M5Stack Community

lukasmaximus

Hi All, I'm Luke from the UK. I've been living in Shenzhen China for the past 6 or so years.
During that time I've learnt a lot about electronics, programming and manufacturing just
from being in Shenzhen and being curious.

I now work for M5Stack full time. I mainly focus on promoting M5Stack as a tool for the
STEM classroom. However being a tinkerer I'm always happy to mess around with our
devices and see what I can create. I feel M5Stack has lowered the barrier for me to do
otherwise complex projects and it has given me a real motivation to learn Python.

My coding skills are still not great but I manage to get by and hope we can foster a spirit
of sharing in this community where we can all learn from each other

Best

Luke

lukasmaximus

If you had taken the time to try and combine the code I gave you for the AP connection and the webserver code from my hackster project, you'd find it wasn't that hard. Even a guy with my limited abilities was able to bust out a quick concept in a few minutes.

from m5stack import *
from m5ui import *
from uiflow import *
import network

try:
    import usocket as socket
except:
    import socket

def web_page():
    html = """<html><body>M5Stack AP Server</body></html>"""
    return html

ap = network.WLAN(network.AP_IF)
ap.active(True)
ap.config(essid='ESP32Luke')
ap.config(authmode=3, password='123456789')
lcd.clear()

response = None
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.bind(('192.168.4.1',80))
s.listen(5)

while True:
    conn, addr = s.accept()
    request = conn.recv(1024)
    request = str(request)
    print ('Content = %s' % request)
    lcd.print('Content = %s' % request,0,50,0xffffff)
    if ap.isconnected() == True:
        lcd.print('connected',0,0,0xffffff)
    else:
        lcd.print('not connected',0,0,0xffffff)
    response = web_page()
    conn.send('HTTP/1.1 200 OK\n')
    conn.send('Content-Type: text/html\n')
    conn.send('Connection: close\n\n')
    conn.sendall(response)
    conn.close()

lukasmaximus

@ken57093 From your picture it looks like the baud rate maybe set wrong on your serial monitor. It should be 115200 baud

lukasmaximus

My apologies guys, I presumed you were using the m5go or fire as I am. If you are using the gray or black core models you will need to use jumper cables to attach the angle sensor to the pins on the bottom of the core as shown in this picture. it is not possible to connect the angle sensor to 22 or 23 as they are digital inputs, for the angle sensor we need an analog input or ADC (analog to digital converter) pin, so this is only possible on pins 35 and 36. try to connect as I show in these pictures and try again, it should display the numbers on both the serial monitor and the screen.![](http://imagehosting.biz/image/6ut
http://imagehosting.biz/image/6u0)

lukasmaximus

To my understanding the fonts supported by micropython are bitmap fonts and are thus unscalable. However there are bigger and smaller sizes of some of the fonts on the M5 for instance the dejavu font has 12pt, 18pt and 24pt.

You can set the font by calling the command
lcd.font(lcd.FONT_DejaVu24)

micropython only supports .fon files an otherwise outdated font format. I managed to find a handful of other .fon fonts and put them in the fonts folder in the m5's flash. However thats not enough to use those fonts, they need to be setup in whichever script relates to the font, and I have not found it yet, no mention in the lcd module of the fonts.

I will keep trying to add more fonts and if I have any progress I will report my findings here

lukasmaximus

@komikoni Hi and sorry for the late reply. I tested myself and you are correct the lcd.qrcode is missing from the m5cloud firmware. I had a look in the REPL and noticed it was missing.
see this screenshot https://ibb.co/njC2aA

As the small development team we have has been fully focusing its efforts on Ui flow firmware of late I cannot foresee the m5cloud firmware being updated any time soon.

I was wondering since uiflow is more feature rich than cloud now I was wondering why you prefer cloud over uiflow

I'm sure you already figured it out but the lcd.qrcode command is used in this way

lcd.qrcode('insert web url here', xposition, yposition, scale factor)

for example

lcd.qrcode('https://microsoft.com', 72, 32, 176)

hope that helped, I will look into the problem to see if there are any alternative solutions

lukasmaximus

Thanks for pointing it out, I had found this bug recently, basically the block ignores whatever you put in the radius position, but as you say it can be corrected in python.

lukasmaximus

Your cries are heard. The forum will be getting an overhaul pretty soon. Thanks for your patience

lukasmaximus

Glad it worked, Merry christmas bud :p

lukasmaximus

not sure thats even available in the python driver for the sticks screen yet. Will make a note of that though thanks

lukasmaximus

Hey @ajb2k3

lcd.setRotation() requires a number 0-3 in the parentheses for each orientation, and it seems to clear the screen every time it rotates. I found I could print text in all 4 orientations of the screen if I used the print command after set Rotation. like so:

lcd.setRotation(3) lcd.print('hello',100,100,0xffffff)
hope that answers your question. I'm back from christmas hols now and i've seen you've been busy
working on your own manual for the m5stack, awesome stuff, I'd love to connect with you and see how we can cooperate on a manual my email is luke@m5stack.com

lukasmaximus

Just a caveat guys, beware that some vendors of the grove cables have the yellow and white wires switched so if you find your units aren't functioning correctly remember to check the cables first.

lukasmaximus

The fonts used on the m5stack are bitmap fonts and therefore are not scalable, they are whatever size they were converted in. A while back on our forums one of our users loboris who is an active developer in the micropython community developed a cool tool to convert any font file in any size you want to a .fon bitmap font format, you cant find it here http://forum.m5stack.com/topic/388/cahnge-font-size-in-python/20

lukasmaximus

For arduino you should be able to use this,
dacWrite (25,0);

there will still be a tiny sound, but barely audible

lukasmaximus

@mawg the original stick can be purchased via the following links:
https://www.aliexpress.com/store/product/M5Stack-Official-New-M5Stick-Mini-Development-Kit-ESP32-1-3-OLED-80mAh-Battery-Inside-Buzzer-IR/3226069_32994893797.html?spm=2114.12010615.8148356.13.25ba781bqWZV2X

https://m5stack.com/collections/m5-core/products/m5stack-official-new-m5stick-mini-development-kit-esp32-1-3oled-80mah-battery-inside-buzzer-ir-transmitter-mpu9250-optional

The main differences between the stick and stick c are that the stick c has a smaller screen but it is color opposed to the monochrome oled of the original, the power management chip is different, there are a bunch more sensors added etc.. for a detailed comparison you can check the docs pages for both the stick and the stick c

https://docs.m5stack.com/#/en/core/m5stick
https://docs.m5stack.com/#/en/core/m5stickc

lukasmaximus

The video @ajb2k3 was referring to is here https://www.youtube.com/watch?v=Y9pOWgsNgKk&t=73s hope it helps

lukasmaximus

Done http://forum.m5stack.com/category/33/m5stick-v

lukasmaximus

Hi @Mati thanks for your suggestion. Do I understand correctly that you wish to have a feature where the user can define their own proxy server to host their own firmwares?

lukasmaximus

Hey @imageicon I doubt we will see ssl encryption on the site anytime soon. In the meantime I suggest you try to use micropython as you said. Andries spies has a great video on how to secure your esp32 device with ssl https://www.youtube.com/watch?v=Wm1xKj4bKsY and rui santos of random nerd tutorials has a bunch of great micropython IoT tutorials such as this one https://randomnerdtutorials.com/micropython-mqtt-esp32-esp8266/ Let us know how you get on

Best posts made by lukasmaximus