Submitted by il diavolo on Tue, 10/09/2018 - 20:13
Simple question (I hope). If I mount two UltraBorgs on a single Pi (I understand about changing addresses), can I run one of them powered by the Pi (jumper fitted) and the other from a separate battery (actually from a BatBorg), jumper not fitted?
piborg
Wed, 10/10/2018 - 20:20
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Powering two UltraBorgs differently
Yes, it is absolutely fine to use the 5V link jumper with one UltraBorg and the external 5V connection with a second one at the same time :)
I would recommend having the UltraBorg using the 5V link connected directly to the Pi if you are daisy-chaining the two boards.
il diavolo
Wed, 10/10/2018 - 22:16
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Thanks.
Thanks.
il diavolo
Sun, 11/25/2018 - 11:17
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ubTuningGui + 2 UltraBorgs
I now have 2 UltraBorgs fitted to Diddy, one driving the ultrasonic sensors and the other driving 2 servos. The Ic2 address of the first one is Hex 36 Dec 54 (left as set by you originally).
I have altered the address of the second board to Hex 37 Dec 55 as per your instructions and both boards are now working together correctly.
However, I need to adjust the tuning of the servos on the second board but find that the ubTuningGui program can't find the second board. I have amended the ubTuningGui.py script to read...
UB = UltraBorg.UltraBorg()
UB.i2cAddress = 55
UB.Init()
Running it from a terminal window it reports:
Loading UltraBorg on bus 1, address 36
Missing UltraBorg at 36
UltraBorg was not found
Obviously I have disconnected the first UltraBorg when I try this to avoid it using the board it finds at 36.
Is there something else I need to alter to get ubTuningGui to find the second board?
Thanks
piborg
Sun, 11/25/2018 - 11:46
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That does not make much sense...
That should be the only thing you need to change.
The first printed line (
Loading UltraBorg on bus 1, address 36) is showing what thei2cAddressvalue is set to whenInitwas called, so this should not be possible.Is there any chance of a typo on the line setting the address?
il diavolo
Sun, 11/25/2018 - 22:09
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No Typo
Strange. No typo as far as I can tell.
I am wondering if there is a "compiled" ubTuningGui.pyc that is being used rather than the .py standard version, I have had a similar problem before. Next time I fire up Diddy I'll have a root around.
il diavolo
Mon, 11/26/2018 - 20:10
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Duh!
I've booked with Specsavers!
Now working.