Recent content by Lagomorph

So I figured that it might be a power issue, so instead of powering the board through the JTAG connector (which dicumentation says I can do), I decided to apply external power. So I connected the P_OUT jumper and powered the board by appying 3V (2 brand new C's) and then tried going into debug...

I think the reason that doesn't work is beacuse I have a TI USB-IF and not a J-Link, so if I select J-Link as the connection type, the software can't detect it. What about something like this? Would this work? http://www.sparkfun.com/commerce/product_info.php?products_id=606 I mean... all...

To be more specific, here is what I have: http://microcontrollershop.com/product_info.php?products_id=1298 http://focus.ti.com/docs/toolsw/folders/print/msp-fet430u28.html The picture of the USB interface that I have is here...

Hi, I have an MSP430 USB interface that comes with the MSP-FET430UIF and a JTAG MSP430F2131 header board. Problem is, I have no idea how to load the program onto the MCU that's on the header board through the JTAG connector. I have the IAR Embedded Workbench KickStart software and I haven't...

Thanks for the reassurance. I guess I'll be ordering the kit then.

Thanks for the suggestion. Frankly, I've leaning toward TI just because they have an excellent website that is easy to search through and I feel like I'll know what I'm getting. They also have small student discounts on parts that aren't very expensive. What do you think about this...

Hi, I'm measuring distance using ultrasonic transducers. I will start timing, send a 40kHz pulse from the source and will return the pulse from the target (which will also contain a receiver and transmitter). I need a microcontroller with an analog comparator so that it will detect a certain...

Hi, I have 3 points in 3D space whose positions are known to me and a third target point, whose position I am trying to find. I can obtain the distance between each of the 3 points and the target point. I can easily get 3 equations to obtain the 3 coordinate variables, but these equations are...

What would be the difference in sensing the hand rather than the hand-held device? Both would be essentially in the same position at all the same times. Regardless, I need to fulfill some stringent deadlines, so for now I will impose the constraint that the user must keep the ball in line of...

Ok, so no go on the RF or ultrasound sensing unless I want to impose the line of sight constraint. Better to find that out sooner rather than later. Whether I'm sensing the position of the hand or a hand-held object, I'm not sure what kind of solution you're proposing. As I mentioned above...

Do you really think that they ultrasound and RF will be distorted that badly? Wouldn't that mean that cell phones would would work very poorly if you stood with your back to the base station? I think beeping would be extremely annoying and render the device unusable. Plus, the pulses would need...

Since the ball should be handled freely in free space, it is very much conceivable that the user could get between the ball and the base stations. Would ultrasound not penetrate the human body? How about an RF signal? I figure if the ball is emitting the signal, we don't need anything else...

Right, I guess I wasn't very specific on the use. I would like the ball to be hand-held and freely moved in space. Therefore, I don't think I can use anything that requires line of sight, as I can't guarantee that the body will not be blocking that line of sight. I was originally thinking of...

Hi, I need to make a 3d linear motion detection system for, oh... say a ball. I was thinking of setting up 3 small base stations that would ping something inside the ball and would be wired to a microcontroller that would use a triangulation algorithm to figure out the displacement of the ball...

Hi, I need to make a 3d linear motion detection system for, oh... say a ball. I was thinking of setting up 3 small base stations that would ping something inside the ball and would be wired to a microcontroller that would use a triangulation algorithm to figure out the displacement of the ball...