Hey uhi, i tried your script but unfortunetly i never got it to work. PeakCan shows Error Warning Passive. I tried it with SW 1.00 and SW 1.01 modules. The module draws around 82mA from the 12V Power Supply. I am unable to recieve and send any messages to the module due to the can bus error. I tried different can speeds, changing high and low, but nothing seems to fix the can bus error. I cant imagine both modules are brokenuhi22 wrote: ↑Sun Feb 02, 2025 11:56 am Had a closer look to the Hyundai Ioniq VESS, which may be uses the same concept as the Kona. Looks like these offer good opportunities to add an own sound. The sound samples (for driving, reverse bing and annoying beeeep) are stored in a SPI flash, and played by the Yamaha sound chip in different speeds depending on the vehicle speed. Was able to read the flash and listen to it on the PC with AudacityDid not yet patch the original unit, not sure whether I go this risk before the TÜV date ;-/
Unfortunately there are different software versions flying around, and the VESS which I ordered cheap, with version 1.00, does not play in my car at all.
Results here: https://github.com/uhi22/Ioniq28Investi ... oundSystem
Sound generator possibilities of implementation
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JonasErnst
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Re: Sound generator possibilities of implementation
- uhi22
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Re: Sound generator possibilities of implementation
500kBaud, and you need a termination resistor between the CAN lines. Current consumption looks okay. You could check with oscilloscope whether the CAN talks.
Github: http://github.com/uhi22 --- Patreon: https://www.patreon.com/uhi22
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zippy500
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Re: Sound generator possibilities of implementation
I was running one of these to my Zero EV motorcycle was a very good unit.....till the bike got stolen ..
Re: Sound generator possibilities of implementation
I recently purchased a Soundchaser EVESS from a guy in Sweden (evsoundsystem.com) that has speed referenced sounds from a V8 to a spaceship. I will be going for the more sensible spaceship or turbine! 
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JonasErnst
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Re: Sound generator possibilities of implementation
Yeah today on my drive to work it came to my mind that i should meassure the can bus termination, I added the resistor just now and its working fine. I am looking forward to install this unit to my car, thanks for all the documentation. And thank you for your quick reply
- uhi22
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Re: Sound generator possibilities of implementation
Did you also have success with the software version 1.00 VESS? I was not able to convince it to play. But now managed to copy the SW 1.01 from the good unit, and flash it on the old unit. Now it plays 
Documentation of the update procedure is on github: https://github.com/uhi22/Ioniq28Investi ... controller
Documentation of the update procedure is on github: https://github.com/uhi22/Ioniq28Investi ... controller
Github: http://github.com/uhi22 --- Patreon: https://www.patreon.com/uhi22
- J0hannes
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Re: Sound generator possibilities of implementation
Found myself looking for Hyundai VESS parts and stumbled upon this, the Kona VESS seems to be further hacked
Do I understand this correctly that you can configure this via Rs-232 and there is a command line user interface for the VESS?
Do I understand this correctly that you can configure this via Rs-232 and there is a command line user interface for the VESS?
- uhi22
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Re: Sound generator possibilities of implementation
Interesting. This is a completely different hardware design.
I can only speak for the ioniq unit. This has the pins for a serial, and some related texts in the bootloader. Rest to be found out.
I can only speak for the ioniq unit. This has the pins for a serial, and some related texts in the bootloader. Rest to be found out.
Github: http://github.com/uhi22 --- Patreon: https://www.patreon.com/uhi22
- medo
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Re: Sound generator possibilities of implementation
I don't know if this is modded, but I think it's cool
https://www.instagram.com/p/C3-_tO9yLpZ ... atch_again
https://www.instagram.com/p/C3-_tO9yLpZ ... atch_again
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JonasErnst
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Re: Sound generator possibilities of implementation
Hey, I was unable to play the sound with the 1.00 Unit but my plan was the same as yours to try to copy the FW over to the other unit. I did not have time to try it and I am glad you got it to work. I am really looking forward to integrate this soundgenerator into my build, next step would be creating a module for zombieverter but I need to look into this as i did not create custom code for it yetuhi22 wrote: ↑Wed Feb 19, 2025 9:51 pm Did you also have success with the software version 1.00 VESS? I was not able to convince it to play. But now managed to copy the SW 1.01 from the good unit, and flash it on the old unit. Now it plays
Documentation of the update procedure is on github: https://github.com/uhi22/Ioniq28Investi ... controller
- J0hannes
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Re: Sound generator possibilities of implementation
I ordered today a Kona VESS (25€ with shipping)
I'll post some updates once I have it in hand and have toyed around with it
I'll post some updates once I have it in hand and have toyed around with it
- medo
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Re: Sound generator possibilities of implementation
Now I have received the Taycan control unit from the USA, I have connected everything according to the circuit diagram, but there are no CAN messages, the power consumption is about 400mA, Does anyone know the exact pin assignment? I can't figure it out from the circuit diagram.
edit, i forgot to apply a 120ohm resistor, now we have 3 Messages, but i don´t know what now and a log file
edit, i forgot to apply a 120ohm resistor, now we have 3 Messages, but i don´t know what now and a log file
- J0hannes
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Re: Sound generator possibilities of implementation
As promised, an update once I got around to look at this
BMW F30 shifter and Kona VESS are both on CAN2. Neither has a termination resistor, so that is needed for communication to work in this setup.
Drive and Reverse sounds work
Next need to test together with motor to verify that volume changes depending on motor speed...
I have a VESS only branch that I have tried to keep synced with Damien's Master branch.
BMW F30 shifter and Kona VESS are both on CAN2. Neither has a termination resistor, so that is needed for communication to work in this setup.
Drive and Reverse sounds work
Next need to test together with motor to verify that volume changes depending on motor speed...
I have a VESS only branch that I have tried to keep synced with Damien's Master branch.
Re: Sound generator possibilities of implementation
I am disappointed by the content of this thread. I was hoping for a software to use the inverters as an audio power amplifiers. 50-200kw of speaker power would be hella bonkers.
Sorry for offtopic
Sorry for offtopic
- ElectricBMW
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Re: Sound generator possibilities of implementation
If i drive electric it will be somthing like "The Jetsons" sound.
Or some SciFi Turbine sound.
Don´t cheap out on Sound design!
Or some SciFi Turbine sound.
Don´t cheap out on Sound design!
"When is the best time to plant a tree?
20 Years ago!
When is the second best time to plant a tree?
Today!"
20 Years ago!
When is the second best time to plant a tree?
Today!"
- GregFordyce
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Re: Sound generator possibilities of implementation
I want the sound of a horse trotting as my sound generator. It's on my to-do list but quite close to the bottom.
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Zombieverter - Full 80kW Leaf stack
24kWh & 30kWh Leaf batteries in custom battery box under van
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arber333
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Re: Sound generator possibilities of implementation
What is wrong with V12 Merlin or Allison engineGregFordyce wrote: ↑Sat Apr 18, 2026 9:30 pm I want the sound of a horse trotting as my sound generator. It's on my to-do list but quite close to the bottom.
Or Pratt and Whitney Twin Wasp
Or for that matter Napier Sabre bass tone