RunRyder RC
WATCH
 1 page 1113 views POST REPLY
HomeAircraftHelicopter
e-
Align
Other › Build a 3-Cell Voltage Monitor
12-12-2004 02:55 AM  13 years agoPost 1
jackheli

rrProfessor

Vancouver - Canada

My Posts: All  Forum  Topic

We all know we shouldn't discharge a Lipo Cell under 3V.

In order to monitor pack voltage I built this simple monitor using some spare parts I had at home.

The overall weight is 4grams, and power consumption is 2mA with no LEDs on.

The first LED (Green) lights up 10.5V, the second at 10V, the third (Red) at 9.5V and the last one at 9V.

You can build it over a universal printed circuit board or use my innovative solid state technique (Intel already asked for the patent...) that can be seen in my gallery.

Now the Disclaimer:

You are on your own. I take no responsibility of any sort regarding the usefulness, appropriateness or safety of the monitor.

It you are not an experienced electronics technician, call your buddy or stay away. A short circuit in the monitor could put your Lipo pack on fire!

It's easy to find an excuse to do wrong. Hard is not to find an excuse to do right.

PM  EMAIL  GALLERY  Attn:RR  Quote
12-12-2004 04:19 AM  13 years agoPost 2
elco

rrApprentice

Arcadia, CA

My Posts: All  Forum  Topic

Nice one. For those of you who want an audible alarm, here is a cheap one that weighs ony 3 grams, and puts out an 85 dB alarm when it's time to land. Costs about $3 and about 15 min to build. Works with 2s and 3s.

The link: http://www.rcgroups.com/forums/showthread.php?t=221018

Cheers,

elco

PM  EMAIL  Attn:RR  Quote
WATCH
 1 page 1113 views POST REPLY
HomeAircraftHelicopter
e-
Align
Other › Build a 3-Cell Voltage Monitor
 Print TOPIC  Make Suggestion 

 2  Topic Subscribe

Tuesday, July 17 - 8:59 am - Copyright © 2000-2018 RunRyder   EMAILEnable Cookies

Login Here
 New Subscriptions 
 Buddies Online