On Fri, Feb 5, 2016 at 10:51 AM, Przemek Klosowski <[email protected]> wrote: > On Fri, Feb 5, 2016 at 10:34 AM, Jean-Bernard Boichat > <[email protected]> wrote: >> The BeagleBone community forum is not too active, sure. It's a pity for such >> a good board and concept. > > Are you participating in this discussion by sending email to > [email protected], or via some other way? I see it as an > email stream of a dozen or so messages a day. I'd call it pretty > active. > >> I found today one or two good articles like "Is BoneScript more trouble than >> its worth?" >> I have myself problem every 4-5 days with a Bonescript Web server >> distributing my sensor data, where I have to add soon a watchdog > > Do you require constant running, or do you sleep and run? If the > latter, you probably should respawn a fresh interpreter each time, do > the work and quit---otherwise you are at the mercy of memory leaks > that are hard to avoid in an interpreter. > > >> With IRC channel, your probably means I2C. Voltage and resistors, it's clear. > > No, IRC is the Internet Relay Chat software, a distributed chat > application that developers tend to use. When people log in into IRC, > they tend to watch it in real time, so potentially It provides more > immediate communication. This list is email-based so everyone has to > actively go and check the new emails. > >> Then, it's a question of hardware and conditions, like a DS18B20 on my BBB >> with 5V over a 5 meters cable ... and works as a charm. > > If you place an analog voltage greater than 1.8 Volts on the analog > input pin of the BBB, you will destroy that input. This is different > from DS18B20, which has a digital one-wire interface using I think > standard 3.3V digital signaling. Note that 5V is too much: you need to > drop the voltage to 3.3V even for digital signals.
and it looks like mis-read the data sheet... the dh11 actually is a simple bus, i first thought it was analog out.. It can be powered by 3.3v and there is kernel driver for this: https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/tree/drivers/iio/humidity/dht11.c?id=refs/tags/v4.5-rc2 and the dt bindings: https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/tree/Documentation/devicetree/bindings/iio/humidity/dht11.txt Regards, -- Robert Nelson https://rcn-ee.com/ -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
