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Recent content by ycroosh

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    Software in the cloud

    Let's talk about your points: 1. Econ. 101 - lower price = more sales is very oversimplified. Each piece of software has a finite Total Addressable Market (TAM). Lowering the price will likely lead to a larger portion of the TAM becoming customers but that is a complicated formula. A simple...
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    Software in the cloud

    Al, These are valid points, but it's "complicated". The software price debate is pretty old and it's somewhat of a religious war, so I don't tink you or I can change too many minds, but let me add some perspective: For full disclosure, I currently work for the largest cloud platform providers...
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    Igaging products

    No worries; people confuse me with Blu-DRO all the time :oops:. I just replied to your email. Regarding Blu-DRO: it's a separate "company" run by a gentlemen by the name Al. He used to buy boards from me and put them into a 3D printed box. He disappeared around April (not responding to my emails...
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    Igaging products

    iGaging scales are designed to be used with battery power and single display, so they don't have any power supply conditioning circuitry in the reading head. When they are used in pairs or triplets on a machine, the cables form ground loops that act as antennas. I was helping a local guy to...
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    Igaging products

    Hoss, How were you trying to contact me? (there is no "them", TouchDRO is my side project, so it's just me). Please email me at yuriy at touchdro dot com. I pretty religiously respond to the emails. Thank you Yuriy
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    Igaging products

    iGaging is a small distributor of Chinese scales based in California. Last time I talked to them they had a dozen or so employees. They simply don't have the manpower to handle any support calls. That said, I've handled hundreds of these scales and had one that was terminally dead. In most...
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    Cheap DIY DRO scale, do they work?

    Sounds good. Thank you.
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    Cheap DIY DRO scale, do they work?

    Exactly. Do you mind if I post your schematic on my blog? EDIT: You probably know this already... Most 1.5V scales have the frame connected to Vcc; most of the other scales have the frames connected to the ground. Unless you isolate the cpacitive scale (and make sure chips can't short it to...
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    Cheap DIY DRO scale, do they work?

    MachineTom, Would this work: http://www.yuriystoys.com/2013/12/selecting-scales-for-dro.html Spoiler alert, though: Chinese capacitive scales aren't going to be better than .0005". On the other hand, I'm SO happy to have an iGaging scale on my lathe, even though I don't trust it for more...
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    Cheap DIY DRO scale, do they work?

    Holt, This looks correct. The only little thing: you can skip R7 and R8. You can tie the two virtual grounds to the first comparator. Thank you Yuriy
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    Cheap DIY DRO scale, do they work?

    Holt, I don't have a PCB layout (yet). Haven't had time to do it yet. More precisely, haven't had time to finish the tachometer and edge probe input, and didn't want to have two different version of the PCB. The (partial) schematic is in one of the posts in my original reply. The stripboard...
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    Cheap DIY DRO scale, do they work?

    Not likely. I haven't seen a USB dongle that works with a table yet. They might exist, but I haven't seen one ... Your best bet is to use a FTDI breakout board (in the USA you can get it from Sparkfun.com. Don't know if they ship to Europe) in place of the Bluetooth transceiver. Regards Yuriy
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    Cheap DIY DRO scale, do they work?

    In that case simply connect Ua1 and Ua2 to the A and B inputs on the adapter board, +5 to +5 and 0V to the ground and you're good to go. Is this the scale you will be using for the cross slide or the longitudinal travel? In any case, the adapter board can do 4 inputs. You need only 2, so you...
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    Cheap DIY DRO scale, do they work?

    Holt, First of all, if you know which pins output the sine wave, you can connect the scales directly to the interface board: http://www.yuriystoys.com/2013/10/voltage-shifter-circuit-for-mixed-scale.html. The comparators will "square" the signal. You might need to replace the voltage dividers...
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    Cheap DIY DRO scale, do they work?

    Holt, I just saw 900mm glass scale on eBay for $108 (free shipping with USA) and one 100mm to 400mm between $88 and $95. I haven't tried that seller, but this is almost cheaper than "AccuRemote" scales. If that is still out of the budget, I would suggest to get a capacitive scale for the long...
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