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Re: [Paparazzi-devel] Booz EEPROM

From: Jayson MacKiddie
Subject: Re: [Paparazzi-devel] Booz EEPROM
Date: Sat, 5 Dec 2009 22:17:43 -0500

Why not store the calibration parameters in LPC2148 EEPROM? I imagine there's a good reason. I'm just not up to date yet.
Also, why has VREF2 on the Motor Controller I2C_0 Lever Translator / Isolator (U$11) not been wired to 3.3V in Booz? Our YGE18i ESCs are TTL, and the LPC2148 is 5V tollerant, so 3.3V would work but I intend to include the translator so that the board remains compatible with other ESCs and avoids unnecessary stress on the MCU. Any reason why VREF2 was not wired directly to 3.3V or 5V? Much like what was done with LT_I2C1 on the main board.

On Sat, Dec 5, 2009 at 8:34 PM, antoine drouin <address@hidden> wrote:
the eeprom on the IMU is intended to store calibration parameters, the
eeprom on the mainboard is useless

On Sun, Dec 6, 2009 at 2:12 AM, Jayson MacKiddie
<address@hidden> wrote:
> Hello, I am new to Paparazzi. We have begun to develope a dual MCU version
> of Booz. a sort of Booz meets Classix offspring if you will. Regarding
> hardware, could anyone clear up exactly what the two EEPROMS are used for in
> the Booz design? There is one on the main board and another on the IMU
> board. What is the full extent of their use and why two EEPROMS and on
> different boards? We've read a few things here and there but nothing more,
> and would like to be certain we havn't missed anything. We'd like to avoid
> running through the entire code to clear up such a simply matter.
> Great work everyone!
> Regards,
> Jay
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> Paparazzi-devel mailing list
> address@hidden

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