Hi everyone.. I am making a circuit for sensing laser modulated at a frequency of 10kHz. I tried using phototransistors and photodiodes to sense the laser, but...
... Your laser probably isn't actually outputing a modulated signal. The constant current circuit in later lasers have large caps. They can't be externally...
... Look at the beam angle and sensitivity. Lasers put out very little light except down the beam, unless your spot is right on the detector you won't see...
... What kind of phototransistors and photodiodes were you using? IR phototransistors will work reasonably well with visible light so long as you get the ones...
PeterBalch
PeterBalch@...
Jun 1, 2006 6:46 pm
27926
That is how my beam robot heads to the light!! Two Flashing LED "eyes" ... JIMc x22661 National Ignition Facility [Non-text portions of this message have been...
Thanks alan, but i had already changed the lens to spread out the laser. The phototransistor and photodiode i used are clear plastic types and so i do not...
I am not sure if there are any advantages other than their size. Take your volt meter and connect it to the leads of an LED. You will find that it gives off...
... I'm not sure I understand this, but do you mean 1m is too much for IR? I have seen homemade IR links (lens-less) up to 10m, and up to 20m using lenses. Our...
Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the SeattleRobotics group. File :...
SeattleRobotics@yahoo...
Jun 3, 2006 12:27 am
27931
Sorry to confuse you Pedro. But this is only a prototype of an application working on lasers. ... m and that ... IR? I ... using ... frequency of ... the ... ...
... Sounds like a laser modulation to me. How well did the phottransistor respond to a TV remote control? ... I don't understand that. When I tried it...
PeterBalch
PeterBalch@...
Jun 3, 2006 2:39 pm
27933
Hi there, I just tried the seattlerobotics.org home page and the domain name registration expired June 1. I tried to email the secretary @ ...
Hi guys. I've been building a six-legged robot for my graduation thesis, though since i don't have a mechanical background i've miscalculated some torque needs...
hye all .. can someone help me 2 compile the program in this site .. http://www.seattlerobotics.org/encoder/200010/robarnold.html ... Try the all-new Yahoo!...
Greetings, I am working on a autonomous Micro Air Vehicle project that is almost complete. To control the speed and side to side movement, I am using a low...
Charles Meyer
robomaster@...
Jun 3, 2006 7:44 pm
27938
Greetings, I am working on an autonomous Micro Air Vehicle project that is almost complete. To control the speed and side to side movement, I am using a low...
That's a nifty little sensor you've found. Do tell us how it works when you get it to! Are you sure the serial interface isn't just I2C instead of SPI? I'm ...
Hi, everyone, Problem: I can't get the states of bits 4 and 5 of GPIO of the PIC12C508 to change states. As you know, this is the only I/0 port for this chip...
Those are the pins used for the crystal oscillator. Sounds like your simulator thinks there's a crystal there. Check your oscillator settings in every place...
hye there .. im mohd haaziq from south korea ... d circuit .. n im using PIC 16F84A instead of PIC 16F84 bcoz its out of order .. ... Send instant messages to...
It's not really SPI but it is similar. I wouldn't expect a standard SPI port to work. Have you seen this doc? It's for the ADNS-2610 which appears to have...
It does seem to communicate in a manner similar to I2C, though the read/write bit in I2C is sent as LSB I believe. If you use Microchip's C compiler (I think...
Thank you, Tom. Microchip tech support didn't mention that. I figured the bits might not change state in the simulator window, but might respond just fine...
The interface on this chip differs from I2C in that you can not have more than one device on the same bus (at least not as easily). I am not familiar enough...
Decock, I've tried to supply the 6688 with 12V before, and have blown the chip...3 times. So after the 3 servos I decided that adding a wire was a better...
Having problems with message search?
Fill out this form to ensure your group is one of the first to be migrated to the new message search system.
