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by Roaders
Tue Jul 14, 2020 4:29 am
Forum: General discussion
Topic: How to automatically deal with usb drives added and removed
Replies: 7
Views: 266

Re: How to automatically deal with usb drives added and removed

Yes, I am considering an led or e-ink display or something similar.
by Roaders
Mon Jul 13, 2020 3:56 pm
Forum: General discussion
Topic: How to automatically deal with usb drives added and removed
Replies: 7
Views: 266

Re: How to automatically deal with usb drives added and removed

Thanks for the replies. Just to clarify when you say "you might get away with it", what is the worst that can happen if I don't get away with it? At the end of the copy process all files will be deleted so I can't see what could be corrupted. I'll implement unmounting, hopefully won't be too much of...
by Roaders
Mon Jul 13, 2020 2:55 pm
Forum: General discussion
Topic: How to automatically deal with usb drives added and removed
Replies: 7
Views: 266

How to automatically deal with usb drives added and removed

Hi All I want to setup a raspberry pi that I can leave powered on long term in my garage. I want to plug in usb drives and have the contents automatically moved to network storage. Reading the external storage documentation it seems that I need to setup each usb drive that I want to use ahead of tim...
by Roaders
Sun May 24, 2020 4:20 am
Forum: General discussion
Topic: Dangers of exposing port 80
Replies: 9
Views: 516

Dangers of exposing port 80

Hi All I am just going through the learning process of setting up secure certificates for my raspberry pi. I've got it all working and I've not got a secure password protected website to control things at home when I am away. I am using certbot and letsencrypt for the certificate and for this I need...
by Roaders
Thu May 21, 2020 12:45 pm
Forum: General discussion
Topic: An easier way to find your Pis on your network
Replies: 0
Views: 115

An easier way to find your Pis on your network

Hi All At some point in the future I am planning on having a raspberry pi zero in every light switch in my house. That's going to be a lot of names and IP addresses to keep track of. I wrote an npm script that will make it super easy to find all the IP addresses of the raspberry Pis on your network....
by Roaders
Mon May 11, 2020 6:14 am
Forum: Automation, sensing and robotics
Topic: Can only read state of pin 7. Is it special?
Replies: 2
Views: 217

Re: Can only read state of pin 7. Is it special?

OK, yes I was being stupid. Earthing pin 7 transitioned it from high to low. Earthing pin 13 (which is already low) had no effect.

Connecting pin 13 to 3v makes it high so figured that one out. Thanks for the help.
by Roaders
Sat May 09, 2020 12:09 pm
Forum: Automation, sensing and robotics
Topic: Can only read state of pin 7. Is it special?
Replies: 2
Views: 217

Can only read state of pin 7. Is it special?

Hi All I am using this node package: https://github.com/JamesBarwell/rpi-gpio.js to read the state of the gpio pins. I have got it working using pin 7 fine (the pin that all the examples use) but I can't seem to get it to work with any other pins. I have tried pin 11 and 13 also. Is there something ...
by Roaders
Sat Jun 25, 2016 3:58 pm
Forum: Advanced users
Topic: Cannot connect to DS18B20 from console
Replies: 2
Views: 608

Re: Cannot connect to DS18B20 from console

ok... I solved it...

There's a difference between a 4.7K and a 4.7M resistor... :oops:

I did know this, I did electronics at school. I just misread the label...
by Roaders
Sat Jun 25, 2016 1:42 pm
Forum: Advanced users
Topic: Cannot connect to DS18B20 from console
Replies: 2
Views: 608

Cannot connect to DS18B20 from console

Hi I followed this tutorial to get a temperature sensor connected to my pi: https://learn.adafruit.com/adafruits-raspberry-pi-lesson-11-ds18b20-temperature-sensing/ds18b20 I am pretty sure that I followed it correctly and that I have it all wired up right but I am not seeing the sensor listed when I...
by Roaders
Fri Jun 24, 2016 6:58 am
Forum: Astro Pi
Topic: Sense Hat Rubbish temperature accuracy
Replies: 7
Views: 12731

Sense Hat Rubbish temperature accuracy

I've just got my Sense HAT after waiting about 2 months for it to be delivered from china and am VERY disappointing with the temperature accuracy. I think that it is probably reading temperature at around 10 degrees too high.

What a waste of time and money...
by Roaders
Fri Jun 17, 2016 6:31 pm
Forum: Troubleshooting
Topic: How to diagnose Pi becoming unresponsive after several days
Replies: 8
Views: 4120

Re: How to diagnose Pi becoming unresponsive after several d

This is on a WiFi network.

I can't ping it when it becomes unresponsive.

The rest of the network is fine, I can still ping my other Pi (also on WiFi).

I am very new to linux so pretty green when it comes to this technology.
by Roaders
Tue Jun 14, 2016 8:35 pm
Forum: Troubleshooting
Topic: How to diagnose Pi becoming unresponsive after several days
Replies: 8
Views: 4120

Re: How to diagnose Pi becoming unresponsive after several d

Thanks for the suggestion. On looking at syslog.1 I can't see anything untoward. There seems to just be a series of hourly cron jobs logged before the logs when I rebooted it.
by Roaders
Tue Jun 14, 2016 7:39 pm
Forum: Troubleshooting
Topic: How to diagnose Pi becoming unresponsive after several days
Replies: 8
Views: 4120

How to diagnose Pi becoming unresponsive after several days

Hi All I have a headless Raspberry Pi 3 that I can't connect a monitor or keyboard to. After a few days it becomes unresponsive and I can't SSH into it. The only thing that I can do is turn it off and back on again but when it starts up there is no way of telling what caused it to freeze. What can I...

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