RoboticsConnection User Forum / Serializer Robot Controller Support / RoboticsConnection Hardware Support

Gyroscope for serializer

Doom1992 — Thu, 31 Jul 2008 03:39:35 GMT

Hello there. Is there a gyroscope that can be plugged into the serializer. I would like to mount the gyro and serializer on a Trex 600 Nitro Heliccopter.

Serializer PID setting for Stinger

Paul — Tue, 12 Aug 2008 17:58:34 GMT

I have recently purchased a Stinger robot kit and a Serializer. The Serializer User Guide says that the default PID setting are for the Traxster Robot. Are the PID setting for Stinger robot kit available?

thanks in advance

Uber newbie question

Corstens — Wed, 13 Aug 2008 08:14:44 GMT

Hello everybody,

I am very new to electronics and microcontrollers but i want to get my hands dirty with some tryout/hobby projects.

I have an extensive knowledge of ms programming languages (c#/vb.net) and came across a few articles about usb hardware interfacing. It sounded pretty cool! After some surfing around i found that there is an extensive community on embedded electronics/robotics out there and it al seems a bit overwhelming at first.

I really like to get started with fiddling about at first and i was wondering of you guys could give me some advice. I have narrowed it down to 3 controllers to chose from, all because they support ms .net programming which i am formiliar with.

- Phigets 8/8/8 board
- Makezine controller
- RoboticsConnection Serializer .NET Robot Controller

they al seem pretty straight forward but which one is best for me as a beginner and which one is best value for money?

Concerning the Phigets board, i googled around a bit and i cant seem to determine if i can control servos and motors whith it directly, or do i need the motor controller? Can these two work together? Again, i am a extreme newbie so these could be pretty sumb questions...

Is the Arduino board a good choise aswell or is that a little more complex to start with? I have the feeling it does... please advice...

And in general, how did you guys get starterd? What did you buy, what was your first project, etc. I think it will really help me get going!

Look forward to your replies,

Thanks in advance,

Corstens, Netherlands

serializer WL and Linux (FC6)

csdude — Tue, 08 Jul 2008 16:10:08 GMT

Hello,

I am considering buying a serializer WL board with the USB module.

Does anyone have experience using it ?

Is it as simple as sending some commands over a serial port and getting some responses back ? (a la sending commands to a hayes modem for example ?)

What is in the C++ library ? Is it pretty much the same as what is in the libraries that can be used with MS visual studio ?

Is there a a 'protocol' description/definition for communication with the board?

Is there someone who actually got it to work in Linux/Fedora?

(If it is a simple serial text/ascii based protocol it shouldn't be too difficult.)

sorry for the large number of questions, but I want to know what my options are before I buy the board.

thanks,

Ron

Serializer reset(?) when PID Controller accessed by multiple threads

pirobot — Tue, 22 Jul 2008 11:46:34 GMT

Hi Jason et. al.,

I am developing a Serializer-based robot together with a multi-threaded C# control program over a Bluetooth serial link. The different threads control different behaviors depending on sensor input, kind of like a subsumption hierarchy. For example, one of the threads simply causes the robot to wander randomly by choosing random distances and angles to send to the PID Controller methods. Another thread monitors a pair of bump switches and, if a bump is detected, it executes a stop/backup manoeuver by sending the appropriate commands to the PID Controller.

The problem is that when a bump is detected and the stop/backup commands are sent to the Serializer, my various threads seem to die and the robot stops moving altogether. If I stop and start my timer loop that contains PumpEvents(), I can get it going again. I'm theorizing at this point that the Serializer doesn't like to get hit by PID commands simultaneously from more than one thread, but I am just guessing at this point. Before I delve deeper into the code, does this make any sense to you?

Thanks!
patrick

Can still get to the old forum from a RoboticsConnection web page

bmanncsci — Tue, 22 Jul 2008 08:16:34 GMT

I can still get to the old forum from another page.

There is a link near the top right of this page to the depricated forum.

http://www.robotics-connection.blogspot.com/

Trouble communicating with Serializer using a ZigBee Modem

bmanncsci — Tue, 22 Jul 2008 07:49:17 GMT

I have set up Visual Studio 2005 to run the TraxsterDriveService.sln.

I have extracted the RoboticsConnection_Services_MSRS_1.5.zip file under the samples directory.

I now have the following directories, with appropriate sub-directories:

Microsoft Robotics Studio (1.5)\samples\Platforms\RoboticsConnection\SerializerServices
Microsoft Robotics Studio (1.5\samples\Platforms\RoboticsConnection\TraxsterDriveService

I have followed the instructions in the document (InstallingSerializerServices.txt) incuding the setting the "Specific Version" to false for SerializerServices.Y2006.M08.Proxy and setting TraxsterDriveService as the start up project and setting the proper com port in the SerializerServices.config.xml file.

The solution builds fine however, when the command window opens and after it finishes loading all of the services I get the following repeating line for as long as the program runs:

Unable to open serial port
Initializing SerialIO, Port:3, BaudRate:115200
Unable to open serial port
Initializing SerialIO, Port:3, BaudRate:115200
Unable to open serial port
Initializing SerialIO, Port:3, BaudRate:115200
Unable to open serial port
Initializing SerialIO, Port:3, BaudRate:115200

I have tried other baud rates (9600, 19,200) but get the same repeating line but with the different baud rate.

I am using an XBee RF modem to communicate with the Serializer in the Traxter robot. The drivers for this device emulates a simple serial port that should make it look like a serial com port to the TraxsterDriveService program.

The XBee modem I am using is listed here:

http://www.controlanything.com/Merchant2/merchant.mvc?Screen=PROD&Product_Code=UMXB24P-AWI&Category_Code=ZigBeeModems

The drivers for the device were downloaded here:

http://www.ftdichip.com/Drivers/VCP.htm

by clicking under the comment column where it reads "Microsoft WHQL certified.

Also available as a setup executable for default VID and PID values."

I have installed and configured the drivers for the XBee modem and I have verified that the modem is working using a program called (Device Monitoring Studio) to verify the communications to the device. When the program runs it shows LOTS of activity on USB device. I can capture the activity to a log file if necessary and post it here if that will help.

I get a power on USB LED light when I plug in the modem and when I run the TraxsterDriveService I can see the Rx LED light periodically as if it is receiving a signal from the computer but I never see the Tx LED light even though the activity recorded by the monitoring program seems to indicate it is trasmitting. (THE Tx LED is working since I can see it light when I plug in the modem to the USB port).

If I step through the code I am seeing more detail about the com port. It says the com port is already open.

I have the Serializer board installed in the Traxster robot with a XBee communication module installed and a brand new fully charged battery (it is a 9.6 volt 2200 mAH N-MH battery - tested at 9.99 volts when fully charged).

Bottom line is the Traxster is not responding to commands so any help you can give me to resolve this is appreciated.

Best regards,

Blake Mann

Continuum Software Consulting, Inc.

Mobile: (215) 584-6652

Serializer and VPL

adreas — Fri, 11 Jul 2008 13:26:55 GMT

I've just received and assembled my Traxster and Serializer and am now trying to play around with programming it with MS VPL. I've downloaded and installed the Serializer Services into the location specified. However, being new to robotics and MSRS and VPL, I can't figure out how to see the Serializer Service in VPL. In other words, I don't really know what to do next to start programming my Traxster. Any thoughts for this newbie?

Getting started with the Traxster Control GUI

GregH — Wed, 09 Jul 2008 21:50:07 GMT

Please excuse this question if it's obvious. I'm a newbie with the serializer. I have installed the Serializer .NET Library and want to experiment with the Traxster Control GUI. I have a remote PC connected to my Serializer PCB and intend to run the Traxster Control GUI on a local PC. The two PCs are networked. Is this the correct connection? I don't understand how to start the Serializer Server on the remote PC . Could anyone help get me straight on this please. It is obviously simple because everyone has done it!

Servo Signal Bleeding and its prevention

Narica — Fri, 04 Jul 2008 22:50:11 GMT

I was wondering if there is anything I can do to prevent signal bleeding that occurs across servos.

I am only using two servos on a pan/tilt assembly. The pan servo is continuous rotation.

I noticed that all of the servos will twitch when calls are made for a change of position to any one servo. While this doesn't have "as" adverse affects when using standard servos, it does create major issues with a continuous rotation servo as the position call to the servo is much like that of a motor.

When the tilt servo reaches a certain point, bleeding starts to occur chaning the position of the pan servo causing it to spin uncontrollably.

Is there anything that can be done to the leads to help prevent this bleeding? A resistor, maybe?

Is this something common to the serializer, or maybe an issue with just my board?

Not sure if it helps, but I am using a constant power supply of 12v at 2a.

Thanks for any help that can be offered. :D

how to: install the serializer controller (USB) and create a C# code to control the LEDs

Marcelo — Thu, 19 Jun 2008 11:12:56 GMT

Hi all,

I recently bought the serializer robot controller, the serializer usb module, and the line following sensor.

As a real newbie at this robotic stuffs and I have no idea how to make this board to work. I’ve probably downloaded all files available at [url]roboticconection.com[/url] webpage. After that, I tried to read and of course understand it and as you can see I couldn’t assimilate too much. That’s why I’m here. :P

Ok, what I’m trying to do is very simply.

At first, I just want to make the programmable LEDs to blink it, just like I’ve seen in the guide file. So far I’ve installed the .net Library and written a software (just like the example) using C#. Later, I will try to incorporate the line sensor.

I’ve connected the board using the USB module and also the controller board to a 12V DC battery. I think that is all I need to make work it, right?

When the board is connect to my PC (USB cable) the windows XP try to install the device. It shows “FT32R USB UART” detected but the windows don’t have any compatible driver for it. I’ve also tried the USB Device list with no success.

So which device should I select?

Or do I have to download a driver for it, if so where I could find it?

Since, I don’t know where to go. I’ve tried to move on.

The next step it was the C# code, which compiles without problem, so I run it. A new windows pop up, where I have to select one device (5 Pocket PC devices and 1 Windows CE). I’ve selected the CE one and hit the Deploy button. After that the error message shows up.

Description: ActiveSync is not installed.

File: Device Connectivity Component.

Probably this error of "connectivity" could be avoid if I had installed the board, right?

Hopefully, someone can teach or give me some precious info on how I can make this work. There is any tutorial file like an easy-step-by-step-do-yourself file on the net?

Thanks in advance, I appreciated your help.

Marcelo

Attaching a Range Wizard to a Serializer?

pirobot — Thu, 05 Jun 2008 11:03:58 GMT

Hi Jason et. al.,

I'm guessing the answer to this question is yes but I can't tell for sure from the Range Wizard docs: can I connect a Range Wizard to my existing Serializer via I2C and then use my Serializer's serial port connection (back to my PC) to talk to the Range Wizard? I'm actually using the Bluetooth module with my Serializer and I'm hoping I don't have to have a separate Bluetooth connection for the Range Wizard.

Thanks!
patrick

Serializer board Pin connectors

jibeling — Thu, 05 Jun 2008 10:56:34 GMT

I was wondering if anyone has any part numbers from didigkey for the electrical plugs and pins to connect up to the board. I am looking for 3 pin and 5 pin connectors.

I2C Address

alzb92 — Sun, 01 Jun 2008 12:50:30 GMT

Hi,

What is address'I2C of SerializerBoard ?

I want to connect two master (first it is SerializerBoard and second it's ROVIN).

Thank for response

alzb92

Serializer Power

jljdaigl — Sat, 24 May 2008 13:29:19 GMT

I know the Serializer is meant to take a 12 volt source but what is the range it can safely have as an input?

I have a 12 volt NiMH battery pack and after a full charge it measured at just over 13 volts. How much leeway is there for this controllers input voltage? I don't want to damage it.

Thank you,
Josh

Serializer "freezes" - Communication problem

Theo — Thu, 01 May 2008 05:22:59 GMT

Hi,

I recently purchased a Serializer, I am familiar with microcontrollers and software applications.

Yesterday, I connected an SRF08 and everything worked fine.

Also, I'm writing an application in Visual Basic to communicate with the Serializer.

Today, when I turn on the Serializer ( no sensors on it, no servos, no motors), the green LED flashes normally for a few seconds, and then the power LED blinks fast and there is no communication.
When I use the Hyperterm, and enter the reset command, it responds and then freezes the screen repeating the command.
I also tried the restore command, but the results were the same.

I'm sure there is a damage here, but need to know if it can be fixed.
The Serializer is connected via a USB port.

Thanks
Theo

Serializer .NET Controller vs Make Controller

Blue Solitare — Tue, 13 May 2008 15:15:42 GMT

I'm new to the robotics world and was hoping for some help. I have been looking at controllers and have narrowed it down to two. The two being the Make Controller and the Serializer .NET. What I was hoping for was some info from anybody that has used both and how do they compare? I realize this is somewhat context based, and will depend on what each of the controllers is used for and what my specific needs are. But in a general sense, I want to know what the + and -'s are for each and if anybody has used both.

Your input would be appreciated.

problems encounted when assembling C# program

xmilkbarx — Wed, 23 Apr 2008 20:35:04 GMT

hi jason, i like to ask you something. i have a robot which i have created. i used all the 10 digital GpI/O pinds and 5 analog pins. the pins are as follow.

0 LED digital pin

1LED digital pin

2LED digital pin

3LED digital pin

4 high torque hitec digital servo (arm)

5high torque hitec digital servo (arm)

6high torque hitec digital servo (arm)

7high torque hitec digital servo (arm)

8tilt servo hi tec (turret )

9 pan servo hi tec (turret)

the leds are for the gripper that i have created and lights for the camara turret.

the analog sensor are plug into the analog pins. 5 sensors. (front, back, and 3 on the rotating turret)

here comes the problem. when i write program in c# to turn on and off the led. in a very simple form it works. but when i try to compile my entire program with my other functions, they will not work well even if i did the same codes. it only happens when i compile my entire program together. is there something wrong with the motherboard? because i did upgrade the firmware. all my voltage supply are connected correctly. i iused a 5v 6A voltage regulator to power my arms and servo. where as the board is drawing 12 v of power from a single source batt. pls advice:)

How to reset board to factory defaults

deimos — Tue, 22 Apr 2008 22:12:34 GMT

How would I go about resetting the board to the default baud rate? Setting the baud rate to 115200 caused the board to stop responding to the Bluetooth interface so I am unable to use the 'cfg baud' command.

Thanks,

How to change baudrate of Bluetooth module

deimos — Mon, 28 Apr 2008 12:18:38 GMT

Can anyone explain how to change the interface baud rate of the bluetooth module from 19200 to something else ? I have read the EB100 manual, however the procedures outlined there to not appear to work via from the wireless side.

Thanks,

Serializer Commands Parameters ????

Arnaud — Sat, 26 Apr 2008 08:42:32 GMT

Hi!!!!

Inside the documentation about the serializer you didn't explain which type of constants we can use for initialize ALL Variables (like dpid, vpid).

Ringo you have said at "n_mime" that he can insert float constant inside Dpid(0.1:0:0:1:5) command but when i test it the serializer respond me *ACK* but when i read the dpid eprom he return me 0:0:1:5.

It seem that floating point inside pic wasn't very easy to implement and i think the smallest constant inside your dpid command was *1* ? if it isn't the case can you give me a smaller command for dpid and vpid than (this is the smaller =>1:1:1:1 & 1:1:1:1:1 for me this is null =>"0:0:0:0 & 0:0:0:0:0" and between it is possible ? )

If anybody have test it and can give me more information about Command parameters i'm very interested.

Regards

Arnaud

How configure PID ?

Arnaud — Sat, 19 Apr 2008 15:10:17 GMT

I want to configure PID for my robot with serializer but i don't find anything for calculate vpid and dpid values.

if you have calculate personnal values can you help me

Thanks

Arnaud

what to do with cfg units?

n at mime — Sat, 26 Apr 2008 18:07:23 GMT

as you know, CFG UNITS is available in the serializer.
but what the consequences of setting it to METERS? or ENGLISH?
each of CFG UNITS' commands reply ACK but I failed to match difference.

Problems interfacing to generic I2C device

deimos — Mon, 21 Apr 2008 12:10:00 GMT

We are attempting to interface the Serializer to a Trinamic TMC222 stepper controller on a AVR card interface module using the I2C bus. I was getting no response from the C# routines, and verifying the protocol with a terminal interface returns <NACK> whenever a command is sent to read or write.

The device is factory programmed to address 0. So, to request a register read, I use the command:

i2c w 192 129

The same is true for a read command. Trying to read 9 bytes of register information like so:

i2c r 9

also results in a <NAK>.

It did not appear that you were adding / deleting bits from the message, but trying different variations of the address byte, including setting the read/write bit would not return anything but a <NACK>.

Any insight would be appreciated.

I2C address format

Cheeter — Tue, 22 Apr 2008 16:09:26 GMT

I have a I2C devive that I'm having trouble setting up communication. The manufactures says the following in one place:

"The address for unprogrammed OTP is 1100001 or 1100000. The LSB is set by the pin HW."

And then gives this example in another place for changing the OTP:

"0xC0(slave address);0x90(setOTP Parm);0xFF;0xFF;0xFA(OTP Address);
0x01(new address);

So far all I get back is NAKs. What do you think I should use for the address?

I2C r/w XX?

Wheel encoder

Arnaud — Wed, 23 Apr 2008 04:02:57 GMT

Hi,

another question about PID?

I read p8 that i can use Single or quadrature encoder with PID algo but when i read p23 getenc i'm not sure.

because it's written getenc return the value encoder for channel B Note:the encoder count for channel A are use for internal VPID & DPID algo.

i'm a little lost

Regards,

Arnaud

Heat Problem ?

Silvermatrix — Mon, 21 Apr 2008 23:41:41 GMT

I have a question because heat. For learning C# and wrie programs for the serializer i have connected one Motor, one switch and one Analog Servo.

When I run my Programm and controll the servo on servoPin1 the markes positions on the added pictures get hot. I only must drive the servo 15 seconds.

The Pins on the board are as-delivered conditons. I use a power adapter with 12V, 4A.

Is this normal? The upper position on the pictures is not every time hot. But the Positon down in the picture will be hot when I drive only one Servo.

Bipolar motor

Arnaud — Mon, 21 Apr 2008 01:06:42 GMT

Hi!!

Inside your manual you write : control one bipolar stepper

But you don't explain how to mount it on Serializer ?

Thanks

Arnaud

Can't upgrade firmware via USB or Bluetooth

pirobot — Sun, 20 Apr 2008 08:29:46 GMT

Hi Jason and Ringo,

Sorry to post yet another problem! I'm trying to set up a fairly new Serializer (bought a couple of months ago, just now took it out of the wrapper.) I have both the Bluetooth and USB interface modules and both allow me to connect to the Serializer fine using HyperTerminal. I then wanted to upgrade the firmware from 1.4.2 to 1.5.2 so I followed the instructions in the latest Serializer Guide.

No matter what I try in the Hyperterminal settings, I can't get the firmware to fully load. I get to the point where the number string starts counting in the display, but it only counts for about 10 seconds, then hangs--no more counting, no "Skip" at the end of the line and no completion of the upgrade.

I've tried this with both the USB and Bluetooth interfaces and always get hung at the same point. I've even tried going back to 1.4.2 but it also hangs...

Any thoughts?

Thanks,
patrick

Multiple I2C Serializer slaves

Cheeter — Mon, 07 Apr 2008 18:27:36 GMT

We would like to use multiple Serializers in a I2C network. Ideally one Serializer would be the master and others would be slaves. Alternately, if multiple Serializers could just be slaves we would still be very happy.

Could this functionality be added to the firmware?

Programming Language

jibeling — Sat, 19 Apr 2008 17:39:09 GMT

I see all these commands in the command set summary located in the users guide. What are they for? C? C++? or .net? I would like to use the visual robotics studio, but can that do pulse width modulation? Does Visual studio support a digital joystick?

Lots of questions not many answers yet

John

Serial Cable

jibeling — Sat, 19 Apr 2008 17:59:18 GMT

My computer has the one type and the serializer has the other type of DB-9 connector. Do I need a serial cable extender like this? (straight through type)

http://www.bestbuybusiness.com/bbfb/en/US/adirect/bestbuy?cmd=catProductDetail&showAddButton=true&productID=BB10052320

Or a regular cable like this one?

http://www.bestbuybusiness.com/bbfb/en/US/adirect/bestbuy?cmd=catProductDetail&showAddButton=true&productID=BB10715711

Is there a difference?

Frequency of I2C BUS

alzb92 — Wed, 16 Apr 2008 01:36:21 GMT

Hello,

I searched unsuccessfully I2C frequency.
Could you give me the default frequency.

Thank you

Alzb92

Visual C# temp sensor reading to textbox

jnelso27 — Tue, 15 Apr 2008 14:47:33 GMT

Hello, I am writing a C# Windows Application, not a console application. I need to know how to add the temperature sensor output to a textbox located within the application:

static void tempSensor_TemperatureChanged(SerializerComponent sender)
{
textbox1.Text = "Temp: {0}" + tempSensor.Temperature;
}

Because it is static, I can't seem to figure out how to access the textbox1 to update it with the correct information. Can anyone please help me figure this out. I am fairly new to C# so any help will do. I can show more of the code if needed. Thanks.

Power / Firmware Issue Potentially?

mattmiddleton — Wed, 16 Apr 2008 00:04:25 GMT

I'm currently in the process of exploring an issue I'm having with the serializer, and I was curious if you had any suggestions that I might try. I still have a few troubleshooting options of my own.

Unfortunately, its hard to give you the exact details of the problem since I'm writing in high-level C# code. I will do my best, however to give you the full context of the problem.

I have a PID line following algorithm using the differential motor controller functionality of the serializer. I also have 4 servos, two of which are high torque and used to lift objects via a fork lift mechanism. My PID algorithm works correctly if one of the servos is in the position such that the lift mechanism is down. The robot behaves maniacally if the servo is in the position such that the fork lift is in the raised position. Essentially, I am using the PID to follow lines and maneuver to a can. I then pick up that can and use the PID to maneuver from there. If I comment out line of code that changes the servo's position, my code works fine. If I add that line, it goes crazy.

My hypothesis that I will test tomorrow is that perhaps its a current issue. I will provide the servos with their own power and see if this corrects the problem.

I had originally thought it was a garbage collection issue, but my thread delays do not seem to cause the problem, its the servo code.

I have not had a chance yet to see if the serializer is resetting or browning out when the servo is in the lifted position. I do not think that it is. It seems to respond immediately to my command to tell it to start the line following, but it behaves incredibly erratically from that moment on.

Do you have any other suggestions should it turn out to be a power issue? Could it possibly be a firmware issue such that the serializer is having trouble driving the PWM for the servos and promptly responding to motor control input changes?

Thanks,

Matt

Utilizing the Generic I2C Interface

jsummerour — Sat, 19 Jan 2008 19:22:39 GMT

For those of you who are attempting to communicate with an I2C device from the Serializer, don't forget we provide the 'Generic I2C Interface'.

The interface exists in both the Serializer firmware (see User Guide -> i2c), as well as in the Serializer .NET Library (see Example under Namespace.RoboticsConnection.Serializer.Sensors -> I2CDevice class). So, you can use it from your own custom app, Hyperterm, or from the .NET library.

We added this so that customers wouldn't have to wait on us to add/improve I2C interfaces in the Serializer firmware and/or .NET library. Also, because it's generic, we keep the size of the firmware down. :)

Best Regards,

Motor Support

jljdaigl — Fri, 11 Apr 2008 13:51:05 GMT

I know know from the documentation that the Serializer only supports 4 amps for each motor on the internal H-Bridge, my question is: will the serializer be damaged if I connect a motor that has a much higher stall torque than 4 amps.

For example one motor I am looking at will run fine with only 4 amps, however its stall current is easily over 10 amps, if such a motor were connected to the serializer could it damage it, or will it only provide up to 4 amps, and anything more will just not pass through (I am basically asking if there is overcurrent protection of some sort).

Thanks

PIDMotorController parameters

Gunter — Fri, 11 Apr 2008 00:34:00 GMT

To finetune the PID-parameters for my robot (10” wheeldiameter, motor with 16 count quadratur encoder, 84:1 planetary gear + 2:1 beltdrive) I tried to read all the information about the PID controller from your website: Serializer msdn documentation, example code and - because the default values are for the Traxter drivetrain - the available information about the Traxter motor and drivetrain. And now I have to admit, that I am confused.

In my case the gearreduction is (84*2) = 168:1 = 0.006
But whats about the encoder resolution?
In the PID configuration notes “Determining L by calculation” the Encoder Resolution (ticks per rev) is 624. In the example code and in the msdn documentation the EncoderResolution is set to 4!
624 ticks per rev are the ticks for one rotation of the outputshaft of the Traxter geartrain ( = one rotation of the wheel)?
In my case I would calculate 16*4 *168 = 10752 ticks per one revolution of the wheel. Or is it 16 * 168 = 2688. In my opinion it depends on the way how the Serializer deals with the pulses from the motor quadrature encoder.
As you can see, help is needed again.

Best regards,
Gunter

BTW: The link to the example source code at the end of “PID configuration notes “ will lead you to the example code of the GP2D120 infrared sensor!?

Problem communication with xBee module

alzb92 — Sat, 22 Mar 2008 08:17:36 GMT

Hello, everybody!

I am a new owner of the WL Serializer.

I try to communicate through the module xBee but it does not work.

I did not return to the various commands (fw, reset ...).

When I do a reset I get a lot of characters incomprehensible.

If someone can help me thank you in advance.

Alzb92

External Speed Controller + Serializer?

lovebes — Wed, 02 Apr 2008 00:14:40 GMT

Hi.

I have a problem here..
I have a speed controller that takes in:
PWM cable, 12V/GND
and gives:
Motor +/-

Thing is the PWM cable looks like the three cable input cable like the ones you connect to the
AnalogInput, GpioInput pins. (VCC, GND, signal).

We're using this to drive a DeWalt 12V motor that takes 6.3A when directly connected to a
7AH 12V battery.

If I were to use this with the motor, how should I connect this?
I've already tried to attempt to connect to the external h-bridge jump pins but to no avail..

PLz help! Our presentation deadline is within a week and this is the only thing that is problematic..
All the algorithm is done and all :)

Thanks,

Seungjin Kim