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    Time lapse camera
    -> Description and download
    Radio controlled version

  • 19.12.2014 - Open-source one year time lapse camera

    Sensor: 640x480 UART camera module.
    Sample video:
    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: (Eagle) (Image)

    Current firmware and MicroSD bootloader:

    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. :)







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