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RE: [Paparazzi-devel] minimal input voltage for the tiny 2.1

From: Roman Krashanitsa
Subject: RE: [Paparazzi-devel] minimal input voltage for the tiny 2.1
Date: Tue, 19 Feb 2008 16:55:52 -0700

I can confirm that we have flown with 2-cell lipo and our low_battery setting was at 6.2 V. Everything worked fine even when battery voltage went down to 6.2V at which point the airplane was already on the ground.

From: address@hidden [mailto:address@hidden On Behalf Of address@hidden
Sent: Tuesday, February 19, 2008 4:38 PM
To: address@hidden
Subject: Re: [Paparazzi-devel] minimal input voltage for the tiny 2.1

I have tested the supply down to 5.5V which I thought was the rated minimum.  Below 5.5V the 5V line goes to Vin - 0.5V and I verified this under load as well, down to 3.5V where the MCU crashes.  I hope you are incorrect Michel, because 6.6V will not work for 2 cell lipo which can easily go below 6V under load when depleted.

-- "Michel GORRAZ" <address@hidden> wrote:
In order to maintain the 5v power supply for the servos, the minimal input voltage for the Tiny v2 is 6.6v : so you can fly with a 2 cells lipo...


2008/2/19, Prof. Dr.-Ing. Heinrich Warmers <address@hidden>:
what is the minimal input voltage for the tiny 2.1?
Can i fly with two lipo cells?


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