SRF005 Ultrasonic Rangefinder

[MurrayJ]

Am I going crazy or is the pinout diagram in the pdf for the ultrasonic rangefinder backwards? I mean the echo out and the trigger in pins for mode 1.

 

[Dippy]

One of us is going crazy

Draw what you mean.

Rev-Ed and Devantech Data sheets are the same diagramatically.
And Rev-Eds look like images lifted directly.

 

[MurrayJ]

Heres the photo I am following, but to get it to work, I have to hook up the echo output to an input pin and the trigger Input pin to an output to get it to work.

 

[hippy]

It's a terminology issue more than anything, the descriptions are from the module's perspective; "Echo Output" is an output from the module so goes to a PICAXE input, "Trigger Input" is an input to the module so comes from a PICAXE output.

On the PICAXE side it would be sensible to label the two connections as "Echo Input" and "Trigger Output", then it becomes clear that an output from one is an input to the other.

 

[BeanieBots]

Heres the photo I am following, but to get it to work, I have to hook up the echo output to an input pin and the trigger Input pin to an output to get it to work.

That's absolutely correct.
Consider it from the perspective of when you have the module in your hand.
"ECHO OUTPUT" is the OUTPUT from the module. Hence you connect it to the PICAXE INPUT. It describes the function of the pin on the device. It is NOT an instruction of where to connect it.

This is a standard way of labelling any equipment. Have a look at the back of your telly. Most (if not all) of the sockets will be labelled something like "Video In" or "Audio In". You connect them to the "Video/Audio" OUT on your video recorder.

The label refers to the device on which it is written.

 

[MurrayJ]

Thanks all, not going crazy, just a little slow today it seems.