Unanswered Questions
662 questions with no upvoted or accepted answers
6
votes
0
answers
314
views
Raspberry as I2C Slave, how to slow down transfer rate?
I have had minor success using the PIGPIO library and interfacing the Pi as an I2C Slave (Using GPIO Pins 18 and 19 as SDA and SCL) with a Campbell CR1000X Datalogger
I am encountering a problem ...
- 11
6
votes
2
answers
416
views
Pi4J kills USB bus?
Hello fellow Pi enthusiasts :)
I am currently attempting to control a standard 16x2 character LCD display from the PI's GPIO pins from Java.
I downloaded Pi4J and wrote a small program to initialize ...
CommunityBot
- 1
3
votes
0
answers
2k
views
DCF77 time signal emulator by Raspberry Pi Zero WH
This is my first post on this forum.
Thanks for being welcomed into this community.
I am struggling with my second project with a RaspberryPi.
On Github I found a very interesting project of an ...
- 31
3
votes
0
answers
239
views
Is it possible to control servos in both directions on the RPi?
I have been working on controlling servos in one direction with PWM control via GPIO ports on my RPi 3. I've worked with motor controllers that use PWM before and it seems that I should be able to ...
3
votes
0
answers
676
views
LIRC mode2 shows no output
I am trying to receive configure an IR remote control for my raspberry and I configured LIRC on the Pi and it works all fine but I won't be able to capture some output with
mode2 -d /dev/lirc0
I ...
- 41
3
votes
0
answers
135
views
Unable to intercept the code of my remote control at 433 MHz with RaspberryPi
I'm trying to reproduce the code generated by my universal 4-channel radio control with RaspberryPI.
I cloned my remote with a universal remote like this:
I used the libraries included in 433Utils ...
- 131
3
votes
0
answers
154
views
Raspberry Pi button bug, what is happening?
I am new user of raspberry pi. I have two buttons, and some code to run, yet the led will not react to the buttons. It's probably a easy fix, but keep in mind, I am new to robotic and have only ...
- 1
3
votes
0
answers
1k
views
Getting button click type
I've been looking for a while to how to get the kind of click of a button on GPIO. Is it a single click? Double? Triple or more? Is it a long click? a very long click? a combination of them?
I haven'...
- 61.4k
3
votes
0
answers
227
views
Is it possible to virtually trigger a GPIO Input pin when nothing is actually connected to it?
I am trying to use incoming MIDI data on my Raspberry Pi 3's USB port to virtually trigger an input GPIO pin. The reason for this is as follows:
I'm using the MIDI out port on a Behringer X-32 audio ...
- 17.3k
3
votes
0
answers
1k
views
How to properly trigger multiple Raspberry Pi camera modules via GPIO?
I am working with three Raspberry Pi 3 B boards, which in turns have RPi camera modules V2 connected to each. I followed this very detailed post about triggering another Pi using GPIO pins and it ...
- 36
3
votes
0
answers
784
views
LED strip PWM on GPIO18 + mono audio output
On the RPi 3 I would like to control a WS2811 LED strip with PWM (GPIO18) by keeping the audio working.
It looks like for the RPi Zero (I'm unsure for RPI 3 though) left and right channels of the ...
- 1
3
votes
0
answers
1k
views
RPi Zero WiFi and USB OTG
I'm quite new to this kind of things, but I've jumped out with an idea of a device to give the ability to mount network shares as they where normal pendrives (like for TVs and other old devices).
I ...
- 131
3
votes
0
answers
2k
views
Which GPIO pins are used for I2S audio I/O
I am trying to set up the ADAU1781 as an audio codec for the Pi 3 B, communicating with the Pi via the GPIO pins. Which pins would I use for I2S audio input and output? I have been doing a lot of ...
- 187
3
votes
0
answers
617
views
DS18B20 temperature sensor not found in folder
I've bought the camjam edukit 2 for my pi which includes the DS18B20 temperature sensor. However, after going over the instructions 20 times, rebuilding it a same amount and searching online, I still ...
- 361
3
votes
0
answers
180
views
Raspberry Pi GPRS Connection: Unable to browse after ppp connection is established
I have a persistent problem browsing after connecting my GPRS/GSM Module to Raspberry Pi. I bought the GSM/GPRS Module on amazon here.
I have followed the instructions as given on this site
https://...
- 703