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Re: [Paparazzi-devel] YAPA2 help needed

From: limaiem imed
Subject: Re: [Paparazzi-devel] YAPA2 help needed
Date: Thu, 9 Aug 2012 18:38:52 +0200


He is not powering the LPC directly with the lipo. He is using the PTH08080WAH.

he may need to measure the current drawn by the board ... 

I get a lot of issues with yapa2 boards ... strange behavior too ... sometimes the board led took 1 to 2 minutes before staring to blink...  



On Thu, Aug 9, 2012 at 6:23 PM, Felix Ruess <address@hidden> wrote:
You can't put your battery voltage directly on this pin!!!
You need a voltage divider to scale it down to an acceptable level, since the LPC can't handle these high input voltages...

On Thu, Aug 9, 2012 at 5:01 PM, Chris <address@hidden> wrote:
Well i am very disappointed.
I managed to burn a second YAPA2 and i am sure that i did nothing wrong.
It exhibits exactly the same symptoms as the first one but with more symptoms this time
I2C and modem stopped communicating also.
I don't know what is going on anymore.
The 30 to 12v and 5V power supplies are brand new (not the same as in the first incident),
onboard regulators also work fine.
The AP works for some minutes and then it starts to fall apart slowly.
My setup in brief:
LIPO 6S (for now) ->|--> 12V PSU -> YAPA2 Vin
                                |-> 5v psu -> YAPA2 servo pins so other servos can get 5v
                                | -> CURRENT SENSOR ---|--> ESC -> MOTOR
    |--> ADC_1 for voltage and ADC_2 for current

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