tag:blogger.com,1999:blog-4429789698339059066.post3789376185136867634..comments2024-02-27T06:59:55.973-08:00Comments on Yuriy's Toys: DRO Interface Pin Functions for MSP430 LaunchPadYuriyhttp://www.blogger.com/profile/11394499166280606198noreply@blogger.comBlogger19125tag:blogger.com,1999:blog-4429789698339059066.post-58098972833776214052017-07-28T00:13:35.590-07:002017-07-28T00:13:35.590-07:00Hi Yuriy I'm hoping you can suggest a fix. Us...Hi Yuriy I'm hoping you can suggest a fix. Using an igaging/launchpad v1.5 config the app wont read the scale when the clock is connected to any of the axes clock pins (p2.0,p2.1,p2.2) but does when connected to the P1.7 "clk out" pin. Problem is the distance readings are only about one third of the actual distance moved by the scale. I'm only trying it with one axis using an Easyview DRO plus scale. The scale reads correctly when connected to the igaging DRO head. I'm powering it all from the PC while I test the set up. Triple checked wiring and just assume the firmware loaded OK as the bluetooth connects to the Nexus 7 tablet (also have flicking red and solid green leds at the bottom of the board). Any thoughts would be appreciated. Regards PeterPeter Hobbsnoreply@blogger.comtag:blogger.com,1999:blog-4429789698339059066.post-2246484647368042932015-12-29T14:46:54.322-08:002015-12-29T14:46:54.322-08:00I don't know yet. Got a probe two days ago and...I don't know yet. Got a probe two days ago and started experimenting with it. Also, before you invest too much into a board: https://plus.google.com/communities/107302258278364916741 (find post that starts with " <br />I'm ordering some PCBs for a prototype run of a pre-made DRO controller"). It will probably end up being cheaper :)<br /><br />Thank you<br />YuriyYuriyhttps://www.blogger.com/profile/11394499166280606198noreply@blogger.comtag:blogger.com,1999:blog-4429789698339059066.post-34114819719033802322015-12-29T14:06:08.838-08:002015-12-29T14:06:08.838-08:00Can you confirm how the PROBE pin works? I'm a...Can you confirm how the PROBE pin works? I'm assuming I should connect one clip to the mill bit, and another to the work piece, with one of them being connected to the PROBE pin and the other connecting to VCC, since the pins have pull-downs?<br /><br />I'm working on a PCB for the basic MSP430 functionality for an X/Y/Z iGauging style DRO plus Tach and Probe, I'll let you know how it goes once I fab one.Unknownhttps://www.blogger.com/profile/13491335462730029038noreply@blogger.comtag:blogger.com,1999:blog-4429789698339059066.post-69218964887781119722015-10-10T22:48:20.481-07:002015-10-10T22:48:20.481-07:00Yuriy,
Thanks the scales worked just like you sai...Yuriy,<br /><br />Thanks the scales worked just like you said<br /><br /><br />StwvwAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-4429789698339059066.post-4167845446195020102015-10-08T14:21:26.920-07:002015-10-08T14:21:26.920-07:00Yuriy,
Thank you once again, The scale produces a...Yuriy,<br /><br />Thank you once again, The scale produces a square wave.<br /><br />SteveAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-4429789698339059066.post-71885528280052079182015-10-08T13:55:13.568-07:002015-10-08T13:55:13.568-07:00Steve,
A+ and B+ are sufficient, as long as they o...Steve,<br />A+ and B+ are sufficient, as long as they output square waves. A- and B- are complimentary signals and are used for noise cancellation. <br />In fact you would need special chip to connect A+/A- to MSP430.<br />Thank you<br />YuriyYuriyhttps://www.blogger.com/profile/11394499166280606198noreply@blogger.comtag:blogger.com,1999:blog-4429789698339059066.post-12823925323066993862015-10-08T12:20:14.591-07:002015-10-08T12:20:14.591-07:00Yuriy,
You talked about quadrature scales, I'...Yuriy, <br /><br />You talked about quadrature scales, I'm looking at some scales that are not quadrature, these only have the A+ and B+ TTL single and not have the A- B-. My understanding you need the second A- and B- to make it a quadrature scale. My question is this the case and can I use a scale with a TTL single with just A and B non quadrature.<br /><br />Thanks,<br /><br />SteveAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-4429789698339059066.post-36780099170202804702015-09-13T12:27:45.361-07:002015-09-13T12:27:45.361-07:00Any progress on the angular axis?
My project requi...Any progress on the angular axis?<br />My project requires X,Y and Q for a rotary encoder that displays angular readingd in Deg, Min and Sec.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-4429789698339059066.post-81956442183214495502015-05-24T19:32:36.182-07:002015-05-24T19:32:36.182-07:00JIm,
It's not implemented (yet). I added some ...JIm,<br />It's not implemented (yet). I added some hooks for three angular axes but haven't finished the UI, etc.<br /><br />Thank you<br />YuriyYuriyhttps://www.blogger.com/profile/11394499166280606198noreply@blogger.comtag:blogger.com,1999:blog-4429789698339059066.post-8664018980191585132015-05-24T18:37:11.026-07:002015-05-24T18:37:11.026-07:00Yuriy,
This is a great project, hope your still ch...Yuriy,<br />This is a great project, hope your still checking in here. I have a project that needs XYZ and A or an axis expressed in degrees. I only looked at the app briefly, and only saw config for mm or inch, not degrees of rotation. Is this possible?Anonymoushttps://www.blogger.com/profile/17926281184654719150noreply@blogger.comtag:blogger.com,1999:blog-4429789698339059066.post-19309316278812229282014-11-11T07:17:13.193-08:002014-11-11T07:17:13.193-08:00yuriy,
Originally I built the BASIC MSP430 unit, ...yuriy,<br /><br />Originally I built the BASIC MSP430 unit, using only X/Y axis at that time. Since than, I added the Voltage Shifter circuit for the Z-axis I am about to add to my mill. I've noticed in the pin-out pic posted above, you have marked P2.0, P2.1 and P2.2 as Clock line Inputs and P1.7 as Clock out.<br /><br />I'm a bit confused, In the Basic build you have all D- on the micro-usb boards going to P1.7?<br /><br />If I am adding support for HF scales for the z-axis, Do I need to use P2.2 as the clock line and P2.3 for the data line connected through the Voltage Shift circuit? and leave the other X/Y clock lines connected to P1.7?Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-4429789698339059066.post-57082135373674763492014-05-30T01:13:44.522-07:002014-05-30T01:13:44.522-07:00Hi Yuriy
Excellent project I have most of my assem...Hi Yuriy<br />Excellent project I have most of my assembly completed,3 out of 4 scales mounted on my mill, and the beta version of the app on my tablet. I will be using a tach and at a later date a touch probe,at the moment the tach I am using is based on a simple magnet and reed switch. Should the pin for each of these be pulled to vcc or gnd?<br />Thanks<br />Steve<br /><br />Anonymoushttps://www.blogger.com/profile/11579561461927604849noreply@blogger.comtag:blogger.com,1999:blog-4429789698339059066.post-64435764012906236432014-03-22T20:06:16.329-07:002014-03-22T20:06:16.329-07:00Yuriy,
Just found your project, must say, awesome...Yuriy,<br /><br />Just found your project, must say, awesome job!<br /><br />I'm looking to start the DRO build project for my mill. I am looking to build with the MSP430 LaunchPad. I've looked at TI website and found a newer version of the LaunchPad, called the MSP-EXP430F5529LP. Will this model work with your code base? It seems to have more memory, etc...<br /><br />Thanks.<br />Jeff From FloridaAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-4429789698339059066.post-47530975362257816682014-01-29T18:28:07.888-08:002014-01-29T18:28:07.888-08:00Make sure to pull the reset pin up. Make sure to pull the reset pin up. Yuriyhttps://www.blogger.com/profile/11394499166280606198noreply@blogger.comtag:blogger.com,1999:blog-4429789698339059066.post-21603290803165394852014-01-29T18:26:56.939-08:002014-01-29T18:26:56.939-08:00Tried to move the MSP430 off the Launchpad to my o...Tried to move the MSP430 off the Launchpad to my own board but the radio connects then disconnects. Anything I'm missing that the launchpad has I need & missing? Anonymoushttps://www.blogger.com/profile/08733358812200024863noreply@blogger.comtag:blogger.com,1999:blog-4429789698339059066.post-72329152486614050992014-01-16T08:53:45.939-08:002014-01-16T08:53:45.939-08:00Arno,
It would be nice, but the basic setup pretty...Arno,<br />It would be nice, but the basic setup pretty much maxes out the chip. The only two pins left are the LED pins, which are not critical. I think the most viable approach would be to use a two-way bus driver chip and use one of the LED pins to toggle the direction. This way it would be possible to switch to "output" mode, toggle the fast mode and the go back to reading.<br /><br />Regards<br />Yuriy<br />Yuriyhttps://www.blogger.com/profile/11394499166280606198noreply@blogger.comtag:blogger.com,1999:blog-4429789698339059066.post-16582891620599282302014-01-16T01:23:20.621-08:002014-01-16T01:23:20.621-08:00Hello Yuri,
Maybe it's also a good idea to de...Hello Yuri,<br /><br />Maybe it's also a good idea to define some pins or functionality to be able to use the scales<br />in "fast" mode. Per scale 2 bits are necessary. The 1st Bit should pullup the CLK line<br />and the 2nd should pullup the DATA line for a short period of time.<br /><br />Best regards,<br /><br />ArnoAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-4429789698339059066.post-78656108223899115342014-01-15T23:09:24.248-08:002014-01-15T23:09:24.248-08:00Kyriakos,
There is a number of problem with adding...Kyriakos,<br />There is a number of problem with adding a regulator:<br />1. 7805 and 1117 have some dropout voltage. If I remember right, 7805 needs 7V to output 5V, so the dropout voltage is 2V.<br />2. Linear regulators need some minimum load or they won't be stable. That load is on the order of 10-20mA. I don't think the scales draw that current...<br /><br />The solution is to make sure that the power supply is regulated (and clean). Most good phone chargers work well enough; it's the ultra-cheap stuff that might cause problems.<br /><br />Hope this makes sense.<br />YuriyYuriyhttps://www.blogger.com/profile/11394499166280606198noreply@blogger.comtag:blogger.com,1999:blog-4429789698339059066.post-78833369511348162882014-01-15T17:50:30.051-08:002014-01-15T17:50:30.051-08:00Hello Yuri
Can we add a 78L05 on the input for pro...Hello Yuri<br />Can we add a 78L05 on the input for protection?<br />and also is there any meaning to add L1117 on each channel (XYZ)?<br />Kind regards<br />KyriakosAnonymoushttps://www.blogger.com/profile/11252346308327327879noreply@blogger.com