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by timrowledge
Tue Nov 15, 2016 7:31 pm
Forum: Scratch
Topic: GPIO for Scratch a step backwards
Replies: 4
Views: 4161

Re: GPIO for Scratch a step backwards

Scratch on the Pi is built in the only actual proper language, which is to say Smalltalk. It is not Flash. MIT's second version(aka Scratch 2) is a rewrite in Flash. Whilst using Flash makes no sense for anything, ever, the underlying reason for their change kinda-sorta makes sense since they wanted...
by timrowledge
Tue Nov 15, 2016 6:38 pm
Forum: Beginners
Topic: Can I jump the 3.3v power pin to a GPIO pin?
Replies: 3
Views: 1621

Re: Can I jump the 3.3v power pin to a GPIO pin?

That's pretty much what you do if you stick a switch/button on a breadboard and use a gpio pin to detect whether it's on, so you should have any problems. Just make sure not to connect a 5v instead...
by timrowledge
Tue Nov 15, 2016 6:36 pm
Forum: Beginners
Topic: Supplying Power to an MCU with the Pi
Replies: 4
Views: 855

Re: Supplying Power to an MCU with the Pi

I've just had a similar problem, albeit getting power and net to a Pi rather than another device. The initial issue was net access from my workshop to connect a weather station, but after discovering that wifi simply wasn't going to give a reliable link through two layers of metal roofing I went POE...
by timrowledge
Wed Nov 09, 2016 7:04 am
Forum: Troubleshooting
Topic: Better mousedriver?
Replies: 10
Views: 1629

Re: Better mousedriver?

The word boundary selection being referred to is the responsibility of the application and usually a preference setting - thank goodness, because that means I can turn it off! I want the selection the way I set it, not the way some dope programmer thinks it should be.
by timrowledge
Thu Oct 27, 2016 10:19 pm
Forum: Beginners
Topic: Programming for Kids
Replies: 15
Views: 5863

Re: Programming for Kids

Giving kids java surely counts as child abuse?

Start them with Scratch. Consider going on to Etoys. Possibly Python if you really insist on a quaint old-fashion dead-text language. Squeak Smalltalk if you want to do them some good.
by timrowledge
Thu Oct 27, 2016 4:14 pm
Forum: General discussion
Topic: How to wirelessly connect Pi 3 to Espressif
Replies: 4
Views: 4123

Re: How to wirelessly connect Pi 3 to Espressif

https://openhomeautomation.net/connect- ... pberry-pi/

That article provided plenty of information to get me started. And you certainly don't need to add another wifi device to your Pi. It's also useful to look at mqtt - a fairly decent message sending system for devices to talk together.
by timrowledge
Mon Oct 24, 2016 5:54 am
Forum: General discussion
Topic: Which components of a Pi have unique serial numbers..?
Replies: 31
Views: 4777

Re: Which components of a Pi have unique serial numbers..?

broe23 wrote:Pretty much anything that is a Silicone chip.
Phew. Just as well none of my Pi have any 'silicone' chips then.

Remember- silicon is used in Silicon Valley for computers. Silicone is used in Hollywood for fake boobs.
by timrowledge
Sat Oct 22, 2016 3:45 am
Forum: Scratch
Topic: New Scratch things for Raspbian September 2016
Replies: 36
Views: 36071

Re: New Scratch things for Raspbian September 2016

For those of you waiting for a new release that solves this key event problem, an official update package will be out sometime soon. Until then you may like to try out the blob at https://github.com/raspberrypi/scratch/blob/master/NuScratch20161021.tgz Download it to some place on your Pi. cd / sudo...
by timrowledge
Wed Oct 12, 2016 9:20 pm
Forum: Raspberry Pi OS
Topic: Flash Player now available for Chromium
Replies: 98
Views: 62129

Re: Flash Player now available for Chromium

Okay, I get that this is an MIT thing. Did Scratch 1 use Flash, does it no longer fulfil our educational goals? No, Scratch 1 was a native ARM application. . Well actually Scratch 1 up to 1.4 and the last NuScratch release is a Smalltalk application that runs on any platform supported by the Squeak...
by timrowledge
Wed Oct 12, 2016 7:22 pm
Forum: Scratch
Topic: New Scratch things for Raspbian September 2016
Replies: 36
Views: 36071

Re: New Scratch things for Raspbian September 2016

After a really "fun" couple of days debugging I've been able to pin the blame on some code recently added to the Squeak vm intended to support 'composition input' - for Japanese etc. Because that involve multiple keypresses per ideograph there is some nasty interaction with repeat keys. I was hoping...
by timrowledge
Sat Oct 08, 2016 12:50 am
Forum: Scratch
Topic: New Scratch things for Raspbian September 2016
Replies: 36
Views: 36071

Re: New Scratch things for Raspbian September 2016

If you were to check the 'old' blog page for the latest release of Raspbian you'd see a comment near the top about updating scratch. We though we had fixed the key event problem - and indeed when run to test things all seems well. It's just that somewhere, something weird is happening and when insta...
by timrowledge
Fri Oct 07, 2016 6:51 pm
Forum: Scratch
Topic: New Scratch things for Raspbian September 2016
Replies: 36
Views: 36071

Re: New Scratch things for Raspbian September 2016

ghp wrote:For the distribution of updates in a not network connected classroom, I use a 'snowball' method:
Cute! I like that - it makes fixing the problem part of the game.
by timrowledge
Fri Oct 07, 2016 6:48 pm
Forum: Scratch
Topic: Changing font size in editor
Replies: 5
Views: 2571

Re: Changing font size in editor

Just to expand a little on Gerhard's answer - create (if it doesn't already exist) a file called .scratch.ini in your home directory for example cd ~ nano .scratch.ini add the line fontscale=1.3 then save the file with ctrl-o (to write), CR, ctrl-x (to quit nano) You will want to experiment with the...
by timrowledge
Fri Oct 07, 2016 1:46 am
Forum: Scratch
Topic: New Scratch things for Raspbian September 2016
Replies: 36
Views: 36071

Re: New Scratch things for Raspbian September 2016

Ouch, that's a lot of Pi to clean up. Still, once you've done the download and unzip you could simply copy the usr/lib/squeak.5.0201608180858 directory to each machine's /usr quickly enough. Assuming they're all networked.. eh, even stick it on a usb stick would help. Of course, this is exactly wher...
by timrowledge
Fri Oct 07, 2016 12:11 am
Forum: Scratch
Topic: New Scratch things for Raspbian September 2016
Replies: 36
Views: 36071

Re: New Scratch things for Raspbian September 2016

OK, it looks like something really stupid happened and the version of the vm included in the latest release has a key event bug. Worse, I can't see any way this could have been missed, which is especially annoying since clearly it was ... It's actually fixed in the latest development systems, which ...
by timrowledge
Wed Oct 05, 2016 6:24 pm
Forum: General discussion
Topic: create program to automatically send Tweets
Replies: 5
Views: 2423

Re: create program to automatically send Tweets

I'm pretty sure you're not talking about Scratch stuff so you should consider reporting your own post to ask the moderators to move it to, say, 'General Discussion' or similar.
by timrowledge
Wed Oct 05, 2016 6:22 pm
Forum: Scratch
Topic: New Scratch things for Raspbian September 2016
Replies: 36
Views: 36071

Re: New Scratch things for Raspbian September 2016

Yes, something broke in keypress handling done in the 'is this key down' style as opposed to the 'oh a keypress event, what do I do' style. The annoying thing is that I haven't been able to replicate it running on the prior Raspbian but same Scratch. Which makes for a very puzzling debug session bec...
by timrowledge
Tue Oct 04, 2016 5:42 pm
Forum: Scratch
Topic: DS18B20 temperature readings
Replies: 5
Views: 3163

Re: DS18B20 temperature readings

This is a bit odd. If you're getting a proper value in the w1_slave file you pretty much must have set things up properly. Does it seem to work if you use a demo program like the one on https://learn.adafruit.com/adafruits-raspberry-pi-lesson-11-ds18b20-temperature-sensing/software ? That's what I u...
by timrowledge
Tue Oct 04, 2016 5:23 pm
Forum: Scratch
Topic: New Scratch things for Raspbian September 2016
Replies: 36
Views: 36071

Re: New Scratch things for Raspbian September 2016

I have discovered why my Pibrella programs stopped working with the latest version of Scratch. Previously, broadcast commands controlling the leds etc. were not case-sensitive so a command such as RedOn would work. This is the way I typed such commands. Now the command has to be redon, all lowercas...
by timrowledge
Fri Sep 30, 2016 11:26 pm
Forum: Scratch
Topic: New Scratch things for Raspbian September 2016
Replies: 36
Views: 36071

Re: New Scratch things for Raspbian September 2016

I've just been trying the Pibrella out on the very latest Raspbian/Scratch. It certainly isn't working quite like I expect. Testing each individual output works ok. What seems to have happened is that I left in a smidge of code that ought to have been altered when I changed the broadcast command par...
by timrowledge
Fri Sep 30, 2016 5:21 pm
Forum: Advanced users
Topic: Large Scale Pi Management
Replies: 16
Views: 9754

Re: Large Scale Pi Management

Also look at the boot-from-pxe stuff.
by timrowledge
Fri Sep 30, 2016 5:20 pm
Forum: Troubleshooting
Topic: xrdp / win10 remote desktop fails
Replies: 3
Views: 3831

Re: xrdp / win10 remote desktop fails

Did you
`sudo apt-get purge realvnc-vnc-sexrver`
before installing xrdp?
by timrowledge
Fri Sep 30, 2016 5:19 pm
Forum: Beginners
Topic: New RealVNC server config
Replies: 8
Views: 5924

Re: New RealVNC server config

I prefer using xrdp because of this interlocking between the display size and the vcc idea of display size. Xrdp lets you choose a screen size when you connect, which seems much more helpful to me. Remember yo have to follow the instructions to remove realvnc *first* if you choose to use xrdp ie- `s...
by timrowledge
Thu Sep 29, 2016 9:54 pm
Forum: Scratch
Topic: New Scratch things for Raspbian September 2016
Replies: 36
Views: 36071

Re: New Scratch things for Raspbian September 2016

the usual commands to the outputs of the Pibrella board, both the on-board leds and the connector outputs, no longer produce a response. Pressing the big red button is detected. Hmm. Odd, since I did test my Pibrella with the latest code just a couple of weeks ago. Ah, the joys of software - how is...
by timrowledge
Thu Sep 29, 2016 9:07 pm
Forum: Raspberry Pi OS
Topic: XRDP in 2016-09-23 image
Replies: 2
Views: 835

Re: XRDP in 2016-09-23 image

If you do the correct mix of removing the realvnc stuff and adding the xrdp it works - at least on my sizeable pile of Pi2's & 3's. I prefer xrdp because it is independent of the cdmi display settings; at least so far as I understood Simon's explanations to me a few days ago RealVNC pickup on the ma...

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