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Thanks for the tips :)
What are the proper safety precautions so that I could do this?
Thank you, I've done some research and the smallest smd resistors I could find have a maximum rating of .05 watts, so I plan to use this as a bench mark and I will give a questionable rating of my oscilloscope of .025 watts for a smartphone meaning a maximum voltage of 15 volts. I think I laptop might handle more, but I'll also warn them to be ware of possible danger. Thank you for your help. Thank you so much for pointing this out :)
That's ok, I think I only came up with it cause I had a need. You see, I just got into electronics and I'm crippled and have no money so this was like my only option starting out. Currently though I'm finishing up one if those atx type supplies cause I got one for free on craigslist and I'm still on the look out for a way to get an official oscilloscope.
Hi Lean, yeah, I'm still not sure of that myself, I was trying to find the power rating of the components inside a smartphone cause if I had 2 watt resistors I think my oscilloscope could possibly handle even wall outlets, but I still don't know about sparking with all that voltage. I'm pretty sure however that a smartphone can't handle the 1.5 watts of that setup, but perhaps a laptop could?Could you loan me some of your expertise Lean? Because I myself am a bit of a young player.
Oscillo-Power: Audio Jack O...View Instructable »
Won't 2 amps be too much for your phone or other usb devices?? I read that usb outputs .5 amps.Could this damage anything? What about more amps? At what point is it unsafe if this is safe? Thank you for your time.
Oh, thank you, I've been planning to make something like this for a short while. Now I think I'll implement your usb charger port in my plans :)
Hello, I'm struggling to pin down the datasheet on your transistor, but one datasheet I observed showed a transistor with a turn on voltage of .45 to .75 while the transistor in this instructable turns on at .65 to .85/.95. Mayb your transistor isn't on. I'm sorry.
Hi Mr_Bablae,I just noticed your comment and remembered that the indestructible maker did mention painting:"PaintingI was aiming for a durable matte finish. 2 coats epoxy primer 2 coats enamel 1 coat clear coatWhen spray painting it is best to do light passes and let paint build up slowly. A light sanding with high grit sandpaper after the first enamel coat could yield a cleaner result."Hope this helps :)
You're welcome to my aid :)
Hi Milen,I didn't see your response sooner than today. I have been experimenting with things like this, so far no working mods. But I was wrong originally. The 100k resistors did add a tiny bit of distortion and no noticeable vibrato. I think the error occurred because I tested the guitar while it was hanging on the wall so it was unhindered enough to vibrate.Now after trying to mod it so much, I'm instead liking the small distortion it has and am in favor of building that pedal you showed me, I just need to scrounge together the parts. Thanks again :)
Thank you so much, I tried doing your thing and it just made whole signal fuzzy with mine :(
Hey, I wanted to do this with an op amp I made out of spare computer parts but I'm a newbie at this, where do you think I should put it?
Hey again Milen!It worked!! I boosted the feedback resistors and it totally got louder. (Sidenote: mounting smd devices is very very tedious!).I did however go beyond the 2x ratio you mentioned (43kOhms -> 100kOhms) as a sound experiment, as I'm using this for guitar and I wanted to test how it would be because you mentioned that it might clip and I desired a bit if distorted sound. It ended up sounding a bit vibratoish. Is that oscillation and is that dangerous for the OP amp? Any thoughts on how to get a crunchy sound?Thank you, your so helpful!
Hey,Thanks I'll have to check them then. :)And thanks for the advice and the suggestion about the voltage. I remembered that it could be supplied by as little as 2 volts so I just use one 3v battery and it seems to work fine. Plus they're very compact and cheap if you know where to get them.Many thanks,Christin
Thank you! You really did get me into electronics, I've never even used a soldering gun or an ohmeter before I read your article!Now, I couldn't originally find the datasheet for an unknown reason. (I just plugged in a 9 volt battery and it didn't work so I plugged in 2x 3 volt batteries I had lying around and it worked. Which in itself has me concerned because I just was able to find the data sheet and it's max voltage is 5.5 volts, is it ok to use 6?)But anyways, now that I've found the datasheet (here: http://pdf1.alldatasheet.com/datasheet-pdf/view/8932/NSC/LM4808M.html ), I think it says I can do what you're saying, if I'm not mistaken. I just have to figure out what and where the feedback resisters are lol. If you'd like to help, I appreciate it, but if you're busy, I understand.T...see more »Thank you! You really did get me into electronics, I've never even used a soldering gun or an ohmeter before I read your article!Now, I couldn't originally find the datasheet for an unknown reason. (I just plugged in a 9 volt battery and it didn't work so I plugged in 2x 3 volt batteries I had lying around and it worked. Which in itself has me concerned because I just was able to find the data sheet and it's max voltage is 5.5 volts, is it ok to use 6?)But anyways, now that I've found the datasheet (here: http://pdf1.alldatasheet.com/datasheet-pdf/view/8932/NSC/LM4808M.html ), I think it says I can do what you're saying, if I'm not mistaken. I just have to figure out what and where the feedback resisters are lol. If you'd like to help, I appreciate it, but if you're busy, I understand.Thank you very much
Well after popping open a few other drives I found a super easy pcb and got it to work! it's a bit quiet tho, any way to make it louder by chance?
Oh, thank you! But I'm a super novice at this, how exactly do I do that?By the way, thanks for your instructable, it's the only one like it that I found and it's got me interested in all this sort of stuff.
I really want to make this, but I'm totally lost, and have never done anything like this before, will someone help me out? Here's the board I got to work with
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