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  1. S

    Controller Board Recommendation?

    Looking for a PC/104 system (or similar) with at least 2 20+ bit A/D's and a couple of 16+ bit D/A's. Also needs to have Ethernet either built in or as a expansion. Can anyone offer a suggested vendor they have used? Thanks!
  2. S

    Home theatre system schemantic??

    Sounds like a question the folks at https://www.avsforum.com/avs-vb/ would be able to help with. Good Luck
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    Non-Contact Fiber Optic Coupler

    I have a concept that should achieve 95-98% efficiency according to the analysis. The switching is mechanical, i.e. it couples the sensor fiber optic to the different input fiber optics one at a time. Two sets of ball lens are used to collimate the light & re-focus it into the mating fiber. If...
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    Non-Contact Fiber Optic Coupler

    Hi, I have a project that needs to multi-plex a number of fiber optic cables which collect broad band light sample information and present it to a single sensor. There is no "data" on the fiber optic, we will be just looking at the spectral distribution. Low switch speed is not a problem, low...
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    Electronic Gyro Design

    gyro design Here are a couple more sites to look at; https://www.spp.co.jp/English/jigyou/jigyou-e.html https://www.acroname.com/robotics/parts/R40-MX-9100.html The later one is a single axis, but pretty inexpensive. Good Luck
  6. S

    Developing a color sensor for bean detection

    There are a number of optical methods for determining the spectral content (i.e. color) of an object. Perhaps the simplest (at least conceptually) would be to use a band pass filter designed to block the accepted color spectra and pass only the reject color spectra. Then a simple photo...
  7. S

    IC for temperature measuring with precision of 0.2 degrees C

    ds18b20 subzero Are you looking for "accuracy", "repeatability" or "sensitivity"? These are three very different concepts that frequently are confused or lumped into a simple requirement for "accuracy" Accuracy: A measure of how close a measurement is to a defined standard - such as the 1990...
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    Full design of a 70 MHz Digital Oscilloscope - RS232

    oscilloscope rs232 interface Hi, I had no problems with the bitscope or home.wxs links. I agree that the dsoworld link seems to be gone. If you are linking on the link & expecting to go there - it does not work that way. You need to edit the link to add missing or remove extraneous...
  9. S

    How to measure distances ?

    Motor w/ Position Feedback If you decide to do a mechanical feedback system instead of non-contact measurement, I might suggest looking at either the Maxon line of brushless motors. And/or the Smartmotor line of brushless motors & controllers. We have used Maxon motors to provide an optical...
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    How to measure distances ?

    Distance Sensors There seems to be a great deal of interest in ranging and distance measurements. Perhaps the group would find this comparison of different methods of use; https://dmtwww.epfl.ch/~jzuffere/RangeFindersComp_E.html And for a good source of various low cost sensing...
  11. S

    Help me build a servo Controller for a robotic arm

    servo controller schematics They are a bit expensive, but I recommend you look at the SmartMotors from Animatics Corp. They offer a combination brushless motor/encoder that has a RS232/RD485 addressable controller that will drive the motor to a specific position, at a constant speed, at a...
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    Optical Sensor -software to design/simulate lens system?

    Hi, Sorry if this is a duplicate message. If you are not an optical designer (and I am not), you might consider trying TracePro. It is easy to use and allows you to add antireflection coating, etc. I find it is good for visualizing the rays, especially if you have a stray light problems...
  13. S

    EL Panel Dimming - please help

    Thanks for the assistance. Now that I am enlightened, I am off to try to make the panel dim!
  14. S

    EL Panel Dimming - please help

    Hi, I am putting together an EL panel for an instrument panel backlight. It has a 12 VDC input and a 170 VAC EL panel drive. I have been unable to find any info on how to add a dimming feature. I am assuming it is simply a pot inline on the output. But what resistance? Is that really where it...
  15. S

    EL Panel Dimming - please help

    Hi, I am putting together an EL panel for an instrument panel backlight. It has a 12 VDC input and a 170 VAC EL panel drive. I have been unable to find any info on how to add a dimming feature. I am assuming it is simply a pot inline on the output. But what resistance? Is that really where it...
  16. S

    EL Panel Dimming - please help

    Hi, I am putting together an EL panel for an instrument panel backlight. It has a 12 VDC input and a 170 VAC EL panel drive. I have been unable to find any info on how to add a dimming feature. I am assuming it is simply a pot inline on the output. But what resistance? Is that really where it...

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