# Need help / advice on a project

#### Cobra Jack

Joined Mar 1, 2006
2
I need a small device that will display three numbers based on voltage from three seperate inputs.

The voltage will be in the range of 0 to 5 volts DC
Each voltage input will need to be looked up in a reference table before displaying a result.

All three input voltages use the same reference look-up table .

Example of the table entries:
VOLTAGE -> Display
----------------------
0.25 -> 248
0.35 -> 230
0.45 -> 212
0.60 -> 194

The Display device should look something like:
http://www.allelectronics.com/cgi-bin/item...4_X_1_LCD_.html
A 24 X 1 LCD display

The operating voltage of the device will be 12 volts.

I'm a computer programmer / software engineer.. I took a few EE courses in college, but I really need either someone to point me in the right direction to get started on this, or I need to pay someone to to do this for me.

any advice is appreciated

#### Papabravo

Joined Feb 24, 2006
21,310
Originally posted by Cobra Jack@Mar 1 2006, 11:09 PM
I need a small device that will display three numbers based on voltage from three seperate inputs.

The voltage will be in the range of 0 to 5 volts DC
Each voltage input will need to be looked up in a reference table before displaying a result.

All three input voltages use the same reference look-up table .

Example of the table entries:
VOLTAGE -> Display
----------------------
0.25 -> 248
0.35 -> 230
0.45 -> 212
0.60 -> 194

The Display device should look something like:
http://www.allelectronics.com/cgi-bin/item...4_X_1_LCD_.html
A 24 X 1 LCD display

The operating voltage of the device will be 12 volts.
I'm a computer programmer / software engineer.. I took a few EE courses in college, but I really need either someone to point me in the right direction to get started on this, or I need to pay someone to to do this for me.

any advice is appreciated
[post=14523]Quoted post[/post]​
BASIC STAMP Webpage
These handy little modules should be just the ticket.
You can also GOOGLE "BASIC Stamp" and get over 8.3 Megahits

#### Cobra Jack

Joined Mar 1, 2006
2
Originally posted by Papabravo@Mar 1 2006, 10:16 PM
BASIC STAMP Webpage
These handy little modules should be just the ticket.
You can also GOOGLE "BASIC Stamp" and get over 8.3 Megahits
[post=14524]Quoted post[/post]​

wow, I didn't even know such a thing was available.

which module would you recommend for my needs? I'm trying to stay around $50 total for my buget. what else aside from the module would I need? #### Papabravo Joined Feb 24, 2006 21,310 Originally posted by Cobra Jack@Mar 1 2006, 11:26 PM wow, I didn't even know such a thing was available. which module would you recommend for my needs? I'm trying to stay around$50 total for my buget.

what else aside from the module would I need?
[post=14525]Quoted post[/post]​
Gee I dunno its been a while since I looked at their offerings. My guess is that you should go for the cheapest one you can find with enough pins to control the display.

I would follow some of those 8.3 Megahits on "BASIC Stamp" to see if there are application notes. There was also a newsprint magazine called "Nuts & Volts" that had lots of Basic Stamp projects in it. I bet they have a website.

You might also try Ciarcia's Circuit Cellar, another magazine with a website and an archive of useful articles.

I will have a look at the datasheet for the display to see if it suggests anything.