Raspberry Pi Forums

John Public

path = /media/pi/foo-bar-foo-bar/PiMedia browseable = yes read only = no public = yes only guest = yes force user = pi force group = pi After struggling to get Samba working for most situations I used above configuration. I am not an expert on Samba. Above just works for me. Note that user is "...

John Public

Just to recap: I used an inexpensive pair of 433MHZ sender & receiver (http://bit.ly/2sCDikI). I connected both to a single Raspberry (RPi3) and used two GPIO pins. One gpio would send and the other would receive. It worked reasonably well - not too much noise. However, when I plugged the same s...

John Public

I faulty power source broke down with sparks an all on when connecting it to Rpi3 miniusb connector. The Raspberry looks ok with no visible damage after careful inspection. I connected a good power source but I could not get the RPi3 to boot up: no lights, nothing. Since it looks ok I suspect the us...

John Public

Hi, I broke the same part on an Orange Pi. I managed to gently push the part back to hold the ribbon in place. It sort of stuck there. You could try to see if you can manouver the broken part to hold the ribbon again. Failing than that how about hot glue?

John Public

How did you come up with the receiver (3.3 kOhm + 1.8kOhm) to get 5v down to 3.3V. I tried an online calculator http://www.gtsparkplugs.com/Dropping_Resistor_Calc.html Just trying to learn something useful. Actually I got the Receiver and Transmitter work on the same Raspberry using just the 3.3V (a...

John Public

I have an RF transmitter and a receiver https://goo.gl/ymf1ca. Their operating voltage is 3.5V-12V and transmit power: 10mW. I uppply them 3.3V and got them to work on Raspberry GPIO. I'd like to test them using 5V. Since RPi 3 GPIO uses 3.3V how do I step down voltage? I don't know if down conversi...

John Public

I got it to work. I just reinstalled Debian 8 (a bare bones version) on a new SD card and followed the youtube example.
I just wonder what was wrong with the NOOBS SD? Some driver must have clobbered the SPI interface.

John Public

It's advertised as using SPI. Did you connect it as shown on the github page I linked to? Your config.txt is correctly configured for SPI, so that's fine. Check if SPI devices are created with 'ls /dev/spi*' pi@raspi05:~$ ls /dev/spi* /dev/spidev0.0 /dev/spidev0.1 I checked the wires once again and...

John Public

I just followed the tutorial as best I could and ran the Read.py at the end. Well, I'm not going to watch that video, but the info refers to https://github.com/mxgxw/MFRC522-python and that uses SPI, not I2C... Do you have a link to the board you're using? Most of the ones I have seen can use UART,...

John Public

We need more information: * is your reader (shield?) set to use I2C? * is your device connected correctly? I don't believe there are any settings on the reader. I just followed the tutorial. I checked the wire connection a couple of times and AFAIK they are ok. * What is the output of 'i2cdetect -y...

John Public

I've followed this youtube tutorial to set up RC522 reader: https://www.youtube.com/watch?v=tZPWXnMdIRU If set i2c interface "on" from raspi-config. My /etc/config.txt has these settings ... # Uncomment some or all of these to enable the optional hardware interfaces dtparam=i2c_arm=on #dtp...

John Public

I have a bunch Micro USB Type B Female Sockets (for example https://goo.gl/76xIVB ). Soldering wires is difficult due to small size. Are the any connectors or that I could just push there and not weld wires. I know of breakout boards but they are a bit overkill and tight space in my enclosure preven...

John Public

I have Rp3 and the GPIO versio of Razberry. I'd like to receive input from a Z-wave device. Usually when I atatch a USB or GPIO device it's simply a question of opening /dev/ttyS0 or /dev/ttyUSB0 or whatever and receiving data (numbers, text etc) which makes my task very easy. The API reference for ...

John Public

Where could I find C source code to record audio and save it to file. I am using RPi3. The simpler (but C source) the better. Later I would need to know how to "view" or draw a graph on the sound. Examples that I've found are way too complicated. I am not looking for a huge sound recording...

John Public

Is UV4L available for commercial projects?

John Public

I also had the same problem with a Raspberry Zero. Monitor kept flickering. I had had previously no problem so I knew the PSU was ok. The only thing I had changed was teh USB cable from a short cable to a foot longer. Changed it back to the shorter one and everything was ok again. The problem USD ca...

John Public

I'd like to use an RPi 3 (or Zero) as a network datalogger or filter of sorts. I would set it like like this Now I have this: Wall/Internet ----router----ComputerA ie cat5/6 cable going from wall to a laptop computer (ComputerA) What I would like is have RPi in between. Wall/Internet -----router----...

John Public

I have a simple raspberry zero program (written by me) that creates an array of all filenames, dates and size in a directory. In Raspberry 3 it works fine but if I use it on Zero the program freezes if I have thousands of files. After a week of testing and testing and trying to find what freezes the...

John Public

I need a rudimentary messaging system between two programs. Just short text message.I am using Raspberry Zero with X11 Debian. I Windows I have an easy clibboard copy & paste. Is there an equivalent for Debian and X11? Both progras are written in C. After searching on the net there does not seem...

John Public

Where can I find raspiyuv source code?
What I'd like to do is capture raw camera data - preferably plain uncompressed rgb. I am looking for the simplest c source with least overhead - I don't need the jpg or bmp conversion etc.

John Public

Forget it. I installed everything again and all went ok. Probably some install was unfinished.

John Public

I usuallu install a Rasbien Jessie lite on a brand new SD card and added X11. I don't want the other software that is unnecessary for me. Now when it boot up I get a graphical Debian 8 windows (as usual) but it asks for a username and a password. No matter what i give ("pi" and "raspb...

John Public

Whilst trying to find a solution I wrote this: int main (void) { wiringPiSetup () ; pinMode (21, OUTPUT) ; // 21=GPIO5 digitalWrite (21, LOW) ; return 0; } Then another program: int main (void) { wiringPiSetup () ; iz=digitalRead (21) ; printf("iz is %d\n",iz); return 0; } The first progra...

John Public

Actually I was trying to use GPIO5 for input. But it seems to be on HIGH by default. If i set it to low it "bumps" back to high. I want to know the logic behind the GPIO pins that are "free for use". For example if I connect a PIR to GPIO5 and then read is the PIR signal on GPIO5...

John Public

I am trying to use GPIO5 for input as well as output. #include <stdio.h> #include <stdlib.h> #include <wiringPi.h> int main (void) { int iz; wiringPiSetup () ; pinMode (21, OUTPUT) ; // 21=GPIO5 digitalWrite (21, LOW) ; // GPIO5 should be now low, let find out ... delay(500); pinMode (21, INPUT) ; /...

Search found 90 matches

Re: Why is Samba no longer working for me?

Re: step-up regulator, buck converter 5V->3.3V

Power RPi3 from GPIO pins?

Re: For want of a nail...

Re: step-up regulator, buck converter 5V->3.3V

step-up regulator, buck converter 5V->3.3V

Re: RFID-RC522 problem

Re: RFID-RC522 problem

Re: RFID-RC522 problem

Re: RFID-RC522 problem

RFID-RC522 problem

Wiring connector or receptable

Z-wave (Razberry) input, receiving data

c source code to record audio and display graph

Re: RTMP stream to remote server with low latency?

Re: Flickering HDTV screen after startx on Debian

RPi as a network datalogger/filter

Raspberry Zero program freezes under heavy load

Share clipboard between two programs

Raspiyuv source code?

Re: Login won't take pi and raspberry - SSH works fine

Login won't take pi and raspberry - SSH works fine

Re: GPIO not working as expected (wiringPi)

Re: GPIO not working as expected (wiringPi)

GPIO not working as expected (wiringPi)