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by jimjulian
Sun Jun 24, 2018 10:25 pm
Forum: General discussion
Topic: multiple ADS1115s and Python
Replies: 5
Views: 191

Re: multiple ADS1115s and Python

You're contradicting your last post. This is moot. I have reason to suspect the unit is damaged. The chip, no doubt, has addressinig pins. The accessibility of these is dependent on the manufacturer's design of the breakout module. For example, the address of the PCF8591 commonly available on eBay i...
by jimjulian
Sun Jun 24, 2018 8:38 pm
Forum: General discussion
Topic: multiple ADS1115s and Python
Replies: 5
Views: 191

Re: multiple ADS1115s and Python

I've been trying that. I get the same errors I get when the ADS1115 is connected to a different address termination than the script specifies. I have a PCF8591 at 0x48 and ADS1115 at 0x49. The PCF8591 software runs without issue, but the Adafruit ADS1x15 software crashes. The method mentioned seems ...
by jimjulian
Sun Jun 24, 2018 4:46 pm
Forum: General discussion
Topic: multiple ADS1115s and Python
Replies: 5
Views: 191

multiple ADS1115s and Python

I have several ADS1115s I need to address from a python script. I've been using the Adafruit library which works for a single breakout board. I have not been able to determine if there is a method to select which ADS1115 I want to address. The Adafruit setup includes a "ADS1x15.py" script that sets ...
by jimjulian
Sat Jun 09, 2018 6:58 pm
Forum: General discussion
Topic: STICKY: Introduce yourself!
Replies: 3368
Views: 653611

Re: STICKY: Introduce yourself!

Hello, My name is Jim Julian (one of many). I have a degree in Psychology and minored in Electronic Engineering. I've been 'playing' with computers for over thirty years. I learned digital cartography from the ESRI Arcviiew 3.2 GIS program suite and the Matlab mathematics laboratory in the mid-2000s...
by jimjulian
Wed Jun 06, 2018 6:42 pm
Forum: General discussion
Topic: RPi3B -> RPi3B+ SD plugin replacement?
Replies: 1
Views: 112

RPi3B -> RPi3B+ SD plugin replacement?

Hello, I just received a Raspberry Pi 3B+. Prior to this, I had been using a 3B. I have an SD card I have programmed for use with a solar panel array and linear actuator. I removed the SD card from the 3B and inserted the card into the 3B+. Everything seems to work normally, so far, except the wifi ...
by jimjulian
Tue May 22, 2018 1:02 am
Forum: Troubleshooting
Topic: induction problem gpio relay load
Replies: 38
Views: 4856

Re: induction problem gpio relay load

Hello,

I noticed the relay board you use does not have an optoisolator chip. That chip keeps the relay circuit separate from the driver circuit.
Buy a board that has the 4-pin opto chip. You're probably getting feedback from the relay circuit into the driver circuit.
by jimjulian
Wed Nov 16, 2016 3:43 pm
Forum: Beginners
Topic: i2c pin availability
Replies: 9
Views: 1172

Re: i2c pin availability

I'm using the RPi 3B as a solar array monitor/controller. This requires that I uses several i2c devices. The issue is only one device can be connected to the RPi. This is a hardware problem. Has anyone found a suitable work around, other than the use of solder and wires? Is there a mechanical faste...
by jimjulian
Sat Nov 12, 2016 6:15 pm
Forum: Beginners
Topic: i2c pin availability
Replies: 9
Views: 1172

i2c pin availability

Hello, I'm using the RPi 3B as a solar array monitor/controller. This requires that I uses several i2c devices. The issue is only one device can be connected to the RPi. This is a hardware problem. Has anyone found a suitable work around, other than the use of solder and wires? Is there a mechanical...
by jimjulian
Wed Oct 19, 2016 4:28 pm
Forum: Advanced users
Topic: truly wireless remote RPi
Replies: 24
Views: 2817

Re: truly wireless remote RPi

There is no rule which states that a WiFi hotspot must be connected to the Internet. Just turn the Pi into a hotspot itself asn SSH into it from your laptop. ghans Thanks ghans. That's what I had in mind but I wanted to see if anyone had done that and if there were any preparations required. Have y...
by jimjulian
Wed Oct 19, 2016 4:25 pm
Forum: Advanced users
Topic: truly wireless remote RPi
Replies: 24
Views: 2817

Re: truly wireless remote RPi

stderr wrote:
jimjulian wrote: I'm looking for a laptop-to-RPi commuinications approach.
Perhaps I should have mentioned, a cost effective solution is required.
Isn't wifi free?
You misread, if at all. Reread and then post.
by jimjulian
Mon Oct 17, 2016 5:30 pm
Forum: Advanced users
Topic: truly wireless remote RPi
Replies: 24
Views: 2817

Re: truly wireless remote RPi

Hello, The Hotspot modems require a cellular account and cost money. I could turn my iPhone into a hotspot as far as that goes. I sometimes do when my Internet provider is down or I'm away from home. I use my phone to connect my laptop to the web. I'm looking for a laptop-to-RPi commuinications appr...
by jimjulian
Fri Oct 14, 2016 4:31 pm
Forum: Advanced users
Topic: truly wireless remote RPi
Replies: 24
Views: 2817

Re: truly wireless remote RPi

Well, why not use a set of DLAN (PowerLAN) adapters? One unit is mounted next to your solar panel array, the other one is in your house. Under UK regulations, that is not allowed. There must be NO current using equipment (only the inverter) on the solar power circuit. I can't speak for regulations ...
by jimjulian
Fri Oct 14, 2016 4:27 pm
Forum: Advanced users
Topic: truly wireless remote RPi
Replies: 24
Views: 2817

Re: truly wireless remote RPi

Hello, Thank you for all of your responses. I'm just now reading them. I want to do some clarification. My RPi has on board wifi, since I'm using a 3B. I have the Pi set upp for wifi. I'm thinking that setting up as a wifi access point may solve the problem. After that I could use the Pi as a wifi h...
by jimjulian
Mon Sep 26, 2016 7:57 pm
Forum: Advanced users
Topic: truly wireless remote RPi
Replies: 24
Views: 2817

Re: truly wireless remote RPi

Thank you. I can do all that. What I need is to communicate with the RPi with nothing but a power cable attached to the RPi.
by jimjulian
Mon Sep 26, 2016 3:08 pm
Forum: Advanced users
Topic: truly wireless remote RPi
Replies: 24
Views: 2817

truly wireless remote RPi

Hello, I have a RPi 3B and an using the RPi as a controller and monitor for a solar panel array. Currently, the only methods I have to use the RPi involve a wired connection to my laptop or to a router. I'm searching for a way to communicate with the RPi with my laptop and with the RPi mounted on th...
by jimjulian
Sun Sep 18, 2016 8:14 pm
Forum: Advanced users
Topic: file i/o in www/html with a php browser script
Replies: 1
Views: 316

file i/o in www/html with a php browser script

Hello, I'm retrieving data from a device uart using modbus communications protocol over an RS485 line. I have a series of scripts that do that. One creates a text file and writes data to the file, then closes. The script is in an infinite loop and will repeat the process indefinately, creating only ...
by jimjulian
Sun Sep 18, 2016 5:48 pm
Forum: Advanced users
Topic: Linux kernel source installer
Replies: 8
Views: 9073

Re: Linux kernel source installer

When you run the program, you get the following message :

ERROR:
gcc version check: mismatch between gcc (4.9.2) and /proc/version (4.7.1)
Skip this check with --skip-gcc

I would suggest adding the mentioned flag to bypass the check and then try.

Hope this helps.
by jimjulian
Fri Aug 26, 2016 4:09 pm
Forum: Raspbian
Topic: Raspbian Jessie (64bit) for RPi3?
Replies: 145
Views: 125025

Re: Raspbian Jessie (64bit) for RPi3?

Hello,

This begs the question:
Can I run 64-bit programs or install packages like libnih-dbus1_1.0.3-4.3_arm64.deb from the Debian site?

Thank you,
Jim Julian
by jimjulian
Mon Aug 01, 2016 4:37 pm
Forum: Windows 10 for IoT
Topic: speech control from Windows for Raspberry Pi
Replies: 0
Views: 442

speech control from Windows for Raspberry Pi

Hello,
Is there a way for Raspberry Pi's Win IoT software to communicate with a laptop running Windows 10 ?
I'd like to use Dragon speech recognition software for Windows to control relays and ADC boards attached to the Raspberry Pi.

Thank you,
Jim Jluian
by jimjulian
Mon Jul 25, 2016 3:26 pm
Forum: Python
Topic: i2c_tools documentation
Replies: 7
Views: 2829

Re: i2c_tools documentation

Hello, Perhaps more of a rejoinder rather than a reply; the only command from i2ctools that I've ever seen used is the, almost, ubiquitous "i2cdetect -y 1". I've often wondered if there was a pdf or website with more on the capabilities of the tool. Is i2ctools a "one trick pony"? Thank you, Jim J.
by jimjulian
Thu Jul 14, 2016 2:27 pm
Forum: General discussion
Topic: Siri: Open my garage door..
Replies: 219
Views: 279944

Re: Siri: Open my garage door..

Hello,

The year is 2016. Does the Siri Proxy still work?

Thank you,
Jim Julian
by jimjulian
Wed Jul 06, 2016 6:54 pm
Forum: Troubleshooting
Topic: 64gb SD card with corrupt raspbian
Replies: 10
Views: 3295

64gb SD card with corrupt raspbian

I got my RPi a few months ago and used a 16gb Sandisk micro SD card to install the o/s. After a few weeks, I decided to download a larger and faster SD card to use. Time after time, I've tried to install the o/s on the 64gb card and failed. Today, I got a clue as to why. I examined the cmdline.txt f...
by jimjulian
Thu Jun 16, 2016 8:56 pm
Forum: C/C++
Topic: color.h in gcc
Replies: 6
Views: 960

Re: color.h in gcc

Thanks, I worked with Radiance back in the day. I should be able to do this.

Thanks again.
by jimjulian
Thu Jun 16, 2016 11:50 am
Forum: C/C++
Topic: color.h in gcc
Replies: 6
Views: 960

Re: color.h in gcc

I tried your code but got the following instead.

sudo: apt-file: command not found
by jimjulian
Thu Jun 16, 2016 11:42 am
Forum: C/C++
Topic: color.h in gcc
Replies: 6
Views: 960

Re: color.h in gcc

The program is a python code called sunpath that uses a compiled binary called gensky.c. There is a binary that comes with the package but was compiled for Mac OsX. Icould possibly find a color.h for a Mac but I would have to rest by trial and error for compatibility. I do not believe gcc has native...

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