#27922 connection of lisy-Gyroscope to a PropellerRobotControlBoard PRCB

nomad

Ref. #27922 connection of lisy-Gyroscope to a PropellerRobotControlBoard PRCB

hi,
i want connection the gyroscope to the pins of a PRCB,
but, before i make a burn-out of the sensor,
i have some question about it.
as attachment
(1) gyroLayout_2.jpg
··· is my·layout of the connection the sensor to prcb-board
··· 1) is this layout correct ??

(2) PRCB_IMAGE1.jpg
··· is a part of the official image of a PRCB-Board
··· interesting are the nos.(14) and (16)

for your info:
from the documentation of the LISY-sensor
****************************************************************
Theory of Operation
Internally the LISY300AL Gyroscope generates approximately 1.6V
on its analog output when it is still.
This value is affected very little by temperature so compensation
is not required. The output of the
LISY300AL is fed into a National Semiconductor ADC101S021 10-bit ADC.
This ADC has a high-speed (4 MHz) SPI interface
and the signal pins can operate at 3.3V and 5V.
Both the gyroscope and the ADC are internally regulated to 3.3V.
*****************************************************************
For Hints, Tips and Help i am verry appreciate,
excuse my bad english
Regards
nomad
Attachments:
- gyroLayout_2.jpg
- PRCB_IMAGE1.jpg

hover1

Since the signal pins of the LISY300 module can operate at 3.3V, you can connect directly to the propeller in area 16. To do this, the voltage translator for that group, (area 15), must be disabled. To do that, a jumper, or piece of wire should be used to short the two pads to the left of the translator in area 15, (see attached). This will disable the group of 8 pins in area 14 associated with that voltage translator, (just the "W" pins are disabled; the other two will carry power and ground). If you leave the VIN/5V jumper in the 5V position, in area 14, then your proposed connections should work.

The instructions are on page 6 of this document:

http://www.parallax.com/Portals/0/Downloads/docs/prod/prop/28230-PropellerRobotControlBrd-v1.0.pdf

Jim

nomad said...
Ref. #27922 connection of lisy-Gyroscope to a PropellerRobotControlBoard PRCB

hi,
i want connection the gyroscope to the pins of a PRCB,
but, before i make a burn-out of the sensor,
i have some question about it.
as attachment
(1) gyroLayout_2.jpg
··· is my·layout of the connection the sensor to prcb-board
··· 1) is this layout correct ??

(2) PRCB_IMAGE1.jpg
··· is a part of the official image of a PRCB-Board
··· interesting are the nos.(14) and (16)

for your info:
from the documentation of the LISY-sensor
****************************************************************
Theory of Operation
Internally the LISY300AL Gyroscope generates approximately 1.6V
on its analog output when it is still.
This value is affected very little by temperature so compensation
is not required. The output of the
LISY300AL is fed into a National Semiconductor ADC101S021 10-bit ADC.
This ADC has a high-speed (4 MHz) SPI interface
and the signal pins can operate at 3.3V and 5V.
Both the gyroscope and the ADC are internally regulated to 3.3V.
*****************************************************************
For Hints, Tips and Help i am verry appreciate,
excuse my bad english
Regards
nomad
Attachments:
- gyroLayout_2.jpg
- PRCB_IMAGE1.jpg

Post Edited (hover1) : 6/25/2010 1:17:55 PM GMT

nomad

hi hover1,
thank you for your answer.
today on saturday
1) make the platine and soldering
2) tests with PPDB propellerProfessionalDevelopmentBoard
3) if all ok
4) make the stuff with PRCB
5) testing
thank you

regards
nomad

nomad

hi hover1,

i have done my homework.
the platine (board) is OK
first tests with the PPDB are OK
calculations from ADC to Degrees OK

but I've made the following experiences

1) very unstable ADC values
·· the turns doesn't to reach the maximum of ADC (1024) or
·· the minimum ADC (1)

2)The chip does not tolerate Extension Cable
·· - I have the chip placed on a chicpsocket,
···· could it be that this is the error?

I would be very glad to notice, tips and hints

Tomorrow I will then make that whole stuff with the PRCB

regards
nomad