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About Bassanova

  • Birthday 09/15/1979

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  1. 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 rather that the sensation of sound is discomforting. But I don't see how a loud sound can further damage the hearing of a hearing impaired person using a home-made hearing aid, when the sound isn't damaging the hearing of a person without hearing impairment. When the sound is only amplified to the point of a normal level of hearing, I just don't see the difference. I'm sorry if I'm harping on this. On one side I want to make my grandfather's everyday life better, but, at the same time, I don't want to damage his hearing further. :)
  2. 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 sound level recognized by the human brain would be the same in both cases, thus producing the same amount of discomfort. Or is this not the case?
  3. 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 I'm at a bit of a loss as to how to make this equalizer. Datasheet databases come up with several graphic equalizer ICs, but I haven't been able to track down any of them. So I'm considering just making the equalizer by using standard opamps. But I was wondering if anyone has any points of view on this. Pros and cons regarding one method or the other. Thanks!
  4. 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 resistance/voltage from the potentiometer to whatever input the actuator has. By the way, I would under no circumstances call you an idiot for dealing with electronics as a mechanical engineer. I'm an electronics engineer myself, so I wouldn't want people calling me an idiot just for using a torque wrench. ;D
  5. 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 need; once a second, once a minute, once every quarter of an hour etc. Then you just toggle an output pin high and low to control the submerged heater / hotplate. Elements like multiple temperature break points and hysteresis for the heater is easily controlled within the microcontroller program. I'm not a brewer and don't understand the process involved exactly, so please correct me if I'm off on something. :)
  6. Ah, this is excellent! ;D That's exactly what I was looking for! Thanks a bunch!
  7. 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 not after decoding the information in the GSM signal. I just want to detect that my phone recieves a call or an SMS, so I can use this to trigger a reaction in a PIC program. I've seen stickers and "jewlery" sold in stores, that has a LED that blinks when the cell phone is transmitting. So I gather there's some kind of antenna in the sticker, and that the cell phone signal from the phone induces enough energy for the LED to blink. I was thinking about just buying such a sticker, and start dissecting it with my sledge hammer and pickaxe. ;D
  8. 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 (transferring netlist etc.)?
  9. 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 (i.e. the transmitter is too far away). And you can just tune the attenuator on the trasmitter to what distance you want on the "leach". An idea that came to me just now: If you implement some kind of time limited "pause / time off" function, for instance if you want the child to go grab a milk or a loaf of bread at the store, and the child doesn't come back, you could also implement a "locate" button, where the transmitter transmits a command at full strength, forcing the reciever into alarm mode. The system could have a 10-20 yard range in normal mode, while perhaps a 200-300 yard range in "force alarm" mode. Just an idea...
  10. 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. Even more problems when I'm using components that I had to create the layout for, myself. I've heard great stuff about Orcad, but I've never tried it. Is there some software test avalible online, where they've listed the pros and cons about the different types? Or do any of you guys (or gals) have any tips?
  11. 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 feel of it. Check it out here: http://www.nrhf.no/TR-SS-12.html Anyhow, I've been thinking about renovating it and implementing a DAB decoder in it. I've tried to search both Google and the forum, but all I got was topics regarding depenDABle, afforDABle, understanDABle projects from people who DABbles in this and that. In other words: bupkus. There's more or less a zillion different decoders avalible on the market, but most of them seems terribly overkill for this somewhat small project. Does anyone here have any experience in DAB circuits, and can recommend a decoder I can read up on or a website to browse through? I'm not completely sure of in which direction I'll start, one might say. Thanks again!
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