Now i have 5 minutes of microbit dataset, but it still doesn’t work. I have a warning in the data acquisition section, see below. How to improve it ? Thanks, Julien
Dataset train / test split ratio
×
Training data is used to train your model, and testing data is used to test your model’s accuracy after training. We recommend an approximate 80/20 train/test split ratio for your data for every class (or label) in your dataset, although especially large datasets may require less testing data.
SUGGESTED TRAIN / TEST SPLIT
80% / 20%
Labels in your dataset
Some classes have a poor train/test split ratio: microbit, noise, unknown. To fix this, add or move samples to the training or testing data.
MICROBIT
97% / 3% (5m 4s / 10s)
NOISE
100% / 0% (15m 48s / 0s)
UNKNOWN
100% / 0% (15m 42s / 0s)
Perform train / test split
Use this option to rebalance your data, automatically splitting items between training and testing datasets. Warning: this action cannot be undone.
Do you have any idea why my audio data has Raw features always 0, 0, 0, 0, 0, … I m using the microphone from Samsung A50. I can hear the sound but raw features = 0, 0, 0, 0, 0, 0. I think it is the reason why the audio classification doesn’t work at the end on the micro:bit ? Thanks
This is great. I’m learning a lot and having fun with this project. I am, however, getting an error when following the Docker build instructions (see Feb 13 reply). The error seems to occur on the “RUN python build.py” step - executor failed running [/bin/sh -c python build.py]: exit code: 1. I am using a MacMini with M1 processor. Details are below. I would appreciate any advice. Thanks!
Hello! I am loving this project as I had a microbit v2 lying around already.
I also get the error message when I try to compile on my windows machine. Any ideas how I can fix this? I downloaded ninja and added the folder it is located in, in my windows env path. Also installed python 2.7, latest c-make and the version 9 of the arm tools.
Here is my error message:
C:\data\voice-activated-microbit>python build.py
codal-microbit-v2 is already installed
Set target: codal-microbit-v2
Using target.json (dev version)
Targeting codal-microbit-v2
CMake Error: CMake was unable to find a build program corresponding to “Ninja”. CMAKE_MAKE_PROGRAM is not set. You probably need to select a different build tool.
– Configuring incomplete, errors occurred!
See also “C:/data/voice-activated-microbit/build/CMakeFiles/CMakeOutput.log”.
I am not a programmer, Im a design student, but I do know a bit about computers. So anything you can do to help will be very much appreciated! Thank you
Tried to install docker, but my laptop doesnt have virtualization enabled and I couldnt figure it out unfortunately.
It looks like you are running the docker build command from the C:\WINDOWS\system32 directory rather than from the C:/data/voice-activated-microbit/ directory
Hooray! I managed to get it compiled with your help Jenny.
Im having some problem with it triggering correctly to my keyword though. Maybe I need more/better data? I collected about 5 minutes from 8 different persons. It is definately ”sort of” working though, listening in on its surroundings.
In the youtube tutorial it was stated that you could control things with the microbit using voice activation. I tried for a long time to find resources on how, but I am a bit lost. How could I for instance modify the code so that I can control a relay using one of the output pins?
Say: pin changes state+ a timer for n seconds when microbit recognizes the key word?
I would be very happy if someone could point me in the right direction ! Thanks/J
for instance (not at all sure if this is correct?)
uBit.io.P0.setDigitalValue(1);
uBit.sleep(1000);
uBit.io.P0.setDigitalValue(0)
Also, Is there a way to control microphone gain for the voice activation?
Also still havenr been able to make the word trigger reliably. Im using the word ”data” is there better success with different phonems or wordlenghts etc, or doesnt it matter much?
Hi again, im sorry to ask so many questions but im still having issues, even after reading up on the subject of voice recognition on your webpage. I added a lot more data, recorded about 18 minutes of me and my friends saying the word “DATA” in swedish, and also more of the unknown audio class in case it would help.
The model works fine on the website and If i record test data it classifies correctly over 90% of the time, but not on the microbit.
It sometimes triggers, but most of the times not. Maybe one in four works. I feel like an idiot talking to a microbit that doesnt respond
I tried following the advice to disable moving average like @janjongboom wrote above.
Still no success. Any ideas? Add even more data? Change the keyword? I tried increasing the learning cycles in 100 increments to see if that would make any meaningful difference. I also tried changing the distance to the mic, and changing rooms, power supply (in case there is noise bleeding into the unit from usb power).
Any ideas or tips on how to make this work better would be greatly appreciated. Or am I expecting too much from a microbit? I could of course try another hardware platform, I just happen to have a microbit on hand.
I got it to work! I did not realize it but my changes werent being compiled. I cloned the project into a new folder, added my files, then built with docker (instead of just overwriting my files in the original folder), and now it is much much better at recognizing my keyword. Now I just need to learn how to write pwm to servos and to control a relay for my projects. I should be fairly simple, right?
Is the microbit limited to just one keyword, or can you in theory do two?
Hey community! I keep getting an error message after trying for a long time. I installed the correct GNU ARM I think. Is there a solution for this?
Thanks very much!
I am trying to compile the github repo with the docker and it was working smoothly on a previous build of Codal_Microbit_V2 from landerbilt, but it suddenly stopped building on a latest built for the codal dependencies.
Can someone please help me with this : - Thanks a lot.
Hi, an error with a function named ‘getSamplerate()’ keeps occurring. The required dependencies are installed and discoverable i.e., cmake, arm-none-eabi-gcc, and executing build.py on python 2. Is there a solution for this?
Not 100% sure but by reading the issues, it seems that one getSampleRate() is declared to return int values and the other is declared to return float values.
The idea is very great. I built the model perfectly, but when executing the code, it shows some errors in the program. Please help me fix it. Thank you.
I am building using Docker and I’ve got the same issue. Also I got those 2 errors too.
Can we have an update please ?
They seem like minor errors. If there is something that we can modify in the local file guide us please.
Hi,
I’ve got the same trouble about python build.py.
I’ve been using Docker and I don’t know what to do to solve it.
If someone knows the solution, I’d be grateful for your assistance.
Thanks,
Tulio
I have the same issue on my M2 MacBook when running
‘’‘docker build --platform linux/x86_64 -t microbit_ei_build .’‘’
Help is highly needed! Thank you folks!
but im still having issues, even after reading up on the subject of voice recognition on your webpage. I added a lot more data, recorded about 18 minutes of me and my friends saying the word “DATA” in swedish, and also more of the unknown audio class in case it would help.
