Hi, Now I got one solution by myself.
We can build a private environment of K210 machine learning on Goggle colaboratory.
Of course we can share.

I wrote an article here.
This can be used as an another way of V-Training for M5StickV and M5UnitV.

Qiita

• https://qiita.com/Nabeshin/items/d526a94b8f3be85bbb05

Goggle colaboratory

• https://colab.research.google.com/drive/1UdQV5nQMQy1ckJP0qdS3kS7sW6sEQyzs#scrollTo=prOt_VofnYCo

Thank you.

@Zontex
Hi, I tried again now but It seems like still having problems...

Can I build same environment in my computer?
What should I install for this machine learning?

If you can point the GitHub URL, Please let me help.

Regards.

@Zontex
Now I can upload files. But Training always fails with this error.

CONTENT: Unexpected Error Found During Triaining, A target array with shape (128, 6) was passed for an output of shape (None, 7) while using as loss categorical_crossentropy. This loss expects targets to have the same shape as the output.

I uploaded following data.

• 6 classes training data
• Each class has 90 files(85 files in train folder. 5 + 1 files in each valid folder)
  • At first, using the result folder created by UnitV_boot_v1220.py, I got Error: Lake of Enough Valid Dataset, Only 30 pictures found, but you need 35 in total.
  • Maybe Lake of is typo of Lack of I think.
  • So I moved 1 file manually from train folder to valid folder for each class.(Then I made 5 + 1 files in each valid folder.(Total 36 in valid folder)
  • Then that goes fine.
• But now I got that error about categorical_crossentropy.
  • I tried several cases and got same kind of error.
  • For 6 class case: A target array with shape (128, 6) was passed for an output of shape (None, 7)
  • For 4 class case: A target array with shape (64, 4) was passed for an output of shape (None, 5)

I'm not sure but I think it's because,

• At model.add(Dense(X)) script, X should be the same number of uploaded class folders of each request.
• But maybe it is over counted from exact one in your script.
  • https://github.com/keras-team/keras/issues/3237

Do you have any idea for fix it?

Regards.

Thank you.
This is not serious at all.
I will try it again in next year.

Have nice holidays!!!

Thank you!

I'm trying to control 130RA motors using GoPlus (not GoPlus2).
But it rotates only one direction.
Anyone have same problem??

I'm using,

• GoPlus controlled with M5Stack Fire
• 130RA motors( https://akizukidenshi.com/download/ds/mercurymotor/FA-130RA-2270_20190306.pdf )
• External stabilized power supply 5.5V

My Investigation are following.

I uploaded this simple code to my GoPlus module.

//GoPlus Motor Debug code for Atmega328
const int IN_0 = 9;
const int IN_1 = 10;
const int IN_2 = 11;
const int IN_3 = 3;

void setup() {
  pinMode(IN_0, OUTPUT);
  pinMode(IN_1, OUTPUT);
  pinMode(IN_2, OUTPUT);
  pinMode(IN_3, OUTPUT);
}

void loop() {
  digitalWrite(IN_0, LOW);
  digitalWrite(IN_1, LOW);
  digitalWrite(IN_2, LOW);
  digitalWrite(IN_3, LOW);
  delay(2000);
  digitalWrite(IN_0, HIGH);  //M0  ---NG--------
  digitalWrite(IN_1, LOW);
  digitalWrite(IN_2, HIGH);  //M2  --OK: but rotates Intermittently--
  digitalWrite(IN_3, LOW);
  delay(2000);

  digitalWrite(IN_0, HIGH);
  digitalWrite(IN_1, HIGH);
  digitalWrite(IN_2, HIGH);
  digitalWrite(IN_3, HIGH);
  delay(2000);
  digitalWrite(IN_0, LOW);   //M0  --OK: but rotates Intermittently--
  digitalWrite(IN_1, HIGH);
  digitalWrite(IN_2, LOW);   //M2  --NG--------
  digitalWrite(IN_3, HIGH);
  delay(2000);

  digitalWrite(IN_0, LOW);
  digitalWrite(IN_1, LOW);
  digitalWrite(IN_2, LOW);
  digitalWrite(IN_3, LOW);
  delay(2000);
  digitalWrite(IN_0, LOW);   //M0  --OK: rotates Continuously--
  digitalWrite(IN_1, HIGH);
  digitalWrite(IN_2, HIGH);  //M2  --OK: rotates Continuously--
  digitalWrite(IN_3, LOW);
  delay(2000);

}

Only following case works well, but others don't...

  digitalWrite(IN_0, LOW);   //M0  --OK--
  digitalWrite(IN_1, HIGH);
  digitalWrite(IN_2, HIGH);  //M2  --OK--
  digitalWrite(IN_3, LOW);

• The voltage(HIGH / LOW) of IN_0 to IN_3 of LV8548 are correct for all cases.
• I replaced to another GoPlus module, but it was exactly the same.

To drive 130RA motor, GoPlus is too weak??

Hello, Is the V-Training Service working now??

I think its tasks are stopped from 2020/12/24....

Thanks.

I uploaded files to the V-Training service but it seems not running....
Currently Task No.6(2020/12/29) is mine,
but task No.1 which was uploaded in 2020/12/24 still remaining.

Anyone can help please?

http://v-training.m5stack.com

Thank you.