Stuart Posted March 25, 2014 Share Posted March 25, 2014 For those interested in tinkering with hardware, I bought an 8-channel logic analyser the other day - one of these http://www.ebay.co.uk/itm/130993520591?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649 - for the rather stunning price of ... £10. It's a cheap clone of those made by Saleae (http://www.saleae.com/logic) so you cheekily download their free software, plug in your clone analyser, and off you go. Screenshot below of a TMS9995 going about its business ... Stuart. 4 Quote Link to comment Share on other sites More sharing options...
Wickeycolumbus Posted March 25, 2014 Share Posted March 25, 2014 Cool! Do you know if it's possible to sample from multiple analyzers at once to get more channels? Quote Link to comment Share on other sites More sharing options...
Omega-TI Posted March 25, 2014 Share Posted March 25, 2014 Screenshot below of a TMS9995 going about its business ... Is this photo from your system? You actually did this and the software is compatible? Hmmmmmm. I LIKE IT! Quote Link to comment Share on other sites More sharing options...
CantStopClicking Posted March 25, 2014 Share Posted March 25, 2014 For those interested in tinkering with hardware, I bought an 8-channel logic analyser the other day - one of these http://www.ebay.co.uk/itm/130993520591?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649 - for the rather stunning price of ... £10. It's a cheap clone of those made by Saleae (http://www.saleae.com/logic) so you cheekily download their free software, plug in your clone analyser, and off you go. Screenshot below of a TMS9995 going about its business ... Logic Analyser.jpg Stuart. Cool, I like it! And that's in a price range I can consider. Now I'm really liking it... Thanks for sharing! -Dano Quote Link to comment Share on other sites More sharing options...
Omega-TI Posted March 25, 2014 Share Posted March 25, 2014 Cool, I like it! And that's in a price range I can consider. Now I'm really liking it... Thanks for sharing! -Dano That was the UK eBay with free domestic shipping for them. We still have some decent options though. But with the UK Pound being worth more than the US Dollar (exchange rate), and shipping, we'll be paying more. << HERE ARE OUR OPTIONS >> Quote Link to comment Share on other sites More sharing options...
am1933 Posted March 25, 2014 Share Posted March 25, 2014 That was the UK eBay with free domestic shipping for them. We still have some decent options though. But with the UK Pound being worth more than the US Dollar (exchange rate), and shipping, we'll be paying more. << HERE ARE OUR OPTIONS >> Welcome to the my TI buying life Quote Link to comment Share on other sites More sharing options...
CantStopClicking Posted March 26, 2014 Share Posted March 26, 2014 I make it easy on myself and just double the pound for a rough estimate. Still completely reasonable for the information one can gather from such an analyzer. Dang it, now I gotta add another thing to my "wanna buy" list. Thanks a lot you guys!#!@$! -Dano Quote Link to comment Share on other sites More sharing options...
+Vorticon Posted March 26, 2014 Share Posted March 26, 2014 I made my own http://youtu.be/bSpatpVAsus Quote Link to comment Share on other sites More sharing options...
Omega-TI Posted March 26, 2014 Share Posted March 26, 2014 You might want to check this video out before buying... http://www.youtube.com/watch?v=7OCPWCdg2ys Quote Link to comment Share on other sites More sharing options...
CantStopClicking Posted March 26, 2014 Share Posted March 26, 2014 You might want to check this video out before buying... http://www.youtube.com/watch?v=7OCPWCdg2ys I love watching this guys' videos. He's hilarious and actually seems to have some real useful vids. Check out some of his other stuff because he reviews things all the time and seems to be pretty down to earth about their capabilities. Cheers! -Dano Quote Link to comment Share on other sites More sharing options...
CantStopClicking Posted March 26, 2014 Share Posted March 26, 2014 I made my own http://youtu.be/bSpatpVAsus Was that your video or someone else you referenced? I ask because I have a digital oscilloscope and saw in the video he was having trouble getting this to work on the digital one. Cool stuff though! -Dano Quote Link to comment Share on other sites More sharing options...
+Vorticon Posted March 26, 2014 Share Posted March 26, 2014 That's my own video done using my phone cam. I was too lazy to set up the video camera Just a fun little project which allowed me to play with my old Heathkit scope. I just could not get the setup to work on the digital scope for some reason, but this may have been user error as I see no good reason why it should not work... Quote Link to comment Share on other sites More sharing options...
CantStopClicking Posted March 26, 2014 Share Posted March 26, 2014 That's my own video done using my phone cam. I was too lazy to set up the video camera Just a fun little project which allowed me to play with my old Heathkit scope. I just could not get the setup to work on the digital scope for some reason, but this may have been user error as I see no good reason why it should not work... Well good job Walid! I like it! I haven't seen this solution before. My friend loaned me his digital oscilloscope and I've been playing around with it a little bit trying to tackle a few dead boards I have but only being able to watch 2 channels at most is somewhat limiting for logic signals. But, its a start for me since I haven't played with an oscilloscope for, oh, 20 years or so now. Cheers! -Dano Quote Link to comment Share on other sites More sharing options...
chris36 Posted March 26, 2014 Share Posted March 26, 2014 Bought! Been thinking of something like this but hadn't taken the time to do product research. Thanks for posting and example of one that works for TI study. Quote Link to comment Share on other sites More sharing options...
+Ksarul Posted March 27, 2014 Share Posted March 27, 2014 I nabbed one as well--I needed a supplement to my 30-year-old oscilloscope. . . Quote Link to comment Share on other sites More sharing options...
TI-Sissy Posted March 27, 2014 Share Posted March 27, 2014 can you put lil leds in a cart and have different ones light up for different programs? Quote Link to comment Share on other sites More sharing options...
matthew180 Posted March 27, 2014 Share Posted March 27, 2014 I recommend the Dangerous Prototypes Logic Sniffer: http://dangerousprototypes.com/docs/Open_Bench_Logic_Sniffer It is open source, $50, and designed by a community that supports it. I have one and it works well. Quote Link to comment Share on other sites More sharing options...
CantStopClicking Posted March 27, 2014 Share Posted March 27, 2014 I recommend the Dangerous Prototypes Logic Sniffer: http://dangerousprototypes.com/docs/Open_Bench_Logic_Sniffer It is open source, $50, and designed by a community that supports it. I have one and it works well. I saw that was recommended in the comments section of one those YouTube videos. if you can filter out the trolls in the comment sections of the videos, it's a good resource for alternative options/reviews/real-life use. As much as I'd love to build one like Walid's (which I will still probably do) my time is probably better spent just picking up one that's ready to go. Nothing like having to troubleshoot a problem with a troubleshooting tool you just made. <=- circular reference = Dano's head blowing up. Cheers! -Dano Quote Link to comment Share on other sites More sharing options...
+Vorticon Posted March 29, 2014 Share Posted March 29, 2014 As much as I'd love to build one like Walid's (which I will still probably do) my time is probably better spent just picking up one that's ready to go. Here's the schematic if you ever decide to do it. Fun little project Quote Link to comment Share on other sites More sharing options...
publicarni Posted July 22, 2020 Share Posted July 22, 2020 For those interested using a TI-99/4A as a logic analyser, we (TI User Club Mannheim) developed a 16Bit Logic Analyser for the TI in the early 90`s. It uses a special hardware with a 16-Bit port and of course a 16Bit 32K Memory. But the hardware is no longer avaiable, so I thought about using only a TI-PIO as an 8-Bit port. During the last weeks I rewrote the basic routines to support the TI-Pio and modified the measurement routines to 8-Bit only. So have look to the "TI-Spy" an doing some measurements with a "trigger" to start the measurement: 6 Quote Link to comment Share on other sites More sharing options...
wolhess Posted July 22, 2020 Share Posted July 22, 2020 Interesting program, does it work without special hardware, only with the Centronics interface? Quote Link to comment Share on other sites More sharing options...
+FarmerPotato Posted July 22, 2020 Share Posted July 22, 2020 2 hours ago, publicarni said: Mind blown. I would never have thought this possible! Quote Link to comment Share on other sites More sharing options...
publicarni Posted July 23, 2020 Share Posted July 23, 2020 You only need a TI-99/4A, 32k and a TI-PIO (or Centronics). If you have another PIO (Myarc, Corcomp?), I may modify the software. But I need to know which CRU adress and Cru Bits are used to select the 8Bit port for input. Quote Link to comment Share on other sites More sharing options...
+dhe Posted July 30, 2020 Share Posted July 30, 2020 What do you hardware guru's think of this unit? https://www.ebay.com/itm/USB-Logic-DSLogic-Basic-Analyzer-16Ch-100MHz-4Ch-400MHz-Xilinx-Spartan-6-FPGA/133098250816?_trkparms=aid%3D111001%26algo%3DREC.SEED%26ao%3D1%26asc%3D20160811114145%26meid%3D8036a013672c44dea48c452efe75c803%26pid%3D100667%26rk%3D4%26rkt%3D5%26mehot%3Dpp%26sd%3D392790613758%26itm%3D133098250816%26pmt%3D1%26noa%3D1%26pg%3D2334524%26brand%3DUnbranded&_trksid=p2334524.c100667.m2042 For me, the price is right, at <$100 Quote Link to comment Share on other sites More sharing options...
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