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    Graphic equalizer

    This is a bit off-topic, but are you saying that a sound could be damaging a persons hearing even though it isn't discomforting, i.e. when listening to music and he/she increases the volume?  Note that I don't mean physical discomfort, like if the volume is so loud that the inner ears hurt, but...
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    Graphic equalizer

    Thanks alot.  I will take a look at that project later on today.  But a quick question.  What is the difference between a person without hearing impairment hearing a loud sound, and a person with hearing impairment and a hearing-aid hearing the same loud sound?  In my head I would think that the...
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    Graphic equalizer

    Hello. I'm on the lookout for some kind of graphic equalizer solution for use in a home-made hearing aid.  My plan is to measure the hearing impairment and set up an audiogram (http://en.wikipedia.org/wiki/Audiogram), and make a combined equalizer/amplifier to neutralize the impairment.  But...
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    Potentiometer link to linear actuator (update)

    No, I don't think that would be a problem.  What's the input on the actuator?  If it's just voltage for instance, it's just "plug'n play", more or less. :)  As long as both parts, both the controller (potentiometer) and the actuator, are linear, you just need some way of converting the...
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    Brewing heater interface

    Well, it seems to me that you've got it figured out pretty much by yourself. ;) Using a Pt100 element on an A/D input on the microcontroller would give you a fairly alright way to monitor the temperature.  Then you could program the microcontroller to sample the temperature as often as you...
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    GSM signal sensor

    Ah, this is excellent! ;D  That's exactly what I was looking for!  Thanks a bunch!
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    GSM signal sensor

    I want to try to design a circuit to mute/pause my Ipod when my cell phone is either ringing og recieves an SMS.  I have a fairly good idea of how to achieve the muting/pausing of the Ipod.  But I'm at a loss on how to detect the GSM signal.  Can anyone help me with this? Just to specify:  I'm...
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    Circuit simulation and PCB design software

    Thanks for the respons! Yes, you're right about the whole functionality vs. complexity ordeal.  But I think I'll request a trial version, and check it out. But what program do you use for designing PCB for your various simulated circuits?  And is it easy to use in combination with Orcad...
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    Distance beeper

    How about just using some kind of RF transmitter?  The transmitter (on you) transmits some kind of pilot tone, or better yet a digital serial number, which the reciever (on the child) recognizes.  It would be easy enough to have the reciever emit some kind of alarm when the signal is too low...
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    Circuit simulation and PCB design software

    I'm trying to get ahold of some simulution and PCB design software.  I've used Electronic Workbench Multisim and Ultiboard, but I'm not totally satisfied with it.  The software hangs quite often, and I've had much problems with generating a netlist in Multisim and transferring it to Ultiboard. ...
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    How to transmit music from PC to music system wirelessly...??

    Have you checked out the RF section in the avalible projects?
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    Tandberg Solvsuper renovation + DAB project

    Hello there, one and all. Since I've just finished a project, it's time to start a new one.  I've been putting this one off for too long. :)  I purchased an old but working Tandberg Solvsuper 12 radio a couple of years back.  It's a kindof classic Norwegian brand, and I really love the look and...
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