On Wed, Oct 28, 2009 at 4:30 AM, Angus Peart <
address@hidden> wrote:
> Hi All,
> Progress is underway now to make a few booz units. I have one small question
> though, what are the values of [R38, R39, R40] on the main board? I can't
> find any mention of what the Vout should be so I can not calculate these
> values myself, someone has to know what the values should be though?
> Regards,
> Angus
>
> 2009/10/15 antoine drouin <
address@hidden>
>>
>> Hello wolrd
>>
>> On Thu, Oct 15, 2009 at 6:47 AM, Angus Peart <
address@hidden> wrote:
>> > Hi All,
>> > I have a few questions about the booz hardware and with the lack of
>> > documentation, I thought would ask here.
>> > 1. Is the HW going through any revisions in the near future, it would be
>> > a
>> > shame to get some PCB's made then have a revision come out the next
>> > month.
>>
>> The IMU stays for the moment
>> There is a new main board on the way ( paparazzi4/trunk/hw/lisa) using
>> a STM32 instead of the LPC2148
>>
>> > 2. Has anyone considered replacing the 2 and 1 axis magnetometers with a
>> > small HMC5843? The problem I see is it is I2C not SPI, which isn't on
>> > the
>> > IMU board, but it is on the GPS board.
>> > 3. On the IMU YZ board, what is the small magnetometer part number?
>>
>> the PNI MS2100 ( the mag that is on the IMU) is a 3 axis chip with two
>> integrated sensing elements
>> the part on the YZ board is the Z sensor needed to get full 3 axis and
>> is called sensXY
>> (
http://www.pnicorp.com/products/all/sen-xy)
>> > 4. The AMI601 on the GPS board, when is/isn't that needed. I cannot find
>> > much info about the AMI601 or even where to purchase it. I see it is a 3
>> > axis magnetometer so this may answer question 2 as well. It is also a 3
>> > axis
>> > accelerometer (if my information is right), is the accelerometer being
>> > used
>> > from the AMI601? If it is only being used for a magnetometer then I
>> > think
>> > replacing it with the HMC5843 is a good idea as it is I2C like the
>> > AMI601,
>> > which is already brought to the GPS board.
>>
>> THe AMI601 on the GPS board is obsolete ( not manufactured anymore,
>> replaced by AMI602, which I don't have available)
>> The latest version of the GPS board has this part removed and the up
>> to date method is to use the PNI MS2100 on the IMU
>>
>> > 5. If the AMI601 (or other 3-axis magnetometer) is on the GPS board,
>> > does
>> > that mean the magnetometer on the main IMU and YZ board do not need to
>> > be
>> > placed/used?
>>
>> you can use either one, but the AMI601 is obsolete
>>
>> > 6. The "power board" looks like a simple power switching board with an
>> > external switch to activate it. Is this correct? When should it be used
>> > and
>> > why?
>>
>> I like to leave my battery connected and just press a switch when I
>> want to fly.
>> I find it a pain to have to turn the quad upside down
>>
>>
>> > 7. The absolute pressure sensor "MPX6115" doesn't seem to exist. I take
>> > it
>> > that it should be the MPXH6115, absolute sensor, the ported version?
>>
>> correct
>>
>> > 8. I am proficient with eagle and can work with multiple layers, is
>> > there
>> > any TODO items that I could do with the schematics/boards before I get
>> > them
>> > made?
>>
>> the current version is believed to be bug free. If you want to help me
>> work on lisa, you're welcome
>>
>> > 9. Is there anything else I should know before I get the PCB's made up?
>>
>> i've heard ppzuav has some boards in production
>>
>> Regards
>>
>> Poine
>>
>>
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