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Community Bench Meter
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xani:
im thinking, maybe "dual display" ? Some nice LED 7-segment for "main" display and 4x20 (or graphic) LCD for other things like menus and other measures.
So for example u can have Vrms on nice big LEDs + other measures like Vp-p, Min-Max, or freq on LCD. Or even dual-measure, for example I on LED and V on LCD + power and resistance calculated from it :D
GeekGirl:

--- Quote from: xani on January 27, 2010, 01:09:26 am ---im thinking, maybe "dual display" ? Some nice LED 7-segment for "main" display and 4x20 (or graphic) LCD for other things like menus and other measures.
So for example u can have Vrms on nice big LEDs + other measures like Vp-p, Min-Max, or freq on LCD. Or even dual-measure, for example I on LED and V on LCD + power and resistance calculated from it :D

--- End quote ---

I am liking this idea, but I do not want to use a character LCD, I want to use a graphic LCD, with one like the one posted by Curtis, you could have both in 2 lines on the LCD :):)

EEVblog:
Cool idea.

I think it's gotta be different somehow, not just a bench multimeter.
I'm not sure what or how, just offer something compelling, either in form factor and/or combination of features.
Be careful not to slide down the oscilloscope functionality slippery slope...

Forget mains use, any meter worth building can be battery powered.

This is more of a hack idea, but what about a project to design a new engine/user interface for the Fluke 233?
It's got a re-flashable micro in the head (don't know about the base), and you could probably replace the LCD with a graphic one. Not exactly low cost though.

Dave.
Mastro Gippo:
Hehe Kat, I had the same idea sometime ago, but I wasn't going to wait for the heart to stop to call for help, I was thinking about a bunch of electrodes that trigger the power shutdown when they detect a voltage difference between them, caused by an electrocution.

I think we can easily make a wireless display like the one Dave reviewed, but it would be hard to design the case. The wireless interface could be used to interface to a PC too. I think we can just start to design the PCB around a cheap and widely available multimeter case, maybe from Dealextreme.

As Kat says, graphic LCD/OLED is a must. A micro SD slot is tempting too.

I think hacking a Fluke is a bit blaspheme  ;D , but maybe if we can find a good multimeter with a nice analog front-end to harvest for cheap, it would save a ton of time.

I always wanted to build one of these:
http://mondo-technology.com/super.html
we can get a lot inspiration from that project!  ;)
GeekGirl:

--- Quote from: EEVblog on January 27, 2010, 06:14:40 am ---Cool idea.

I think it's gotta be different somehow, not just a bench multimeter.
I'm not sure what or how, just offer something compelling, either in form factor and/or combination of features.
Be careful not to slide down the oscilloscope functionality slippery slope...


Dave.

--- End quote ---

Hi Dave,

I definitely do not want to make this a scope lol (Rigol and others have nice cheap units ;))

I am thinking one idea to set it apart is to make the current input separate, so we can compute Power :) Also so we can display current and voltage at the sametime, compute power factor and VA for AC, Power for DC.

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