Basic stamps 2 and srf05 ultrasonic

RcManiaCyprus

Hi,

I have a boe bot(basic stamps 2)I am trying to get it working with the hy-srf05 ultrasonic sensor.The sensor has 2 modes.One uses 2 different pins for trigger and echo and the other mode uses one pin for both echo and trigger.I tried getting the second mode(one pin both echo and trigger) working with the code provided by parallax for their ping))) ultrasonic sensor.Doesn't do anything.If any of you guys has code for either of the modes that would be great.And if anyone has modified the roaming with ping code to work with this sensor that would be great too!Any help would be much appreciatedThanks..

erco

Discussion, code, and how to use 1 pin at http://forums.parallax.com/showthread.php/135899-Two-Buck-Ultrasonic-Sensor/page5?highlight=ultrasonic+sensor

RcManiaCyprus

Thanks for the links.I tried the code and it doesn't work.I tested the sensor a long time ago on my arduino and it worked very well.I might have burned it trying to get it to work with a single pin.I will try using the arduino again and see if i can get it to work.5 of the srf04's are 8 dollars on ebay.One question.Does the srf04 support the one pin mode?I want to use this sensor on my boe bot with a servo and navigate like the ping))).Thanks for helping me out.Newbie here.

erco

Yes, 5 for $8: http://www.ebay.com/itm/5PCS-Ultrasonic-Sensor-Module-HC-SR04-Distance-Measuring-Sensor-for-arduino-SR04-/170897438205?pt=LH_DefaultDomain_0&hash=item27ca47f5fd#ht_3297wt_917

None of my cheap Ebay HC-SR04/05 modules support one pin mode. Note that these are not the same as Devantech's SRF04/05:
http://www.robot-electronics.co.uk/acatalog/Ultrasonic_Rangers.html

Get two-pin mode working first, then try the one-pin approach afterwards.

RcManiaCyprus

Thanks for helping out.I have another question.Can i use this sensor mounted on a servo like the ping))) and use it on my boe bot for roaming?What do i have to change on the original ping))) code?

erco

Sure can. Ping code ought to be real close, but for two pin mode on these other modules, you'll need to change the Pulseout/pulsin numbers for your configuration.

After you get your sensor mounted on a servo, be sure to do Andy's very cool PING-dar experiment, a required rite of passage for every budding roboticist: http://forums.parallax.com/showthread.php/86110-Ping)))Dar-a-Radar-Style-Display?highlight=ping+dar+radar+display

ajward found 10 sensors for $14.22... ridiculously cheap: http://www.ebay.com/itm/10-x-Ultrasonic-Module-HC-SR04-Distance-Measuring-Transducer-Sensor-for-Arduino-/130705106799#ht_2575wt_679