DIY Mutable Unsuccessful Builds

[Sinamsis]

Hi fellas and fellitas!
Just got my JakPlugg uTides II from Pusherman kit, put it together (as other 4 modules the same day), all of them are working, but uTides do not :(
The output LEDs are lit, the input signal flashes the pot diodes (but on wrong jack pins actually), but the control LEDs don't do anything, there is no output.
Does anyone have similar problem?
Pusherman website says that the firmware is installed and that I need to do a calibration, but at this state, I can't even start with a calibration since the module does not seem to be working
Thanks a bunch in advance for any advise

Same here. This preflashed board from pusherman does not appear to be flashed. All output leds are lit and showing 8V (as if the DAC just got VCC and initialized its outputs). Everything else seems fine...

EDIT: I flashed the firmware and all is well. I used an STM32 discovery board and wired it as mention on "cagey" blog.

I'm having the same issue with the Pusherman kit.... I'm trying to follow the instructions for using the mutable dev environment but I keep getting issues with the Vagrant up command. I can, however, connect to the STM32 using the ST Link v2 and the STM32Cube Programmer. I did find a compiled hex file for uTides II (I think) but writing it to the module didn't seem to do anything. Does anyone have a hex file I can try? Or tips on how to get Vagrant and Virtual Box to communicate without timing out?

[krck]

I can send a tides2_bootloader_combo.hex if you like. PM your email address.

Regarding the Vagrant timeout … I assume you are running on Windows?
Here are some informations on timeouts https://stackoverflow.com/questions/236 ... up-timeout

Getting Vagrant to run would really help, as you can clearly see, if flashing works or not.

[Sinamsis]

I can send a tides2_bootloader_combo.hex if you like. PM your email address.

Regarding the Vagrant timeout … I assume you are running on Windows?
Here are some informations on timeouts https://stackoverflow.com/questions/236 ... up-timeout

Getting Vagrant to run would really help, as you can clearly see, if flashing works or not.

Thank you! I got the boot loader combo hex from Pusherman. Ha then my computer stopped recognizing the STLink. I’m on a newer MacBook Pro w an M1 chip. I think this is the root of the problem. I’m going to try with an older MacBook I have at work and see if I can get it to work.

[Sm95uk]

Hey everyone,

I'm having a bit of a trouble with a Jakplugg uBraids 2 from Pusherman, on powering the module the R49 resistor starts smoking and glowing rapidly, I have replaced the two 22u caps as I thought they may be responsible, but same issue. When I was looking through the schematic pdf I noticed a component listed which wasn't part of the google sheets BOM (kmz1608yhr601btd25), no idea if this could be an issue however. I'm fairly new to this stuff so if anyone has any pointers I'd be very grateful, thankyou!

[Altitude909]

somethings shorted, find whats getting hot

[dgrainger]

Make sure the diodes in that rectifier are all oriented correctly.

[Sm95uk]

somethings shorted, find whats getting hot

Is it not the resistor getting hot? Sorry, I'm not the most electronically minded. I should say I also replaced r49, thanks!

Make sure the diodes in that rectifier are all oriented correctly.

So I could try inverting the MB1S or replacing? I just followed the image on the pusherman website for the orientation on that component, cheers

[Altitude909]

..

Is it not the resistor getting hot? Sorry, I'm not the most electronically minded. I should say I also replaced r49, thanks!

the resistor burning is a symptom of the problem, its burning because something is drawing way more current than its supposed to. Its used as a "fuseistor"

Your rectifier is correct and even if it wasnt, it wouldnt cause what youre seeing, the 4R7 is behind the rectifier. Post a better picture in high resolution

[Sm95uk]

..

Is it not the resistor getting hot? Sorry, I'm not the most electronically minded. I should say I also replaced r49, thanks!

the resistor burning is a symptom of the problem, its burning because something is drawing way more current than its supposed to. Its used as a "fuseistor"

Your rectifier is correct and even if it wasnt, it wouldnt cause what youre seeing, the 4R7 is behind the rectifier. Post a better picture in high resolution

Hey,
I hope this image is slightly better, but if not, let me know and I will take more pics / other angles, cheers!

[Altitude909]

Thats not much better, you need to inspect everything connected to 3v3, something is likely shorted along there. Where did you get your parts? Post pics of the stm103, 8551, and 4208

[Sm95uk]

Thats not much better, you need to inspect everything connected to 3v3, something is likely shorted along there. Where did you get your parts? Post pics of the stm103, 8551, and 4208

Okay, will take better pictures with my friends slr when I can, I will have a look at those parts in the meantime. A lot from Mouser / Digikey, 0603 parts are from a resistor/cap book from Pimoroni, most of the E Caps were from Amazon in a mixed box however, so probably the most suspect aspect of the build. Will get those pics to you asap.

[Altitude909]

where did the STM come from, that looks sanded in the pic and the mold mark isnt right. Does it get hot? You can always go mad scientist, jump the 4R7 resistor and see what blows up..

[Sm95uk]

where did the STM come from, that looks sanded in the pic and the mold mark isnt right. Does it get hot? You can always go mad scientist, jump the 4R7 resistor and see what blows up..

Here are some pics of some of the ICs up close, I will bear that in mind if these look fine to you. Appreciate the help, thankyou!

20230106_174737.jpg (72.1 KiB) Viewed 647 times

20230106_174821.jpg (59.52 KiB) Viewed 647 times

20230106_180047.jpg (39.5 KiB) Viewed 647 times

20230106_180027.jpg (43.27 KiB) Viewed 647 times

20230106_180035.jpg (24.24 KiB) Viewed 647 times

[Altitude909]

nothing jumps out as obvious fake. stm is old. again, put a new 4R7, let it blow, figure out what got hot other than the 4R7

[Sm95uk]

nothing jumps out as obvious fake. stm is old. again, put a new 4R7, let it blow, figure out what got hot other than the 4R7

Legend, thankyou!

[Sinamsis]

I've made some progress trying to flash my uTides II with an ST Link v2. I finally have the STM32CubeProgrammer recognizing the module but I can't get it to flash it. I also have gotten Vagrant up and running and are able to connect to the VM, but when I try to send the command to flash the firmware through Terminal I get this error:

*** No rule to make target `build/tides2_bootloader/tides2_bootloader.hex', needed by `build/tides2/tides2_bootloader_combo.bin'. Stop.

Any idea what's going on? In general something doesn't seem right as I think I should be able to flash it from the STM32CubeProgrammer.

[iLmuCo]

Hey,

i have built a Peaks and it is almost working but not quite ;-)
I could program the chip and when i turn on the module, switches work as intended and for example in lfo mode the on mom switches go on and off depeding on the frequency. When i turn the knob they light up quicker or more slow, as it should be.

BUT: I have no output at the jacks. When i look into the schematics the signal path should be Pin 25, 26, 28 from the STM32 to the DAC on Pin 5,6,7 and from there outputs 3 and 4. Right? I dont have voltages on these outputs of the DAC. What should i measure there? When i measure voltages at the output jacks it shows 8V on both.

Maybe you have any idea or tips, i can try. I had quite some problems soldering the STM32 and maybe something went wrong there. But the chip seem to work, because of the behaviour described above right? Was my first time with such a chip. Branches and Ripples were my first builds and work as they should.

Thank you!!

[Rumble]

I'm attempting to calibrate a Mutated Stages build from Pusherman. I have successfully flashed the module into calibration mode and leds above the buttons and on the sliders are flashing.

I'm following ForestCavers calibration notes however I'm getting 10v's out of output 1,2,3 and 4. I'm getting -8 and -9 out of output 5 & 6. The first 4 output LEDs are not lit and output 5 & 6 are red. Turning the potentiometers don't change the output levels. I am using a small patch lead to take readings.

If I turn the module off and on it loads up and I am able to change modes to get LFO behaviour and turning the pots increases and decreases the speed of the lfo's.

Does anyone know whats going on? Should I troubleshoot the code or the board?

[Rumble]

Hey,

i have built a Peaks and it is almost working but not quite ;-)
I could program the chip and when i turn on the module, switches work as intended and for example in lfo mode the on mom switches go on and off depeding on the frequency. When i turn the knob they light up quicker or more slow, as it should be.

BUT: I have no output at the jacks. When i look into the schematics the signal path should be Pin 25, 26, 28 from the STM32 to the DAC on Pin 5,6,7 and from there outputs 3 and 4. Right? I dont have voltages on these outputs of the DAC. What should i measure there? When i measure voltages at the output jacks it shows 8V on both.

Maybe you have any idea or tips, i can try. I had quite some problems soldering the STM32 and maybe something went wrong there. But the chip seem to work, because of the behaviour described above right? Was my first time with such a chip. Branches and Ripples were my first builds and work as they should.

Thank you!!

Congrats on getting a successful flash of the chip

Do you have 3.3v on pin 1 of the DAC?

You mention having no output at the jacks but also a measurement of 8v.

What mode are you in when taking these readings? ie if you put it in drum mode and send a trig to input 1 you should hear a drum sound. BUT if you are in LFO mode you will not get any sounds as the output only sends CV.

[Altitude909]

Hey,

i have built a Peaks and it is almost working but not quite ;-)
I could program the chip and when i turn on the module, switches work as intended and for example in lfo mode the on mom switches go on and off depeding on the frequency. When i turn the knob they light up quicker or more slow, as it should be.

BUT: I have no output at the jacks. When i look into the schematics the signal path should be Pin 25, 26, 28 from the STM32 to the DAC on Pin 5,6,7 and from there outputs 3 and 4. Right? I dont have voltages on these outputs of the DAC. What should i measure there? When i measure voltages at the output jacks it shows 8V on both.

Maybe you have any idea or tips, i can try. I had quite some problems soldering the STM32 and maybe something went wrong there. But the chip seem to work, because of the behaviour described above right? Was my first time with such a chip. Branches and Ripples were my first builds and work as they should.

Thank you!!

what do you get out of the outputs in calibration mode

[Stef74]

Hi all, new comer on the forum looking for DIY support
Just finished DIY Stages project with stock firmware 1.2 & bootloader
Module seems to operate correctly but wonder how to enter calibration mode to perform offset & gain for DAC / ADC.
Thanks a lot for your support, bye

[forestcaver]

DIY Stages ..... wonder how to enter calibration mode to perform offset & gain for DAC / ADC.

I just replied to your post in your other (original) thread !

[iLmuCo]

Hey,

i have built a Peaks and it is almost working but not quite ;-)
I could program the chip and when i turn on the module, switches work as intended and for example in lfo mode the on mom switches go on and off depeding on the frequency. When i turn the knob they light up quicker or more slow, as it should be.

BUT: I have no output at the jacks. When i look into the schematics the signal path should be Pin 25, 26, 28 from the STM32 to the DAC on Pin 5,6,7 and from there outputs 3 and 4. Right? I dont have voltages on these outputs of the DAC. What should i measure there? When i measure voltages at the output jacks it shows 8V on both.

Maybe you have any idea or tips, i can try. I had quite some problems soldering the STM32 and maybe something went wrong there. But the chip seem to work, because of the behaviour described above right? Was my first time with such a chip. Branches and Ripples were my first builds and work as they should.

Thank you!!

Congrats on getting a successful flash of the chip

Do you have 3.3v on pin 1 of the DAC?

You mention having no output at the jacks but also a measurement of 8v.

What mode are you in when taking these readings? ie if you put it in drum mode and send a trig to input 1 you should hear a drum sound. BUT if you are in LFO mode you will not get any sounds as the output only sends CV.

Thank you for your answer!

Yes, I have 3.28V on Pin 1 of the DAC. The 8V are always on the output in every mode.

So I checked the outputs of both OPA 2171 and they have the 8V at their output pin 1. VEE and VCC is correct on both with -12 and +12V.

[iLmuCo]

Hey,

i have built a Peaks and it is almost working but not quite ;-)
I could program the chip and when i turn on the module, switches work as intended and for example in lfo mode the on mom switches go on and off depeding on the frequency. When i turn the knob they light up quicker or more slow, as it should be.

BUT: I have no output at the jacks. When i look into the schematics the signal path should be Pin 25, 26, 28 from the STM32 to the DAC on Pin 5,6,7 and from there outputs 3 and 4. Right? I dont have voltages on these outputs of the DAC. What should i measure there? When i measure voltages at the output jacks it shows 8V on both.

Maybe you have any idea or tips, i can try. I had quite some problems soldering the STM32 and maybe something went wrong there. But the chip seem to work, because of the behaviour described above right? Was my first time with such a chip. Branches and Ripples were my first builds and work as they should.

Thank you!!

what do you get out of the outputs in calibration mode

Also 8V.

[iLmuCo]

Sorry for the third post in a row but i might have found the problem.
I don`t have continuity from Pin 25 of the ST32 to Pin 5 of the DAC. Pins 26 and 28 have continuity to Pins 6 and 7. I will try to resolder it later and hope for just this and no pcb error.