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by rickseiden
Sat Oct 29, 2016 5:35 pm
Forum: Advanced users
Topic: Power down circuit
Replies: 0
Views: 406

Power down circuit

I need a circuit that I can use to power down the RPi correctly. I'd like to be able to press a button, and that will turn on the RPi, then press the same button, and have it issue a shutdown command, allow it to go through the proper shutdown, and then power off the unit. I've found this in my sear...
by rickseiden
Wed Sep 21, 2016 11:22 am
Forum: Advanced users
Topic: RTC over I2C with DAC on SPI
Replies: 6
Views: 1184

Re: RTC over I2C with DAC on SPI

All 3 devices have the same common? There's only two devices. The RTC and the DAC. The only thing they share in common is VCC and GROUND. By 3 devices I mean the raspberry pi (1), the RTC (2) and the DAC (3) and by common I mean ground. Sorry. Re-reading your question, it's obvious what you were as...
by rickseiden
Tue Sep 20, 2016 11:15 am
Forum: Advanced users
Topic: RTC over I2C with DAC on SPI
Replies: 6
Views: 1184

Re: RTC over I2C with DAC on SPI

SpiraMirabilis wrote:All 3 devices have the same common?
There's only two devices. The RTC and the DAC. The only thing they share in common is VCC and GROUND.
by rickseiden
Sat Sep 17, 2016 5:17 pm
Forum: Advanced users
Topic: RTC over I2C with DAC on SPI
Replies: 6
Views: 1184

Re: RTC over I2C with DAC on SPI

joan wrote:I don't see why there should be any interaction between I2C and SPI.
That's what I thought. They work off different pins and shouldn't interfere with each other. But it's definitely that the SPI won't work when the I2C is running.
by rickseiden
Sat Sep 17, 2016 2:55 pm
Forum: Advanced users
Topic: RTC over I2C with DAC on SPI
Replies: 6
Views: 1184

RTC over I2C with DAC on SPI

Wow! Acronyms much? I have my Pi 3 setup to run a real time clock over I2C. That works great. I want to add a digital to analog converter over SPI. The problem I'm having is that if I take off the RTC and rebook, the DAC works just fine, but if I put the RTC back in place, and then reboot again, the...
by rickseiden
Sun Jun 12, 2016 10:23 pm
Forum: Other projects
Topic: Soft Power Switch
Replies: 4
Views: 1678

Soft Power Switch

Hello, This has to have been solved before, but I can't find it via google or searching on this board. I want to run a pi off a LiPo battery, but when the pi is off, I don't want it draining the battery. I'm looking for a configuration that allows for the following: 1) when the pi is off, no power i...
by rickseiden
Sat May 28, 2016 11:10 pm
Forum: Python
Topic: Looking for keypad library with hold down function
Replies: 0
Views: 671

Looking for keypad library with hold down function

Hello, I'm looking for a Python library I can use to drive a standard matrix keypad (4x4) that includes interrupts for key down, key held down and key up. I've been using pad4pi as a starting point, but it only handles key down. I managed to add key up to it, but it only triggers the key up if the k...
by rickseiden
Mon May 09, 2016 12:53 am
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: RPiB to RPi3B not working [SOLVED]
Replies: 3
Views: 707

Re: RPiB to RPi3B not working

It's kind of what you were talking about, but not exactly. My Pi is so old that pin 3 is mapped to GPIO 0 and pin 5 is mapped to GPIO 1. On the new Pi, they are GPIO 2 and GPIO 3 respectively. Once I adjusted the code to "compensate" for that, the code worked just fine. Thanks for your help. Pointin...
by rickseiden
Sun May 08, 2016 1:49 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: RPiB to RPi3B not working [SOLVED]
Replies: 3
Views: 707

Re: RPiB to RPi3B not working

I thought the first 26 pins stayed the same for backwards compatibility! I'm not using Pin 13 (BMC 21) so that can't be it. I'm not using I2C, so that can't be it. How do I tell the system which RPi I'm using? I'm going to try double checking the wiring based on the link you gave and see if anything...
by rickseiden
Sat May 07, 2016 8:30 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: RPiB to RPi3B not working [SOLVED]
Replies: 3
Views: 707

RPiB to RPi3B not working [SOLVED]

I have an old RPi Model B. Not RPi2 Model B, but the original Model B. I have created a brand new installation of Raspbian Lite, installed the python RPLCD library on it, and wrote a simple little test script to display "Hello World!" on my LCD. It works great. No problems. Wonderful. I just bought ...
by rickseiden
Thu May 14, 2015 5:16 pm
Forum: HATs and other add-ons
Topic: ATtiny85 with Arduino IDE and Gertboard [SOLVED]
Replies: 10
Views: 8151

Re: ATtiny85 with Arduino IDE and Gertboard [SOLVED]

Actually I don't have a gertboard, I basically wanted to use arduino uno as isp and then program attiny on Raspberry pi 2 You're in unexplored territory here, I think. But if you're talking about running the Arduino IDE on the Raspberry Pi, and using the Arduino Uno as a programmer to program the A...
by rickseiden
Wed May 13, 2015 8:05 pm
Forum: HATs and other add-ons
Topic: ATtiny85 with Arduino IDE and Gertboard [SOLVED]
Replies: 10
Views: 8151

Re: ATtiny85 with Arduino IDE and Gertboard [SOLVED]

Unfortunately I was not able to find Raspberry pi gpio in the programmer list, I guess I have not followed the steps properly :( You have to go through the steps that Gordon gives on getting the Raspberry Pi to run the Arduino IDE with the Girtboard. The instructions are linked at the end of the se...
by rickseiden
Wed May 13, 2015 2:27 pm
Forum: HATs and other add-ons
Topic: ATtiny85 with Arduino IDE and Gertboard [SOLVED]
Replies: 10
Views: 8151

Re: ATtiny85 with Arduino IDE and Gertboard [SOLVED]

i am getting this error while uploading the sketch Blink.cpp:10:21: fatal error: Arduino.h: No such file or directory compilation terminated. please help thanks in advance pranav It's been a long time since I looked at this. It looks like you're getting this error because it can't find the Arduino....
by rickseiden
Mon Jun 23, 2014 11:42 am
Forum: Troubleshooting
Topic: i2c troubleshooting
Replies: 17
Views: 3116

Re: i2c troubleshooting

What connections have you made between the Pi and the MPU6050? A photo might be useful. I have connected the GND --> Pin 6 (GND) VCC--> pin 1 (3.3V) SDA --> pin 3 (SDA0) SCL --> pin 5 (SCL0) [img][IMG]http://i60.tinypic.com/30c6fxz.jpg[/img][/img] this is what happens when i input the commands.. no...
by rickseiden
Sun Jun 22, 2014 10:59 pm
Forum: Troubleshooting
Topic: i2c troubleshooting
Replies: 17
Views: 3116

Re: i2c troubleshooting

When i check the list of modules it shows that i2c-tools is available, but when i type 'sudo i2cdetect -y 1' i dont see anything happening. I have configured the blacklist file and added i2c-dev where necessary. Also when i connect the MPU 6050 i can see the light blink but again when i type the ab...
by rickseiden
Tue Jun 03, 2014 8:14 pm
Forum: General discussion
Topic: DIP IC Anti-static sleeves
Replies: 6
Views: 1180

Re: DIP IC Anti-static sleeves

Thanks to the various names people have used in this post, and in the links from this post, I've actually found them at my go-to components shop . I had searched there before, but hadn't been using the right search terms, so I never found them. The correct terms for find them were "IC Storage Tubes....
by rickseiden
Tue Jun 03, 2014 5:38 pm
Forum: General discussion
Topic: DIP IC Anti-static sleeves
Replies: 6
Views: 1180

Re: DIP IC Anti-static sleeves

Could have sworn I said "I've tried searching google for them, and just can't find them."

I can't find places for the individual person to purchase them without paying much too much for them.
by rickseiden
Tue Jun 03, 2014 4:40 pm
Forum: General discussion
Topic: DIP IC Anti-static sleeves
Replies: 6
Views: 1180

Re: DIP IC Anti-static sleeves

Hi Rick, Does anyone know where I can buy empty DIP IC Anti-static sleeves? DIP 300: http://www.newark.com/multicomp/030-0009/ic-tube-0-3-dip-76mm-pk-5/dp/87P0213 DIP 600: http://www.newark.com/multicomp/030-0012/ic-tube-0-6-dip-280mm-pk-5/dp/51R7868 Related items and accessories: http://www.newark...
by rickseiden
Tue Jun 03, 2014 3:57 pm
Forum: General discussion
Topic: DIP IC Anti-static sleeves
Replies: 6
Views: 1180

DIP IC Anti-static sleeves

Does anyone know where I can buy empty DIP IC Anti-static sleeves? You know. Those U shaped plastic tubes that protect chips. I've tried searching google for them, and just can't find them.

Thanks
Rick
by rickseiden
Fri May 09, 2014 2:49 am
Forum: HATs and other add-ons
Topic: ATtiny85 with Arduino IDE and Gertboard [SOLVED]
Replies: 10
Views: 8151

Re: ATtiny85 with Arduino IDE and Gertboard

I figured it out, and it was relatively easy. As a starting point, I'm going to assume that you have followed Gordon's instructions on getting the Arduino IDE running with the ATmega 328 on the Gertboard. You can find those instructions here . Next, I'm going to turn to an Instructable to start hook...
by rickseiden
Wed May 07, 2014 9:13 pm
Forum: HATs and other add-ons
Topic: ATtiny85 with Arduino IDE and Gertboard [SOLVED]
Replies: 10
Views: 8151

ATtiny85 with Arduino IDE and Gertboard [SOLVED]

I see a few ways to program the ATtiny85 with the RPi directly, but what I've found doesn't allow you to use the Arduino IDE to do the programming/uploading, like you can with the ATmega328 on the Gertboard. Can someone point me in the direction of information on how to configure the Arduino IDE and...
by rickseiden
Sun Apr 20, 2014 1:15 pm
Forum: General discussion
Topic: Using a rotary dip switch to set a value, GPIO
Replies: 7
Views: 2673

Re: Using a rotary dip switch to set a value, GPIO

According to the datasheet they link to on that page, it has 5 pins. I would assume that one would be power, and the others would be for powers of 2 to give you the set number in binary output. So, you apply 3v3 to one of the pins, and if the number set is 7, pins 0, 1, 2 would be high, and pin 3 wo...
by rickseiden
Wed Feb 26, 2014 5:21 pm
Forum: General discussion
Topic: rpi memory
Replies: 10
Views: 3818

Re: rpi memory

If your card says it's 8GB on the outside, but shows what you returned, you probably haven't expanded the filesystem. You'll need to run raspi-config and select the expand root fs option.

Rick
by rickseiden
Wed Feb 26, 2014 11:45 am
Forum: General discussion
Topic: Is There a Recommended 3G Dongle?
Replies: 2
Views: 1166

Re: Is There a Recommended 3G Dongle?

Don't think you could call any one "recommended," but the wiki has an article on it.
by rickseiden
Sun Jan 05, 2014 5:14 pm
Forum: General discussion
Topic: Number of Rev1 boards in the wild
Replies: 23
Views: 7730

Re: Number of Rev1 boards in the wild

I have several early boards including ones with USB polyfuses and ones with zero ohm resistors. None have been modified. The only version I don't have is a 256MB Rev. 2 board. Those are, I suspect--other than boards from the first 10K made--the rarest Pis out there. I thought Rev2, by definition, h...

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