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Frank N. Furter
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Joined: 28/05/2012
Location: Germany
Posts: 947

Posted: 04:59am 04 Jan 2025

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Hello to all,

has anyone had any experience with this rather interesting OFFLINE speech recognition module?
https://www.dfrobot.com/product-2665.html
https://wiki.dfrobot.com/SKU_SEN0539-EN_Gravity_Voice_Recognition_Module_I2C_UART

It has a built-in loudspeaker and recognizes the programmed commands very well. Unfortunately, there is no proper data sheet for it and you have to extract all the information from the sample code!

https://github.com/DFRobot/DFRobot_DF2301Q/tree/master

Unfortunately, this is not very easy if you don't have much (or any) experience in C...

Frank
Edited 2025-01-04 15:18 by Frank N. Furter

mclout999
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Joined: 05/07/2020
Location: United States
Posts: 489

Posted: 09:32am 04 Jan 2025

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Links

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twofingers

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Joined: 02/06/2014
Location: Germany
Posts: 1576

Posted: 11:26am 04 Jan 2025

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Hi Frank,
I'm sure you've read this thread? My post concerns a different module, however. Still available from e.g. Ali. Programming is done in a web interface or in "C". However, programming via the web interface means an undesirable dependency on the manufacturer's decisions. In any case, speech recognition is an exciting topic.

Best regards
Michael

causality ≠ correlation ≠ coincidence

JohnS
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Joined: 18/11/2011
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Posts: 4038

Posted: 12:03pm 04 Jan 2025

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Maybe try Co-Pilot to convert the C.

John

tritonium
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Joined: 16/06/2018
Location: United Kingdom
Posts: 22

Posted: 12:43pm 04 Jan 2025

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Hi

When I saw this got very excited- but as you say there is no 'REAL' manual or data sheet. Their examples are built using libraries which need to be reverse engineered to get to the actual data or protocols sent over the uart connection.
They also seem to have a problem when they start to malfunction after ten minutes use see this https://www.dfrobot.com/forum/topic/323054.
(cant get the hyperlink to work)

They seem to think it needs periodic resetting and can be done automatically over serial- if you can find the magic words....
Might try downloading the libraries to see if i can decode their gobbly gook.

Dave
Edited 2025-01-04 22:49 by tritonium

Frank N. Furter
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Joined: 28/05/2012
Location: Germany
Posts: 947

Posted: 10:54am 05 Jan 2025

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twofingers said I'm sure you've read this thread? My post concerns a different module, however. Still available from e.g. Ali. Programming is done in a web interface or in "C". However, programming via the web interface means an undesirable dependency on the manufacturer's decisions. In any case, speech recognition is an exciting topic.

Thanks Michael! The nice thing about the DF2301Q is that it is addressed via the UART and can therefore also be used with small, old controllers...

tritonium said They also seem to have a problem when they start to malfunction after ten minutes use see this https://www.dfrobot.com/forum/topic/323054.
(cant get the hyperlink to work)

Hi Dave,
thanks for pointing that out, that's pretty stupid of course! I hope that it at least works stable with the pre-programmed commands! You can at least reset the module via UART...

tritonium said Might try downloading the libraries to see if i can decode their gobbly gook.

At least the library is well documented. The required sequence is apparently assembled in the "DFRobot_DF2301Q.cpp" file. All the information you need is actually available in the library - it's just very tedious to pick everything apart.

Frank

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