A serial communication protocol providing data communication and power transmission over a single line.

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PiTFT and One-Wire for temperature measuring not working together

as the title says it already: I'm trying to use a Capacitive PiTFT Touchscreen with a DS18B20 temperature sensor. I have tested both separately and they are working. But not together. My config.txt ...
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119 views

w1-gpio issue with Waveshare 5" LCD touchscreen and Pi 2

I've got huge trouble solving the following problem: I attached a Waveshare 5" LCD touchscreen to a Pi 2 Model B (components and setup listed below), prepared a new SDcard with Raspbian Jessie (not ...
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1answer
142 views

unable to install 1-wire temperature sensor

I am trying to figure out why I cannot get temperature sensors working connected to my RPi2. I have followed almost every possible guide on the internets without luck and the answers* provided here ...
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1answer
59 views

How to set up a leak sensor?

I'd like to set up a few water leak sensors in/under my house to avoid the kinds of plumbers' bills that I got recently! I had been hoping somebody had built such a thing with 1-wire or I2C ready to ...
2
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1answer
29 views

How to pulse DS28E04 with owserver?

I want to pulse a LED using parasitic power on a ow network using owserver. If you send the correct command the pin will pulse for between 250 ms and 1000 ms. The datasheet pulse access example ...
2
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1answer
726 views

Problems with OWFS over the w1 kernel module

I have a Series 2 Raspberry Pi. Running the 3.18 (wheezy) kernel. I got the w1 module (allows one-wire over gpio using bitbanging) to work, with both attached temperature probes showing up in ...
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1answer
118 views

pigpio and 1wire working together

I want to have two more-or-less independent programs running on my Raspberry Pi, one that monitors temperature and another that does protocol translation between two asynchronous serial devices. I ...
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1answer
106 views

IEEE80211n message transmission between 2 Raspberry Pi

I have got a wifi dongle that supports the ieee80211n protocol. This one is plugged into the pi that gets real time data from the device.The data it receives from the client needs to be sent (may be ...
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143 views

My Pi2 doesn't cognize One-Wire

I'm using Raspberry Pi 2 with Gentoo. I tried to use Digital Thermometer(DS18B20) with 1-wire so I prepared: login as: qwpo1030 Using keyboard-interactive authentication. Password: ...
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2answers
566 views

Is this possible to read internal CPU temp sensor directly from cpp code?

I am working on the kind of RPi platform to collect some external sensors data or control relays (using the remote tools like web or sms). Next problem I am tring to solve now is to get the direct ...
6
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1answer
1k views

Raspbian /sys/bus/w1/devices/ is empty when having multiple 1-wire DS18B20 temperature sensors

I have a RasPi model B rev. 2.0 and two DS18B20 1-wire temperature sensors and they are working individually fine. I know I should be able to connect multiple 1-wire sensors in parallel but I can't ...
2
votes
1answer
229 views

One wire temperature sensor DS18B20 sudden precission drop

I wired 10 DS18B20 to the raspberry pi, in the normal powered mode. I am using the Raspbian's built in w1-gpio and w1-therm. I am able to read all the 10 sensor values. Problem is, after (seemingly ...
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3answers
3k views

What is a failproof method for testing a GPIO pin?

So, basically, I've been trying to get my raspberry pi to get the room temperature from a DS18B20 1-wire temperature sensor. I've read only GPIO 4 is capable of this, and I think for some reason GPIO ...
0
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1answer
225 views

Sensor DS18B20 - i2C - weird response

I'm using the raspberry pi (model B) with the DS18B20 to read temperature. I connected 9 sensors through the 1wire (port 4), however I'm having a few sensors with a weird problem. The sensors ...
0
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3answers
807 views

Raspberry Pi to Arduino protocol

So I'm looking to use a few (2 for now, more later) Arduinos in combo with a single Raspberry Pi master. This is basically the setup I want: What sort of protocol would be best for this type of ...
2
votes
1answer
2k views

Dallas 1-wire temperature sensor not working

I've connected a temperature sensor (DS18B20) to my Pi and want to read it using 1-wire, but it doesn't work. I have loaded the w1-gpio and w1-therm modules, added them to /etc/modules and rebooted a ...
3
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1answer
648 views

How to change the Pin used for the 1-wire Bus

By default the header Pin Nr. 7 us used by the 1-wire kernel module. I would like to change it to a one of the 4 new GPIO Pins of an Rev 2 Pi.