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by karen9434
Mon May 16, 2016 11:48 am
Forum: Beginners
Topic: Raspberry Pi3 and HX711
Replies: 19
Views: 22412

Re: Raspberry Pi3 and HX711

Could you please tell me how to calibrate and what is the unit (g, lbs??)of the values shown after running? Thanks. All my script does is read the raw data from one of the channels. If you have connected it to a weighing machine the normal calibration would be to take 50 or so readings with no weig...
by karen9434
Thu May 12, 2016 12:18 pm
Forum: Beginners
Topic: Raspberry Pi3 and HX711
Replies: 19
Views: 22412

Re: Raspberry Pi3 and HX711

I have a Python class at http://abyz.co.uk/rpi/pigpio/examples.html#Python_HX711_py Power the sensor from 3V3 (pin 1) rather than 5V. If you feed 5V into a Pi GPIO there may be problems. Could you please tell me how to calibrate and what is the unit (g, lbs??)of the values shown after running? Than...
by karen9434
Mon Nov 30, 2015 5:54 am
Forum: Troubleshooting
Topic: Clone a dmg to a new SD card
Replies: 5
Views: 1176

Re: Clone a dmg to a new SD card

Joe Schmoe wrote:What's a dmg?

Don't you mean an "iso"? (joke, joke)
I follow this website, and I am using mac to clone the sd card
http://computers.tutsplus.com/articles/ ... -mac-59911
by karen9434
Sat Nov 28, 2015 11:02 am
Forum: Troubleshooting
Topic: Clone a dmg to a new SD card
Replies: 5
Views: 1176

Clone a dmg to a new SD card

I have 2 raspberry pi, where 1 has an SD card full of projects, while another 1 has an empty SD card. I clone a dmg from the SD card full of projects (for around 4 hours to finish the process), then I clone the dmg file to the empty SD card (for around 2 hours to finish the process). However, when u...
by karen9434
Thu Nov 26, 2015 1:42 am
Forum: Automation, sensing and robotics
Topic: Install Supervisor Problems
Replies: 3
Views: 8269

Re: Install Supervisor Problems

You did use 'sudo' when trying to edit the conf file? What does the command 'ls -la /etc/supervisor/supervisord.conf' output? Can supervisorctl ('sudo supervisorctl') connect to the running instance? This is the captured image. https://drive.google.com/file/d/0B0RBDDwNoauCNlJfdllGRVNqeGM/view?usp=s...
by karen9434
Wed Nov 25, 2015 4:02 pm
Forum: Automation, sensing and robotics
Topic: Install Supervisor Problems
Replies: 3
Views: 8269

Install Supervisor Problems

I am now installing Supervisor into my pi. After sudo apt-get install supervisor i cannot sudo service supervisor restart it shows Fail to restart supervisor.service: Access denied Even I edit or remove /etc/supervisor/supervisord.conf, but it is access denied. I want to change the permission, but a...
by karen9434
Wed Nov 25, 2015 3:45 pm
Forum: Automation, sensing and robotics
Topic: How to auto run python programs when pi starts?
Replies: 1
Views: 470

How to auto run python programs when pi starts?

Hello, I am now working on an IoT project that pi reads a few sensors data and uploads them into webserver. I would like to know is there any methods that can auto run all the sensors python programs when pi starts? I have been trying Supervisor, but there are many errors that I cannot even have the...
by karen9434
Tue Nov 24, 2015 12:06 pm
Forum: Other projects
Topic: How to put the sensor data to the web server?
Replies: 1
Views: 751

How to put the sensor data to the web server?

Hello, I am now working on an IoT project, pi checks the sensor data and upload to my web server, then display the data in a website in real-time. Now I have done the followings: - python program to read data from sensors - the php website and mysql written in my own pc and uploaded and hosted to a ...

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