Go to advanced search

by heileivo
Sat Mar 02, 2019 11:48 am
Forum: Other projects
Topic: Take daily photo at sunset
Replies: 7
Views: 1263

Re: Take daily photo at sunset

Hello, I have done just that - I wrote script for taking photos at sunset. I have used it to take sunset pictures since January - here's my first, raw video from collected images: 60 sunsets I wrote the script to make it easy to collect large enough dataset for images, because the image taken on exa...
by heileivo
Sun Dec 30, 2018 12:58 pm
Forum: Automation, sensing and robotics
Topic: Automate taking photos of sunrise/sunset
Replies: 0
Views: 495

Automate taking photos of sunrise/sunset

Hello, I wrote a simple python script to schedule taking photos of sunrise or sunset using raspistill. It is goddamn cloudy here right now, and I can't quite verify if it works as intended. With bad luck it may take weeks until I can catch actual sunsets. :roll: If you have a nice view to sunrise or...
by heileivo
Fri Sep 19, 2014 9:50 am
Forum: Beginners
Topic: External fan
Replies: 20
Views: 5986

Re: External fan

But, the correct answer is don't bother connecting it. That's a bad attitude, IMHO. What about blinking a led with GPIO output? How on earth Raspberry Pi would need that ? Don't bother connecting it! ;) I once attached a fan to my RPi just because it was a fun way to learn the basics of how to use ...
by heileivo
Tue Sep 16, 2014 12:28 pm
Forum: Beginners
Topic: changing sleep mode in Raspberry pi (B)
Replies: 11
Views: 3672

Re: changing sleep mode in Raspberry pi (B)

A simple circuit for shutting RPi down for sleep mode is quite easy to construct. In our robot project we needed a way to shut down the system in a controlled manner. Just in case we might need to put our robot to sleep for a while we added sleep mode to the circuit. More details including schematic...
by heileivo
Tue Aug 19, 2014 6:10 am
Forum: Automation, sensing and robotics
Topic: Where do you start to create logic like a Roomba
Replies: 8
Views: 2657

Re: Where do you start to create logic like a Roomba

This tutorial was of great help when I was developing route navigation algorithm for my robot boat . Using this approach it was quite easy to implement complex route navigation logic such as: - If current leg is not set or if the robot is near current leg end, switch to next leg in the course - If ...
by heileivo
Tue Aug 12, 2014 8:36 am
Forum: Automation, sensing and robotics
Topic: USB devices
Replies: 6
Views: 971

Re: USB devices

Thank you for feedback! Good suggestions, definitely worth of trying. The motors are powered from another battery, so at least in theory they should not interfere with RasPi. They do share common ground, though.
by heileivo
Tue Aug 12, 2014 8:11 am
Forum: Automation, sensing and robotics
Topic: USB devices
Replies: 6
Views: 971

Re: USB devices

I have not measured the power consumption. The USB hub is powered by a battery pack which should give 2.1A according to specs. RasPI is then powered through the USB hub. Maybe I should try to arrange power by some other means - I just realized there are 2 usb ports in the battery pack, so I could po...
by heileivo
Tue Aug 12, 2014 8:00 am
Forum: Automation, sensing and robotics
Topic: USB devices
Replies: 6
Views: 971

USB devices

In my robot project I have GPS receiver, wireless broadband, wifi and an USB memory stick mounted as hard disk; they are connected to a powered USB hub. My software writes logs and Raspberry Pi Camera pictures directly to the USB stick. Now the whole setup has crashed a couple of times due to i/o er...
by heileivo
Mon Aug 04, 2014 8:27 am
Forum: Automation, sensing and robotics
Topic: Project Leviathan - an automatic aquatic apparatus
Replies: 2
Views: 917

Re: Project Leviathan - an automatic aquatic apparatus

Hello Ravenous! The device is indeed an ugly duckling - we are planning to camouflage it as swan . I am also going to paint the hull some day to hide ugly details. Thanks for pointing out - I forgot to mention the motors in the hardware list! The current motors are violently ripped from a cheap toy ...
by heileivo
Sun Aug 03, 2014 5:58 pm
Forum: Automation, sensing and robotics
Topic: Project Leviathan - an automatic aquatic apparatus
Replies: 2
Views: 917

Project Leviathan - an automatic aquatic apparatus

Greetings, Raspberry Pi Forum! May I represent you our ongoing Raspberry Pi project: the Leviathan, an autonomous aquatic apparatus. http://leviathan.godigi.fi/images/hardware/20140801_172612.jpg Leviathan is a small electric boat using Raspberry Pi + GPS to navigate on lake. We have been constructi...

Go to advanced search