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by nick8967
Sun Jul 19, 2020 8:24 am
Forum: Advanced users
Topic: How to measure the time duration that CPU accelerates the tensorflow model
Replies: 0
Views: 141

How to measure the time duration that CPU accelerates the tensorflow model

I have built a CNN using tensorflow, and ran it on RPi 4B 4GB. I want to measure the part of the code, more specifically the time duration that tensorflow accelerates my code on the validation stage. How can I achieve this?
by nick8967
Sat Jul 18, 2020 9:26 am
Forum: Advanced users
Topic: 8GB RAM speed up Convolutional Neural Network?
Replies: 3
Views: 207

8GB RAM speed up Convolutional Neural Network?

I have built a CNN on tensorflow and I run it on Rpi 4B 4GB. My question is if the validation on 4GB Rpi takes x minutes, can a 8GB RAM Rpi reduce that in y minutes (y<<x) ? Does anyone has an idea? experience on that?
by nick8967
Wed Jul 15, 2020 2:31 pm
Forum: Troubleshooting
Topic: plot/statistics of the processor
Replies: 13
Views: 448

Re: plot/statistics of the processor

How can I get information about the GPU usage of the Raspberry Pi, in addition to the jahboater's script? Or, with a new command,..
by nick8967
Thu Jul 09, 2020 8:10 am
Forum: Advanced users
Topic: Encryption/Decryption on wireless modules
Replies: 2
Views: 189

Re: Encryption/Decryption on wireless modules

I am thinking of make something with wireless modules + encryption/decryption to see how they interact, just for curiosity.... Any ideas?
by nick8967
Thu Jul 09, 2020 8:08 am
Forum: Troubleshooting
Topic: Screen does not open with the latest raspbian
Replies: 2
Views: 136

Re: Screen does not open with the latest raspbian

I am using the same monitor that I used to work with the RaspberryPi and it worked fine. Suddenly one day stopped displaying anything on the monitor. I flashed the latest raspbian as I wrote above, I started the Rpi => nothing on screen, black, null, nothing. Today I flashed the 2020-05-27-raspios-b...
by nick8967
Wed Jul 08, 2020 8:14 pm
Forum: Troubleshooting
Topic: Screen does not open with the latest raspbian
Replies: 2
Views: 136

Screen does not open with the latest raspbian

Hello I have a Rpi 4B 4GB. I have flashed 2020-05-27-raspios-buster-full-armhf.zip (Raspberry Pi OS (32-bit) with desktop and recommended software) on a 128gb microsd. I supply the Rpi, nothing on screen....Any ideas?
by nick8967
Wed Jul 08, 2020 8:09 pm
Forum: Troubleshooting
Topic: plot/statistics of the processor
Replies: 13
Views: 448

Re: plot/statistics of the processor

Do they export to log files? csv? txt? something?
by nick8967
Wed Jul 08, 2020 6:24 pm
Forum: Troubleshooting
Topic: plot/statistics of the processor
Replies: 13
Views: 448

Re: plot/statistics of the processor

Does the above code run, or I am doing something wrong?
by nick8967
Wed Jul 08, 2020 12:31 pm
Forum: Advanced users
Topic: Encryption/Decryption on wireless modules
Replies: 2
Views: 189

Encryption/Decryption on wireless modules

Any idea where (in which area/project) could wireless modules such as Xbee, LoRa, etc use encryption/decryption??
by nick8967
Sun Jul 05, 2020 8:31 am
Forum: Advanced users
Topic: Optimize machine learning code for RaspberryPi
Replies: 1
Views: 121

Re: Optimize machine learning code for RaspberryPi

Or any ideas how to make the code able to run on Raspberry Pi 3 B+ and Raspberry Pi 4B (4GB)
by nick8967
Sat Jul 04, 2020 5:40 pm
Forum: Advanced users
Topic: Optimize machine learning code for RaspberryPi
Replies: 1
Views: 121

Optimize machine learning code for RaspberryPi

Do you know any reliable tutorial for optimizing Machine Learning code for running in Raspberry?? I have written ML code in tensorflow, and runs perfectly in Ubuntu. But when I try it to Raspberry Pi I have memory problems, and "explodes". Even with memory allocation from microSD, I don't see using ...
by nick8967
Mon Jun 29, 2020 6:45 pm
Forum: Advanced users
Topic: Raspberry Pi 4B 8GB vs Raspberry Pi 4B 4GB
Replies: 4
Views: 489

Re: Raspberry Pi 4B 8GB vs Raspberry Pi 4B 4GB

So, it is not the same!
:geek:
by nick8967
Mon Jun 29, 2020 2:37 pm
Forum: Advanced users
Topic: Raspberry Pi 4B 8GB vs Raspberry Pi 4B 4GB
Replies: 4
Views: 489

Raspberry Pi 4B 8GB vs Raspberry Pi 4B 4GB

Hello, any acceleration statistics between Raspberry Pi 4B 8GB vs Raspberry Pi 4B 4GB as far as tensorflow is concerned? I am interested in image processing and CNN... Thanks
by nick8967
Fri Jun 26, 2020 8:49 pm
Forum: Troubleshooting
Topic: 4,7 Volt or 5,8 Volt for Raspberry supply
Replies: 9
Views: 442

Re: 4,7 Volt or 5,8 Volt for Raspberry supply

Ok, the story is the following. I want to use Raspberry in my car, so I bought this item here: https://www.ebay.com/itm/New-12V-24V-Dual-USB-5V-2-1A-Car-Charger-Adapter-With-ON-OFF-Switch-Power-Cable/283412710927?hash=item41fcb6c60f:g:jNMAAOSw8VNchg1P , (not from this seller), but the output voltage...
by nick8967
Fri Jun 26, 2020 7:41 pm
Forum: Troubleshooting
Topic: 4,7 Volt or 5,8 Volt for Raspberry supply
Replies: 9
Views: 442

4,7 Volt or 5,8 Volt for Raspberry supply

Hello, I have built a circuit to supply RaspberryPi. As it now I can only choose between 4,7 or 5,8 Volt. And nothing between, It is complicated to explain why.. Anyway which of the 2 Voltages do you suggest to use?
by nick8967
Sat May 23, 2020 2:39 pm
Forum: Troubleshooting
Topic: reading from 2 UART at the same time
Replies: 10
Views: 404

Re: reading from 2 UART at the same time

I am searching something like this, kind: "Read (UART 1) and Read (UART 2) simultaneously"

viewtopic.php?t=226058
by nick8967
Sat May 23, 2020 12:52 pm
Forum: Troubleshooting
Topic: reading from 2 UART at the same time
Replies: 10
Views: 404

Re: reading from 2 UART at the same time

As I described before, I use 2 current sensors, each one connected to a UART. I want to sum the current values and get the total... But without timeshift between the UARTs, because it has no rationale to add 2 current values in different times..it is useless...

How I can achieve that?
by nick8967
Sat May 23, 2020 12:09 pm
Forum: Troubleshooting
Topic: reading from 2 UART at the same time
Replies: 10
Views: 404

Re: reading from 2 UART at the same time

Ok, so can I synchronize the 2 current sensors over the 2 UART, and get a sum?
by nick8967
Sat May 23, 2020 11:13 am
Forum: Troubleshooting
Topic: reading from 2 UART at the same time
Replies: 10
Views: 404

Re: reading from 2 UART at the same time

I will ask it otherwise. For example: This is the pinout of Raspberry Pi 4B: https://learn.pi-supply.com/make/raspberry-pi-4-pinout/ I read from UART1 and UART2. The values I read are floats (representing current). I sum the values, so the time for example 12:01:12:34513 when I read both from UART1 ...
by nick8967
Fri May 22, 2020 5:31 pm
Forum: Troubleshooting
Topic: reading from 2 UART at the same time
Replies: 10
Views: 404

reading from 2 UART at the same time

Hello,

I am reading values from 2 UARTs. i want to read at the same time (without time shift between the 2 UART) the values they send in order to add them. How do I achieve that?
by nick8967
Sun Apr 26, 2020 8:09 pm
Forum: Troubleshooting
Topic: FPGA <-> RaspberryPi4 connection
Replies: 0
Views: 129

FPGA <-> RaspberryPi4 connection

Hello, I have found this link https://www.geeky-gadgets.com/raspberry-pi-virtex-5-fpga-hat-01-08-2019/ It is a good idea to send heavy load on Virtex. So I thought this: I have a Virtex 5, can I connect it with RaspberryPi 4? How? SPI/UART/I2C? If yes, can I send specific parts of the code, for exam...
by nick8967
Wed Apr 22, 2020 11:32 am
Forum: Troubleshooting
Topic: Sensors for building a weather station
Replies: 0
Views: 80

Sensors for building a weather station

Hello, I want to build a weather station. Apart from the common sensors that a weather station uses, I am thinking of putting more. For instance can I use illuminance sensors? Can I use smoke sensors? The weather station targets on smart agriculture... Any suggestion? Any other suggestion for what s...
by nick8967
Tue Mar 31, 2020 8:28 pm
Forum: Troubleshooting
Topic: plot/statistics of the processor
Replies: 13
Views: 448

Re: plot/statistics of the processor

(CPU load/core, RAM load, frequency, Power consumption) / time
by nick8967
Tue Mar 31, 2020 6:48 pm
Forum: Troubleshooting
Topic: plot/statistics of the processor
Replies: 13
Views: 448

plot/statistics of the processor

Hello, How can I get a plot of the performance of the processor of raspberry pi over the time? I want to export the data to a .csv file so that I can process the data...
by nick8967
Tue Mar 31, 2020 2:14 pm
Forum: Troubleshooting
Topic: How to check the RAM
Replies: 29
Views: 2938

Re: How to check the RAM

jahboater wrote:
Tue Mar 31, 2020 1:49 am
From google, this link shows how to create a swap file or a swap partition:
https://www.fosslinux.com/1064/how-to-c ... x-mint.htm
This is great!! Thanks...

In case I want to delete the swap and change it to bigger size, how do I do this?

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