RasPi Zero with reSpeaker 2-mic HAT seems a fairly popular option for a satellite, so I’m trying it myself.
Audio processing and AI is compute-intensive, and lets face it - the RasPi Zero isn’t the fastest processor. So it makes sense to minimise what is running on the zero.
- This machine will be dedicated to Rhasspy satellite only.
- only Audio Recording, Audio playing and Wake word detection should run on the zero. Everything else is off-loaded to the base station (where training is shared among all the satellites)
- use Raspberry Pi OS lite, to eliminate xwindows and accessories
But is there any point to Docker on a dedicated machine ???
Also, what would be the best method of getting the rhasspy_armel.deb file onto the RasPi Zero ?
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Download onto PC and copy into microSD card (along with wpa_supplicant.conf and SSH) when making the Raspberry Pi OS image ? is there enough free space before the filesystem is expanded ?
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Download on PC and copy via a USB pendrive … but that requires user to have a microUSB to USB OTG adaptor cable ?
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Remove microSD card from the zero and insert in PC. Copy file to microSD (now that filesystem is expanded) and then return microSD to RasPi zero ?
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Is there a location where curl could easily download from ? The URL in the HTML page which actually does the download is rather long (so easy to mistype)
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Configure RasPi zero as a USB gadget ? Assumes user already has a USB to microUSB cable (eg that they have an android phone).
After more research I think the best answer for occasional use is…
- SCP, because it is already active as part of SSH
No. Docker is the simplest option to get started.
But running it native on a dedicated zero is a good option
This, as you already found out by yourself 