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by Gert van Loo
Tue Apr 24, 2018 7:57 am
Forum: Gertboard classic
Topic: Gertbot
Replies: 111
Views: 25214

Gertbot sales in the US

featherfeet:
I have contacted a Dutch company who still have stock: https://www.kiwi-electronics.nl/
They tell me they ship world wide.
by Gert van Loo
Fri Apr 20, 2018 3:16 pm
Forum: Gertboard classic
Topic: Gertbot deceased?
Replies: 2
Views: 109

Re: Gertbot deceased?

With no heartbeat they are dead. I have not seen this before. Can you tell me how they where stored? I still have lots of the first batch here and the are still working fine. But then they are still in the original box in bag and EMC foam. I have done a re-flashing service at shipping cost for someb...
by Gert van Loo
Thu Apr 19, 2018 2:10 pm
Forum: Gertboard classic
Topic: Gertbot
Replies: 111
Views: 25214

Re: Gertbot

Most likely your serial port is not enabled on the Pi3.
See https://www.gertbot.com/pi3.html for how to get your serial port working.
by Gert van Loo
Thu Apr 19, 2018 1:07 pm
Forum: Gertboard classic
Topic: libstdc++.so.6: version `CXXABI_1.3.9' not found (required by ./gertbot)
Replies: 4
Views: 112

Re: libstdc++.so.6: version `CXXABI_1.3.9' not found (required by ./gertbot)

First: You have opened a thread but there is already a thread, with questions and answers, specific to the get bot https://www.raspberrypi.org/forums/viewtopic.php?f=42&t=101760#p1302622. Which version are you using? One of the problems with the Jessie image is that the QT4 libraries are no longer i...
by Gert van Loo
Sat Apr 14, 2018 3:56 pm
Forum: Gertboard classic
Topic: Gertbot
Replies: 111
Views: 25214

Re: Gertbot

I just did the following: Downloaded the GUI 2.8 Downloaded the gb_upload program. Connected a gertbot version 2.7 Uploaded version 2.8 to the board. Started the GUI. Selected Step Gray Pwr. Kept the Frequency at 100. Set the ramp start/stop as 1 Set the ramp speed as 0.1 Set 10000 steps. Start the ...
by Gert van Loo
Sat Apr 14, 2018 10:47 am
Forum: Gertboard classic
Topic: Gertbot
Replies: 111
Views: 25214

Re: Gertbot

RS have been the only one still buying from me. You should have a look at their stock. Manufacturing is done in batches of 2500. As sales have been declining, it is not economic viable for me to start a new batch. (I sold ~400 last year). I still have a few hundred in stock but I am not set-up to e....
by Gert van Loo
Sat Apr 07, 2018 8:29 pm
Forum: Nederlands
Topic: raspberry pi verbinden via uart naar arduino
Replies: 1
Views: 105

Re: raspberry pi verbinden via uart naar arduino

De UART kun je openen, lezen en schrijven als een file . (/dev/ttyAMA0).

Voor het echte verbinden moet je oppassen want de Arduino is 5V en de Pi is 3.3 Volt.
Google "connect raspberry pi to arduino serial" geeft ~1.000.000 resultaten.
by Gert van Loo
Tue Apr 03, 2018 8:24 pm
Forum: Gertboard classic
Topic: Gertbot
Replies: 111
Views: 25214

Re: Gertbot

It will take some time as I have some other obligations.

As to reading the end-stop switches, that is already supported.
They are just normal inputs thus a 'READ input' command will give you that information.
You can try it with the GUI by first switching to 'board' mode. On the LHS is a Read button.
by Gert van Loo
Tue Apr 03, 2018 7:55 pm
Forum: Gertboard classic
Topic: Gertbot
Replies: 111
Views: 25214

Re: Gertbot

If you connect a solenoid between A1 and A2 it will drive it. The same for B1/B2, C1/C2, D1/D2. But there is no on/off software for that, so you have to use DC motor mode. Either forward or backwards will activate the solenoid. But the board has eight half bridges. So it could drive 8 single ended d...
by Gert van Loo
Sun Apr 01, 2018 7:00 pm
Forum: Gertboard classic
Topic: Gertbot
Replies: 111
Views: 25214

Re: Gertbot

My apologies. There was a typo in the file which made that the link was wrong.
I thought that I had tested downloading each file but I must have missed that one.
It is now in place with more information how to get it running and
how to use a better font.
by Gert van Loo
Fri Mar 30, 2018 9:34 am
Forum: Gertboard classic
Topic: Gertbot
Replies: 111
Views: 25214

Re: Gertbot

Durian,
I don't think that is a good idea. You are likely to blow up your motor.
Use 8V as that is the minimum voltage the gertbot can run at.
Then add series resistors of 2.7 Ohm, ~3Watt.
by Gert van Loo
Fri Mar 30, 2018 4:05 am
Forum: Gertboard classic
Topic: Gertbot
Replies: 111
Views: 25214

Re: Gertbot

For stepper motors version 2.8 only offer ramping extra.
But there are some other non-stepper motor features like de-bounce filters on the end switches.
by Gert van Loo
Tue Mar 13, 2018 8:48 am
Forum: Gertboard classic
Topic: Gertbot
Replies: 111
Views: 25214

Re: Gertbot

There are two archives with complete source code which you can download which use the gertbot with QT: Gertbot Debug GUI and DCC example gui. The latter is the smallest. Both are written for QT4.8 and I understand the Pi now has QT5. But the code how to interface with the UART is independent from th...
by Gert van Loo
Mon Mar 12, 2018 9:54 am
Forum: Gertboard classic
Topic: Gertbot
Replies: 111
Views: 25214

Re: Gertbot

Why have you: - Written: uart_opened=true; ? - Commented out the uart_open() call ? The first line in the simple rover example main file is: // Open serial port to talk to Gertbot if (!open_connection(0)) return 1; Which you have not used. By the way: if you want to use c++ be careful when using the...
by Gert van Loo
Tue Jan 23, 2018 7:40 pm
Forum: Other projects
Topic: Home automation via Zigbee
Replies: 9
Views: 37858

Re: Home automation via Zigbee

I used "zigbee Deconz" in google an that led me to this:
https://www.dresden-elektronik.de/funkt ... pc/deconz/

Where they advertise "deCONZ V2_04_99 (Raspbian Linux)" and "deCONZ V2_06_11 (RaspBee Firmware)"
by Gert van Loo
Sat Jan 20, 2018 5:47 pm
Forum: Gertboard classic
Topic: Gertbot
Replies: 111
Views: 25214

Re: Gertbot

Great to hear that.
Note that last weekend I did mange to release version 2.8 which supports ramping of the stepper motors.

If you work with motors and motion you will find that slow starting/stopping is not a luxury, it is mandatory.
I found out when I built the 'Toast-e' prototype.
by Gert van Loo
Fri Jan 12, 2018 8:58 pm
Forum: Raspbian
Topic: Stretch missing QT4 runtime libraries
Replies: 4
Views: 413

Re: Stretch missing QT4 runtime libraries

so I often do more filtering with grep. As per my remark in the post: "apt-get list -all | grep -i qt" :-) if you want to know exactly all missing libraries for a binary use the command "ldd program". I know and used that one. In this case it only worked partially. My program was running but all th...
by Gert van Loo
Fri Jan 12, 2018 8:06 pm
Forum: Raspbian
Topic: Stretch missing QT4 runtime libraries
Replies: 4
Views: 413

Re: Stretch missing QT4 runtime libraries

Thank you for the link. I asked at stack exchange but did not get a reply. I will update my web page to tell user to use "sudo apt-get install libqtgui4" Is there a command to list all possible packages? something like: "apt-get list -all" Then I could have found that package myself using something ...
by Gert van Loo
Fri Jan 12, 2018 1:22 pm
Forum: Raspbian
Topic: Stretch missing QT4 runtime libraries
Replies: 4
Views: 413

Stretch missing QT4 runtime libraries

I received a complaint that my SW is no longer working: error while loading shared libraries: libQtGui.so.4: cannot open shared object file: No such file or directory I compared /usr/lib in stretch and and jessie and yes! in stretch the qt4 libs have disappeared. I had not noticed that, because I de...
by Gert van Loo
Fri Jan 12, 2018 11:26 am
Forum: Gertboard classic
Topic: Gertbot
Replies: 111
Views: 25214

Re: Gertbot

Downloading the QT4 libraries. You only need to download the QT4 runtime libraries if you get an error message saying " libQtGui.so.4: cannot open shared object file: No such file or directory " At the moment this is the case if you use a stretch image. (uname -r gives as output "4.9.41-v7+") In th...
by Gert van Loo
Thu Jan 11, 2018 11:36 pm
Forum: Gertboard classic
Topic: Gertbot
Replies: 111
Views: 25214

Re: Gertbot

First note that I have updated the gertbot webpages several times over the last two days. There are tested instruction on there: https://www.gertbot.com/pi3.html domoticom had even more problems (Qt4 libraries where missing) but I manged to help him out and for him it now all works: https://www.rasp...
by Gert van Loo
Thu Jan 11, 2018 10:57 pm
Forum: Gertboard classic
Topic: Gertbot
Replies: 111
Views: 25214

Re: Gertbot

Yes 2.6 is the latest but I have been asked for 2.8 which I will try to get out this weekend. I have not done so as I have not had time to update the C or python drivers. Revision 2.7 has support for servo motors. It does not use the power bridge at all but outputs a 3.3Volt variable pulse width to ...
by Gert van Loo
Wed Jan 10, 2018 11:44 pm
Forum: Gertboard classic
Topic: Gertbot
Replies: 111
Views: 25214

Re: Gertbot

In the latest image (stretch) the qt4 libraries are no longer present. This gives the following error message: error while loading shared libraries: libQtGui.so.4: cannot open shared object file: No such file or directory I have placed copies of the missing the qt4 libraries on my website with instr...
by Gert van Loo
Tue Jan 09, 2018 8:47 pm
Forum: Gertboard classic
Topic: Gertbot
Replies: 111
Views: 25214

Re: Gertbot

Dear teapot418 You are not the only one struggling with the UART on the Pi3. Shows again how one bad design decision can cause so much havoc! I also have lost track of what is going on. You are right in that if wifi still works you have something wrong. The gertbot really needs the actual mini-uart ...
by Gert van Loo
Fri Jan 05, 2018 11:26 pm
Forum: Gertboard classic
Topic: Gertboard with Pi2 Jessie
Replies: 7
Views: 2162

Re: Gertboard with Pi2 Jessie

Untested! Alpha release is there. (Untested means compiled and run on a Pi but not with a Gertboard as it is 00:30 at night here.) Was not as much code change as thought as I could replace the hard macro BCM2708_PERI_BASE with a variable bcm_periperal_base which is set by SW using a system uname cal...

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