ive finished it, volume can be a trimmer unless you like the option of having a massive volume boost availlable, rate might be better as a linear as the speed is pretty bunched up. otherwise it sounds pretty close to my princeton reverb trem. nice little circuit.
Hi! First of all, I love your blog. I built my very first TS-808 clone (and first DIY pedal ever) thanks to you!
I am preparing to build this tremolo pedal but I am really wondering about the wiring of the LED. I usually have only one free pin on my 3PDT. So when connecting the LED in bypass mode, one end will go to the 3PDT and the other will go to the +9V (through a 4k7 resistor).
But in this case, the LED is also used for the rate and both its pins have levels that are different than +9V and GND. I usually use the grounded input 3PDT wiring. Would it hurt if I let the input floating during bypass? Because that way I would have the extra pin that I need for connecting the LED.
Thank you very much for your answer! I understood that the clicking of the 3PDT could be heard if the input is not grounded. Or is it just happening with distortion pedals?
I have another question which might sound stupid to you: Does the LED have an actual function besides indicating the rate?
In other words, if I do not use it, should I replace it with a wire or leave it open? In the latter case, I was thinking that it wouldn't hurt then to put the LED between the LED+ and GND and keep my classic grounded input wiring!
i build tree times already and not work yet! first time the rate/speed works and show in led (but the signal not passed perfectly, but the efx works! and i used 1uF film caps to substitute 470nF, just in this first time!) and in the second and third the signal pass without efx, the volume works like booster but nothing about efx, and the led dont do the flashes, stay turn on constantly. each time i do a new board, starting by zero. what can be my problem? and sorry for bad english, im from brazil!
theres a pad missing on the pcb between the 2m2 and 1uf cap
ReplyDeleteThanks for the catch. Fixed.
Deleteive finished it, volume can be a trimmer unless you like the option of having a massive volume boost availlable, rate might be better as a linear as the speed is pretty bunched up.
ReplyDeleteotherwise it sounds pretty close to my princeton reverb trem.
nice little circuit.
Hi! First of all, I love your blog. I built my very first TS-808 clone (and first DIY pedal ever) thanks to you!
ReplyDeleteI am preparing to build this tremolo pedal but I am really wondering about the wiring of the LED. I usually have only one free pin on my 3PDT. So when connecting the LED in bypass mode, one end will go to the 3PDT and the other will go to the +9V (through a 4k7 resistor).
But in this case, the LED is also used for the rate and both its pins have levels that are different than +9V and GND. I usually use the grounded input 3PDT wiring. Would it hurt if I let the input floating during bypass? Because that way I would have the extra pin that I need for connecting the LED.
Thanks in advance for your answer!
I built one of these and I left the input floating and didn't have a problem. You should be fine.
DeleteHi,
DeleteThank you very much for your answer! I understood that the clicking of the 3PDT could be heard if the input is not grounded. Or is it just happening with distortion pedals?
I have another question which might sound stupid to you: Does the LED have an actual function besides indicating the rate?
In other words, if I do not use it, should I replace it with a wire or leave it open? In the latter case, I was thinking that it wouldn't hurt then to put the LED between the LED+ and GND and keep my classic grounded input wiring!
That mostly happens with high gain pedals in my experience.
DeleteThe LED is only there to show the rate. If you don't want to use it just omit it.
Thanks! I will experiment with the LED between LED+ and GND before soldering. Otherwise I'll leave the input floating!
DeleteThanks again!
i can use two leds? one in circuit for tremolo rate and another direct in dc for on/off?
ReplyDeleteYeah. Just ignore the switch wiring diagram above and wire the rate LED to the pads on the board.
DeleteThis comment has been removed by the author.
ReplyDeletei build tree times already and not work yet! first time the rate/speed works and show in led (but the signal not passed perfectly, but the efx works! and i used 1uF film caps to substitute 470nF, just in this first time!) and in the second and third the signal pass without efx, the volume works like booster but nothing about efx, and the led dont do the flashes, stay turn on constantly. each time i do a new board, starting by zero. what can be my problem? and sorry for bad english, im from brazil!
ReplyDelete"each time i DID a new board"
Deleteps; i already did some pedals like phase 45 and big muff ram`s head and they worked perfectly, i really have no idea where the error is
ReplyDeleteHave you gone through it with an audio probe?
Deletehttp://www.diystompboxes.com/pedals/debug.html
Wow, nice pedal! I did a mod on rate/speed because i wanted more fast rate. I replaced the 2M2 resistor beside Q3 to 1M and it worked very well.
ReplyDeleteThis comment has been removed by the author.
ReplyDeleteThis comment has been removed by the author.
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