Nice! I turned one of these into a Eurorack module too, but I’m lazy so I just used a 16 pin connector and the 5V rail 😅 I found my 3D printed panel too flimsy and made a proper panel for it in the end. I have the one with front switches, so those are accessible via the panel too.
Awesome! I was thinking of adding all the switches to the frontpanel, but since mine is the model where the switches a located at the sides, so it was too much work - I'm lazy too.... 😂😋
Hey, thanks a lot! You will find the documentation of the passive mult on my GitHub: github.com/tkilla64/eurorack/tree/main/pmult But you will only need a half mult, so the cheapest and simplest way is to connect 4 jacks with wires, see schematic diagram here: github.com/tkilla64/eurorack/tree/main/misc/dso138mini_mod Good luck!
I like what you did to make this a nice module. I also want to do this to use in my modular system. I do have two questions however. My power supply is 15V. If I'm correct the module will use 5V. So I need a 7805. I'm a little afraid it will get too hot. How did you do this with your 12V eurorack? Another question I have is about the input. My modular uses input of 10vpp. Looking at this module it's can handle 5V input maximum. How did you solve that?
Hello, The 7805 doesn't get so warm at 12V, but maybe it's a good idea to have a heatsink for 15V operation... The power dissipation is around 1W (100mA * 10V) with a 15V power supply.. The max input voltage is 50Vp-p. I have the sensitivity switches set to 1V and x2, which means that the scaling will be 2V/div. I have selected DC coupling mode so can look at slow CV signals.
@@MeeBilt I thik it's better to use a buck convertor instead of a 7805, although with a buck convertor I'm a little afraid it will cause some noise on my power supply. But a few capacitors will solve that I hope. I cannot find any documentation about the function of those switches. But if I understand you correctly I can limit the maximum voltage to 5Vpp? So no need to use resistors to create a voltage divider on the input?
@@Patrick-sp6zu Yes, the switches work like an attenuator (like on a "real" oscilloscope). The documentation is really poor but if you look at the silkprint of the PCB, you will understand how they work. Good luck with your build!
Excellent! This is exactly what I was looking for. Would you consider to share a close up and details on the 5V pinbox with the others additional components that are required? And where did you acquire the pcb for the 3.5mm sockets? Thanks in advance!
The schematic diagram and bom for the 5V linear regulator circuit can be found here: github.com/tkilla64/eurorack/tree/main/misc/dso138mini_mod I used half of the pmult PCB (also on my GitHub). But you don't need a PCB for that - it's just 4 jack sockets connected in parallell.
Hey HarmO! Yeah I think there are different version of this kit, one with angled switches and one with straight ones. I bought mine at Banggood a while ago when they where on sale and it have been sitting in a box until now.
It's not extremely low; I would approximate it to around 5 frames per second. But this will of course depend on the horisontal sweep time and trigger setting. But compared to equipment that are 10 or 100 times more expensive it will of course come up short.
Perfect - exactly what I'm looking for! Thanks for the video.
You're welcome, robman80808!
Nice! I turned one of these into a Eurorack module too, but I’m lazy so I just used a 16 pin connector and the 5V rail 😅 I found my 3D printed panel too flimsy and made a proper panel for it in the end. I have the one with front switches, so those are accessible via the panel too.
Awesome! I was thinking of adding all the switches to the frontpanel, but since mine is the model where the switches a located at the sides, so it was too much work - I'm lazy too.... 😂😋
Hi great video! I bought the kit too. Can you please provide a list or links to the other parts I need like the passive mult etc? Thank you so much!
Hey, thanks a lot!
You will find the documentation of the passive mult on my GitHub:
github.com/tkilla64/eurorack/tree/main/pmult
But you will only need a half mult, so the cheapest and simplest way is to connect 4 jacks with wires, see schematic diagram here:
github.com/tkilla64/eurorack/tree/main/misc/dso138mini_mod
Good luck!
Do you have a diagram of what you added/modified on the board?
Yes, it's on my GitHub:
github.com/tkilla64/eurorack/tree/main/misc/dso138mini_mod
I like what you did to make this a nice module. I also want to do this to use in my modular system.
I do have two questions however.
My power supply is 15V. If I'm correct the module will use 5V. So I need a 7805. I'm a little afraid it will get too hot. How did you do this with your 12V eurorack?
Another question I have is about the input. My modular uses input of 10vpp. Looking at this module it's can handle 5V input maximum. How did you solve that?
Hello,
The 7805 doesn't get so warm at 12V, but maybe it's a good idea to have a heatsink for 15V operation... The power dissipation is around 1W (100mA * 10V) with a 15V power supply..
The max input voltage is 50Vp-p. I have the sensitivity switches set to 1V and x2, which means that the scaling will be 2V/div. I have selected DC coupling mode so can look at slow CV signals.
@@MeeBilt I thik it's better to use a buck convertor instead of a 7805, although with a buck convertor I'm a little afraid it will cause some noise on my power supply. But a few capacitors will solve that I hope.
I cannot find any documentation about the function of those switches. But if I understand you correctly I can limit the maximum voltage to 5Vpp? So no need to use resistors to create a voltage divider on the input?
@@Patrick-sp6zu Yes, the switches work like an attenuator (like on a "real" oscilloscope). The documentation is really poor but if you look at the silkprint of the PCB, you will understand how they work. Good luck with your build!
Excellent! This is exactly what I was looking for. Would you consider to share a close up and details on the 5V pinbox with the others additional components that are required? And where did you acquire the pcb for the 3.5mm sockets? Thanks in advance!
The schematic diagram and bom for the 5V linear regulator circuit can be found here:
github.com/tkilla64/eurorack/tree/main/misc/dso138mini_mod
I used half of the pmult PCB (also on my GitHub). But you don't need a PCB for that - it's just 4 jack sockets connected in parallell.
@@MeeBilt thank you very much, I really appreciate it👍👍
Hi mate ! Already made this one last year, with putting the switches on the front panel.
Pretty good idea to use a multiple to fill that empty space!
Hey HarmO! Yeah I think there are different version of this kit, one with angled switches and one with straight ones.
I bought mine at Banggood a while ago when they where on sale and it have been sitting in a box until now.
@@MeeBilt haha I had to buy switches separately and it was not an easy job!
@@dtharmo I can understand that - it doesn't seem to be a "standard"-part.
Really cool!
Thanks! I have update my GitHub with a schematic diagram and a BOM just now
@@MeeBilt Could you export the top plate to dxf file? i wanna laser cut the top plate to aluminium
@@hanaloginstruments8930 I'm sorry but I can't export anything except mesh format.
I got excited at first, but it looks like the refresh rate is extremely low
It's not extremely low; I would approximate it to around 5 frames per second. But this will of course depend on the horisontal sweep time and trigger setting.
But compared to equipment that are 10 or 100 times more expensive it will of course come up short.
nice
Thanks Jules! 😀