# Questions about if a "stamp" will work.

#### TheEquineFencer

Joined Apr 20, 2007
34
I'm presently going to school at Pitt Community College in Greenville, NC and starting in the Electrical/Electronics class. I recently found out about "stamps" and would like to get some more info on what they are capable of working. I guess I'm trying to run before I can walk, but I know what I need to learn to do what I want . I have an I idea that I think they may be able to operate but need to find out if they are capable of doing what I need at a reasonable price.
BTW, next year is when we get into PLC programming, but I need to get started now to try to get the idea I have completed. Any ideas on what would be a good starting point after reading what I want to do in the rest of this below?

Here's what I need to do:

1) Using an O2 sensor with a 0-1 VAC output as the input signal to the stamp.

2) Have the stamp give me a Ground output to a 20 light LED bar graph display.
Example: 1 LED = 0 V, 20 LEDs = 1 V 10-11 LEDs would be around .5 V

3) Use the same Ground output to supply the Base of a fast switching Transistor.

4) I'll install a set of DIP switches to select which output LED I want to power the transistors.

5) The O2 reference voltage will be fast switching in the Ms range, how fast will a stamp operate?

#### kender

Joined Jan 17, 2007
264
I would recommend BasicX over BasicStamp. It uses a version of Basic that's close to VB6. It has an input interupt, while BasicStamp doesn't.

You can make a bar graph very quickly with LM3914.

By the way, what's the purpose ofthe device that you're building?

Joined Jan 10, 2006
614
Or if you want real cheap, go with the PicAxe...... A pic chip that is progammed direct from the serial port on a PC in BASIC.

#### jasonhaykin

Joined Mar 8, 2007
23
I recently found out about "stamps"
Hello everybody,
Sorry for interrupting guys but What are "stamps" ?
Thanks

Joined Jan 10, 2006
614
With a BASIC interpretor.