PRODUCTS

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  Core-Ink --> Any other fonts available besides the two included
  • HappyUser

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  Timer Camera X voltage range
  • Spline

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  You guys put the wrong threads in M5-StickT, you put M6, not 1/4"-20
  • frank26080115

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  And while you guys fix the nylon 3D printed case design, please also add holes for the infrared emitter. I see the IR emitter LED on the PCB but there's no holes on the case to let the light out. And if you are wondering, yes, I do need it. It would be helpful if you guys posted a file type better than STL so I can actually edit the 3D model myself. Like STEP or IGES.
• E

  m5Paper Screen issue
  m5paper screen • • ebr61168

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  Hello @ebr61168 I am out of ideas at this point in time, sorry. Have you checked with M5Stack support or the shop / store you got your M5Paper from? Thanks Felix
• K

  Powering on the c3u
  • KjaerN

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  Hi @felmue Ok, but thank you for loking into it anyway. Best regards Kenneth
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  M5Paper v1.1: Detect charging state and progress
  • MauriceX111

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  Hi @MauriceX111 I've also just got an M5 Paper v1.1 (my first experience of M5 or ESP32) and it is a very nice product but I'm also struggling to find out things... Very grateful that this community - and especially @felmue - are here, otherwise I'd be completely stuck! Felix pointed me at the code that the device ships with. Searching this, I found here the following code // Battery _bar->setTextDatum(CR_DATUM); _bar->pushImage(498, 8, 32, 32, ImageResource_status_bar_battery_32x32); uint32_t vol = M5.getBatteryVoltage(); if (vol < 3300) { vol = 3300; } else if (vol > 4350) { vol = 4350; } float battery = (float)(vol - 3300) / (float)(4350 - 3300); if (battery <= 0.01) { battery = 0.01; } if (battery > 1) { battery = 1; } uint8_t px = battery * 25; sprintf(buf, "%d%%", (int)(battery * 100)); // _bar->drawString(buf, 498 - 10, 27); _bar->fillRect(498 + 3, 8 + 10, px, 13, 15); So that doesn't help with finding out whether the battery is charging; but it does seem to be the best available way to represent the charge level. HTH.
• S

  Stamp C3 /C3U pinout diagrams
  • SlydeRule

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  @felmue OK! I tied the very complicated TOF sensor because it is in-line code, no damned Library and... ...It works on C3. The expected activity on the G1, G0 was as it should be. So, thanks for your help, I will use this event as a plateau and work to trouble shoot the ENV myself, probably with in-line code, No Lib !!! Vielen Dank!
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  M5Stack Module and Sensor power specs
  • timbobot

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• N

  M5Stamp C3U unable to load program
  • NuttyMonk

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  Thanks @felmue. When I looked at your code I realised my mistake. I'd been treating the RGB LED as a simple LED, not an RGB. I should have read the spec sheet! It's all working as expected. I have also managed to get the M5Stamp attached to Blynk. Tony
• F

  M5StickC-Plus MPU6886 cannot report upside-down pitch, only between 0 to 90
  • frank26080115

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• T

  LoraWAN868 demo error
  • tonyd

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  Hi @felmue I got a bit further. Instead of just using the demo app, I built the app up step by step from the separate unit components and put debug prints on each step. I have now got the code printing a message at the top of the loop containing the two if/do statements. So for me it seems that taking the demo code was the problem. I don't know why though as I essentially built the same code block by block. The next problem is that Things Network is not letting me in. I think I will have to switch to the arduino IDE as there is a bit more control over debugging there Tony
• C

  M5 Stack Core2 Firmware Stops Working on Reboot
  • codewitch

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  Hello @codewitch good news - your M5Core2 most likely is not defective. For me the issue is happening independently of whether M5Core2 is running from USB or battery. It always happens after a complete power loss. The reason it is not working as expected is that for some functions dealing with voltages you declared the parameter as float but then call them with big non float values. Here is what I changed in m5core2_power.cpp to make it work: //--fm Wire1.begin(22,23); Wire1.begin(21,22); //--fm mcu_voltage(3350); mcu_voltage(3.350); //--fm lcd_voltage(2800); lcd_voltage(2.800); //--fm ldo_voltage(2, 3300); //Periph power voltage preset (LCD_logic, SD card) ldo_voltage(2, 3.300); //Periph power voltage preset (LCD_logic, SD card) //--fm ldo_voltage(3, 2000); //Vibrator power voltage preset ldo_voltage(3, 2.000); //Vibrator power voltage preset Thanks Felix
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  Atom U STTServer down
  • ajb2k3

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  How ROS is used in mechArm 270?
  • ElephantRobotics

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  @kkkkkk It is esp32
• 

  Implement the color recognition on myCobot
  • ElephantRobotics

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  K

  Good article, I will buy this kit
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  Touch get wrong X and Y values more you go away from display center
  • GMG

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  Hello @GMG care to share some code which exhibits the issue you are describing? Thanks Felix
• J

  M5 paper become brick?
  • jackchan000

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  Hello @jackchan000 ok, for some reason GPIO0 is held low causing the ESP32 starting up into download mode. GPIO0 is controlled by the USB serial chip inside M5Paper which in turn is controlled from the USB driver. (There is nothing much you can do to change that except maybe try a different computer.) Try to power off and power on your M5Paper with the following steps: disconnect USB press button in the back (this should power it off) Note: there is no visible change on the screen when doing that. press middle button on the side (this should power on M5Paper and run the factory test) Note: the button in the back has two functions depending on whether M5Paper is connected to USB or not. reset (USB connected) power off (USB not connected) Thanks Felix
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  UHF-RFID-UNIT-JRD-4035 effective distance
  • PAOPAO

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  @paopao Hi! If using UIFlow, then this is it, if it‘s Arduino. Serial port sending commands or use API， then CH_index = 1 https://github.com/m5stack/M5Stack/blob/master/examples/Unit/UHF_RFID_JRD4035/RFID_command.cpp
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  GPS - incorrect readings
  • dsrc12

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  @dsrc12 Hi! This must be outdoors in wide-open areas, cold start time takes about 3 / 4 minutes
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  M5Stack core2 communicate with ROS
  • LishengKKK

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  @lishengkkk Hi there, please check if the baud rate of both sides match (you can also try to change the baud rate, such as the common 115200). If it's a UART via separate wiring. Please make sure TX RX is connected correctly.