Project:Music Station: Difference between revisions
NitramLegov (talk | contribs) (Added some notes.) |
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|initiator=[[User:NitramLegov|Martin]] | |initiator=[[User:NitramLegov|Martin]] | ||
|team=[[User:NitramLegov|Martin]] | |team=[[User:NitramLegov|Martin]] | ||
|tools=[[Raspberry Pi]] | |tools=[[Raspberry Pi]] | ||
|materials=[[Film Faced Plywood|film faced plywood]] | |||
|software=[https://github.com/NitramLegov/Musicbox Musicbox] | |software=[https://github.com/NitramLegov/Musicbox Musicbox] | ||
}} | }} | ||
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== Software == | == Software == | ||
The system is based on a regular Rasbian Lite installation, which gets adjusted by the installation script in the following way: | The system is based on a regular Rasbian Lite installation, which gets adjusted by the installation script in the following way: | ||
# Installation and configuration of mopidy and useful extensions | |||
# Installation and configuration of bt_speaker | |||
== Hardware == | == Hardware == | ||
From an electronics perspective, the system uses a | From an electronics perspective, the system uses a [[Raspberry Pi]] in combination with a [http://www.suptronics.com/xseries/x400.html X400 HAT]. | ||
It gets powered by a couple of | It gets powered by a couple of lead batteries. | ||
The case is built with | The case is built with [[Film Faced Plywood|film faced plywood]]. | ||
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Since the system is powered by batteries, there is a possibility of sudden power outages due to a lack of remaining battery power. Therefore, there should be a circuit which either switches from one battery to another and then possibly sends a shutdown signal to the system. | Since the system is powered by batteries, there is a possibility of sudden power outages due to a lack of remaining battery power. Therefore, there should be a circuit which either switches from one battery to another and then possibly sends a shutdown signal to the system. | ||
Note: This is only needed for | Note: This is only needed for Raspberry Pi based systems. | ||
===Different speaker=== | ===Different speaker=== | ||
So far the system is based on [http://www.visaton.de/en/products/coaxial-speakers/px-10-4-ohm Visaton PX-10 speakers]. Since they | So far the system is based on [http://www.visaton.de/en/products/coaxial-speakers/px-10-4-ohm Visaton PX-10 speakers]. Since they don't provide ''[https://de.wikipedia.org/wiki/Thiele-Small-Parameter Thiele/Small parameters]'', I didn´t calculate the needed box volume and just made a 12 liter box for each speaker, which is most likely way too much. | ||
The next version should use different speakers where the ideal box volume is known. | The next version should use different speakers where the ideal box volume is known. | ||
| Line 38: | Line 39: | ||
===Make a workshop out of it=== | ===Make a workshop out of it=== | ||
Once the new design is complete and tested, there could be a | Once the new design is complete and tested, there could be a [[seminar]] in which we teach others to build their own bluetooth speaker. | ||
===Design a 3D-Printed front for the controls=== | ===Design a 3D-Printed front for the controls=== | ||
[[Category:Audio]] | [[Category:Audio]] | ||
[[Category:Electronics]] | |||
[[Category:Raspberry Pi]] | [[Category:Raspberry Pi]] | ||
[[Category:Woodworking]] | |||
Revision as of 16:08, 22 August 2018
| ProjectInfoBox Music Station | |
|---|---|
| |
| Status: | |
| Initiator: | Martin |
| Team: | Martin |
| Materials Used: | film faced plywood |
| Tools Used: | Raspberry Pi |
| Software Used: | Musicbox |
Since existing bluetooth speakers do not provide enough power, Martin decided to build custom speakers for usage on the camping ground of different festivals.
Software
The system is based on a regular Rasbian Lite installation, which gets adjusted by the installation script in the following way:
- Installation and configuration of mopidy and useful extensions
- Installation and configuration of bt_speaker
Hardware
From an electronics perspective, the system uses a Raspberry Pi in combination with a X400 HAT. It gets powered by a couple of lead batteries.
The case is built with film faced plywood.
Further Improvements
Shutdown board in case of power losses
Since the system is powered by batteries, there is a possibility of sudden power outages due to a lack of remaining battery power. Therefore, there should be a circuit which either switches from one battery to another and then possibly sends a shutdown signal to the system.
Note: This is only needed for Raspberry Pi based systems.
Different speaker
So far the system is based on Visaton PX-10 speakers. Since they don't provide Thiele/Small parameters, I didn´t calculate the needed box volume and just made a 12 liter box for each speaker, which is most likely way too much.
The next version should use different speakers where the ideal box volume is known.
Check possibility to use a ESP32
On the last Festival, I was mainly using the bluetooth functionality. Playback using Mopidy as well as the Wifi Hotspot was not really used. For bluetooth playback, a ESP32 should be enough. This should lower the needed power significantly.
Make a workshop out of it
Once the new design is complete and tested, there could be a seminar in which we teach others to build their own bluetooth speaker.
