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by RobinGreig
Thu Sep 05, 2019 5:45 pm
Forum: Raspbian
Topic: Pi 4 Raspbian Buster PEAP connection failed
Replies: 10
Views: 1788

Re: Pi 4 Raspbian Buster PEAP connection failed

Thanks @alexzace and everyone for your help with this!
Worked like a charm!
Robin
by RobinGreig
Thu Nov 15, 2018 2:40 am
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: SPI Interface receiving no data from MCP3008
Replies: 22
Views: 13668

Re: SPI Interface receiving no data from MCP3008

Thanks Gerhard! "Try using spi.max_speed_hz = 1350000 before the spi.xfer2, as the device is sensitive to this parameter." I've been fighting with the MCP3003 and my Pi3, because sometimes it worked and other times it didn't. Tried new breadboards, and jumpers. Tonight I soldered a chip directly to ...
by RobinGreig
Wed Dec 16, 2015 3:38 pm
Forum: Raspbian
Topic: Jessie: Keyboard settings not saved
Replies: 9
Views: 9975

Re: Jessie: Keyboard settings not saved

What I find interesting is that I can change the keyboard layout to Canada > English and shift 3 show the # sign rather than the British Currency Pound sign. Yet when I switch to my preferred command line (Ctrl-Alt-F1), the shift 3 still shows the British Pound sign. I have success in running sudo r...
by RobinGreig
Sat Aug 15, 2015 3:05 am
Forum: Troubleshooting
Topic: Single static IP address for eth0
Replies: 54
Views: 75638

Re: Single static IP address for eth0

Somewhere along the way an upgrade modified my /etc/network/interfaces file with the 'manual' word instead of dhcp or static and I ended up with two IP addresses, my static one and a dhcp address. I finally had time to play with it and found out that dhcpcd5 works differently than whatever was in i...
by RobinGreig
Wed Jan 07, 2015 2:21 pm
Forum: HATs and other add-ons
Topic: Programming the Gertduino with c
Replies: 6
Views: 6111

Re: Programming the Gertduino with c

Thanks Dougie; That looks very interesting and I'll look into that and report back on how is works with the Gertduino. The Arduino IDE is fine, but I do enjoy working via the command line (and usually use ssh to access my raspi's) Robin The Arduino IDE is just a java wrapper for the avr gcc compiler...
by RobinGreig
Wed Jan 07, 2015 4:17 am
Forum: HATs and other add-ons
Topic: Programming the Gertduino with c
Replies: 6
Views: 6111

Programming the Gertduino with c

Hello all; I've been looking for links to help me learn how to program the Gertduino using c, rather than the Arduino IDE. Can someone point me towards some good tutorials that would also cover how to setup the serial communication between the Gertduino and the Raspi using c as well? Thanks! Robin G...
by RobinGreig
Mon Jan 05, 2015 12:12 am
Forum: HATs and other add-ons
Topic: Connecting to Gertduino via serial
Replies: 20
Views: 13829

Re: Connecting to Gertduino via serial

Daniel; Thanks again for the help, this has cleared up the issue and actually answered a couple of other challenges that I was struggling with. I am designing a UPS for my Raspberry Pi and the arduino is going to be the battery watchdog. I'm designing it for remote applications. My primary battery w...
by RobinGreig
Sun Jan 04, 2015 8:08 pm
Forum: HATs and other add-ons
Topic: Connecting to Gertduino via serial
Replies: 20
Views: 13829

Re: Connecting to Gertduino via serial

If it is, the problem could be explain by this. the serial output send info every n ms when n= convertion Times * 2 + 2 ms + time to send data. Your python code wait 1 second and read the line. Obviously you will fill the Rapsberry Pi serial input buffer and eventually you will loose data. The beha...
by RobinGreig
Sun Jan 04, 2015 4:20 pm
Forum: HATs and other add-ons
Topic: Connecting to Gertduino via serial
Replies: 20
Views: 13829

Re: Connecting to Gertduino via serial

Hello all and Happy New Year! Thanks to all included on this post as well as Gordon Henderson for his fine work. Because of this post, I've been able to successfully communicate with my 328 via raspi. And upload sketches via the arduino IDE on the raspi However, I've got an ongoing issue where I've ...
by RobinGreig
Wed Dec 17, 2014 9:47 pm
Forum: Advanced users
Topic: Professional Power Supply
Replies: 15
Views: 2918

Re: Professional Power Supply

For most of my Raspberry Pi circuits, I use a Wall Adapter and 6x1.5V Batteries as my backup. I've got my circuit posted at www.robingreig.ca Essentially I have my wall adapter feeding my 5V power supply through a diode, and my batteries feeding the power supply through a diode as well. Since the po...
by RobinGreig
Sun Feb 02, 2014 3:11 pm
Forum: Automation, sensing and robotics
Topic: TUTORIAL: DS18B20 temp sensor. No C or Python!!! Cost: $3.05
Replies: 81
Views: 105995

Re: TUTORIAL: DS18B20 temp sensor. No C or Python!!! Cost: $

Hi, <snip> You can improve the performance of a 1-wire system by using a device that manages the 1-wire timing in hardware and also replaces the passive pull-up resistor with an active pull-up circuit. On one of my Pi's with 11 sensors on it, I use the HA7s from Embedded Systems. http://www.embedde...
by RobinGreig
Sun Feb 02, 2014 2:48 pm
Forum: Troubleshooting
Topic: DS18B20 logging suddenly stopped
Replies: 10
Views: 1475

Re: DS18B20 logging suddenly stopped

Hello, I'm an enthusiastic user of the Pi & DS18B20's I have a setup at my office, home, and garage and have them all recording back to the mysql database in the garage Pi. You can see my recordings online at therm.hopto.org (I live by Calgary, Alberta, Canada, and the temps are Celsius). I just wan...
by RobinGreig
Wed Jul 03, 2013 9:39 pm
Forum: Troubleshooting
Topic: Looking for new SD Card holder for my PI
Replies: 2
Views: 467

Looking for new SD Card holder for my PI

Hello, Does anyone know if we can purchase spare parts for our Pi's? I'm looking for the SD card holder / receptacle. Of if anyone knows the part # and who may sell them? A heavy handed friend of mine tried to push the card out rather than pull it out and broke off the plastic edges (crazy glue didn...
by RobinGreig
Sat Mar 16, 2013 1:55 pm
Forum: Beginners
Topic: Raspi wifi setup [for WHEEZY so obsolete!]
Replies: 39
Views: 157372

Re: Raspi wifi setup

This is a very IMPORTANT step, your pi is not gonna go wifi without this.

You know your ssid, and you know the password, it will generate a large key, COPY that.
Sorry, I must have missed something,
How do I generate the large key and where do I see it?

Thanks,
Robin
by RobinGreig
Wed Mar 06, 2013 6:21 pm
Forum: Other projects
Topic: Pi on / off PSU relay switch
Replies: 34
Views: 28613

Re: Pi on / off PSU relay switch

Thanks for posting this, great information.

On a side note, what program did you use to generate the schematic?

I'd like to be able to do the same.

Thanks,
Robin

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