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Recent content by pmtwiss

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    Looking for a VERY Advanced PCB Fabricator and/or Assembler

    Hey Sunny, Thanks for the suggestion. I know Sierra quite well, in fact, they are making a board for me right now as well. They are pretty good actually, but quite expensive. I have also met Amit before in the past, small world. The only issue I have is if they have mass production...
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    Looking for a VERY Advanced PCB Fabricator and/or Assembler

    Thank, yes I always do that. This company does not do assembly looks like. I can find many companies which can to the flex circuit, but no one can assemble it. Based on their site, it looks like they work with an asia house. - Looking for an advance PCB fabricator + Assembler - Looking for an...
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    Looking for a VERY Advanced PCB Fabricator and/or Assembler

    Hello, I am currently working on a design which pretty much pushes the possibilities with PCB design. Currently I can only find a single company capable of fabricating and assembling the design. I can find several companies to implement the fabrication of the flex circuit, however only 2 Ican...
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    Motor Encoder Noise Issue - Please Help

    That's what we suspected as well so we did a quick test and broke out the motor leads on a separate cable from the power/signal lines. The same noise was still present. Would a choke on the motor leads help if they are on separate cables?
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    Motor Encoder Noise Issue - Please Help

    Hello, I am using the Avago AEDR-8500-120 IC for a motor rotary controller, and I am having large noise transients on the 5Vdc into the IC, and on the encoder lines. I am a well experienced PCB design, but new to motors. I have attached the schematic to this email. It's fairly simple. The...
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    [Moved] Freescale: KL02 & MQX Lite - Need Opinions

    Hey Everyone, Looking to implement a system using the Freescale KL02 series MCUs, and possibly using an RTOS such as MQX Lite. Though it seems pretty cool from what I have read, I am looking for people who has experience using this chip, and using an IDE with this (Code Warrior or Keil(using...
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    Altium Footprint Samtec

    Hey Keyur, The date on this connector is march 2004....that is 8+ yrs old. More than likely this connector is obsolete. You can call them to see if they can give you a replacement part, but more than likely you're going to have to find a connector that can replace this one all together. Why...
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    Has Anyone Routed USB2.0 on Standard 2-LayerBoard?

    OK so I got it thanks, works ok, give me ballpark area...but from the pic of that other calculator...it is off. The rogers says 90-ohm differential is ~25 mils width, this pic says 14 mils...kind of a big difference. I guess I can choose right in them middle and be fine. -Peter - - -...
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    Has Anyone Routed USB2.0 on Standard 2-LayerBoard?

    hey LM, I checked out their site and signed up but I didn't see anything like that...all I saw was a copper thinness, temp calculators...and a microwave calulator app. I found this: https://obrazki.elektroda.pl/79_1309087178.gif What program is this? THanks, -Peter
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    Altium Footprint Samtec

    Hey keyur, do you have the datasheet for it? I couldn't find it for you either :( the ASP series exists, but that part # doesnt seem to exist. Double check the part #, or perhaps call Samtec and ask them what is up with the part number. Finding connectors is an artform, and also the biggest...
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    Has Anyone Routed USB2.0 on Standard 2-LayerBoard?

    Hey LM, Read that article. Nice thanks! I knew of the coplanar waveguide technique, by using Saturn PCB tool, however they do not do it for differential pairs. Do you know of a CPWG-differential pair calculator? Thanks
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    Has Anyone Routed USB2.0 on Standard 2-LayerBoard?

    Hey Loosemoose(awesome name!) Yeah thanks for the confirmation, I have done tons of high-speed stuff but when I did the calculation for 90-ohm on a 2-layer 62 mils board, the trace came to ~40 mils...which are gigantic....I was shocked. Basically, I never knew the plane distance effect a...
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    Altium Footprint Samtec

    Hey Keyur, Go to Samtec's website, they have altium foorprints. You can import it in and copy it into your library, -Peter
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    Has Anyone Routed USB2.0 on Standard 2-LayerBoard?

    Hey Guys, Making a wuick test board using Advanced Circuit's $33, 2-Layer Board special. here are some of the specs: - 6 mil trace / space minimum - 15 mil drill minimum hole size I need to route USB on this board, but it is a simple 1oz copper 2-layer board. Thus from bottom layer to top...

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