I didn't lie when I said I was new to this rofl 
So it is 40.695 U.K. Channel Number : 695 European Channel Number 53

I checked out the small gizmo but all the comments say it is not working.

Thanks for the 2,4Ghz info. I was not aware. Seems ebay.be has no RX/TX available. It may be called differently.

Best regards
Jantje

[laatste versie]

heb je misschien een sugestie wat ik zou kunnen proberen?

ptrgr
Ik heb de code met de laatste versie van de library geprobeerd en ik krijg geen foutmelding.

Ik heb al een suggestie gegeven
als ik wist welke foutmelding je kreeg heb ik er misschien nog een.

Met vriendelijke groet
Jantje

Hi
I have build a mow robot that I can control with 3 RC channels and when the RC is turned off the robot goes to automatic mode. As it was my first RC project ever I bought a starters set with 4 channels containing a transmitter and receiver.
After getting it to work the first thing I learned was that "detecting the transmitter was turned off" was not that easy. The receiver -when he lost his connection with the transmitter- continuous to produce the last received signal.
I had never considered it would work this way. As this is a starterkits for airplanes I can fully agree with this design choice.
As a solution I have written code to temporarily disable the receiver to detect the transmitter is turned off but it still doesn't behave "good enough for me"
As I want to build a second robot of the same type I need a new receiver (and probably also a new transmitter). I'm planning to use both of the robots at the same time. As I'm still a dummy on the rc front I would like some advice on following topics

• My current transmitter crystal say:fm tx 40. I assume I better use another frequency for the second robot. Are there limitations in this area? What do I need to look at to avoid interference?
• Are there transmitters you can switch the channel? Even though I want to use both robots at the same time I don't think I will need them both on RC at the same time?
• My current transmitter has one stable channel (I mean when I stop touching the lever, the lever remains in the same position). Are there transmitters with 2 of those. If so I can use the 4th channel to say which robot needs to respond.
• Why Haven't I thought about about using the 4th channel to indicate automatic/RC mode before? 
• Are there receivers which give an error code when reception is lost?
• Which make/type would you advice for me?

I really need some advice here to buy my second set. I'm open to options so if you think you have valid advice outside the things I could come up with please tell me.
Best regards
Jantje.

ik ga maar eens een andere pc proberen,

Dit gaat echt niet helpen tegen compileer fouten.

ik twijfel zelf nog wel over de regel:   int CS = 53

ik heb volgens mij geen pin 53 die ik kan gebruiken als chipselect. ik denk dat dit bij mij pin 10 moet zijn (hangt waarschijnlijk ook van de gebruikte SD lezer af)

Pin 53 riekt inderdaad naar arduino mega. Er is geen pin 53 op de Uno.
Maar weerom kan dat geen compileer fout verklaren.

Met vriendelijke groet
Jantje

ptrgr
Ik heb de code met de laatste versie van de library geprobeerd en ik krijg geen foutmelding.
Met vriendelijke groet
Jantje

Boffin1
I'm amazed about your positive attitude. I think I would have considered getting a shotgun instead of meths when I saw the "pidgeon crap"
I'm really pleased you share this story. Makes me in my little perfect world quite aware there are really differences between countries.
Maybe I should go to foreign countries to learn real life 
Best regards
Jantje

I would advice to use simplot http://www.negtronics.com/simplot (or something similar) to look at the values you are sending to the servo's.
At least then you know whether the problem is in your code or in the electronics/mechanics.
If you have a scope you can also read the signals send to the servo's. I would also check the voltage. I would not be surprised you have voltage spikes because you have 12 servo's.
Best regards
Jantje

have you seen this?
http://letsmakerobots.com/node/33757
Best regards
Jantje

Martijn
Jouw verzoek is in mijn ogen een beetje de omgekeerde wereld.
De meeste mensen willen van knoppen af. Vandaar het grote succes van de touchscreen.

Het is me ook niet duidelijk hoe je een scherm gaat sturen als je het scherm niet ziet. Als je het scherm wel ziet; waarom dan 2 dingen in je hand houden?

Om eerlijk te zijn. Buiten het "Ik kan het" is de enige echte toepassingen die ik zie: hacken en pesten.
Kun jij me een legitiem gebruik geven?

Met vriendelijke groet
Jantje

Dadorcp

Just a sidenote, i want to be able to progress to more powerful hardware with time so looking for best programing language to achive that.

First of all: I think there is no correct place to ask this question. As this is a arduino forum which is C++ oriented the answer here is C++ is a good start.
Go to a Bascom place and they will tell you bascom is a great start; go to a java place ....

As I have a pretty wide background I'll do an effort anyway:
As you are talking about "more powerful hardware" development and micro controller development at the same time I would say C++ (as a language and not as 'my first language') is the only qualifying language.
As far as I know C++ is the only language that has great support on PC/unix/linux -so not application servers;mainframes- and micro controller code development. You willing have to go with proprietary software for the PC part though (read pay license or use trial version of some kind).
Note that -even though you can use the same language- "more powerful hardware" development is majorly different from micro controller development.
This because languages are moving away from the underlying hardware to a higher level of programming closer to "business needs". Whereas on a micro controller you need full understanding of the hardware.

i want to be able to write a program that has a user interface wich controls arduino depending on the user input.

You need a way to communicate between the system that runs you user interface and your arduino. There is only a limited number of integrations.
The once I know are: serial; ethernet; bluetooth; xbee
Only serial is a protocol where C++ can be high on the list of advised languages. IMHO serial is mostly used but (because arduino IDE and serial monitor use it) but is IMHO hardly a preferred choice to put a GUI on top of Arduino.

Conclusion:
For what you want to do you can go with C++ only but it will be far more beneficial and productive to learn more than one language.
The languages to learn will be dependent on the project and tool chain you have in mind.

Best regards
Jantje

I must say I'm really impressed with the effectiveness of this functionality.
Using your tool I succeeded in fixing several bugs in my software which could have cost me several hours to find and fix without it.
Basically I saw that the scrolling halted for a while indicating a "extra delay". Because of the other channels it was easy for me to locate the delay.
I also saw the wrong line moving when I changed something; indicating reading the wrong pins.
And I saw the lines being stable meaning that the analog reads are reliable even when my motor is running. Increasing my thrust in the hardware.

In short: You have made a great tool which allows fast (quickly installed and very basic code changes) and appropriate action.

Thanks a lot

Jantje

you have my vote
Best regards
Jantje

Wauw
That was quick.
It works like a charm. To bad it is written in .net. Otherwise I would add the additional channels myself.
Great work.

Best regards
Jantje

You can, will supposedly take you 100 hours, with 1 hr limit between karma clicking.

Not that he doesn't deserve  it (and you also) as two of the  busiest moderators keeping posts in the right forums & stuff.

If we do it with 10 we can do it in 10 hours :-)

PS there is no time delay when not using the same name. I just tested it with CrossRoads and Graynomad.

Thanks for the positive response.
I referred to the 50 pins of the mega because in practice you need to do some calculations to decide whether you turn the pin on or of.
Simplifying you could say that each pin has some integer value that will put the pin high or low. When you read the pin itself you do not know the integer value.
With your scope it is possible to know the calculation steps. And then 4 is kind of limiting.
For instance currently I have a buggy project that reads 2 potmeters and a distance sensor and a light dependent resistor to decide to activate a motor.
That is already 4 scopes for the inputs. If I also want some inbetween values (or the motor speed) I need to drop a scope line.
Anyways I'll instal the tool now and do some tests tomorrow.
Best regards
Jantje