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Andrew

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About Andrew

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    RC-Cam'er

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  • Website URL
    http://www.midwesthelicam.com
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  • Location
    Peoria, IL
  1. Andrew

    Help: Can you ID this IR Sensor?

    Here's another site I found: http://www.servo.com/
  2. Andrew

    Help: Can you ID this IR Sensor?

    I think FMA just designs the co-pilot and farms out the manufacturing to a third party. I recently ordered a co-pilot and delays with their manufacturer was the reason I was given why the shipment was delayed. I don't know who manufactures that part, but... You might try here: http://www.photonicdetectors.com/
  3. Andrew

    I2C Circuit Help

    I have a delay of 5 seconds in my code before any of the lines I posted are run. I'll try this suggestion and let you know what happens. I failed to show the line of code where LCD is defined along witht he 5 second delay in my above post. the LCD is defined as 0x50 which is the I2C address of the device. The code I'm using is located in the samples folder after installing PICC Lite. I'm attaching the documentation they included with the sample code. I have customized their example code to use the pins I wanted it to. I'll look through the sample code to make sure it's doing a start and stop for me. If not, I may try modifying my code to do this explicitly. Thanks for all your good feedback. i2c.txt
  4. Andrew

    I2C Circuit Help

    I'm trying to write to a Matrix Orbital LK162-12 LCD screen from a PIC 16F628. This is my first electronics project, so hopefully, I'm just doing something silly. I first tested the LCD from the computer and that all worked ok through the RS232 serial port. The problem is when I try to communicate from the PIC to the LCD over I2C. I'm using the PICC Lite compiler and their sample I2C code. SDA is set up on Pin RA0 and SCL is set up on RA1. I'm not sure I am setting up the PULL-UP resistors correctly. I have a 10K resistor between VCC and RA0 and a second 10K resistor between VCC and RA1. http://www.ping.be/~ping0751/i2cfaq/i2chardw.htm I have an LED connected to RB0 set up to do blink codes so I know what line of code it failed at. The flashled method blinks the specified number of times with a 1 second pause between cycles. Here's a snippet of my code and the line it's failing at: //initialize I2C SCL_DIR = I2C_OUTPUT; SDA_DIR = I2C_OUTPUT; SDA = 0; SCL = 0; if(i2c_WriteTo(LCD)) flashled(1); //Talk to LCD device DelayMs(200); //ClearDisplay if(i2c_PutByte(0xFE)==I2C_ERROR) flashled(2); DelayMs(200); if(i2c_PutByte(0x58)==I2C_ERROR) flashled(3); DelayMs(200); if(i2c_PutByte('A')==I2C_ERROR) flashled(4); DelayMs(200); if(i2c_PutByte('n')==I2C_ERROR) flashled(5); DelayMs(200); if(i2c_PutByte('d')==I2C_ERROR) flashled(6); DelayMs(200); if(i2c_PutByte('r')==I2C_ERROR) flashled(7); DelayMs(200); if(i2c_PutByte('e')==I2C_ERROR) flashled(8); DelayMs(200); if(i2c_PutByte('w')==I2C_ERROR) flashled(9); DelayMs(200); Any help would be greatly appreciated. -Andrew Westberg
  5. Andrew

    Video Conditioner

    How are you getting the video from the camera into the PC? If it's a digital video camera and you're using the USB port instead of firewire, you'll get loss of quality. If that's not your issue, look into a program called virtualdub. I sometimes use it to clean up my home videos as a preprocessor. And it's free to boot! http://www.virtualdub.org/
  6. Andrew

    C-compiler to MPLAB

    I haven't received my programmer yet, but I plan on learning with PICC Lite. The price is very good. FREE! http://www.htsoft.com/products/piclite/
  7. Why did they decide to do a test with GPS? Are we going to launch GPS satellites on Mars just so they can fly their UAV? They should be working on non-gps navigation. I'm assuming they're using a standard combustion engine. How would that function in a lower-oxygen environment like mars? What about the air density of Mars? An aircraft that can fly on earth might not even fly on Mars. I once heard that if you threw a curveball on mars, it would curve the opposite way on Earth. Likely some large implication for any aircraft on Mars. Their experiments look largely like been there done that stuff that the millitary has been doing for years.
  8. CCPM helicopter, and custom transmitter mixing support and optional Vertical sensor to speed up ground calibration. It also has embeded the co-pilot controller inside its own FM receiver. You can no longer use your own receiver with it.
  9. Andrew

    RADAR Altimeter

    Here is a link to the manual for the speedy radar kit. Any ideas on if it's possible to adapt from speed measurements to distance? It runs at 2.6Ghz. http://www.ramseyelectronics.com/downloads...manuals/SG7.pdf
  10. Andrew

    RADAR Altimeter

    $8,241.27 ouch. That's not including the taxes and required export license. Might be a cool project to try to make one on your own, but unfortunately I lack the technical savvy that would require.
  11. Andrew

    RADAR Altimeter

    I won't be surprised if it's $$,$$$
  12. Andrew

    RADAR Altimeter

    I've sent a price inquiry to the Roke folks. I'll let everyone know how much $$$ the unit costs when I find out.
  13. Andrew

    RADAR Altimeter

    My guess is that it's definitely expensive. They make you request a price quote and don't have any pricing info on their website. Do you think it's possible to make a device to measure altitude using radar? Maybe adapt a radar gun sensor from measuring doppler shift(speed) to measuring distance? Maybe hack one of these devices? http://www.hobbytron.net/r-sg7.html
  14. One of the difficulties with telemetry or altitude hold for a UAV(especially helicopter) is accurate altitude readings. Has anyone experimented with using RADAR altitude detection or is this something that is beyond the hobbyist? The Mk IV unit in this link is accurate to 12.5cm. http://www.roke.co.uk/aviation/miniature_r...r_altimeter.asp Cool stuff no?
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