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by Andyroo
Tue Nov 20, 2018 2:27 pm
Forum: HATs and other add-ons
Topic: Issue with Waveshare 3.5" HDMI display + Pygame
Replies: 3
Views: 2395

Re: Issue with Waveshare 3.5" HDMI display + Pygame

My screen did not come for my birthday :cry: but Santa may bring it :D (i.e. I cannot test this). But in all seriousness, looking at this stupid long link to Google you may want to try screen = pygame.display.set_mode((w, h), FULLSCREEN, x) where 'x' is the supported bit depth. Other than that I sli...
by Andyroo
Tue Nov 20, 2018 2:02 pm
Forum: Off topic discussion
Topic: Why Avoid BASIC on RPi?
Replies: 2312
Views: 106868

Re: Why Avoid BASIC on RPi?

I'll chip in with: From my point of IT department work it was 3 partly historic (as I am) reasons that killed it for us: Lack of data structures Arrays of one simple variable type just do not cut it so file handling and internal data storage was a pain. You used Cobol for complex data structures Lac...
by Andyroo
Tue Nov 20, 2018 1:42 pm
Forum: Android
Topic: Smartphone with Ethernet cable
Replies: 3
Views: 2922

Re: Smartphone with Ethernet cable

Going by the kit contents you just plug it together: PiTalk with Antenna 3.2"/4"/5" LCD Screen Raspberry Pi 3 Model B+ 8GB microSD card preloaded with PiTalk Software As a guess you would need to add a power supply and your bespoke software but I've never built one (hate mobiles after years of 24x7 ...
by Andyroo
Tue Nov 20, 2018 1:22 pm
Forum: Graphics, sound and multimedia
Topic: 3 x 16x32 RGB LED using Raspberry Pi
Replies: 3
Views: 1523

Re: 3 x 16x32 RGB LED using Raspberry Pi

That is some serious engineering :o
by Andyroo
Tue Nov 20, 2018 1:19 pm
Forum: Advanced users
Topic: Cloud platform for streaming my rpi's CSVs?
Replies: 7
Views: 946

Re: Cloud platform for streaming my rpi's CSVs?

Found one (well almost) :lol: :roll: IBM Node-red can handle CSVs and can create a dashboard - no idea if you can get it hosted or how stable the CSV handling is as you can get another CSV import https://flows.nodered.org/node/node-red-contrib-bigcsv that also handles multiple lines per record. The ...
by Andyroo
Tue Nov 20, 2018 11:23 am
Forum: General discussion
Topic: Is it OK to have USB sticks plugged for a long rime?
Replies: 20
Views: 1850

Re: Is it OK to have USB sticks plugged for a long rime?

... Also as you are running a server it would be a good idea to have backups, secondary systems that are kept in sync with the primary. This is always a good failsafe. It is usually recommended to have at least two layers of redundancy (primary system, secondary system, and tertiary system). And ke...
by Andyroo
Tue Nov 20, 2018 11:20 am
Forum: Other projects
Topic: ClusterPi
Replies: 1
Views: 1376

Re: ClusterPi

Its a nice idea that gets floated here now and then but currently you would end up with a very expensive VNC / ssh terminal :cry: You cannot share the PC RAM or video card with the Pi so you would have to look at connecting via ethernet and running the cluster software / load balancer over a mixed e...
by Andyroo
Tue Nov 20, 2018 11:09 am
Forum: Graphics, sound and multimedia
Topic: 3 x 16x32 RGB LED using Raspberry Pi
Replies: 3
Views: 1523

Re: 3 x 16x32 RGB LED using Raspberry Pi

Very neat - I could do with one of those in my sons bedroom.

We say he cannot find things smaller than an elephant - this way he would have no excuse for not coming down for tea or answering the doorbell :lol:

You need to do a build post (hint)
by Andyroo
Tue Nov 20, 2018 11:05 am
Forum: General discussion
Topic: Is it OK to have USB sticks plugged for a long rime?
Replies: 20
Views: 1850

Re: Is it OK to have USB sticks plugged for a long rime?

On the Raspberry the error recovery and rebuild has to be performed by the processor using the USB subsystem for data transfer, this will cause a heavy load when needed and may not always be successful. Tell me about it - spent weeks trying to patch data from a NAS together after software RAID fail...
by Andyroo
Tue Nov 20, 2018 10:36 am
Forum: Advanced users
Topic: Cloud platform for streaming my rpi's CSVs?
Replies: 7
Views: 946

Re: Cloud platform for streaming my rpi's CSVs?

I think you will find that CSVs as an 'interface standard' died many years ago when programmers discovered more complex ways took longer and earned them more money ;) Personally, I liked them for numeric data but hated them for text - working in the food industry pizza was a killer for files as user...
by Andyroo
Tue Nov 20, 2018 10:24 am
Forum: Python
Topic: tkinter not using system fonts
Replies: 1
Views: 526

Re: tkinter not using system fonts

An idea of language (I guess python but maybe wrong), version of the language / tkinter and Pi detail will help please and can we see the set up part of your code? Do you have anything like: text.configure(font=("Times New Roman", 12, "bold")) to set the font as the default? Have you seen https://tk...
by Andyroo
Tue Nov 20, 2018 10:17 am
Forum: Troubleshooting
Topic: LCD 3.2
Replies: 1
Views: 75

Re: LCD 3.2

Can you please provide links to:

1) The LCD screen you are using?
2) The instructions you followed for the install?
3) What Pi and OS version you are using?

There are so many variations out there, the chance on some-one helping correctly are limited with out this asa a starting point :lol:
by Andyroo
Tue Nov 20, 2018 10:13 am
Forum: Android
Topic: Smartphone with Ethernet cable
Replies: 3
Views: 2922

Re: Smartphone with Ethernet cable

The only Pi based 'phones I have seen are variations on https://shop.sb-components.co.uk/produc ... spberry-pi

It may be a starting point for you.
by Andyroo
Tue Nov 20, 2018 10:07 am
Forum: General discussion
Topic: Is it OK to have USB sticks plugged for a long rime?
Replies: 20
Views: 1850

Re: Is it OK to have USB sticks plugged for a long rime?

The reasons for the hard disk going to sleep are to save power and to reduce wear with the drives being mechanical. USB sticks and drives do not suffer from these problems but have their own issues, the main one being they wear out and normally fail catastrophically. A quick search on this forum wil...
by Andyroo
Tue Nov 20, 2018 1:32 am
Forum: Networking and servers
Topic: MQTT bridge between local and cloud
Replies: 2
Views: 1104

Re: MQTT bridge between local and cloud

Any reason admin will not open the port for you?

If that’s a 100% stumbling block, have a look at Cayenne on the Pi and at https://mydevices.com. You link the two together, define devices and control from the web.
by Andyroo
Mon Nov 19, 2018 8:43 pm
Forum: Teaching and learning resources
Topic: Best Sensors to Buy for a Classroom?
Replies: 2
Views: 3847

Re: Best Sensors to Buy for a Classroom?

I would avoid touch screens as they do not add a lot over using a mouse in my eyes.

I would go for light, sound and movement and get them to create an alarm system and see if they can sneak past it :lol:
by Andyroo
Mon Nov 19, 2018 8:29 pm
Forum: General discussion
Topic: Node.js
Replies: 3
Views: 369

Re: Node.js

I’ve seen a few folk using https://www.bluej.org/raspberrypi/index.html as it has a GPIO module. Cannot comment myself on how it stacks up for experienced devs but it may be a starting point for you. I do know you can develop on a PC with a Windows share on the Pi and use remote debug but not sure i...
by Andyroo
Mon Nov 19, 2018 8:19 pm
Forum: Advanced users
Topic: Cloud platform for streaming my rpi's CSVs?
Replies: 7
Views: 946

Re: Cloud platform for streaming my rpi's CSVs?

What creates these CSVs (I am assuming these are comma separated variables)? What type of display do you want? You could go for a dashboard type display using something like https://io.adafruit.com or one of the other free dashboard suppliers. You could use Python and Flask to create your own web pa...
by Andyroo
Mon Nov 19, 2018 8:15 pm
Forum: Other
Topic: Chromium OS for Raspberry Pi 3B / 3B+, now updated to r72
Replies: 6
Views: 26880

Re: Chromium OS for Raspberry Pi 3B / 3B+

Bit baffled :oops:

I thought Fyde was a Chinese fork of Flint?

I know Flint got bought out by Neverware back at the start of this year so who now looks after Flint?
by Andyroo
Mon Nov 19, 2018 8:10 pm
Forum: General discussion
Topic: Getting Started with the kids.
Replies: 2
Views: 380

Re: Getting Started with the kids.

A lot depends how technical you are :lol: Do you have a USB keyboard and mouse free, if not I would go for a complete starter kit with an official power supply. As for Scratch: 1) Look for a code club or Jam in your area 2) Try here https://scratch.mit.edu for some examples 3) Look at the back issue...
by Andyroo
Mon Nov 19, 2018 5:31 pm
Forum: Troubleshooting
Topic: No boot from 500 GB HDD without power
Replies: 11
Views: 1469

Re: No boot from 500 GB HDD without power

As I said above, the chipset is not the issue. I have different brand adapters with the same chipset that behave differently. Comprehensive testing of a large variety of devices is time consuming and labor intensive, and time is money, which is why companies like Apple and Microsoft charge for for ...
by Andyroo
Mon Nov 19, 2018 4:36 pm
Forum: General discussion
Topic: ADS1115: problem with some data
Replies: 4
Views: 233

Re: ADS1115: problem with some data

I discovered that my IR LEDs had too low resistance and the high current destroyed the resistors. I know there is a problem but I was wondering if the high current could be the cause of the readings that grow of the ADS converter Possibly if they heated up - long time since I've wielded a soldering...
by Andyroo
Mon Nov 19, 2018 1:05 am
Forum: General discussion
Topic: IoT Platform (Pi + LTE + Hat)
Replies: 1
Views: 116

Re: IoT Platform (Pi + LTE + Hat)

You can stack SOME hats as it depends on power needs, connections needed and physical layout. One good expansion is https://shop.pimoroni.com/products/phat-stack but I am unsure if this would work in your case. One of the cards I note only uses the serial port (the tindie AIS cars) but nothing is do...
by Andyroo
Mon Nov 19, 2018 12:59 am
Forum: Troubleshooting
Topic: cron job not executing
Replies: 9
Views: 873

Re: cron job not executing

Possible security issues as Cron jobs do not run as the same user as console jobs.

Possible path issues as cron jobs do not have the same path as user tasks.

Possible error in the Cron job not calling the script.
by Andyroo
Mon Nov 19, 2018 12:56 am
Forum: General discussion
Topic: Solved: Pull the plug
Replies: 17
Views: 1329

Re: Pull the plug

No matter what the media is there is a chance that the disk will corrupt as Linux can cache data before its flushed to disk. There are many ways to use a button to both shutdown and power on the Pi but they require the machine to be operational. Best bet is to use the shutdown command after programs...

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