DIY Drain-O-Liszt© like DC PowaMeeta®™

Not quite ready for ebike prime time as it's only good to 30Vin, but instructional nonetheless & being micro based should be hackable.

In addition to the usual electrical measurements including peak reading & elapsed time, it also has an optional temp function, LCD backlight & most notably a bargraph feature, something that ES member swordman was pining for.
The PCB & pre-programmed ATMega are available for about £9 apiece if anyone's keen.

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http://www.dg7xo.de/selbstbau/nt-power-modul.html

I'd be interested. Do you have any documentation in English ? Also what is the lowest cost way to program the ATMega as I will have an irresistable urge to tweak the firmware to my needs . Where do you get LCD module ?

curious said:

Where do you get LCD module ?

Click to expand...

http://www.mpja.com/products.asp?dept=361
http://www.mouser.com/home.aspx
http://www.allelectronics.com/cgi-bin/category/365/LCDs_(Liquid_Crystal_Displays).html

That's cool. I bet it wouldn't be too hard to make it work at a higher voltage, but you'd probably need to change some of the code. I like the bar graph function.