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by Forris
Thu Apr 30, 2020 6:57 am
Forum: Beginners
Topic: Recommend me a Pi kit for a beginner?
Replies: 6
Views: 520

Re: Recommend me a Pi kit for a beginner?

Yes Elegoo kits are being sold at the same vendor however most of them were for Elegoo/Arduino. I am also afraid about the component compatibility, mainly about the voltages. You're right to be concerned about voltages. These kits are fine for experimenting with but many are designed to be used wit...
by Forris
Sat Apr 18, 2020 8:53 am
Forum: Scratch
Topic: PWM support for scratch 3?
Replies: 2
Views: 1108

Re: PWM support for scratch 3?

There's a version of Scratchgpio for Scratch 3 here: http://simplesi.net/basic-guide-to-using-s3gpio/
by Forris
Sat Apr 18, 2020 8:30 am
Forum: General discussion
Topic: Push button 330 ohm resistor
Replies: 5
Views: 478

Re: Push button 330 ohm resistor

Hi.

Not quite sure what the resistor is for? A photo or diagram would help.

If you're simply trying to get a button to do something, this might help...https://gpiozero.readthedocs.io/en/stab ... tml#button
by Forris
Sat Apr 11, 2020 7:49 am
Forum: Other projects
Topic: Multi-PI Project using GUIZero
Replies: 1
Views: 320

Re: Multi-PI Project using GUIZero

Sorry if I've misread, but where is the guizero code that you are using? All of the code that you have listed uses the standard tKinter library. Also, how are you connecting to the remote cameras? If you're planning to use RealVNC, there is a box you need to check to use the experimental video drive...
by Forris
Sat Apr 11, 2020 7:32 am
Forum: General discussion
Topic: Raspberry Pi 3 with light sensor and LED!
Replies: 4
Views: 426

Re: Raspberry Pi 3 with light sensor and LED!

Have a look at this:

https://gpiozero.readthedocs.io/en/stab ... ght-sensor

It uses the gpiozero library, which is much simpler to understand for newcomers to Python, and the diagram is clearer.
by Forris
Thu Apr 09, 2020 6:07 pm
Forum: General discussion
Topic: Controlling 4 motors with 2 L298N Dual H Bridge controller boards
Replies: 6
Views: 484

Re: Controlling 4 motors with 2 L298N Dual H Bridge controller boards

If you have a look at the pinout here: https://www.raspberrypi.org/documentation/usage/gpio/ As long as you're not using the i2c or SPI interfaces, any of the pins labelled GPIO would be fine. Also, if you're just starting out with this, it's worth having a look at the gpiozero documentation and wor...
by Forris
Sun Mar 08, 2020 3:56 pm
Forum: Troubleshooting
Topic: Trouble controling gpio pins with python
Replies: 3
Views: 418

Re: Trouble controling gpio pins with python

Might I suggest that, as you are new to using the gpios, that you start with using the gpiozero library. It's much simpler to understand and designed specifically for those new to Physical Computing and Python.

https://gpiozero.readthedocs.io/en/stable/index.html
by Forris
Sun Mar 08, 2020 3:54 pm
Forum: Beginners
Topic: Learning physical computing/python/and GUI for kids
Replies: 9
Views: 847

Re: Learning physical computing/python/and GUI for kids

Have you looked at the resources available at the official site ? https://projects.raspberrypi.org/en/projects If you have, can you elaborate why these are not interesting or suitable we can maybe lead you to others. Thank you. I have not noticed it before. When I choose "raspberry Pi" and "Python"...
by Forris
Sun Mar 08, 2020 3:48 pm
Forum: Beginners
Topic: Learning physical computing/python/and GUI for kids
Replies: 9
Views: 847

Re: Learning physical computing/python/and GUI for kids

There is a beginner lesson on the pi website https://projects.raspberrypi.org/en/projects/getting-started-with-guis There isn't much more out there than that. Just keep challenging them to add new features to their code. There becomes a point for each coder where there are no more tutorials and the...
by Forris
Wed Mar 04, 2020 8:07 pm
Forum: Staffroom, classroom and projects
Topic: Search for speaker about building robots
Replies: 6
Views: 1643

Re: Search for speaker about building robots

Are you (or any of your colleagues) on Twitter? If so, that's really good place to put a shout out for something like this. Feel free to tag me @forrishilier and I'll shout out for you. You could also put a request for a STEM Ambassador on stem.org, and/or on the https://www.computingatschool.org.uk...
by Forris
Sat Feb 29, 2020 7:12 pm
Forum: Beginners
Topic: Setup wifi access point RPI B3
Replies: 4
Views: 600

Re: Setup wifi access point RPI B3

by Forris
Thu Feb 27, 2020 6:15 am
Forum: General discussion
Topic: Pi4 1GB Availability? US Distributor Shows It As Discontinued
Replies: 27
Views: 2792

Re: Pi4 1GB Availability? US Distributor Shows It As Discontinued

Looks pretty official to me. Looks can be deceiving. The MagPi is a free[1] fanzine for users of the Raspberry Pi computer. It was created by the community[2][3] as an unofficial volunteer produced Raspberry Pi publication. https://en.wikipedia.org/wiki/The_MagPi The MagPi has been known to publish...
by Forris
Wed Feb 26, 2020 11:19 am
Forum: Python
Topic: Straight-8 LEDs - Knight Rider style
Replies: 7
Views: 945

Re: Straight-8 LEDs - Knight Rider style

Maybe have a look at the sample code here from Adafruit: https://learn.adafruit.com/larson-scann ... ython-code

To make it look really effective, the lights need to leave a 'trail' which is fainter than the original colour (ie. (128,0,0) instead of (255,0,0))
by Forris
Tue Feb 25, 2020 2:39 pm
Forum: Python
Topic: Straight-8 LEDs - Knight Rider style
Replies: 7
Views: 945

Re: Straight-8 LEDs - Knight Rider style

I have a Straight-8 LED from https://rasp.io/inspiring/ I would like to make them flash in a similar way to the lights on front of KITT (Knight Rider) e.g. https://www.youtube.com/watch?v=WxE2xWZNfOc I am new to Python so hoping someone might have done similar or can advise how to? An example piece...
by Forris
Tue Feb 25, 2020 2:26 pm
Forum: Python
Topic: Straight-8 LEDs - Knight Rider style
Replies: 7
Views: 945

Re: Straight-8 LEDs - Knight Rider style

Have a look at gpiozero and it's ledboard recipe https://gpiozero.readthedocs.io/en/stable/recipes.html#ledboard You can turn each LED on/off in turn rapidly to replicate the KITT style "scanner" Someone has already done something like this https://gist.github.com/erikvanzijst/df1d182e47e53d519f445...
by Forris
Tue Feb 25, 2020 2:22 pm
Forum: Scratch
Topic: Scratch 3 with Lego Mindstorms EV3
Replies: 1
Views: 1430

Re: Scratch 3 with Lego Mindstorms EV3

You could also use the (superior, IMHO) https://makecode.mindstorms.com/ to program the EV3.

It's browser-based, so completely cross-platform, and supports all the features of Mindstorms, unlike the more limited Scratch implementation.
by Forris
Thu Feb 20, 2020 3:33 pm
Forum: Picademy
Topic: Raspberry Pi Certified Educator program in 2020?
Replies: 3
Views: 5460

Re: Raspberry Pi Certified Educator program in 2020?

I've not seen any UK courses planned for this year yet. They're usually some around August/September time, so keep an eye on the page for details.
by Forris
Tue Feb 18, 2020 3:11 pm
Forum: General discussion
Topic: Powering Pi Zero with AA batteries
Replies: 29
Views: 2788

Re: Powering Pi Zero with AA batteries

How about this: https://www.amazon.co.uk/Gomadic-Portable-Battery-Raspberry-Board/dp/B00BR22W0Q A fresh AA battery provides 1.6V. 4x1.6V=6.4V. Pi should not be powered with more than 5.3V. Is there a step-down converter involved? Well, according to the listing, it is designed specifically for the R...
by Forris
Mon Feb 17, 2020 4:14 pm
Forum: Automation, sensing and robotics
Topic: GPIO to PIGPIO translation
Replies: 3
Views: 469

Re: GPIO to PIGPIO translation

Unless you have a particular reason for using pigpio, have you tried using the gpiozero library?

https://gpiozero.readthedocs.io/en/stab ... ght-sensor
by Forris
Sat Feb 15, 2020 4:25 pm
Forum: Beginners
Topic: BlueDot with Raspberry Pi4 [SOLVED]
Replies: 10
Views: 953

Re: BlueDot with Raspberry Pi4

From the BlueDot documentation, under 'Pair a Raspberry Pi and Android phone:

'You may receive errors relating to services not being available or being unable to connect: these can be ignored.'
by Forris
Fri Jan 24, 2020 6:25 pm
Forum: Beginners
Topic: Can't get it to do anything
Replies: 11
Views: 1198

Re: Can't get it to do anything

I have a Raspberry Pi Zero W and am trying to get it working for a project that I have. Here is what I have done so far: 4. Copy all the files in the ZIP to the micro SD card Thanks - Rowan You can't just drag & drop the files onto the sd card, you need to use something like Etcher (https://www.bal...
by Forris
Fri Jan 24, 2020 9:40 am
Forum: Python
Topic: GPIO Behavior with python
Replies: 5
Views: 641

Re: GPIO Behavior with python

I'm glad that you got your code working but can I suggest, as you are a newcomer to coding the Pi with Python, that you use the gpiozero library instead of RPI.GPIO. You'll find it much easier to understand and you'll be able to focus more on your projects and less on the technical aspects of the co...
by Forris
Fri Jan 24, 2020 9:23 am
Forum: Beginners
Topic: Can't get it to do anything
Replies: 11
Views: 1198

Re: Can't get it to do anything

I have a Raspberry Pi Zero W and am trying to get it working for a project that I have. Here is what I have done so far: 4. Copy all the files in the ZIP to the micro SD card Thanks - Rowan You can't just drag & drop the files onto the sd card, you need to use something like Etcher (https://www.bal...

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