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by nick8967
Tue Nov 26, 2019 3:51 pm
Forum: Android
Topic: Android application showing real time data
Replies: 4
Views: 171

Re: Android application showing real time data

What about Kafka? Can be run on RaspberryPi?
by nick8967
Tue Nov 26, 2019 2:50 pm
Forum: Android
Topic: Android application showing real time data
Replies: 4
Views: 171

Android application showing real time data

So, I am trying to build an application in android that I need to read data from a Raspberry wirelessly. I am searching on google but I got confused. Can I read data from the wifi of the Raspberry? Should I run a more specific application on RaspberryPi? Should I go better to bluetooth? I don't know...
by nick8967
Sat Nov 16, 2019 11:35 am
Forum: General discussion
Topic: Connecting Raspberry Pi with laptop through ethernet
Replies: 1
Views: 80

Connecting Raspberry Pi with laptop through ethernet

Hello,

I want to connect Raspberry Pi 4B to my laptop through ethernet cable, to test some code I have written. How do I do this?

Thank you
by nick8967
Wed Nov 06, 2019 10:27 pm
Forum: General discussion
Topic: GPIOs working in parallel
Replies: 5
Views: 264

GPIOs working in parallel

Hello,
Can I have different GPIOs working in parallel.
For example can I have
GPIO 17 -----> working as input
GIPO 27 -----> working as input
GPIO 22 -----> working as output
at the same code? and nearly at the same time?
by nick8967
Wed Nov 06, 2019 9:55 pm
Forum: General discussion
Topic: Controlling a liquid pump motor
Replies: 9
Views: 418

Re: Controlling a liquid pump motor

I have found this:
https://learn.adafruit.com/adafruit-keg-bot?view=all
but I cannot figure out what interface uses with Raspberry...
UART? SPI? I2C?
by nick8967
Wed Nov 06, 2019 7:15 pm
Forum: General discussion
Topic: Sending real time video from one room to the other
Replies: 6
Views: 528

Re: Sending real time video from one room to the other

Is there a way to calculate the bandwidth usage If I manage to send video? I mean the (bandwidth I use)/(total bandwidth capacity)
And I need to build a function in python that every time I consume bandwidth to capture this. I am googling it, but I would be grateful if you could help me.

Thanks...
by nick8967
Wed Nov 06, 2019 7:14 pm
Forum: Advanced users
Topic: Connect 2 Raspberrys through WIFI
Replies: 8
Views: 566

Re: Connect 2 Raspberrys through WIFI

Yes, text. Python. Another question: Can I measure the bandwidth usage on WIFI when I send data? I mean the (bandwidth I use)/(total bandwidth capacity) And I need to build a function in python that every time I consume bandwidth to capture this. I am googling it, but I would be grateful if you coul...
by nick8967
Wed Nov 06, 2019 5:41 pm
Forum: Advanced users
Topic: Connect 2 Raspberrys through WIFI
Replies: 8
Views: 566

Re: Connect 2 Raspberrys through WIFI

Do I use sockets programming? How do I do that? Thank you...
by nick8967
Wed Nov 06, 2019 5:38 pm
Forum: Advanced users
Topic: Connect 2 Raspberrys through WIFI
Replies: 8
Views: 566

Connect 2 Raspberrys through WIFI

I want to connect 2 Raspberrys with WFI so that I can directly transfer data between them (and not with the help of a router). Is this feasible?
by nick8967
Wed Nov 06, 2019 3:42 pm
Forum: General discussion
Topic: Sending real time video from one room to the other
Replies: 6
Views: 528

Re: Sending real time video from one room to the other

From a google search a powerline interfaces with ethernet, so I have to send all the information through that. Because I want to implement bidirection communication, meaning, not only get information (images) from the Raspberry + the camera, but also sending commands from my laptop to the raspberry+...
by nick8967
Wed Nov 06, 2019 3:36 pm
Forum: General discussion
Topic: Controlling a liquid pump motor
Replies: 9
Views: 418

Controlling a liquid pump motor

Hello, I want to use the following Peristaltic Liquid Pump with Silicone Tubing: Motor voltage: 12VDC Motor current: 200-300mA Flow rate: up to 100 mL/min My question is, is there any solution on how to gather feedback of what amount of water does it emits? Ok, the obvious solution is if I open it f...
by nick8967
Wed Nov 06, 2019 2:44 pm
Forum: General discussion
Topic: Sending real time video from one room to the other
Replies: 6
Views: 528

Sending real time video from one room to the other

Hello, I want to send live streaming video from Raspberry Pi 3 B+ and the camera from one floor to the other. The problem is that the onboard WiFi that Raspberry has does not work properly.. Maybe the distance is too large... Maybe because they are not on the same floor... I don't know. Any solution...
by nick8967
Sat Oct 26, 2019 10:16 pm
Forum: Troubleshooting
Topic: What is the fastest speed I can get on Rpi 4B and Rpi 3B+
Replies: 1
Views: 247

What is the fastest speed I can get on Rpi 4B and Rpi 3B+

Hello,

Do you know what is the highest bitrate I can get (with and without "tricks") using UART on Raspberry Pi 4B and Raspberry Pi 3 B+?

Thank you...
by nick8967
Sat Oct 26, 2019 8:18 pm
Forum: Troubleshooting
Topic: Problem installing OpenCV4
Replies: 5
Views: 517

Re: Problem installing OpenCV4

Ok, I run the commands you posted. What should I do now? pi@raspberrypi:~/Desktop/NN $ cvVersion="masrer" pi@raspberrypi:~/Desktop/NN $ echo $cvVersion masrer pi@raspberrypi:~/Desktop/NN $ cwd=$(pwd) pi@raspberrypi:~/Desktop/NN $ echo $cwd /home/pi/Desktop/NN pi@raspberrypi:~/Desktop/NN $ echo "$cwd...
by nick8967
Sat Oct 26, 2019 12:41 pm
Forum: Troubleshooting
Topic: Problem installing OpenCV4
Replies: 5
Views: 517

Re: Problem installing OpenCV4

Ok, I have ran the Step 0 again, nothing changed with the command I mentioned...

Thank you...
by nick8967
Sat Oct 26, 2019 12:24 pm
Forum: Troubleshooting
Topic: Problem installing OpenCV4
Replies: 5
Views: 517

Problem installing OpenCV4

I follow this tutorial: https://www.learnopencv.com/install-opencv-4-on-raspberry-pi/ When I give this command: source "$cwd"/OpenCV-"$cvVersion"-py3/bin/activate I get this response: bash: /OpenCV--py3/bin/activate: No such file or directory I google it, but I don't find a reliable solution..
by nick8967
Wed Oct 23, 2019 9:20 pm
Forum: Troubleshooting
Topic: Problem with raspbian buster on RaspberryPi 4B
Replies: 21
Views: 1210

Re: Problem with raspbian buster on RaspberryPi 4B

davidcoton wrote:
Wed Oct 23, 2019 8:52 pm
nick8967 wrote:
Wed Oct 23, 2019 8:35 pm
I loaded raspbian buster on Rapsberry Pi 3 B+, the WIFI does not work! It stucks. I use the on-board and 2 external modules with external antennas, nothing...
Have you set the country code (raspi-config or directly in wpa-supplicant)?
What is this??
by nick8967
Wed Oct 23, 2019 8:35 pm
Forum: Troubleshooting
Topic: Problem with raspbian buster on RaspberryPi 4B
Replies: 21
Views: 1210

Re: Problem with raspbian buster on RaspberryPi 4B

I loaded raspbian buster on Rapsberry Pi 3 B+, the WIFI does not work! It stucks. I use the on-board and 2 external modules with external antennas, nothing...
by nick8967
Wed Oct 23, 2019 12:51 pm
Forum: Troubleshooting
Topic: Problem with raspbian buster on RaspberryPi 4B
Replies: 21
Views: 1210

Re: Problem with raspbian buster on RaspberryPi 4B

I'm waiting for your post to see what you will collect....
I have spent many days trying to make the raspbian buster work on Rpi 4B.
by nick8967
Wed Oct 23, 2019 7:48 am
Forum: Troubleshooting
Topic: Problem with raspbian buster on RaspberryPi 4B
Replies: 21
Views: 1210

Re: Problem with raspbian buster on RaspberryPi 4B

I use Raspberry Pi 4B, 4GB...
by nick8967
Tue Oct 22, 2019 11:08 pm
Forum: Troubleshooting
Topic: Problem with raspbian buster on RaspberryPi 4B
Replies: 21
Views: 1210

Re: Problem with raspbian buster on RaspberryPi 4B

The same here...

Is this a bug??
by nick8967
Mon Oct 21, 2019 6:29 pm
Forum: Troubleshooting
Topic: Problem with raspbian buster on RaspberryPi 4B
Replies: 21
Views: 1210

Re: Problem with raspbian buster on RaspberryPi 4B

Every command I run to download a library (to different IPs) result in error...
by nick8967
Mon Oct 21, 2019 5:03 pm
Forum: Troubleshooting
Topic: Problem with raspbian buster on RaspberryPi 4B
Replies: 21
Views: 1210

Problem with raspbian buster on RaspberryPi 4B

Hello, Do you face any problems with the latest Raspbian buster running on RaspberryPi 4B when using WiFi? I have used 2 different wifi modules (3 including the on-board module) and all I get is problem (read timeout more specific) trying to connect to an IP for downloading libraries... Thank you...
by nick8967
Thu Oct 17, 2019 2:14 pm
Forum: Beginners
Topic: what does cd $cwd do?
Replies: 5
Views: 297

what does cd $cwd do?

What this command does?

Code: Select all

cd $cwd

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