Home Forums Software Ramp Soak and stuff

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  • Brett
    Keymaster
    Post count: 101

    The firmware is coming along nicely. I’d say profile functionality should be available within a week. Here’s a little teaser: https://twitter.com/#!/rocketscream/status/188990752435617792/photo/1

    dchris01
    Participant
    Post count: 17

    @Brett wrote:

    The firmware is coming along nicely. I’d say profile functionality should be available within a week. Here’s a little teaser: https://twitter.com/#!/rocketscream/status/188990752435617792/photo/1

    Good news. Just ordered mine today for using on my homemade IR rework station. Hopefully when it comes all firmware for reflowing will be out.

    Maddox
    Participant
    Post count: 13

    Profile is looking good…my new osPID & toaster oven is ready to start reflowing as soon as the new firmware is ready!

    ControlFreak
    Participant
    Post count: 7

    that looks pretty cool Brett, well done!
    did you find it harder to tune with profiling?

    ControlFreak

    Brett
    Keymaster
    Post count: 101

    did you find it harder to tune with profiling?

    operating at different temperatures does make it more difficult to tune. often you’re left with a situation where you there simply isn’t a perfect set of tuning parameters, just based on the nature of the system. everyone’s mileage will certainly vary, depending on the equipment they use.

    KC6QHP
    Participant
    Post count: 4

    I’m also eagerly awaiting this update. I’m looking at using the osPID for reflow oven control.

    Tony

    Brett
    Keymaster
    Post count: 101

    I’m also eagerly awaiting this update

    the wait is over! new firmware went up today.
    http://www.ospid.com/blog/the-long-awaited-firmware-update/

    Maddox
    Participant
    Post count: 13

    Thanks for all the hard work…now to start playing with reflowing!

    ControlFreak
    Participant
    Post count: 7

    Yeah thanks for all the hard work Brett, I’m looking forward to downloading this new firmware and frontend and having a play.

    Controlfreak

    deejay1272
    Participant
    Post count: 20

    @Brett wrote:

    I’m currently working on making a SP profile generator for the front-end, but currently all you can do is hard-change the setpoint.

    Hi Brett,

    I’m in the process of rummaging around in the source code to create my own setpoint profile to 1) heat an espresso machine boiler tank from cold to full brew temp (~100*C) and 2) maintain that brew temp in steady state.

    Before I dig any deeper, I’m wondering about this profile generator that you mention above. Is this planned as a release some time soon? Thanks for any update you can share with us.

    In the mean-time I’ll continue to slog through the code in hopes of piecing together a clever profile.

    It’s all good fun if you ask me!

    Thx,
    Dan

    Cracked
    Participant
    Post count: 44

    The current firmware has ramp/soak functionality.

    deejay1272
    Participant
    Post count: 20

    I’m having fun making profiles on my own now.

    One suggestion: It would be great to have the ability to choose from one of several pre-loaded temperature profiles from the on-board interface. I may try to implement this myself. If I’m successful, I’ll share whatever it is that I come up with.

    Brett
    Keymaster
    Post count: 101

    originally the plan was to allow multiple profiles on the unit, but we started running into ram issues (the profile info is all stored in arrays)

    Cracked
    Participant
    Post count: 44

    Is the profile stored as a lot of setpoints at some small increment of time, or as a slope between time points (or otherwise)?

    Having the option to specify a ramp rate and a ramp duration (i.e. as distint from a setpoint temperature and ramp duration) would be a nice to have.

    Brett
    Keymaster
    Post count: 101

    Having the option to specify a ramp rate and a ramp duration (i.e. as distint from a setpoint temperature and ramp duration) would be a nice to have.

    this is essentially how it’s done. you specify the target temperature and how long you want it to take to get there. that’s what gets stored on the unit. it then calculates at runtime what the setpoint should be. take a look at this thread. the values stored on the unit are the same as the values in the profile file.

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