Thanks a lot Robert Le vendredi 5 février 2016 18:10:34 UTC+1, RobertCNelson a écrit : > > On Fri, Feb 5, 2016 at 10:51 AM, Przemek Klosowski > <[email protected] <javascript:>> wrote: > > On Fri, Feb 5, 2016 at 10:34 AM, Jean-Bernard Boichat > > <[email protected] <javascript:>> 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] <javascript:>, 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/ >
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