ultrasonic range meter - Electronic Circuits Projects Diagrams Free

bloody-orc · 22nd June 2005, 09:36 AM

Hi there!
I'm planing to build a ultrasonic range meter for my robot.
I searching for easy schematics, that i could use with my pic(axe). Has anyone some good schematic?

aslo i would like to know, how is this programming done?
*pulseout
*reading?
*calculating the value into cm's(how do i do that?)
*sending data to lcd\PC(this is the part i know

)

any good links\tutorials?
all help is accepted.

Roboticinfo · 22nd June 2005, 09:41 AM

http://www.eng.uah.edu/~wells/cpe437..._schematic.htm

bloody-orc · 22nd June 2005, 10:47 AM

do you know if it works also?
all other i have seen have a amp on the Tx part aswell. why is there none. And still when i use tjhis what should my software look like?

has anyone any idea on the schematic that those modules have? they are only 3pin'ers 1 for gnd 1 for v++ and one sends out pulses, that i mesure. is this hard to make? this would be ideal for me

DigiTan · 22nd June 2005, 08:33 PM

I had a schematic like that from a McGraw-Hill book on BASIC Stamps. Their code was in BASIC of course, but it still might be useful. I'll check for thier link or a .gif for you if you're interested.

Roboticinfo · 22nd June 2005, 08:35 PM

The circuit works there is no need to.

bloody-orc · 22nd June 2005, 08:42 PM

ok if it wors, then how should the software look like in the pic(axe)?
and also, why is the Tx connected to 2 output pins? can't i use only one?

Roboticinfo · 22nd June 2005, 08:43 PM

The software is on that page

bloody-orc · 22nd June 2005, 08:49 PM

ok this is written in language i can't understand. could someone make me a summary maybe? like what i must do. i saw a lot of nap'ing there... like what is this for etc. i dont need this lcd thingy also. i just need to get a mesurment in one byte in cm's

**Nigel Goodwin** · 22nd June 2005, 10:30 PM

Quote:

Originally Posted by bloody-orc

why is the Tx connected to 2 output pins? can't i use only one?

It's a bridged output stage, it gives TWICE the drive voltage to the transducer - in this case, 10V p-p rather than 5V p-p - this gives four times the power output!.

You 'could' use just one pin, but only giving quarter the power.

bloody-orc · 23rd June 2005, 08:55 AM

oki-doki

but now the software problem.
What stages must i go through?
wrom where to where is this code sending\recieving the U\S beams? and how is it sending it?

http://www.eng.uah.edu/~wells/cpe437...de_listing.htm

**Nigel Goodwin** · 23rd June 2005, 10:04 AM

Quote:

Originally Posted by bloody-orc

oki-doki

but now the software problem.
What stages must i go through?
wrom where to where is this code sending\recieving the U\S beams? and how is it sending it?

http://www.eng.uah.edu/~wells/cpe437...de_listing.htm

I don't see the problem?, the code is very well commented, with the transmit and receive routines clearly named.

bloody-orc · 23rd June 2005, 12:25 PM

yes for you it is easy, but i dont speak this language. for me it's chinease(i'm not from asia). i need it written in english.
like this:
pulseout 10ms pulse from pin 3
wait\nap\pause
togle pins
pulseagain something
wait\pause\nap
read something (what i must read? must i count or mesure? how?)
calculate (how?what?)

Roboticinfo · 23rd June 2005, 12:27 PM

That is pretty easy to follow

what language do you use?

basic,C++ and elec?

bloody-orc · 23rd June 2005, 12:31 PM

kinda basic but i use programming editor, the picaxe language, what is kinda like writing english. there is no calibrating or something like that. Thats why i need this. In the summer i plan to at least try to learn this basic.

addyismad · 24th December 2005, 04:20 AM

google search for srf04 module...

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22nd June 2005, 09:36 AM	(permalink)
bloody-orc	ultrasonic range meter Hi there! I'm planing to build a ultrasonic range meter for my robot. I searching for easy schematics, that i could use with my pic(axe). Has anyone some good schematic? aslo i would like to know, how is this programming done? pulseout reading? calculating the value into cm's(how do i do that?) sending data to lcd\PC(this is the part i know ) any good links\tutorials? all help is accepted. __________________ Need Help? Press F1 If that doesn\'t help you, ask me... I might know better.

22nd June 2005, 09:41 AM	(permalink)
Roboticinfo	reply http://www.eng.uah.edu/~wells/cpe437..._schematic.htm __________________ Robotics is heaven in my book.

22nd June 2005, 10:47 AM	(permalink)
bloody-orc	do you know if it works also? all other i have seen have a amp on the Tx part aswell. why is there none. And still when i use tjhis what should my software look like? has anyone any idea on the schematic that those modules have? they are only 3pin'ers 1 for gnd 1 for v++ and one sends out pulses, that i mesure. is this hard to make? this would be ideal for me __________________ Need Help? Press F1 If that doesn\'t help you, ask me... I might know better.

22nd June 2005, 08:33 PM	(permalink)
DigiTan	I had a schematic like that from a McGraw-Hill book on BASIC Stamps. Their code was in BASIC of course, but it still might be useful. I'll check for thier link or a .gif for you if you're interested. __________________ The most-hated young engineer in America. * AVR Projects * Robot War: TI * About

22nd June 2005, 08:35 PM	(permalink)
Roboticinfo	reply The circuit works there is no need to. __________________ Robotics is heaven in my book.

22nd June 2005, 08:42 PM	(permalink)
bloody-orc	ok if it wors, then how should the software look like in the pic(axe)? and also, why is the Tx connected to 2 output pins? can't i use only one? __________________ Need Help? Press F1 If that doesn\'t help you, ask me... I might know better.

22nd June 2005, 08:43 PM	(permalink)
Roboticinfo	reply The software is on that page __________________ Robotics is heaven in my book.

22nd June 2005, 08:49 PM	(permalink)
bloody-orc	ok this is written in language i can't understand. could someone make me a summary maybe? like what i must do. i saw a lot of nap'ing there... like what is this for etc. i dont need this lcd thingy also. i just need to get a mesurment in one byte in cm's __________________ Need Help? Press F1 If that doesn\'t help you, ask me... I might know better.

23rd June 2005, 08:55 AM	(permalink)
bloody-orc	oki-doki but now the software problem. What stages must i go through? wrom where to where is this code sending\recieving the U\S beams? and how is it sending it? http://www.eng.uah.edu/~wells/cpe437...de_listing.htm __________________ Need Help? Press F1 If that doesn\'t help you, ask me... I might know better.

23rd June 2005, 12:25 PM	(permalink)
bloody-orc	yes for you it is easy, but i dont speak this language. for me it's chinease(i'm not from asia). i need it written in english. like this: pulseout 10ms pulse from pin 3 wait\nap\pause togle pins pulseagain something wait\pause\nap read something (what i must read? must i count or mesure? how?) calculate (how?what?) __________________ Need Help? Press F1 If that doesn\'t help you, ask me... I might know better.

23rd June 2005, 12:27 PM	(permalink)
Roboticinfo	reply That is pretty easy to follow what language do you use? basic,C++ and elec? __________________ Robotics is heaven in my book.

23rd June 2005, 12:31 PM	(permalink)
bloody-orc	kinda basic but i use programming editor, the picaxe language, what is kinda like writing english. there is no calibrating or something like that. Thats why i need this. In the summer i plan to at least try to learn this basic. __________________ Need Help? Press F1 If that doesn\'t help you, ask me... I might know better.

24th December 2005, 04:20 AM	(permalink)
addyismad	google search for srf04 module... __________________ absence of evidence is not evidence of absence