Show Posts
Pages: 1 2 [3]
31  Using Arduino / General Electronics / Re: geiger tube schematic, help with components sourcing? on: June 27, 2012, 06:20:33 pm
I forgot to mention that I am acquiring the HV power supply from a disposable camera flash. I only need to know the resistors and capacitors. The left side of the schematic ( from resistor R8 down) is optional. I only need to know if the object I'm measuring is radioactive or not. (For radioactive antique hunting.)
32  Using Arduino / General Electronics / Re: geiger tube schematic, help with components sourcing? on: June 26, 2012, 11:28:42 pm
Everything in the schematic (except for the optional part). Although I could be wrong.
33  Using Arduino / General Electronics / geiger tube schematic, help with components sourcing? on: June 26, 2012, 10:58:50 pm
Hi, I recently found a cool schematic for a cheap Geiger counter. The schematic is fairly simple, but since I am new to this, I don't understand the labels they have put for the components. I copied all of labels for the parts and searched them, and I have found all of them (or at least I think so). If anybody could read the schematic and give me the parts list (if I have read it wrong), it would be greatly appreciated. smiley 

Here is the link to the schematic:
http://madscientisthut.com/wordpress/wp-content/uploads/2011/03/Geiger_board.jpg
34  Using Arduino / Sensors / Re: could I use arduino in place of an amplifier in basic geiger counter? on: June 25, 2012, 01:48:01 pm
never mind. I think it might be more simple to follow the original diagram and leave out the arduino. Thanks for the help, though.
35  Using Arduino / Sensors / Re: could I use arduino in place of an amplifier in basic geiger counter? on: June 25, 2012, 12:36:14 pm

Thank you, but I am relatively new to schematics. I know how to read and build all of the parts on the PDF, but where do they lead to? (They look like they are floating.)
36  Using Arduino / Sensors / could I use arduino in place of an amplifier in basic geiger counter? on: June 25, 2012, 01:50:46 am
I want to make a Geiger counter from scratch. I saw a blog on making one but it includes building a 1 shot pulse detector. (To detect pulses from the geiger tube.) Could I instead run the geiger tube to the arduino and tell it to beep a speaker if it receives signal? This would save a lot of trouble.
37  Using Arduino / Motors, Mechanics, and Power / Re: How do I power my 7 v motor with my arduino uno (NEWB) on: May 22, 2012, 08:03:46 pm
Thanks. But how should I power the shield? Will it need a power supply that is at least the operating voltage of the motor?
38  Using Arduino / Motors, Mechanics, and Power / How do I power my 7 v motor with my arduino uno (NEWB) on: May 22, 2012, 07:40:22 pm
Hello, I'm relatively new to arduino. I got an arduino UNO for X-mas this year, and I want to make something cool with it ( I've made a device using a PIR sensor to turn on an LED in my science project this year, but I want to do more.) I was looking through pololu.com and found a chassis with motors, encoders, and everything. The only problem is, the motors included need 7.2 v to operate. The voltage supply on an arduino is of course, less than that smiley-mad.
Could someone tell me how to power these?
39  Using Arduino / Installation & Troubleshooting / Re: I can't type anything on arduino sketch program on: February 25, 2012, 08:34:23 pm
ok. Now it works. thanks sollenoid.
40  Using Arduino / Installation & Troubleshooting / I can't type anything on arduino sketch program [solved] on: February 22, 2012, 08:38:31 pm
I got an arduino for Christmas and decided to try it out today. I installed the drivers for the board and made sure the board was connected to the right serial port. You would think it would work right? Well, the arduino program won't let me type anything for a sketch and I know the program works because I saved a pre-made led-blink sketch to the computer (This was before it stopped working) and uploaded it to the board and the tx and rx lights blinked. The screen is also a blue-purple. Does anbybody know what's wrong?
Pages: 1 2 [3]