Raspberry Pi Forums

teddysetgo

Did you ever solve this problem? I'm having the exact same issue.

teddysetgo

Tim, are you suggesting that had I simply kept dist-upgrading, I would probably be in good shape?

So if I roll back all the way to an old "working" version, and then just dist-upgrade to get current, I might be good?

teddysetgo

Based on all of this, it would appear that everything is identical. Very strange. The bug is most certainly there are. On many machines. All running the latest Raspbian install from Noobs. This is the exact same bug that I had two years ago which you graciously helped me to fix. I suppose I'll have ...

teddysetgo

First, Flash on Pi makes me sad. Let's not talk about it. Second, is there any chance you could walk me through that a little bit. When I look in usr/lib/ on my Pi, I don't see nuscratch. So I'm not exactly sure what I'm renaming, what I'm copying, and where I'm copying it to. I really do appreciate...

teddysetgo

Tim, It seems as though this bug has returned. For the new school year, I reimaged all of the SD cards for my students' Pi's. I ran the usual update/upgrade. I was surprised to find the Key Press bug back in Scratch two years later. I opened the squeak script, but the line of code I used to comment ...

teddysetgo

So nothing special needs to be done to the file before the printer can read it? It won't need to be run through any proprietary software that isn't available on the Pi?

teddysetgo

Hello, I am a STEM teacher (primarily programming, but branching out). My Raspberry Pi lab ONLY contains Pi computers (no Windows, Mac, etc.). And I would like to keep it that way. I would like to get a couple of 3D printers. I don't know much about 3D printing. Will my students be able to download ...

teddysetgo

Thanks for the help, I got my stepper working with gpiozero.

Now, what type of motor are they using in this resource:
https://www.raspberrypi.org/learning/ph ... on/motors/

If anyone has a link to a specific recommended model I could purchase, that would be great.

teddysetgo

I appreciate that code Joan. But I really need it working with gpiozero or I will give up on steppers.

teddysetgo

I would like to work on some projects involving stepper motors and I'm having a bit of a problem. I am using the 28BYJ-48 stepper motor with supplied controller board and a Pi 3. I have connected the motor the the controller board, and then connected the controller board to 4 GPIO pins on the Pi. I ...

teddysetgo

I swapped out the HC-SR04. I tried 8 different units. I have the same problem with each one. The readings seem to vary slightly, with one unit getting as high as 60 cm. But not even close to the 400 cm readings I should be getting.

Any other ideas out there?

teddysetgo

I tried switching to echo 18 and trigger 17 but it didn't seem to help. I'm topping out at about 56 cm.

I really appreciate this help.

Here is a picture of my output when I point the sensor (by hand) into a vast open space. It's not a consistent reading.

http://imgur.com/gallery/TpHc2

teddysetgo

I have tried pointing the sensor in a variety of directions just in case something was impeding it. No change. Here is a link to my wiring. At this point, I'm assuming that I'm making a mistake here. I have never divided voltage before. In fact, I'm pretty new to a lot of this (if you couldn't tell,...

teddysetgo

I have tried several different sensors with the same results. So unless they're all trashed, I don't think that's the issue. I believe I have it wired correctly as explained. I believe I have divided the voltage correctly as well. Is it possible that my GPIO pins have been damaged? Perhaps I should ...

teddysetgo

Change ultrasonic = DistanceSensor(echo=15, trigger=4) to ultrasonic = DistanceSensor(echo=15, trigger=4, max_distance=5) If that works correctly it would rule out power being a problem. Changing max_distance didn't change my results. I should mention that when it tops out around 50, it doesn't kee...

teddysetgo

A power issue is possible, but how can I adjust this?

It is definitely a clear 'tunnel' with nothing else blocking the way. Also, I have tried it with many different objects to test for reflection differences. It's always the same result: the measurements are fine until right around 50cm.

teddysetgo

Right now the code is quite simple: from gpiozero import DistanceSensor ultrasonic = DistanceSensor(echo=15, trigger=4) while True: print(ultrasonic.distance * 100) Even if the maximum distance is set by default to 1 meter, I should still be getting results greater than 50cm, so that doesn't seem to...

teddysetgo

I have connected an HC-SR04 distance sensor to my Pi 3 and written Python code using gpiozero to simply report distances to the shell. It works, up until about 50cm. I was under the impression that I should be getting ranges closer to 2 meters or more. Does anyone have ANY ideas or suggestions for w...

teddysetgo

Will there be any way for more schools to obtain weather stations?

teddysetgo

I found it. It's in the Squeak shell script, not Scratch.

It's working great. Thanks for your help!

Side question: Will NuScratch continued to be developed now that Flash has been made available for the Pi?

teddysetgo

I don't see that line in the shell script. Perhaps I'm looking in the wrong place? The scratch shell script in my /usr/bin/ directory doesn't include that code.

teddysetgo

Any updates on this?

Changing Squeak didn't seem to help. I'll take just about any solution at this point. I just need working key presses again for my students.

teddysetgo

I need to do this to about 30 Pi's, which I'm willing to do. However, how long until we might see a published update? I might be willing to wait.

Thanks for looking into this and responding so quickly and clearly. Your contributions to Scratch for Pi are literally changing lives in my classroom.

teddysetgo

How can I 'downgrade' to a previous version of Scratch to test this out myself?

Similarly, how can I downgrade to a previous Raspbian?

teddysetgo

I experimented with this some more and it is definitely a new bug. It isn't just for the arrow keys, but for any key. The sensing block that returns a boolean for key whether or not a key is pressed gets stuck on true if you press a different key before releasing the original key. Example: -The key ...

Search found 41 matches

Re: Can't get output from wind-direction

Re: New Scratch things for Raspbian September 2016

Re: New Scratch things for Raspbian September 2016

Re: New Scratch things for Raspbian September 2016

Re: New Scratch things for Raspbian September 2016

Re: 3D Printing Question

3D Printing Question

Re: Stepper Motor Help

Re: Stepper Motor Help

Stepper Motor Help

Re: HC-SR04 Range Issues

Re: HC-SR04 Range Issues

Re: HC-SR04 Range Issues

Re: HC-SR04 Range Issues

Re: HC-SR04 Range Issues

Re: HC-SR04 Range Issues

Re: HC-SR04 Range Issues

HC-SR04 Range Issues

Getting a Weather Station

Re: New Scratch things for Raspbian September 2016

Re: New Scratch things for Raspbian September 2016

Re: New Scratch things for Raspbian September 2016

Re: New Scratch things for Raspbian September 2016

Re: New Scratch things for Raspbian September 2016

Re: New Scratch things for Raspbian September 2016