Linked Questions

6 votes
1 answer
15k views

/dev/lirc0 does not exist

I want to use an IR diod receiver. I installed lirc but when I write to terminal this code: mode2 -d /dev/lirc0 it says mode2: could not get file information for /dev/lirc0 mode2: defauld_init(): ...
Muhammed Ali HAŞILOĞLU's user avatar
4 votes
3 answers
12k views

DS18B20 temperature sensor not registered - debugging?

Like other posters I have connected the temperature sensor (from ModMyPi Hacker Kit) a variety of ways and can not get my Raspberry Pi 2 to recognise it. I have unsuccessfully followed posts to ...
sarin's user avatar
  • 403
2 votes
2 answers
13k views

"Inappropriate ioctl for device" error since upgrading Rasbian & firmware

I was happily controlling Shiftbrite LEDs using SPI and Python based on this code Today I upgraded my Pi using sudo apt-get update && sudo apt-get dist-upgrade sudo rpi-update Now my script ...
TrevorJ's user avatar
  • 183
0 votes
1 answer
7k views

LIRC / Raspberry PI 2 , No input

I want to use LIRC with my new RPI 2. To do that, I followed this tutorial. Basically it is telling me to do the following: Add this to your /etc/modules file: lirc_dev lirc_rpi gpio_in_pin=25 ...
harveyslash's user avatar
2 votes
2 answers
4k views

DS18B20 Sensor not detecting

I've got a DS18B20 Temperature Probe connected to my Pi but it can't seem to detect it. I run: sudo modprobe w1-gpio sudo modprobe w1-therm and then go to cd /sys/bus/w1/devices and do ls and it ...
Kersakov's user avatar
  • 425
2 votes
1 answer
4k views

PiTFT doesnot work after rpi-update

I updated the firmware with command : sudo REPO_URI=https://github.com/notro/rpi-firmware rpi-update This install the kernel 3.18.5+ After reboot, the PiTFT is no more showing console as before (...
mpromonet's user avatar
  • 1,124
3 votes
1 answer
2k views

DS18b20 temperature sensor not found [duplicate]

Trying to install DS18b20 temperature sensor but it looks like the RPi cannot find it. From console: sudo modprobe w1-gpio sudo modprobe w1-therm cd /sys/bus/w1/devices/ ls But there is nothing ...
Nicole Svensson's user avatar
1 vote
2 answers
2k views

Unable to see Temp sensors at /sys/bus/w1/devices which was working until SD card got corrupted

I have several DS18B20 sensors wired to my Raspberry Pi and wrote a python script to read them all. I've had the script running for months without a problem. Last week I performed an update and an ...
Diane's user avatar
  • 11
0 votes
2 answers
2k views

I2C not working as expected

I'm running a Pi B+ rev 1.2 and recently acquired 2 I2C modules: DS-RGBW.S LED lighting Microstack accelerometer: When connecting the LED module, address 70 appears to be occupied as planned. I ...
Mast's user avatar
  • 139
-4 votes
1 answer
2k views

Firmware modules not available in Raspbian os

I am working on a project. I have Raspbian installed on my Raspberry Pi. When I do sudo lsmod I have no output. I cannot use lirc and i2c module as this require firmware modules. I have to submit the ...
user3563091's user avatar
1 vote
2 answers
599 views

My Raspberry Pi doesn't detect i2c BMP085 slave

My Raspy 2 B+ doesn't detect the BMP085 sensor via i2c bus. The wiring was checked again and again, it's true : Vcc -> 3.3V GND -> GND SDA -> SDA0 pin SCL -> SCL0 pin Results of the "i2cdetect" ...
Sylvain Duclos's user avatar
1 vote
0 answers
223 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: qwpo1030@rpi2-...
qwpo1030's user avatar