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kenemon

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  1. Like
    kenemon reacted to zeke in LS Research TiWi-R2 Module PCB/Booster Pack   
    Don't feel bad!
     
    Making mistakes is perfectly normal and they are perfectly acceptable. Anyone who criticizes you for making a mistake deserves to be knocked to the ground!
     
    Making mistakes means that you're that much closer to achieving your goal!
     
    The first thing that I would recommend is that you go to your local tool store (Harbour Freight, Princess Auto) and buy a set of digital calipers. Use them to measure all the important mechanical dimensions of your parts. Compare them to the datasheet. If they agree then create the component footprint yourself. When it comes to datasheets, they LIE sometimes. Engineers are not known for their love of documentation. They hope no one notices.
     
    The second thing to do would be to have someone you trust to take a look at your schematic and layout. Ask them to be objective and act as an Editor. Give them permission to question your design decisions. They just might save your bacon with a simple question "Does this look right?"
     
     
    In the future, I would be willing to take a look at the pcb layout and offer comments if you think you might benefit from that.
     
    And that offer stands for anyone else doing pcb layouts.
  2. Like
    kenemon reacted to bluehash in LS Research TiWi-R2 Module PCB/Booster Pack   
    Learn from your mistake. For a first job, it come out well.
  3. Like
    kenemon reacted to gwdeveloper in differential photo sensor   
    If you configure your ADC to use the DTC, it will happen so fast it will appear simultaneous. Since you're using INCH_0 and INCH_1, you can set the ADC to sample those sequentially and continuously.
     
    See this post http://www.43oh.com/forum/viewtopic.php?f=8&t=1418 for a tip on making the DTC data easy to read.
  4. Like
    kenemon reacted to gwdeveloper in ADC10 Using Data Transfer Controller   
    That should work just fine. You can still allow the CPU to sleep if you use continuous mode; the peripheral runs independently. The DTC, simply, allows you to grab the conversion data from any function at any time. On the F2274 I am working with, I have Timer B set to wake the system up every 1s, sample 4 channels 8 times, run calculations, transmit and sleep. Using the WDT is just a different method.
     
    BTW, I use Grace as well. In the DTC address slot, following my example, you can put 'ADCdata' in place of the number. As long you have declared the volatile int ADCdata[x] in your main.c
  5. Like
    kenemon reacted to bluehash in simple laser security system   
    Kenemon: This guy uses two ADCs, connected to LDRs via a voltage divider. May be of help.
  6. Like
    kenemon reacted to username in simple laser security system   
    Sending an analog transmission via a laser would be a rather large pain in the butt... would require some careful calibration of the LED head. Or you could PWM the laser and have a RC filter on the output... that would equally be painful.
     
    Anyhow, for my project I just used a digital signal as observed in the youtube clip. Here is a schematic representation of my input + the laser.
     
    *(note the fun site is clipping my image .. link below to full image )
     

  7. Like
    kenemon reacted to rockets4kids in Solar Tracker   
    Here are some app notes that will help you with using photodiodes (which includes standard LEDs)
     
    http://vorlon.case.edu/~flm/eecs245/Dat ... evices.pdf
     
    http://sales.hamamatsu.com/assets/appli ... 043e07.pdf
     
    Enjoy!
  8. Like
    kenemon got a reaction from GeekDoc in ProFLEX01 Eagle library   
    Thats a tough one Doc, I am not an expert. I know that the coils have a specific design according to the wavelength of the signal under consideration, as however simple they sometimes may be. If it were me i would get a very cheap adapter cable and try it out. ie:
     
    http://www.ebay.com/itm/New-SMA-KY-WiFi-Wireless-Adapter-Antenna-Coaxial-Cable-/180604304193?pt=AU_Components&hash=item2a0cdafb41
     
    So I take it you are not interested in a group production for the PCB at this time?
     
    KB
  9. Like
    kenemon got a reaction from GeekDoc in ProFLEX01 Eagle library   
    Found another Doc,
    http://www.ebay.com/itm/Laptop-Wireless ... 19bc213d8c
     
    2 for that price, takin like 2 weeks from China to Chicago lately. I think the rigid ants usually have better range, but such a deal
     
    Someone should buy a bunch and trade for boards... 8-)
  10. Like
    kenemon got a reaction from GeekDoc in LS Research zigbee?   
    mentioned earlier to Doc
     
    this one:
     
    http://www.ebay.com/itm/New-SMA-KY-WiFi-Wireless-Adapter-Antenna-Coaxial-Cable-/180604304193?pt=AU_Components&hash=item2a0cdafb41
     
    but I just came across this as well for 2 of them and doesnt need adapter...
     
    http://www.ebay.com/itm/Laptop-Wireless-WIFi-Mini-PCI-pci-e-Card-U-FL-Antenna-/110530477452?pt=LH_DefaultDomain_0&hash=item19bc213d8c
  11. Like
    kenemon got a reaction from GeekDoc in ProFLEX01 Eagle library   
    You got me thinking Doc, and it would be a waste not to provide for the onboard antenna. Is this what you had in mind?
     

  12. Like
    kenemon reacted to RobG in PCB breakout boards   
    proflex1.sch.zip
  13. Like
    kenemon reacted to bluehash in PCB breakout boards   
    Make a head count first. I mistook the dimensions as 10PCBs for $10. But this is larger. Let me know once you place the order out, I'll Paypal you $25.
  14. Like
    kenemon got a reaction from zborgerd in ProFLEX01 Eagle library   
    Does this appeal to anyone more?
     
    This will fit on the LP and mount the FLEXpro module. It provides access to another MSP if needed, and also allows for the J3 connections to use the programmer. Additional blank pads are provided for custom circuitry.
     

  15. Like
    kenemon got a reaction from GeekDoc in ProFLEX01 Eagle library   
    Does this appeal to anyone more?
     
    This will fit on the LP and mount the FLEXpro module. It provides access to another MSP if needed, and also allows for the J3 connections to use the programmer. Additional blank pads are provided for custom circuitry.
     

  16. Like
    kenemon reacted to zborgerd in ProFLEX01 Eagle library   
    I think it's cool, even if it only really benefits the most from snapping right in and using the emulator without a G2 value line uC installed. Though I know that others might not care for it since the ProFlex already has a more powerful uC built-in. I like how compact it is. Snap a ProFlex right onto the LP and throw it into a small enclosure and you have radio and USB, and you can easily attach other peripherals.
  17. Like
    kenemon reacted to RobG in PCB breakout boards   
    One word of advice, go to http://circuitpeople.com/ and verify your Gerber files, especially fonts.
  18. Like
    kenemon reacted to HylianSavior in PCB breakout boards   
    If you have the gerber files, that's all you need to have the PCB made. There shouldn't be any reason to import them into Eagle.
  19. Like
    kenemon got a reaction from zeke in LS Research zigbee?   
    very well done production. he was using python and arduino and he mentioned a web socket and telnet connection. Very smooth operation but i couldnt find his code :cry:
     
    I saw a couple dudes at Cornell that used the msp and ezrf2500.
     
    http://jeremyblum.com/2011/05/14/msp430-wireless-weather-station/
     
    it looks like TI has some good software which works. They programmed their GUI in "Processing", http://processing.org/ and are sharing all of it. I am still pondering schematics here.....
  20. Like
    kenemon reacted to HylianSavior in CC1101 BoosterPack   
    After reading some of the Launchpad shield discussion here and while I'm waiting around for my Chronos, I figured I would design a nice Arduino-style "shield" to go on the Launchpad that uses the CC1100 sub-1GHz RF chips to interface with the Chronos. The CC1100 only uses SPI, so the shield should be stackable (in theory).
     
    Here's an initial schematic I whipped up-
    Edit: Gah, I screwed up with the left side headers. No biggie.

  21. Like
    kenemon got a reaction from zborgerd in LS Research zigbee?   
    I came across these promotional items the other day:
     
    http://components.arrow.com/part/detail ... 91464N1044
     
    Try not to be to greedy, and shipping isnt so cheap!
     
    they are difficult to work with, ie the 1/2 pin pads are spaced at 1.27mm
     
    Have some fun and please share your successes!
     
    KB
  22. Like
    kenemon got a reaction from RobG in LS Research zigbee?   
    I came across these promotional items the other day:
     
    http://components.arrow.com/part/detail ... 91464N1044
     
    Try not to be to greedy, and shipping isnt so cheap!
     
    they are difficult to work with, ie the 1/2 pin pads are spaced at 1.27mm
     
    Have some fun and please share your successes!
     
    KB
  23. Like
    kenemon got a reaction from bluehash in LS Research zigbee?   
    I came across these promotional items the other day:
     
    http://components.arrow.com/part/detail ... 91464N1044
     
    Try not to be to greedy, and shipping isnt so cheap!
     
    they are difficult to work with, ie the 1/2 pin pads are spaced at 1.27mm
     
    Have some fun and please share your successes!
     
    KB
  24. Like
    kenemon got a reaction from oPossum in LS Research zigbee?   
    I came across these promotional items the other day:
     
    http://components.arrow.com/part/detail ... 91464N1044
     
    Try not to be to greedy, and shipping isnt so cheap!
     
    they are difficult to work with, ie the 1/2 pin pads are spaced at 1.27mm
     
    Have some fun and please share your successes!
     
    KB
  25. Like
    kenemon reacted to RobG in Rotary Encoder and the LP   
    Here it is funct.rar
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