The HX711 and loadcell don't necessarily return a linear a value. It is more likely to be a curve.. the nature of materials. You can create a variable and factor all your read values by this amount. For example in your case 500/268 = 1.87... So assign this value to your variable and multiply you readings by this amount. This will be approximate and it will vary for different weight ranges but you can keep refining it until you are happy. You can extend this method over various weight ranges and write conditional statements to apply different corrections for different ranges. Or if you have the smarts you can write a formula for the curve and apply it to your read values.

Hey I am thinking about buying the m5paper and I hope someone here can answer my question. How much current does the board use in sleep? Or maybe the more important question is the following. If I want to develop something like a weather station. And update the display once every 10min, 30min or every hour. And between that the device is sleeping. How long could the battery last? I don't want exact figures. What I need is some rough estimate like 1week, 1month or whatever. Would be great if someone knows more and can help

@kevindtimm There is such a thing, all of the sketches appear to be on the M5Paper github pages

On Arduino using the M5Stack (in my case the Gray version) pin 21 is the pin to pass on to FastLed. For M5StickC it is pin 32. That the M5Stack shows a bright white light for the first LED seems to occur when one also uses the M5.Power.begin() command. This piece of code should work on both devices adjusted for the device in use: //#include <M5StickC.h> #include <M5Stack.h> #include "FastLED.h" CRGB leds[15]; void setup() { M5.begin(); FastLED.addLeds<NEOPIXEL, 21>(leds, 15); // M5Stack Gray //FastLED.addLeds<NEOPIXEL, 32>(leds, 15); // M5StickC } void loop() { static uint8_t hue = 0; if (255 == hue) hue = 0; else FastLED.showColor(CHSV(hue++, 255, 50)); delay(50); }

No direct method exists to connect without a cable. I don't think it has ever been considered.

@mtal said in 18650C HAT battery level: Hi, is there any way to show/get the M5StickC 18650C HAT battery level from Arduino/UIFlow? No, the 18650C battery is directly connected to the M5StickC battery, there is no IC that enables to read the battery level.

@endurojunky I am glad you got it to work. :) I couldn't get my RFID unit working in the beginning too, so I used an Android app for testing. That app tells you what keys it used to access the individual sectors. I then google for rfid default keys and found the link I mentioned. The UIFlow block doesn't allow to change the keys, so I looked at the source code of UIFlow. That source unfortunately wasn't update for two years, but the RFID unit is in there. There I found the default key being used: https://github.com/m5stack/UIFlow-Code/blob/master/units/_rfid.py#L284. This also helped me to find out how to set the keys.

@ramaker please clarify which module you are using for the dc motors, is it the go plus or lego as there are a few that control dc motors, once I know the one I should have a better idea of which cables you need

Thank you for the answer. I will try the PaHub. K.D.

This problem is solved now. The following instruction needs to be updated: https://docs.m5stack.com/#/en/quick_start/unitv/v_function The instruction does not specify what driver is needed to communicate with hardware. It came out that the user needs a different driver than the one used for M5Stack core products. In case anyone has the same problem, please make sure you have the newest VCP driver by FDTI installed on your machine. My advice is to use their website to check out the latest version: https://www.ftdichip.com/Drivers/VCP.htm

@skink said in M5Paper: hier kannst Du sie bestellen !! "https://eckstein-shop.de/M5Stack" eckstein-shop.de: Delivery time : approx. 61 - 63 days Still 8 in stock for immediate dispatch at Distrelec.

@sodoku I have to admit that I'm an absolutely newbie so I was not aware of this standard behavior for all 360s but really helpful to know :-)

Hi, I just ran some test and the LED doesn't work if the lithium battery in the base is below 3.8 volts. the microprocessor wont start up and so the M5StickC can't communicate.