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Re: Pedal Building Resources
Posted: Sat Oct 10, 2020 8:49 pm
by NippleWrestler
Miza wrote: ↑Sat Oct 10, 2020 7:40 pm
General noob electronics question:
Can I substitute a 510k ohm resistor for a 470k ohm resistor? Will it matter?
And likewise, a 51k for a 47k?
It's for a TS808 circuit. I could go to JayCar and buy the right ones, but can't be arsed making a special trip if it won't make a difference in the long run.
The 510k is in the input buffer which basically sets a high impedance. 470k will result in slightly lower impedance so you might hear less high end, but you won't likely hear any difference.
The 51k is in the first gain stage. A 47k will result in slightly less gain but again you probably won't hear the difference (118 vs 116 with 51k/47k respectively).
Re: Pedal Building Resources
Posted: Sat Oct 10, 2020 9:04 pm
by Miza
Awesome, thanks for the reply!
I spose I could always socket them and change them later if I wanted to.
Re: Pedal Building Resources
Posted: Sun Dec 19, 2021 10:08 am
by Cdog
Re: Pedal Building Resources
Posted: Sun Dec 19, 2021 12:05 pm
by Miza
I need to build one of those pedal testers, would save a lot of hassle when testing pcbs.
Re: Pedal Building Resources
Posted: Thu Dec 23, 2021 11:53 pm
by Mattallica
PedalPCB offering 15% off orders right now
Re: Pedal Building Resources
Posted: Mon Jan 10, 2022 12:58 pm
by chur
Bit warm to work outside, luckily found enough bits to make a Zendrive to fill a few hours this afternoon while enjoying a small breeze
- IMG_20220110_135447.jpg (3.01 MiB) Viewed 4036 times
Re: Pedal Building Resources
Posted: Wed Jan 12, 2022 7:09 pm
by chur
Finally got around to drilling the casing, my least fav job. (Well, that and labelling)
Tried a few different opamps, settled on the TL072, but with the socket easy enough to swap. (Not much difference between most tbh)
- IMG_20220112_200220.jpg (2.72 MiB) Viewed 3899 times
- IMG_20220112_200234.jpg (2.67 MiB) Viewed 3899 times
Re: Pedal Building Resources
Posted: Wed Jan 12, 2022 8:25 pm
by FuzzMonkey
chur wrote: ↑Wed Jan 12, 2022 7:09 pm
Finally got around to drilling the casing, my least fav job. (Well, that and labelling)
Tried a few different opamps, settled on the TL072, but with the socket easy enough to swap. (Not much difference between most tbh)
What other op-amps did you try out of interest?
Re: Pedal Building Resources
Posted: Wed Jan 12, 2022 8:58 pm
by chur
FuzzMonkey wrote: ↑Wed Jan 12, 2022 8:25 pm
chur wrote: ↑Wed Jan 12, 2022 7:09 pm
Finally got around to drilling the casing, my least fav job. (Well, that and labelling)
Tried a few different opamps, settled on the TL072, but with the socket easy enough to swap. (Not much difference between most tbh)
What other op-amps did you try out of interest?
LM833 and NE5532 mostly, nothing too exotic
Side by side I think I still prefer 'The Dude' clone I made a while back, but not much in it
Re: Pedal Building Resources
Posted: Thu Jan 13, 2022 7:41 am
by Miza
I must try one of those mini footswtich boards on my next build, they make it look so much tidier on the inside. And I imagine makes it a bit easier?
Re: Pedal Building Resources
Posted: Thu Jan 13, 2022 7:43 am
by NippleWrestler
Miza wrote: ↑Thu Jan 13, 2022 7:41 am
I must try one of those mini footswtich boards on my next build, they make it look so much tidier on the inside. And I imagine makes it a bit easier?
I have hundreds if you'd like some. They're made for true bypass wiring.
Re: Pedal Building Resources
Posted: Thu Jan 13, 2022 7:54 am
by Miza
NippleWrestler wrote: ↑Thu Jan 13, 2022 7:43 am
Miza wrote: ↑Thu Jan 13, 2022 7:41 am
I must try one of those mini footswtich boards on my next build, they make it look so much tidier on the inside. And I imagine makes it a bit easier?
I have hundreds if you'd like some. They're made for true bypass wiring.
Can't say no to that, I'll PM you.
Re: Pedal Building Resources
Posted: Thu Jan 13, 2022 10:56 am
by chur
Miza wrote: ↑Thu Jan 13, 2022 7:41 am
I must try one of those mini footswtich boards on my next build, they make it look so much tidier on the inside. And I imagine makes it a bit easier?
Yer, if you have sausage fingers like me they save a heap of time and frustration!
Re: Pedal Building Resources
Posted: Thu Jan 13, 2022 4:19 pm
by FuzzMonkey
chur wrote: ↑Thu Jan 13, 2022 10:56 am
Yer, if you have sausage fingers like me they save a heap of time and frustration!
They are pretty handy. I used one in my one and only PedalPCB build and it worked a treat.
I'd hazard to guess that unless you are an expert at desoldering or used the minimum amount of solder to secure the switch in place, you'd be hard pressed to reuse it without potentially damaging the board if the switch fails for whatever reason. Some of that grey ribbon cable would finish it off nicely however.
Re: Pedal Building Resources
Posted: Thu Jan 13, 2022 6:13 pm
by chur
FuzzMonkey wrote: ↑Thu Jan 13, 2022 4:19 pm
chur wrote: ↑Thu Jan 13, 2022 10:56 am
Yer, if you have sausage fingers like me they save a heap of time and frustration!
They are pretty handy. I used one in my one and only PedalPCB build and it worked a treat.
I'd hazard to guess that unless you are an expert at desoldering or used the minimum amount of solder to secure the switch in place, you'd be hard pressed to reuse it without potentially damaging the board if the switch fails for whatever reason. Some of that grey ribbon cable would finish it off nicely however.
I have done it using solder wick and it wasn't too bad. I usually have a few spare boards, so probably wouldn't bother most of the time unless desperate.
Funny you mention the ribbon, I'm up to about the 12th build now over the last few years, and each time I say the same thing... and then never buy any
