PING-v12.pdf
Datasheet SRF05: https://www.robot-electronics.co.uk/htm/srf05tech.htm