Hi, Maybe flipping the sensor image will fix this: sensor.set_vflip(1) This was the solution for my problem with april tags and QR-Codes.

@os88 attention the back site, you can see the reserved hole, you can open it, and then pass the Grove cable. [image: 18650c.jpg]

the M5StickV/UnitV burn firmware tutorial https://docs.m5stack.com/#/en/quick_start/m5stickv/m5stickv_quick_start

from m5stack import * from m5ui import * from uiflow import * import hat import unit import hat setScreenColor(0x111111) pbhub0 = unit.get(unit.PBHUB, unit.PORTA) hat_pir0 = hat.get(hat.PIR) label0 = M5TextBox(13, 8, "PIR Hat", lcd.FONT_Default,0xFFFFFF, rotate=0) label1 = M5TextBox(12, 63, "PbHUB", lcd.FONT_Default,0xFFFFFF, rotate=0) label2 = M5TextBox(34, 34, "0", lcd.FONT_Default,0xFFFFFF, rotate=0) label3 = M5TextBox(0, 83, "+Light Unit", lcd.FONT_Default,0xFFFFFF, rotate=0) label4 = M5TextBox(26, 109, "0", lcd.FONT_Default,0xFFFFFF, rotate=0) while True: label2.setText(str(hat_pir0.state)) label4.setText(str(pbhub0.analogRead(0))) wait(1) wait_ms(2)

@volatus I2C # SPI You forgot to use #include <SPI.h> in your arduino code. So the code compiled for I2C interface. Beware using the wrong pins for external SPI deviceon your M5Stack. You may brick your display. Interfacing to an external a SPI peripheral device you should use pins which are not in conflict with the pins used for M5Stack internals, as I already wrote in my comments on SPI Interfacing a few days ago: http://community.m5stack.com/topic/1845/micropython-spi/8 You should keep it as they are saying on my spec sheet for the Heltec ESP32 LoRa board: "Pins used by on board OLED or LoRA must not be used for other purpose unless you know what you are doing ! Accordingly, on the M5Stack you should only use the pins marked in blue.

Thanks for your help guys, I'll give this all a shot!

Hi, Sorry for pulling this olde thread up. I really need an Arduino example on how to read and write I can't seem to find any examples on that. Best regards, Christian

Here is an example how to do it (The PAM8303 chip is mono, the PAM8403 is stereo): https://www.youtube.com/watch?v=xotWNWUh7i4 https://www.xtronical.com/basics/audio/dacs-on-esp32/

we will update the firmware, as soon as possible

@crami25 Thanks for the comprehensive reply. It really helps to deepen my understanding. As you pointed out, I always check the M5 Unit's schematic first to assure the protective resistors when I connect the Units to an ESP developing board.

Perhaps down the line, but currently its only possible to program it in the maixpy ide

Exemple-M5Stack-Basics-bmm150.

waiting more tutorials for unit v

Hello. Please tell me if there is a UnitV circuit diagram? Or, by analogy with other modules, a description of which components, to which GPIO are connected. For example, the GROVE connector is connected to gpio xx and yy, the camera is connected to "...", the buttons are "..." and so on.

not . the RoverC not build-in encoders

@ss4f11 If you had mentioned this previously, sorry, my memory isn't that great. I need to look into finding a walkaround for that for my book but again it on my "To Do" list.

It must be high clock issue on PAHUB. I just tried to hide Wire.setClock(450000) and change the refreshrate of MLX90640 to 4Hz (0x03). It worked well. With PAHUB, it cannot work with high refreshrate (E.g. 8Hz or 16Hz)!!!

@tbe01025 BugC Arduino Example Github:https://github.com/m5stack/M5StickC/tree/master/examples/Hat/BUGC