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by boznz
Tue Sep 03, 2019 2:57 am
Forum: Troubleshooting
Topic: Raspberry Pi 4 temperature
Replies: 529
Views: 132630

Re: Raspberry Pi 4 temperature

I suspect anyone working headless for IOT, Industrial or robotics will care more about the system running cool than its performance. Our industrial controllers have been working flawlessly for years with the RPi2 & 3, however RPi3's are quickly being sold out and unfortunately it will need to be red...
by boznz
Fri Sep 29, 2017 2:58 am
Forum: General discussion
Topic: RASPBIAN STRETCH I2C interface broken
Replies: 14
Views: 5666

Re: RASPBIAN STRETCH I2C interface broken

Hi Thanks for all your help. I have re-written the I2C Slave firmware to remove clock stretching and it works 100% reliably on the new driver using both Python and C++. http://rodyne.com/wp-content/uploads/2017/09/rpi_i2c.jpg For information to anyone else having same problem with PIC16F here is som...
by boznz
Wed Sep 20, 2017 8:32 pm
Forum: General discussion
Topic: RASPBIAN STRETCH I2C interface broken
Replies: 14
Views: 5666

Re: RASPBIAN STRETCH I2C interface broken

Thanks for the reply. I was not aware of the I2C clock-stretching bug ( http://www.advamation.com/knowhow/raspberrypi/rpi-i2c-bug.html ), the bug looks to be 4 years old so it may be fixed on the RPi3 I am using, however if not this may be the problem and I was just lucky on the previous driver. I h...
by boznz
Tue Sep 19, 2017 11:34 pm
Forum: General discussion
Topic: RASPBIAN STRETCH I2C interface broken
Replies: 14
Views: 5666

Re: RASPBIAN STRETCH I2C interface broken

Hi Guys I created the simplest C Program I could to test this, just a single read of register 2 at address 5 as below (I'm not a C++ person and its mostly copied/pasted from the internet so I hope its OK) #include <iostream> #include <cstring> #include <iomanip> #include <errno.h> #include <wiringPi...
by boznz
Sat Sep 16, 2017 3:22 am
Forum: General discussion
Topic: RASPBIAN STRETCH I2C interface broken
Replies: 14
Views: 5666

Re: RASPBIAN STRETCH I2C interface broken

Hi. "Winetec" (david) got in touch with me to look at this. The board in question is similar to the design here (http://rodyne.com/?p=754) with improved analog, and uses a similar PIC 16F1783 which is configured for I2C not SMBus, it `should` support the full I2C slave protocol. It will take me a fe...
by boznz
Thu Aug 25, 2016 9:46 pm
Forum: Automation, sensing and robotics
Topic: Controlling 24VAC using a relay
Replies: 6
Views: 2545

Re: Controlling 24VAC using a relay

Hi

Not too sure on your electronics skills but my recent project controlled eight 24V relays and provided the RPi with power, a bit of cutting and pasting into a new circuit could get you started if your up for a challenge http://rodyne.com/?p=754

Boz
by boznz
Thu Aug 25, 2016 5:44 am
Forum: Automation, sensing and robotics
Topic: PT100 sensor and relay control
Replies: 0
Views: 683

PT100 sensor and relay control

Hi Guys I have just completed a project to read 4 x PT100 sensors and control 8 relays, the project is a little different as it has a 40 pin header on the board and can plug in a Raspberry Pi 2 or 3 directly into it. The board will provide the Raspberry Pi with a filtered 5V supply from an industria...
by boznz
Sat Apr 02, 2016 9:22 am
Forum: Bare metal, Assembly language
Topic: Ultibo core a bare metal environment for Raspberry Pi
Replies: 65
Views: 21609

Re: Ultibo core a bare metal environment for Raspberry Pi

At First I thought this was an April Fools Joke by my friend after we were talking about the old turbo pascal days and how simple it all used to be and how this would be good on the pi, now after running the demo I must say it is a very impressive achievement. Bare Metal Pascal, who would have thoug...

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