Are you powering this HC-SR04 through the bus? If yes, how much current
does it draw? This current has to flow back through the GND wire and may
lift the GND level on the far end on long, thin GND wires an substantial
amount, creating communication problems.
Kind regards
Jan
The HC-SR04
Well,
during seven years of usage/testing, I found the DS248x I2C-busmasters
to be the weakest available, especially with long wires..
Therefore I can only recommend to not use them outside a breadboard, a
DS2490/9490 (and many others) do perform much better;
Thats also the reason why I really
Am 02.04.2014 21:00, schrieb Jan Sennesael:
The UTP is approximately 45m long, cat 5e. I am using wire nr 1/2 for
gnd/+5V and 4/5 for 1wire/gnd (hobbyboard pinout). The sensor worked without
problems on the tree setup (with a diy usb master), nothing else has
changed.
The other pairs of
As suggested in an earlier thread, i changed my setup from a tree, to a bus.
To make it myself easier, i bought a 9bus board from pridopia (1 DS2482-100
and a DS2482-800)
I am not using the DS2482-100, but the first 5 channels from the DS2482-800.
All the sensors are connectes as a bus
Everything
