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1  Using Arduino / Sensors / HC-SR04 does only 5cm on: February 16, 2013, 02:02:23 pm
Hello to you all,

I have a HC-SR04 hooked up on my MEGA, i did it with the trig and echo pin together as described at
Now when i run it i only read 5cm but there is much more space in front, when i used this on a other arduino it work as a charm.
Also when i touch the sender, receiver or xtal it sometimes respond.
I have three HC-SR04's but the all do exactly the same.

Any one is familiar with this problem?

2  Using Arduino / Sensors / Re: Trying to control motor with Ping ultrasonic sensor on: January 29, 2013, 04:11:19 am
If i try this my sensor says only 4 inches 10 cm, when i get out the inches it says 40+ cm, so i guess something is not right.
3  General Category / General Discussion / Re: Where to begin and what is what? on: January 06, 2013, 10:48:46 am
Hello Sledge 21 and all the others...

Also this ( notebook really helped me when I started Arduino.
I wish someone pointed me out on the notebook.pdf but it happened now thanks for that Jared.

4  Community / Bar Sport / Re: Free tech books on: January 04, 2013, 05:05:04 am
Way to go Rob...

Lot's of good stuff out there, (you must love the internet)...
I have seen some stuff also for learning C/C++, well guess i need to digg in to that also.
Than i don't need to ask such stupid questions here also smiley-lol

5  Using Arduino / Project Guidance / Re: Setting and calling defined settings on: December 30, 2012, 01:55:14 pm
Thanks for the tip of the battery's, i thought it wouldn't work well for long...

And yes need to learn from real basic, never used C/C++ before so try to get familiar with it.
I was looking in to a starting kit, this one looks great.

That there is no OS i do understand, done Microchip Pic's years ago, but i thought arduino would be a better choice to
manage all kinds of projects.

Thanks again
6  Using Arduino / Project Guidance / Re: Setting and calling defined settings on: December 30, 2012, 12:26:36 pm
Thanks for pointing me in the right direction Mark.

That it is C/C++ i know, but should i use the if statement to create all the definitions for what i want to do then?
If so it's really plain and simple but a lot to program (but it's part of the fun  smiley )
7  Using Arduino / Project Guidance / Re: Arduino Question on: December 30, 2012, 07:24:35 am
Arduino is much more capable of doing things then the lego mindstorms.

So if you want to program a robot arduino can do the job very well, but it depends also on yourself, i mean you need to do a lot of reading and experimenting to get familiar with the whole concept.
And shure there are extensions which you can use to operate your system, but that needs to be programmed as well.
I suggest you find a board and do some experiments first to start building a robot, or buy a robot thats build on a arduino controller.
I myself have a aar-04 from the cell them at Conrad in NL,DE and UK, it works fine for me to get familiar with the code and functions you can choose and use.
8  Using Arduino / Project Guidance / Setting and calling defined settings on: December 30, 2012, 07:16:11 am
Howdy to you all.

I have a "aar-04 robot" manufactured by Arexx and it has arduino board to program.

I'm wondering how to make multiple predefined code and call them in the program like;

definition1 call pin1 set to high
defenition2 blink 4 times pin8

then program various things
then when x reach >20 launch defenition1
then when y reach >1000 launch defenition2


Anyone knows how to pull this off?
9  Topics / Robotics / Re: which lipo battery to have for robot on: December 29, 2012, 05:17:04 pm
If you know what lipo battery you like to have, it's a good idea to look around on ebay.
You can buy them and also the lipo loaders for a good price...

About the voltage regulator, i guess you need that one for your arduino, so it isn't fried.

To load a lipo you need a charger which is capable to load the amount of cells of your lipo, a one, two or three cell etc.
Also there are chargers available that can load all these kind of lipo's

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