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#71
circuitbenders.co.uk CB55 - DIY Boss DR55. / Re: Verifying sounds.
Last post by Circuitbenders - November 18, 2020, 11:57:14 PMFor a start you have the bass and snare the wrong way round in that video! 
Have you got the correct value in VR2? If i recall correctly adjusting VR2 should stop that squeal happening on the hats.
As it says in the build guide:
"The noise level for the hat and snare sounds is adjusted using VR2. We'd recommend using a decent quality trimmer for this as theres sometimes a fairly thin range of adjustment between the noise level being too quiet, and it starting to resonate strangely."
Have you got the correct value in VR2? If i recall correctly adjusting VR2 should stop that squeal happening on the hats.
As it says in the build guide:
"The noise level for the hat and snare sounds is adjusted using VR2. We'd recommend using a decent quality trimmer for this as theres sometimes a fairly thin range of adjustment between the noise level being too quiet, and it starting to resonate strangely."
#72
circuitbenders.co.uk CB55 - DIY Boss DR55. / Re: simple midi to trigger boa...
Last post by DavidKatz - November 18, 2020, 11:35:01 AMyes please, also sent pm
#73
circuitbenders.co.uk CB55 - DIY Boss DR55. / Verifying sounds.
Last post by DavidKatz - November 17, 2020, 02:50:49 PMHi,
I hate for my very first post to be one for help.
After a few hours of checking my CB55 only to find out the transistors installed had the wrong pinout, they were 2SC945 ordered from Tayda but base and collector were wrong, lesson learned, always check the datasheet.
Can somebody confirm whether my board sound right? the hat doesn't to me but I have uploaded a short video testing each, yes I did adjust UR1 and UR2 but not much improvement.
I'm not sure about the Accent pin on Trig_IN1 pin 5 either but it works when I adjust the pot.
https://youtu.be/85fFq262R2g
I appreciate any feedback/comments.
Cheers
Dave.
I hate for my very first post to be one for help.
After a few hours of checking my CB55 only to find out the transistors installed had the wrong pinout, they were 2SC945 ordered from Tayda but base and collector were wrong, lesson learned, always check the datasheet.
Can somebody confirm whether my board sound right? the hat doesn't to me but I have uploaded a short video testing each, yes I did adjust UR1 and UR2 but not much improvement.
I'm not sure about the Accent pin on Trig_IN1 pin 5 either but it works when I adjust the pot.
https://youtu.be/85fFq262R2g
I appreciate any feedback/comments.
Cheers
Dave.
#74
Circuitbending discussion / Re: Issue with a LTC and a Cas...
Last post by project null - November 15, 2020, 11:41:33 PMhey, really sorry about this, but when I read on the contact page "1 - We are not a repair company, and we don't usually do general servicing and repairs unless we're installing mods on a machine at the same time.", I thought I was not legitimate to get in touch with you as I've just bought the LTC chip and not an actual mod on my sk1.
thank you very much for your diagram, what was wrong with the mod was the cut on the pcb, not deep enough, it was probably messing with the pot. whatever, now it works and I am super happy with it, so thank you again!
thank you very much for your diagram, what was wrong with the mod was the cut on the pcb, not deep enough, it was probably messing with the pot. whatever, now it works and I am super happy with it, so thank you again!
#75
Circuitbending discussion / Re: Issue with a LTC and a Cas...
Last post by Circuitbenders - November 13, 2020, 07:05:04 PMWhy have you written that we don't do technical support on that post?
You might just have a very dirty and intermittent pot there. The trimmer pot on the LTC module is enough to keep the SK1 from crashing when its adjusted correctly. You don't need extra resistors.
Theres no real way of helping here without knowing exactly how you've tried to wire it in.
We usually wire an LTC in as on the attached image
You might just have a very dirty and intermittent pot there. The trimmer pot on the LTC module is enough to keep the SK1 from crashing when its adjusted correctly. You don't need extra resistors.
Theres no real way of helping here without knowing exactly how you've tried to wire it in.
We usually wire an LTC in as on the attached image
#76
Banter / Re: I got a DEAL! (The "I want...
Last post by iwillbeacircuitbender - November 11, 2020, 10:41:33 PMSorry to reply to an older thread, but I got a CTK-500 for a little over 60 dollars on http://www.offerup.com
And excuse me for the random picture as well
And excuse me for the random picture as well
#77
Circuitbending discussion / Issue with a LTC and a Casio S...
Last post by project null - November 11, 2020, 01:00:57 AMhey there!
sorry for creating again another thread about the sk1, but I really need your help and I don't find the answer anywhere. sorry also about being the guy that just created an account today and already asks for tips, I hope you won't find it offensive.
I posted a video on reddit some days ago about a issue with a LTC and a SK1 : https://www.reddit.com/r/CircuitBending/comments/jnyrpd/issue_with_ltc1799_oscillator_and_casio_sk1/ where I followed the User 173's tutorial on YouTube, but even if I am 100% sure I followed the diagram he posted, I have a lot of glitches while turning the potentiometer (you can hear it on the video I made on reddit), until it goes an octave lower and it's fine. I thought my chip was defective, so I bought another one today and I have the same problem.
I tried to use various resistors, but I honestly don't really know what I'm doing. mad_marbled on the thread told me this : "Looking at the data sheet, you want to maintain a minimum resistance on the DIV pin.(pin 4) of 5-10Kohms." the DIV pin is the one that goes into the potentiometer, right? I tried many different values between 5 and 10kohms, and at 10kohms I have no more glitching but it drops about an octave lower when I engage the switch, and I don't think it is supposed to sound like this.
I know it sounds unorganized and my english is far from perfect, I really hope you will understand my problem and eventually you could help me.
Thank you very much, and have a nice day!
sorry for creating again another thread about the sk1, but I really need your help and I don't find the answer anywhere. sorry also about being the guy that just created an account today and already asks for tips, I hope you won't find it offensive.
I posted a video on reddit some days ago about a issue with a LTC and a SK1 : https://www.reddit.com/r/CircuitBending/comments/jnyrpd/issue_with_ltc1799_oscillator_and_casio_sk1/ where I followed the User 173's tutorial on YouTube, but even if I am 100% sure I followed the diagram he posted, I have a lot of glitches while turning the potentiometer (you can hear it on the video I made on reddit), until it goes an octave lower and it's fine. I thought my chip was defective, so I bought another one today and I have the same problem.
I tried to use various resistors, but I honestly don't really know what I'm doing. mad_marbled on the thread told me this : "Looking at the data sheet, you want to maintain a minimum resistance on the DIV pin.(pin 4) of 5-10Kohms." the DIV pin is the one that goes into the potentiometer, right? I tried many different values between 5 and 10kohms, and at 10kohms I have no more glitching but it drops about an octave lower when I engage the switch, and I don't think it is supposed to sound like this.
I know it sounds unorganized and my english is far from perfect, I really hope you will understand my problem and eventually you could help me.
Thank you very much, and have a nice day!
#78
'Offload Your Shit' / Big Bumper Box of Vintage Toys...
Last post by boneless - November 10, 2020, 10:20:00 PMI will never get the time to deal with all this stuff. Please help me keep it from landfill...
https://www.ebay.co.uk/itm/133572867966
https://www.ebay.co.uk/itm/133572867966
#79
Drum machines / Re: Mattel Synsonics
Last post by ultramars - November 03, 2020, 03:29:58 AMQuote from: Circuitbenders on December 18, 2008, 12:12:27 PMNow with the rotating knobs, it really evocates this:
#80
Drum machines / Re: Mattel Synsonics
Last post by ultramars - November 03, 2020, 03:27:28 AMFor those willing to take the risk of frying their syncsonics, it's all in there:
http://www.burnkit2600.com/synsonics-drums/
i'm gonna buy one this afternoon, looking forward to that
http://www.burnkit2600.com/synsonics-drums/
i'm gonna buy one this afternoon, looking forward to that