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by andies
Mon Nov 21, 2016 4:29 pm
Forum: Troubleshooting
Topic: Noise with 433MHz receiver [Completely solved]
Replies: 65
Views: 21843

Re: Noise with 433MHz receiver

I have nothing ("special offer, $2 incl shipping"...). I was told I might have to pay tax, though :lol: With anything else you risk damaging the receiver I just read something about op am. This is too complicated for me. If I am damaging my receiver I will loose about 2$. That is worth the effort. I...
by andies
Mon Nov 21, 2016 10:15 am
Forum: Troubleshooting
Topic: Noise with 433MHz receiver [Completely solved]
Replies: 65
Views: 21843

Re: Noise with 433MHz receiver

I think it is highly unlikely that any receiver marketed for the Arduino or Raspberry Pi needs a voltage boost. Well, the receiver was not especially produced for the Raspberry, maybe it is faulty (but how come that three of them have the wrong voltage: China?!). I have seen other people struggling...
by andies
Mon Nov 21, 2016 5:57 am
Forum: Troubleshooting
Topic: Noise with 433MHz receiver [Completely solved]
Replies: 65
Views: 21843

Re: Noise with 433MHz receiver

davidcoton wrote:You mean the receiver output pin?
Yes.
davidcoton wrote: It sounds like you need a voltage amplifier
Can you point me to a website where I can find more information? Or tell me some keywords to look that up? Last time I was playing with transistors was thirty years ago...
by andies
Sun Nov 20, 2016 5:19 pm
Forum: Troubleshooting
Topic: Noise with 433MHz receiver [Completely solved]
Replies: 65
Views: 21843

Re: Noise with 433MHz receiver

I have found something. I have measured the voltage of the 433-receiver. If no signal is present the receiver (measured to the ground) has stable 1,2V, approx. The needle is not moving. If I push the button on my garage opener the voltage drops to about 0V (I cannot measure that exactly because the ...
by andies
Sun Nov 20, 2016 3:41 pm
Forum: Troubleshooting
Topic: Noise with 433MHz receiver [Completely solved]
Replies: 65
Views: 21843

Re: Noise with 433MHz receiver

I have now put a complete new jessie light on my RPi3 with nothing on it except wiringPi: No result. Then I added PiScope (with all the dependencies) and connected the GPIOs with two different receivers. I do not get any result. I have two 433-utils (garage opener and shutters mover) - nothing happe...
by andies
Tue Nov 15, 2016 7:21 am
Forum: Troubleshooting
Topic: Noise with 433MHz receiver [Completely solved]
Replies: 65
Views: 21843

Re: Noise with 433MHz receiver

Thank you for the test. Result:

Code: Select all

Skipped non-user gpios: 0 1 28 29 30 31 
Tested user gpios: 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 
Failed user gpios: None
by andies
Mon Nov 14, 2016 5:23 am
Forum: Troubleshooting
Topic: Noise with 433MHz receiver [Completely solved]
Replies: 65
Views: 21843

Re: Noise with 433MHz receiver

I will use the other GPIOs to check (I am using GPIO 27 currently). If one GPIO is destroyed, are the other still working?

This is the third receiver I am using.
by andies
Sun Nov 13, 2016 10:17 pm
Forum: Troubleshooting
Topic: Noise with 433MHz receiver [Completely solved]
Replies: 65
Views: 21843

Re: Noise with 433MHz receiver

IMG_7226.jpg
IMG_7226.jpg (49.43 KiB) Viewed 9198 times
next foto
by andies
Sun Nov 13, 2016 10:14 pm
Forum: Troubleshooting
Topic: Noise with 433MHz receiver [Completely solved]
Replies: 65
Views: 21843

Re: Noise with 433MHz receiver

GPIO 2 is connected to pin 3. Pin 27 is connected to GPIO 0. Sorry for the misunderstanding. I connected Data to Physical pin 13 / BCM pin 27 / Wiring Pi pin 2. Do you have an aerial attached to the receiver? No, but the distance is <1cm. Are you powering the receiver from 3V3 or 5V? 5 V. If 5V are...
by andies
Sun Nov 13, 2016 9:25 pm
Forum: Troubleshooting
Topic: Noise with 433MHz receiver [Completely solved]
Replies: 65
Views: 21843

Re: Noise with 433MHz receiver

OK, the new receiver arrived ("433Mhz Superheterodyne Wireless Receiver RXB8 3.3V-5.5V Steady for Arduino/AVR"). I also set up a competely new RPi3, just to be sure that nothing is disturbing. Unfortunately, I have no reaction if I ./_433D -r2 with GPIO 2 (PIN 27 according to https://www.raspberrypi...
by andies
Thu Nov 03, 2016 9:59 pm
Forum: Camera board
Topic: Motion - MMAL camera
Replies: 472
Views: 412914

Re: Motion - MMAL camera

Sorry, my conf-file. And I have installed that before, so cabel is ok, camera is ok, /media/usb is available etc. And sudo raspistill -o image.jpg Does work. ############################################################ # Daemon ############################################################ # Start in ...
by andies
Thu Nov 03, 2016 9:57 pm
Forum: Camera board
Topic: Motion - MMAL camera
Replies: 472
Views: 412914

Re: Motion - MMAL camera

I have a problem with motion on jessy on a Raspi3. First I tried uv4l together with motion but got a load-average of about 6 (because I was using the full resolution of the camera). Then, I installed twice the new raspi-image together with a complete new system (including update, upgrade and rpi-upd...
by andies
Sun Oct 30, 2016 7:29 am
Forum: Troubleshooting
Topic: Noise with 433MHz receiver [Completely solved]
Replies: 65
Views: 21843

Re: Noise with 433MHz receiver

I think I have fooled myself: My RPi has rpimonitor installed. This uses port 8888 that is also occupied by PiGPIO. Both seem to interact and this stoped my RPi. I have now deinstalled rpimonitor. Everything is fine besides I only get a constant high on GPIO 27, no noise nor any signal. Maybe it was...
by andies
Sat Oct 29, 2016 8:32 pm
Forum: Troubleshooting
Topic: Noise with 433MHz receiver [Completely solved]
Replies: 65
Views: 21843

Re: Noise with 433MHz receiver

I just crashed my Pi. Uhmpfg. It will take some time ;-(
by andies
Sat Oct 29, 2016 8:01 pm
Forum: Troubleshooting
Topic: Noise with 433MHz receiver [Completely solved]
Replies: 65
Views: 21843

Re: Noise with 433MHz receiver

Thanks for your patience. Here is the raw signal without any resistors or capacitors.
rawsignal.png
rawsignal.png (56.87 KiB) Viewed 9687 times
by andies
Sat Oct 29, 2016 7:47 pm
Forum: Troubleshooting
Topic: Noise with 433MHz receiver [Completely solved]
Replies: 65
Views: 21843

Re: Noise with 433MHz receiver

(Maybe the receiver is broken?)
by andies
Sat Oct 29, 2016 7:44 pm
Forum: Troubleshooting
Topic: Noise with 433MHz receiver [Completely solved]
Replies: 65
Views: 21843

Re: Noise with 433MHz receiver

The picture above was without the resistor (entire length is 1000ms, as in the default piscope setup). The picture below (my second post) was with resistor.
by andies
Sat Oct 29, 2016 7:32 pm
Forum: Troubleshooting
Topic: Noise with 433MHz receiver [Completely solved]
Replies: 65
Views: 21843

Re: Noise with 433MHz receiver

Yes, I tried that - to no avail. My problem seems to be that there is a constant HIGH on data (or too much noise) and in particular nothing if I press the button of my sender.
by andies
Sat Oct 29, 2016 6:41 pm
Forum: Troubleshooting
Topic: Noise with 433MHz receiver [Completely solved]
Replies: 65
Views: 21843

Re: Noise with 433MHz receiver

OK, I managed to kill much of the noise using a 1kOhm (between Data and GRD). But now I have a constant high
HighSignal.png
HighSignal.png (11.89 KiB) Viewed 9808 times
and putting my sender about 1cm close to the receiver gives nothing.
by andies
Sat Oct 29, 2016 5:52 pm
Forum: Troubleshooting
Topic: Noise with 433MHz receiver [Completely solved]
Replies: 65
Views: 21843

Noise with 433MHz receiver [Completely solved]

I am trying to recode a 433MHz signal (two: garage door opener and roller shutter/opener). I bought a simple chinese Model: MX-FS-03V and installed RFSniffer as well as piscope (using pigpiod). I cannot decode any signal because there is too much noise. RFSniffer does not output anything. Therefore,...
by andies
Mon Oct 24, 2016 6:19 am
Forum: Camera board
Topic: Motion - MMAL camera
Replies: 472
Views: 412914

Re: Motion - MMAL camera

I am using a 2.5A because I had so many problems with the power supply.
by andies
Sun Oct 23, 2016 5:32 pm
Forum: Camera board
Topic: Motion - MMAL camera
Replies: 472
Views: 412914

Re: Motion - MMAL camera

OK, sorry: It seemed to be a forgotten "reboot". Shame on me...
by andies
Sun Oct 23, 2016 4:43 pm
Forum: Camera board
Topic: Motion - MMAL camera
Replies: 472
Views: 412914

Re: Motion - MMAL camera

I was able to install motion on wheezy as well as jessy but had problems with my USB. Therefore, I had to start from scratch - and now it does not work anymore. Unfortunately, my error messages are not very helpful: [0] [NTC] [ALL] [Oct 23 17:57:27] motion_startup: Using log type (ALL) log level (WR...
by andies
Sun Sep 11, 2016 8:26 pm
Forum: Advanced users
Topic: Add External Antenna to Raspberry Pi 3
Replies: 9
Views: 17512

Re: Add External Antenna to Raspberry Pi 3

I have to use a wire of approx. 0.5m length between the antenna and the RPi. Will this 1/2m destroy the gain from the antenna? (Otherwise RPi as well as antenna would be in a metal cave, approx 0.3mm thick - I do not expect any signals inside, the sender is about 60m away).
by andies
Sun Mar 20, 2016 7:07 am
Forum: Camera board
Topic: Motion - MMAL camera
Replies: 472
Views: 412914

Re: Motion - MMAL camera

The easiest way is probably to run a cronjob and use simple wget-commands to stop and start motion using localhost-web-access like http://localhost:8086/0/detection/pause or http://localhost:8086/0/detection/start . I am using precisely wget -O - http://localhost:8086/0/detection/pause > /dev/null 2...

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