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by picadilly
Thu Jan 28, 2016 5:44 am
Forum: Raspbian
Topic: Problems with kernel compile
Replies: 1
Views: 511

Problems with kernel compile

Hi, I am trying to compile rpi-3.18.y as a cross compile on Ubuntu using the instructions provided in the documentation section. This worked previously with rpi-4.1.y but fails for 3.18 with the message: fs/btrfs/ctree.c:26:21: fatal error: locking.h: No such file or directory I suspect the problem ...
by picadilly
Mon Nov 09, 2015 4:59 pm
Forum: Automation, sensing and robotics
Topic: LinuxCNC
Replies: 1021
Views: 317887

Re: LinuxCNC

Doug,

thanks, this is good information. This is based on the xemonai kernel. I'll dig into that when I get home tonight. As I wrote, I am not that experienced with Linux and will have to fight my way through this.
by picadilly
Mon Nov 09, 2015 3:16 pm
Forum: Automation, sensing and robotics
Topic: LinuxCNC
Replies: 1021
Views: 317887

Re: LinuxCNC

I am using a Pi 2. The ribbon cable connection is designed around that GPIO header.
by picadilly
Mon Nov 09, 2015 2:08 pm
Forum: Automation, sensing and robotics
Topic: LinuxCNC
Replies: 1021
Views: 317887

Re: LinuxCNC

No, it's the official Raspberry Pi touch screen. It uses the special display port on the Pi (the only display to do so). That handles the display output as well as the touch screen input. Really sweet. It will only work with the latest Raspberian OS though. Even if you download the latest image, you...
by picadilly
Mon Nov 09, 2015 5:43 am
Forum: Automation, sensing and robotics
Topic: LinuxCNC
Replies: 1021
Views: 317887

Re: LinuxCNC

Hi kinsa, you might recall I posted some stuff about wanting to design an expanded version of the PicNC board that would support also input from an encoder wheel and buttons and that could control the power up/down process a while back. The goal is to build a small, self contained box to control a m...
by picadilly
Wed May 20, 2015 5:51 pm
Forum: Automation, sensing and robotics
Topic: LinuxCNC
Replies: 1021
Views: 317887

Re: LinuxCNC

OK got it. I hadn't studied the code, so I didn't know that part. I'll keep the line connected then 'just in case' to stay compatible for potential future code updates. Obviously it does no harm to keep that line connected. BTW, do you happen to know what document types can be posted on this forum? ...
by picadilly
Wed May 20, 2015 1:03 pm
Forum: Automation, sensing and robotics
Topic: LinuxCNC
Replies: 1021
Views: 317887

Re: LinuxCNC

Yes, I am using the CS line only for the PICnc part. The other chip is using the serial port. No chip select lines there. I just wanted to make sure I have the CS line connected to the correct spot on the Pi header to ensure your code will actually run correctly. The PICnc schematic only shows the C...
by picadilly
Wed May 20, 2015 4:14 am
Forum: Automation, sensing and robotics
Topic: LinuxCNC
Replies: 1021
Views: 317887

Re: LinuxCNC

Thanks, I'll check that out. If a program running on Linux can register as a HID device, how it gets the data does not really matter (USB, Serial, I2C etc.). I will see. There is just one thing I would like to confirm before I have boards made. For the SPI chip select line I use SPI_CE0_N (also GPIO...
by picadilly
Mon May 18, 2015 12:58 pm
Forum: Automation, sensing and robotics
Topic: LinuxCNC
Replies: 1021
Views: 317887

Re: LinuxCNC

kinsa, that sounds good. I don't have much experience in coding on Linux. Since a serial device does not register with the OS as a USB device does, the handling must be all in the application that receives the serial data. Do you have any background in implementing such drivers or info you could poi...
by picadilly
Mon May 18, 2015 12:15 am
Forum: Automation, sensing and robotics
Topic: LinuxCNC
Replies: 1021
Views: 317887

Re: LinuxCNC

I just finished the PCB layout. Here is what ended up on the circuit: - A verbatim copy of the original PICnc circuit minus the LEDs. - A 40 pin header for a direct ribbon connection to the Raspberry Pi B+ and model 2. - Power feed to the Raspberry Pi via the ribbon cable with protection. - A power ...
by picadilly
Sun May 03, 2015 3:07 am
Forum: Automation, sensing and robotics
Topic: LinuxCNC
Replies: 1021
Views: 317887

Re: LinuxCNC

My hope was to make a small enclosure that looks more like an All-In-One computer, once the Pi touch screen is released. Meanwhile it will probably be a CTM (cobbled together mess). The point is that stacking boards together tends to build tall... Still, if the connector is oriented correctly it sim...
by picadilly
Sun May 03, 2015 12:47 am
Forum: Automation, sensing and robotics
Topic: LinuxCNC
Replies: 1021
Views: 317887

Re: LinuxCNC

Hi everyone. I was eying CNC machines for a while (even bought a set of stepper motors and stuff once to build one). The stumbling block for finally going through with it was always that CNC programs only seemed to work with the parallel port. This had a number of problems for me and I guess I am no...

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