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by Gavinmc42
Thu Mar 21, 2019 11:29 am
Forum: Teaching and learning resources
Topic: Building the ultimate robotics curriculum with Raspberry Pi?
Replies: 2
Views: 87

Re: Building the ultimate robotics curriculum with Raspberry Pi?

Hey, do we get badges if we do those courses? Robotics would be the master class version, robotics pretty much covers everything? Do everything on Pi's? Some of the stuff you want to do, Ubuntu etc is not Pi's friendly, yet. And "Ultimate" is a high target :o There is only continuous learning, every...
by Gavinmc42
Thu Mar 21, 2019 11:05 am
Forum: General programming discussion
Topic: What does your development/deployment environment look like?
Replies: 8
Views: 677

Re: What does your development/deployment environment look like?

I use Geany most of the time. The rest of the time Ultibo (Free Pascal/Lazarus)running on Windows, Linux Mint or on a Pi with Raspbian. Midnight Commander's editor for networked PI's that are mostly running shell script apps on PiCore Linux.. If you are along time coder(not Windows), just use whatev...
by Gavinmc42
Thu Mar 21, 2019 5:26 am
Forum: General discussion
Topic: arm ml processor
Replies: 2
Views: 108

Re: arm ml processor

I suspect these devices are unobtainium for normal people at this time. So were camera sensors at one time. With a bit of luck the next Pi will be filled with unobtainium? But that would be pure speculation which will get this post locked. You can do some ML stuff already with the Arm Compute Libra...
by Gavinmc42
Thu Mar 21, 2019 4:27 am
Forum: Automation, sensing and robotics
Topic: RPI + INA219 with off grid solar panel
Replies: 5
Views: 147

Re: RPI + INA219 with off grid solar panel

We made our own PCBs here, this was a small inline cable PCB with heatsink.
Most of the good chips are SMD these days, seem to spend my life soldering under a microscope :(

Useful things - Adafruit, Sparkfun, Seeed Studios should make them.
You might be able to find breakout board for the footprint.
by Gavinmc42
Thu Mar 21, 2019 2:30 am
Forum: Off topic discussion
Topic: My own 8-bit RETRO Homecomputer: RhoCoCo
Replies: 111
Views: 16111

Re: My own 8-bit RETRO Homecomputer: RhoCoCo

You got me interested and I did a retro google. I came into micros at that point, Hex display and keyboard on the MEK6800D2 kit. Missed the point due to the expense of the 6800 but got hooked on 68HC05, 68HC11's a bit later. Writing self modifying code on 6805's was fun. 6502 and Z80 survive but not...
by Gavinmc42
Wed Mar 20, 2019 7:52 am
Forum: Off topic discussion
Topic: Pi vs Jetson Nano
Replies: 16
Views: 649

Re: Pi vs Jetson Nano

Could a RISC-V core be designed for $10 with that level of performance? Perhaps, how close do you need to be? This looks much more interesting, dual core 64bit RISC-V with AI core https://www.seeedstudio.com/Artificial-Intelligence-c-1234/Sipeed-MAIX-I-module-WiFi-version-1st-RISC-V-64-AI-Module-K2...
by Gavinmc42
Wed Mar 20, 2019 1:29 am
Forum: Off topic discussion
Topic: Pi vs Jetson Nano
Replies: 16
Views: 649

Re: Pi vs Jetson Nano

So how is this board any more AI than any other? It is the software libraries that do the AI. Nvidia have a lot of software for these chips. Some cpu hardware is now being optimised to run this type of software better. And software is being optimised for the chips, instead of being generic. Arm are...
by Gavinmc42
Wed Mar 20, 2019 1:11 am
Forum: Off topic discussion
Topic: My own 8-bit RETRO Homecomputer: RhoCoCo
Replies: 111
Views: 16111

Re: My own 8-bit RETRO Homecomputer: RhoCoCo

Sip7+ resistor arrays, I loved those when they came out, made DIY micro boards much neater :D Also made things like a plug in fake eprom with NOP hardwired easier. Plug one of those in and the micro would clock through the addresses. Easy to test for address line shorts etc, A cro would see square w...
by Gavinmc42
Wed Mar 20, 2019 12:20 am
Forum: Off topic discussion
Topic: Pi vs Jetson Nano
Replies: 16
Views: 649

Re: Pi vs Jetson Nano

NVIDIA Jetson Nano enables the development of millions of new small, low-power AI systems. Wow, some marketing guy has dialled the spin meter up to 11, Millions? Perhaps but it will take a few years to get any software working. This is more a Pi Compute Module market? Entry level Video recorder mar...
by Gavinmc42
Tue Mar 19, 2019 6:12 am
Forum: Beginners
Topic: Cypress USB serial driver
Replies: 3
Views: 623

Re: Cypress USB serial driver

Cypress can be programmed to be whatever you want. I normally use them via i2c but I just plugged a kitprog2 (psoc5) in and it showed up as ttyACM0. Latest kitprog software can emulate a mass storage device now too. But messing about with USB drivers can be a pain. Never tried PSoCs as USB HID devic...
by Gavinmc42
Tue Mar 19, 2019 5:55 am
Forum: Automation, sensing and robotics
Topic: RPI + INA219 with off grid solar panel
Replies: 5
Views: 147

Re: RPI + INA219 with off grid solar panel

The Pi's ground is not connected to the solar "gndx". I have isolated 5 and 3v3 power supplies 5Vx, 3V3x for the external sensors etc. If you only need a small amount of isolated power then the ADM3260 is simpler, data and power isolation. Messing about with common gnd connections can result in grou...
by Gavinmc42
Mon Mar 18, 2019 11:41 pm
Forum: Beginners
Topic: MotionEyeOS General Use
Replies: 2
Views: 86

Re: MotionEyeOS General Use

You could try Pikrellcam, it can be built on Raspbian Lite. I use both, MotionEyeOS for USB Sony PS3 Eyecams and Pikrellcams for the Picameras. And if you feel like jumping off the deep end. Roll your own with PiCore Linux and Python Picamera or even baremetal on Ultibo. I did get upto 7 cameras, th...
by Gavinmc42
Mon Mar 18, 2019 10:42 am
Forum: Wanted
Topic: We need a special device
Replies: 15
Views: 407

Re: We need a special device

Depends of the footprint you need. Most thermal printers are small so I will assume a handheld device, in which case use a Zero. If you need more processing power use the 3A+. If you have the capability then use a CM but they are a bit harder to use and if you need RF expect RF EMC approval issues. ...
by Gavinmc42
Mon Mar 18, 2019 9:13 am
Forum: General discussion
Topic: number of raspberry pi 3 made?
Replies: 18
Views: 670

Re: number of raspberry pi 3 made?

Re Netbooting. Interim step until bugs get fixed, add a Ultibo kernel loader? When I first heard about it I tested an Ultibo Pi webserving the kernel.img to another Pi. https://ultibo.org/forum/viewtopic.php?f=9&t=135&p=367&hilit=webserver#p367 The kernel.img itself would not be much bigger than the...
by Gavinmc42
Mon Mar 18, 2019 6:35 am
Forum: Automation, sensing and robotics
Topic: RPI + INA219 with off grid solar panel
Replies: 5
Views: 147

Re: RPI + INA219 with off grid solar panel

I use i2c isolators for solar stuff, ADUM1250 etc
That way I can have battery and panel measurements.
And it adds a bit of zap protection ;)

It also helps when doing multiple series connected panels.
I have used LTC2945 as they can steal power from the panel.
by Gavinmc42
Mon Mar 18, 2019 2:31 am
Forum: Wanted
Topic: We need a special device
Replies: 15
Views: 407

Re: We need a special device

Most of the hard design work is done the Pi's PCB. Interfacing to the GPIO is easy for any electronics design guy. You can plug onto the GPIO header or invert the Pi and plug it onto a motherboard. Plenty of prototyping ways to use Pi's using plug on on wires. So is the OP asking for help in designi...
by Gavinmc42
Mon Mar 18, 2019 1:55 am
Forum: Graphics, sound and multimedia
Topic: Starship button screen and console
Replies: 1
Views: 71

Re: Starship button screen and console

I did a LCARs screen in OpenVG in Ultibo. https://ultibo.org/forum/viewtopic.php?f=15&t=997&hilit=lcars&start=10 The Library was ported from AJ Starks Go library. https://github.com/ajstarks/openvg The Orville got me hooked on the look of those screens, so I got interested in seeing how far OpenVG c...
by Gavinmc42
Mon Mar 18, 2019 1:28 am
Forum: General discussion
Topic: Zero clusters? Pi day deals
Replies: 15
Views: 460

Re: Zero clusters? Pi day deals

Lots of Uni and some schools have displays, these are becoming more interactive. Museums and even libraries are becoming tech embedded. The Arduino was invented for Art students. What happens when you have Zero's with displays and Bluetooth beacons? Once we have holographic projectors are we in Blad...
by Gavinmc42
Sun Mar 17, 2019 10:11 am
Forum: Camera board
Topic: Jpeg compression On board or on RPI
Replies: 4
Views: 118

Re: Jpeg compression On board or on RPI

The data from the camera sensor goes via an image processing system. Most of it (all?) is done by the VC4 including the JPEG and H.264. But there is a way to get the raw data so you can process everything yourself. A search will find that way. There is also info on the CSI in the forums. The sensors...
by Gavinmc42
Sun Mar 17, 2019 9:56 am
Forum: General discussion
Topic: Zero clusters? Pi day deals
Replies: 15
Views: 460

Re: Zero clusters? Pi day deals

Is a video wall of multiple HDMI frameless monitors an application for a cluster of pi zeros? Yep that first video wall had screens of all sorts of weird sizes. Not sure I think they went and made a display Company from that starting point. Or were already a display company? Probably could be recre...
by Gavinmc42
Sun Mar 17, 2019 1:43 am
Forum: Beginners
Topic: Can I Run Unity on my Raspberry Pi 3 B+?
Replies: 7
Views: 207

Re: Can I Run Unity on my Raspberry Pi 3 B+?

You might want to try the latest Godot 3.1 it has gone back to OpenGLES2.
by Gavinmc42
Sun Mar 17, 2019 1:08 am
Forum: General discussion
Topic: design of a generic raspberry pi 3 form factor open source notebook cabinet?
Replies: 17
Views: 463

Re: design of a generic raspberry pi 3 form factor open source notebook cabinet?

If the design would be kept simple such that it could be assembled and disassembled with a screwdriver then people could build their own notebook. Pick the display, keyboard, touchpad etc they prefer. One Laptop per Child? Not a new idea. http://one.laptop.org/ You want a customizable version of th...
by Gavinmc42
Sat Mar 16, 2019 11:17 am
Forum: General discussion
Topic: questions about the pi zero cluster hat
Replies: 4
Views: 133

Re: questions about the pi zero cluster hat

It has a USB hub and can switch power on and off to the 4 x Zero's individually. I use USB boot mode to load the boot files and then a kernel.img. Most of the time that kernel is a baremetal Ultibo kernel but I have got the PiCore Linux kernel to load. You can put Raspbian lite or other OS on the SD...
by Gavinmc42
Sat Mar 16, 2019 12:37 am
Forum: General discussion
Topic: Zero clusters? Pi day deals
Replies: 15
Views: 460

Re: Zero clusters? Pi day deals

Zero's can boot from the USB too, so no need for uSD cards. See USBboot on the github. But I'm having to make USB extension cables as I want to use the Cluster for extra displays and need to access the HDMI. I could not find off the shelf micro USB cable extensions. "Pi Day" is becoming a thing? htt...
by Gavinmc42
Sat Mar 16, 2019 12:23 am
Forum: Off topic discussion
Topic: My own 8-bit RETRO Homecomputer: RhoCoCo
Replies: 111
Views: 16111

Re: My own 8-bit RETRO Homecomputer: RhoCoCo

Access to laser just made it a software issue. It takes time to CAD but once everything is working you could have a dozen sets in less that an hour :D Klingon font version? or go real retro and Sanskrit, Celtic Runes? A quick google found one name of the engraving sheets. https://www.gravograph.com....

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