Lessons and Guides

• 

  HOWTO: M5Stack with GPS, GSM and LoRa, all at the same time
  • Rop

  11
  4
  Votes
  11
  Posts
  23430
  Views

  

  I've updated the post and the demo code inside it to show the fix of pulling up the CS pin on the LoRa board before initialising the screen to prevent the screen from staying white.
• 

  Lesson 14. UI Flow. Hello M5 UI Flow
  • Dimi

  14
  1
  Votes
  14
  Posts
  48704
  Views

  A

  @m5-docs This link points to a " page not available yet" message
• 

  Can I keep using Arduino IDE after burning UIFlow?
  • Marelli7

  2
  0
  Votes
  2
  Posts
  167
  Views

  

  Yes and no. UIFlow uses micropython which runs off the controller. Arduino uses a C/C++ cross which wipes the micropython each time.
• H

  M5 tough remove touch buttons
  • HansDia95

  7
  0
  Votes
  7
  Posts
  1410
  Views

  C

  @hansdia95 I am running into problems with using button.hide() Can you please provide an example of your usecase? Perhaps I just have a syntax error. I can not find much informaiton on this other than the writeup on github (that provides little informaiotn on this)
• P

  How to read Standard RC signal
  • pattiuak

  8
  0
  Votes
  8
  Posts
  8320
  Views

  H

  Method 1: As far as I know the pulse goes from 1ms to 2ms (1.5ms is middle position). It should be possible to "analogify" or mathematically say "integrate" the PWM signal using a R-C combination on the input pin and read the voltage from this. But the voltage level will be low due the duty cycle which goes from approx. 1:20 (1ms/20ms) to 1:10 (2ms/20ms). From 5V full scale you read 0.25V to 0.5V. You may add an analog OPAMP amplify it to 5V. This method will slow down the reaction time a little bit Method 2: Before doing the Method 1 it may be less effort to write it in Arduino and use either a PWM read library or use a interrupt to measure the pulse width. You can also read the low time to determine if the input signal is valid or not eg. to detect signal loss. Method 3: This is the simple but ugly workaround! Add a small Servo to your signal and drive a potentiometer which ist then read by the M5 analog input.
• 

  Lesson 16. LORA. SignalMeter
  • Dimi

  2
  0
  Votes
  2
  Posts
  3840
  Views

  S

  Thank you for this awesome tutorial. I've got my copper wire on order, and am looking forward to putting it together. =D Thanks to some brilliant recent inventions, there's now antenna analysers for $50, called "NanoVNA". You can use them to perfectly tune the J Pole antenna, so as much of the transmit power as possible leaves the antenna. https://www.youtube.com/watch?v=QJYeFpiqY8c
• S

  NEW : UIFlow and M5Stack tutorial on youtube channel
  • Serge

  2
  2
  Votes
  2
  Posts
  1530
  Views

  

  @serge J'ai déjà regardé toutes tes vidéos. Je suis ravis de voir des tuto sur l'utilisation d'UiFlow, c'est excellent pour les nouveaux utilisateurs de M5stack. Encore Merci !
• B

  USB communication
  • brvus76

  4
  0
  Votes
  4
  Posts
  2040
  Views

  

  Hello @brvus76 I don't really know why the communication might be slow. I can only guess that UIFlow firmware maybe has some safeguards in place to prevent serial from flooding the line. I guess that your software on the PC manipulates the control lines (CTS, etc.) on the serial port in a way which triggers the auto download / reset mechanism in M5Core2. Unless there is some setting in your software to configure that behavior I don't think there is much you can do. Thanks Felix
• M

  HOWTO: Save M5GO Battery
  • MK0821

  1
  0
  Votes
  1
  Posts
  1158
  Views

  No one has replied

• G

  Turn OFF m5core programmatically in UIFlow?
  • ganeyvim

  6
  0
  Votes
  6
  Posts
  4150
  Views

  

  There was a change to the way the power control chip in the cores and only some are able to programmatically control the chip.
• G

  Delete stock *.py apps from M5S-Core
  • ganeyvim

  4
  0
  Votes
  4
  Posts
  3002
  Views

  G

  Nope...
• B

  Ui flow waveform generation
  • bobitto123

  1
  0
  Votes
  1
  Posts
  1732
  Views

  No one has replied

• 

  Lesson 1.2.1. LCD. How to create image array
  • Dimi

  15
  1
  Votes
  15
  Posts
  33795
  Views

  

  @mikemoy Oh! Sorry. You can download this app here: https://ru.m5stack.com/downloads/Image2Code.exe
• N

  Cannot GET DAC to play sine wave on speaker on Core2
  • nicenemo

  3
  0
  Votes
  3
  Posts
  3118
  Views

  N

  @felmue Thanks! So then I can add an external speaker or stick a wire on it and use that as the antenna of an AM transmitter ;) like in this video: https://www.youtube.com/watch?v=lRXHd3HNzEo
• T

  I would like to know how to extract the data read from UART to display at each point in the M5 Stack LCD using Blockly.
  • TEERAPON

  3
  0
  Votes
  3
  Posts
  4014
  Views

  D

  very helpful example - thanks!
• R

  Advanced pins programig help!
  • RB 0

  6
  0
  Votes
  6
  Posts
  5111
  Views

  R

  Gpio 36 don't have any internal pullup, so code generated in uiflow may fail and throw error (try to set non existing internall pullup or pulldown). You should connect to device by serial terminal and observe the messages. You also should use a resistor with values in kilo ohms eg. 4.7kohm or 10kohm esp32 pinout reference: https://randomnerdtutorials.com/esp32-pinout-reference-gpios/
• R

  How to navigate between screen using buttons
  • RB 0

  3
  0
  Votes
  3
  Posts
  3446
  Views

  R

  That was really helpful thank you a lot!
• T

  Delete apps from M5S-Core
  • teiafra

  5
  0
  Votes
  5
  Posts
  5628
  Views

  

  @teiafra Great tip! I always forget about the resource manager. That is another way to remove apps from the device.
• M

  Saving and reusing variables?
  • ManuXD32

  7
  0
  Votes
  7
  Posts
  6929
  Views

  M

  @world101 thank you a lot!!!
• R

  How to used V-training yolo3????
  • ruvic101

  4
  0
  Votes
  4
  Posts
  3784
  Views

  

  @ruvic101 use the last version firmware. （you could find it in this page :https://docs.m5stack.com/#/en/quick_start/m5stickv/m5stickv_quick_start） also , for the time being the yolov3 function is unstable . even you loading success the model and runing. It may still happend memory not enough