whaleboard
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- Joined
- Dec 9, 2020
- Messages
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It's my first post on ASR, I've been a long time lurker. I'm amazed by the community on here, and figured some of you guys might be able to help me with a project.
I intent to build an equivalent of the Chord Poly / 2go streamers using a Raspberry Pi Zero W, hooked to an E1DA 9038S via the onboard micro-usb of the Pi. I'm not too interested in the streaming part of the Poly / 2go, but I highly like the possibility to use it as a portable screenless player with a micro-SD card on which to plug my headphones and control it with my phone. I did not buy one because I don't care much for boutique products, and I've been very happy with my E1DA 9038S gen3 plugged into my phone.
The idea arose that I could design a device that would provide the same function as the Poly-as-screenless-player, and that I could do it with a low consumption microcontroller such as the Pi Zero W, which only draws about 80mA when idle. I would make the Pi into a Roon endpoint, add a second Micro-SD slot to expand its memory to 512go, put my music collection on there, and use an app on my phone to access it remotely by having the Pi connect to my phone WiFi hotspot.
I did preliminary research, but ended up running into informations that might compromise the feasibility of my project. As I intend to have the Pi run on a battery pack (LiPo battery), it seems like the proximity of the E1DA 9038S and the power supply of the Pi might create unwanted noise that would end up in the signal running into my earphones. I have asked around but never could get a clear answer: is there a way to shield the PSU from the DAC? Will the DAC balanced output solve my issue on itself, filtering the noise before it reaches my ears?
The end device, if it were to work, would be able to play continuously for up to 8 hours, hold up to 1to of music. The most exciting part of this project is the design. I'm a design and visual arts major, and designing the case, the look and feel of it from the ground up is the most exciting part to me. I have a lot of ideas on how to improve the usability and practicality of such a device. Anyway.
If any of you have any kind of experience with something analogous to my project, or would like to present his/her musings about electromagnetic interference, shielding, the back digital noise of the Pi board, any help would be more than welcomed!
I intent to build an equivalent of the Chord Poly / 2go streamers using a Raspberry Pi Zero W, hooked to an E1DA 9038S via the onboard micro-usb of the Pi. I'm not too interested in the streaming part of the Poly / 2go, but I highly like the possibility to use it as a portable screenless player with a micro-SD card on which to plug my headphones and control it with my phone. I did not buy one because I don't care much for boutique products, and I've been very happy with my E1DA 9038S gen3 plugged into my phone.
The idea arose that I could design a device that would provide the same function as the Poly-as-screenless-player, and that I could do it with a low consumption microcontroller such as the Pi Zero W, which only draws about 80mA when idle. I would make the Pi into a Roon endpoint, add a second Micro-SD slot to expand its memory to 512go, put my music collection on there, and use an app on my phone to access it remotely by having the Pi connect to my phone WiFi hotspot.
I did preliminary research, but ended up running into informations that might compromise the feasibility of my project. As I intend to have the Pi run on a battery pack (LiPo battery), it seems like the proximity of the E1DA 9038S and the power supply of the Pi might create unwanted noise that would end up in the signal running into my earphones. I have asked around but never could get a clear answer: is there a way to shield the PSU from the DAC? Will the DAC balanced output solve my issue on itself, filtering the noise before it reaches my ears?
The end device, if it were to work, would be able to play continuously for up to 8 hours, hold up to 1to of music. The most exciting part of this project is the design. I'm a design and visual arts major, and designing the case, the look and feel of it from the ground up is the most exciting part to me. I have a lot of ideas on how to improve the usability and practicality of such a device. Anyway.
If any of you have any kind of experience with something analogous to my project, or would like to present his/her musings about electromagnetic interference, shielding, the back digital noise of the Pi board, any help would be more than welcomed!