Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
Hi, I would need your suggestion regarding 32-bit ARM processors. I'm planning to use it instead of the microchip processor. Do you know of any, which are easy to code? Co'z I've read that 32-bit ARM are trickier to develop. Thanks!
I've been reading a lot of WIFI stuffs lately and I'm quite sure it is possible to interface it to a microcontroller. Question is, is it as easy as connecting only two pins (TX & RX) from the WIFI module directly to the microcontroller? Some examples of WIFI modules are from ZeroG Wireless and...
Hi guys, I would like to ask for your suggestions regarding any LCD's that requires only low power. I am planning to have it battery operated and would definitely help if it consumes only small amount of juice. Thanks!:)
You were right mneary, the speaker needs enclosure. It's still not perfect though co'z I only use some cardboard. I'll try to find some rubberized foam and see what happens! I'm very happy I finally got it to work! Thanks to you!:D
Does this mean that only the "A" "B""C" "D" tones of the DTMF are messed up since they are the only one under the 1633 Hz frequency?
How will I figure this out? Do I have to use an oscilloscope for this coz I don't have all the equipment really..
Wow, this is such an expensive speaker and I'm having so much problem with it. I appreciate all your help guys! Thanks!:)
The reason by the way on why I chose this over the 8 ohm speaker is because it takes lesser energy from my battery. Seems to me, it's not worth it!:mad:
Is there no...
You're right, given same condition! But I do have a potentiometer installed, so i can adjust the volume. That is why I could set the 8 ohm speaker to its lowest volume and the 150 to a higher volume. The thing is, even if the 8 ohm has lower volume it can still be detected. So I think it is not...
No, the problem is not on the volume or gain. I tried to lower the volume of the 8 ohm speaker comparing it to the loudest volume on the 150 ohm but still I could detect the dtmf tones coming out from the 8 ohm and not on the 150 ohm which is way louder.
Hi audioguru! Actually that is not a battery but a capacitor. the actual circuit is actually on the first page. that is just a revised circuit I've made which adds the resistor and capacitor in the speaker acting as a low pass filter suggested by mneary.
Up to now, I still can't decode the...
Hearing from the tones coming out from it, the 150 ohm sound better than the 8 ohm speaker. The 8 ohm speaker sounds very distorted with a lot of hiss coming out. But still I can detect the tones coming out from it.
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