Project Horus High altitude balloon project


Current state of affairs

Haven't had much chance to work on the project or update the blog in the last couple of weeks due to the festive season being in full swing - aiming for a launch in a week or two though, I'll set a tentative date soon.

I was given a Sparkfun voucher for Christmas(thanks Holly! :D ), which will go down a treat. Sparkfun are selling a humidity sensor which I'm ordering for the payload - this simple analogue sensor looks really easy to use, having an almost linear output.

Sparkfuns humidity sensor breakout board

I'm also ordering an MPX4115 pressure sensor from Farnell - a (cheap) absolute pressure sensor with a range from 15kPa to 115kPa. A minimum of 15kPa means that I will only have accurate pressure data upto 45,000 feet, but I don't know of any other sensors which are capable measuring lower pressures in the same price range.

MPX4115 pressure sensor

MPX4115 pressure sensor

I purchased a piezoelectric buzzer to be used as a warning tone when the payload descends below 1 or 2km, and to help us find the payload in case it lands in trees or scrub. This little buzzer can run on anywhere from 1-13v, and draws less than 10mA at 5v. Even on a single AA battery, it's very loud!

Piezoelectric buzzer

Piezoelectric buzzer

My balloons have arrived from Kaymont also. I'm planning on doing a tethered test of telemetry & software this weekend, I'll send an email to everybody who's contacted me regarding tracking. Tethered balloons are bound by maximum altitude restrictions, so range will be limited, but hopefully we should be able to get an idea of how well everything is working.

Kaymont balloons

Kaymont balloons

Comments (4) Trackbacks (0)
  1. Pretty! This has been an extremely wonderful article. Thank you for providing
    this information.

  2. Every weekend i used to pay a visit this website,
    because i wish for enjoyment, since this this web page conations really good funny material too.

  3. Normally I do not read post on blogs, however I wish to
    say that this write-up very compelled me to take a look at and
    do it! Your writing taste has been amazed me.

    Thank you, very nice post.

  4. Well, I know that I do have my nelly streak in my from
    time to time, especially when it comes to decorating and things of that nature.

    So it is also important that to whom you giving your project to reach the Google Page One
    Ranking, you have to get all information about the company.
    What does оЃ– mean

    But in the world of our clients, time is the scarcest resource.
    ), which would also fall under the umbrella of graduate studies.

Leave a comment

No trackbacks yet.