Contents
#########
My network:
  Twitter
  Ribbonfarm section
  Youtube channel
  Facebook
  Instagram
  Github
  Livejournal (rus)
 Spaceway forum
 Spaceway
 
Writing:
 Random thoughts
 Random stories
Hardware:
 Sound camera (RF)
 Timelapse camera
 MicroBook reader
 Multiband camera
 Multiband camera (RF)
 Tesla coils
 Soviet calculator
 3D printer
 Quadrotor UAV
 Box of sunshine
 Molten salt battery
 LCD curtains
Software:
 Aprom OS
 METEOR M decoder
 Spaceway
 M.A.X. Remake
 Rocket Land
 Random games
Artwork & photo:
 Time lapses
 Concepts - Rhego
 Concepts - Pella
 Random Art
 Lunar eclipse
Orbiter addons:
 Collision SDK
 Orbiter Shipyard
 Shukra Station
 OGLAClient
 Orulex
 OSH gallery
 Shukra gallery
 Orulex gallery
 OGLAClient gallery
 Ship Generator
 Shipgen manual
 Orbiter flight gallery
     
Time lapse camera
Blog
-> Description and download
Radio controlled version


   19.12.2014 - Open-source one year time lapse camera

Sensor: 640x480 UART camera module.
Sample video: http://www.youtube.com/watch?v=aYzQma_5TN0.
RTC (DS1338) included, with CR2032 battery backup.
Stores images on a microSD card, which also holds the config file.
Power is supplied from 4.8+ V, over a 3.3V LDO, so 4 alkalines is ideal. I thought of using a switching regulator to increase efficiency, but it just isn't worth it on this scale - at best you can get 20% increase in run time.

One frame takes:
3 seconds at 100mA for the camera to stabilize and get a picture.
7 seconds at 60mA to write the picture down.
Between frames it stays in deep sleep, consuming 91 uA.
In other words, it uses 3.5-4 joules per picture.

On 4 D cells that would be around 50000 frames - at one frame every 10 minutes it will run for a year, at one per minute - for a month.
The intent is to set it and leave it be, coming back once a year - i like making long time lapse videos.

You can get the schematics and layout here:
http://orbides.org/tlc/camera_141219.zip (Eagle)
http://orbides.org/tlc/camera_sch.png (Image)

Current firmware and MicroSD bootloader:
http://orbides.org/tlc/camera_fw_150219.zip

Appearance of the naked device itself below.
I'm still thinking on what sort of an enclosure to make for it. 3D printing is not going to cut it here. :)

camera_img_1935

 


camera_img_1934

 


camera_img_1933

 



Post/read comments

 

  
  ADSE 0.9.2   © 2005-2017,