Pulse info of signal from Futaba Transmitter
gonwei
Posts: 14
Hi all,
I desperately need help here for my project... I need to get the pulse information of the signal transmitted from a Futaba transmitter. The transmitter has a trainer socket with DIN 6-pin configuration.
I tried using PULSIN command to read from one of the pins on a BS2 stamp. I observed that it read 0 when no wire is connected to it, however once i plug in wire it'll give random readings, i suppose that's noise, is it?
Another funny observation is when i touch the wire (connected to the pin on BS2 stamp) on the transmitter's antenna, the servos (i was·trying this experiment·on a BOE-BOT Board of Education) moved at random patterns. I don't understand why...
Can some kind souls pls help to explain why the above observations happen and how should i actually obtain the pulse signal information from the transmitter using the stamp?
Thanks in advance!
kevin
I desperately need help here for my project... I need to get the pulse information of the signal transmitted from a Futaba transmitter. The transmitter has a trainer socket with DIN 6-pin configuration.
I tried using PULSIN command to read from one of the pins on a BS2 stamp. I observed that it read 0 when no wire is connected to it, however once i plug in wire it'll give random readings, i suppose that's noise, is it?
Another funny observation is when i touch the wire (connected to the pin on BS2 stamp) on the transmitter's antenna, the servos (i was·trying this experiment·on a BOE-BOT Board of Education) moved at random patterns. I don't understand why...
Can some kind souls pls help to explain why the above observations happen and how should i actually obtain the pulse signal information from the transmitter using the stamp?
Thanks in advance!
kevin
Comments
Let's start with this. Generally speaking you don't obtain the pulse information from a transmitter, you receive pulse information from the RECEIVER. The receiver obtains the pulse information from the transmitter.
Additionally, any time you do not have a solid electrical connection from a reliable source on a micro-controller pin, one can expect any sorts of random garbage on the pin port. Even the type and value range of the garbage is not particularly predictable.
Regards,
Bruce Bates
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Even if it IS designed to hard-wire to a Reciever module, it's the output of the Reciever module you want, not the multiplexed RF signal output by the controller. The Servo control signal is a 1 mSec to 2 mSec (depending on command position) pulse, repeated every 20 mSec to 50 mSec. THAT'S what the BS2 can both recieve (with PULSIN) and send (with PULSOUT).
Hmm.· A quick perusal of the RF Transmitter docs reveals you CAN use the "DSC" connection to hard-wire to a reciever module.· That's what you'll have to do.· Then, you can connect the 'signal' part of the output of the reciever to the BS2.
Post Edited (allanlane5) : 11/14/2006 3:34:43 PM GMT
I stil have some doubts here:
allan: What do you mean by "...use the "DSC" connection to hard-wire to a reciever module."? What is a DSC connection? How can i do that? Any electronics gadget i need? Sory i'm a total beginner in electronics...
Thanks again! Hope to hear from you again.
kevin
The Reciever then breaks out the signals from the remote, and routes the appropriate signal to servo 1,2,3,4...
I suspect the signal on the "DSC" cable is the multiplexed servo signals, which the reciever knows how to de-multiplex. I have NO idea what the multiplexed signal looks like, though.
Dave
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Dave Andreae
Parallax Tech Support
The radio connected by the "trainer cable" directly to the BS2 to control whatever.....
which it's the command serin ? pulsin? cont?
better will be to have a code ...
Sory my bad english , I'm a native spanish speaker from South america... LOL
That may be a new record.