![]() ![]() This would require all the CE/EMC/RoHS/WEEE certification processes eating a lot of money. ![]() Please note: The current laws and regulations in the EU make it impossible to sell ready-to-run boards. Regarding the SMD stuff: I think we could arrange something like mounting the semiconductors that you only have to do the resistors and capacitors. I think, if you assume 5-10€ per PCB for low quantities, you are on the save side. PCB prices depend on quantities much more then the components. Mainboard: ~90€ (without the DSP option it becomes cheaper)īoth prices do not include any quantity discount. Here are some prices for the components per board: I am very happy that there is (still) interest in this project after a so long R&D time. Therefore, I am planning to publish the project on github under a open hardware license.Īnyway, if there is enough interest we can organize a group buy of the already existing boards. However, I'ld like it to see that you start designing your own expansion boards. I think I'll make an ADAT board for it next. Of course some more expansion board are needed (AES, ADAT etc.). I haven't tested this yet, but I will soon.Įdit: It does work with the usbaudio2 driver of Windows 10 together with asio4all. For Windows you will need one of these open source ASIO drivers. Since the USB implementation is UAC2 it works driverless for macOS and Linux. Since this project has a strong connection to the freeDSP project the expansion headers use the freeDSP I2S expansion header pinout.Ĭurrently I am busy with building the next ADC/DAC board to expand the setup to 16 I/Os. picture) I have connected my new ADC/DAC board with 8 balanced audio inputs and 8 balanced audio outputs utilizing AKM4458 and AKM5558. To this interface board you can connect up to 32 inputs and 32 outputs. This can be easily programmed by SigmaStudio. The MachXO2 either routes an audio stream to the DSP or to the expansion headers. All audio streams are routed to a MachXO2 for signal distributing/routing. In a first version of this board I tried to implement the UAC2 stuff on a generic MCU, now I switched over to XE216 by XMOS which turned out to be the cheaper solution. USB connection for UAC2 operation exposing 32 inputs and 32 outputs to the computer. The project "Infinitas" still incorporates the modular design (see picture). I went a long way, did a lot of research and development and now the dream came true: My DIY multichannel USB audio interface is alive! Actually it is the descendant of my earlier AD/DA-project years ago. ![]()
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