Units

• L

  UnitV2 control grove pins as GPIO
  • llucixxeu

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• L

  UnitV2 OCR - License Plate Recognition
  unitv2 ocr alpr lpr text • • llucixxeu

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  H

  Interesting project! I have a UnitV2 (and the older UnitV) as well but only little experience with. My approach would be the following: To recognise only a few well known vehicles you can classify the image of the whole plate including car front (and drivers face) instead of the individual numbers/letters on it. This can be done with the V-training or with the online classifier function. For recognising single numbers/letters you can try to classify individual numbers/letters and then "read" the x-coordinates of the returned boundary boxes in ascending order to convert into string and then compare to a list/database.
• V

  8-Angle Unit does not respond to read_status call through I2C
  • vjou0

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  Additional information: I am using ATOM Lite to communicate with 8-angle and I flashed ATOM Lite with ATOM Lite firmware v1.11.0, by using M5Burner-v3-beta-win-x64. When I connect to ATOM through Terminal in UIFlow, it says “MicroPython 3a9581b5a-dirty on 2022-12-08; M5Stack with ESP32.” MicroPython on the ATOM Lite is perfectly working with other units, such as CardKBCardKB V1.1 (I2C) and ATOM GPS kit (UART). If anyone can give me valid MicroPython scripts to test the 8-angle unit response that I can try with my ATOM Lite, I would appreciate very much.
• P

  JOY C pinout
  • pakpoon

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• B

  PaHUB + ENVIII pressure reading issue
  • Boomvalt

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  A

  @boomvalt I have the same issue. The ENV III Unit works well when connected directly to Port A, it displays the temperature, humidity, and pressure correctly, but when I connect the sensor to PaHub, the temperature and humidity have still correct values, but the pressure is static and shows a negative number something like -513233.2. I have two units and with both, I have the same results. Were you able to solve this issue? Regards. Alvaro B
• M

  IMU Unit - What acceleration units are being reported?
  • Mkoeppel74

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• M

  RTC UI Flow - GET RTC doesn't work
  • mickud

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  M

  Hi, I am using Atom Lite. It's the one from ATOM Stepper Motor Driver Development Kit (DRV8825) I am using UIFLOW(LITE) v1.9.8 downloaded using the Burning Tool I checked if the Burnning Tool would update the UIFLOW version, but I did not download the newest Burning Tool version. That must have been a mistake. Now I downloaded the newest Burning Tool with UIFLOW 1.11.0 on board and it is working correctly. Thank you Felix. Much appreciated!
• H

  Is the RCA unit bi-directional?
  • HWTaro9

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  @hwtaro9 Well, it is intended to transmit video generated from the M5Stack to a monitor. The RCA unit "could" receive if there was a video decoder in the M5Stack, which there is not. The unit itself is a passive connector only.
• F

  RF433 TX and UIFlow
  • fbritop

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• D

  Testing ESP32 Ethernet Unit with PoE (SKU:U138 )
  • dsrc12

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  Hello @dsrc12 you are correct, the GPIOs for Serial2 in the M5Stack (M5Core) examples are incorrect. It should be 16/17 as you already figured out yourself. I've created a pull-request which corrects the three M5Stack (M5Core) examples. To get past wait ethernet connect multiple conditions need to be met: a) the network needs to have a DHCP server b) the IP address range needs to be 192.168.x.x c) the DHCP server needs to be compatible with ESPoE Unit re b) in case your network doesn't use 192.168.x.x you can modify it in this function bool Unit_PoESP32::checkETHConnect() { sendCMD("AT+CIPETH?"); _readstr = waitMsg(1000); if (_readstr.indexOf("192") != -1) { return true; } else { return false; } } Thanks Felix
• N

  V-Training Problems
  • nagual1414

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  As far as I am aware, they were having problems rebuilding the server. It could also be an issue with the Great Firewall of China.
• 

  How do I update NB-IoT Unit Global (SIM7020G) firmware?
  • sgryphon

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  Hello @sgryphon from what I can tell there are two (three?) options to update SIM7020 firmware: using UART2 (pins 22, 23) with a full firmware file using OTA with a delta firmware file the procedure is described here and here. There is something written about FOTA in the AT document as well. It sounds like one could download the delta firmware directly from the SIMCOM? server? Sorry, I don't know the exact process to update firmware but I am curious myself so please keep us (me) updated about what you find. Thanks Felix
• C

  UnitV2 goes unresponsive durring setup
  • class14

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• C

  UnitV2 uart function switched to motion_tracker.
  • class14

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• T

  How to use RF Unit RF433T and RF433R
  • tspycher

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  M

  @tspycher said in How to use RF Unit RF433T and RF433R: I have the following two units: https://shop.m5stack.com/collections/m5-sensor/products/rf-unit-433mhz-receiver-syn513r https://shop.m5stack.com/collections/m5-sensor/products/rf-unit-433mhz-transmitter-syn115 In UIFlow under units they are not listed. Does anyone have example code how to use them in python? Thanks any update on this?
• E

  Heart Unit with Core 2 - any suggestions?
  • earla

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  E

  This sensor is surprisingly difficult to use but I still learned a lot. As suggested, I took a look at the raw data from the sensor using an M5Stack Arduino program. Although you can see the pulse data, it is very unstable, noisy and has a varying offset. Here is a very good description of what it takes to make the MAX30100 work. https://morf.lv/implementing-pulse-oximeter-using-max30100 In addition to what the article says, the two Heart sensors I have behave differently and would require individual calibrations.
• W

  Sample code for Thermal Unit and Core2?
  • wsanders

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  Thanks for the hint. That code won't compile: 'MLX90640_BadPixelsCorrection' was not declared in this scope. If you comment out the reference to MLX90640_BadPixelsCorrection it compiles and works OK. In the meantime I got a UIFlow version working more or less. Download from https://github.com/wsanders/WSThermalCore2Cam/blob/main/thermtest1.m5f. It's pretty crude but it autoranges OK if the temperature differences aren't too bad. Using ASCII art pixels because it's faster than drawing two rectangle (you STILL can't draw a borderless rectangle in UIFlow!) Sorry - I deleted my previous post accidentally. It was full of errors anyway.
• I

  Ultrasonic I2C problems
  • ispybadguys

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  I

  It seems if I set the i2c rate to 100Khz this works.
• B

  PBHub v1.1 (STM32F030F4p6) FW Source
  stm32 pbhub fw • • basgoossen

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• S

  UnitCam quality and compression settings missing for Arduino and Core2
  • swiminthesky

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  Thanks lot @felmue, I really appreciate. I had guessed the output format can also simply be changed by writing to the ov2640 register. At least it says it on the main page, that the other settings would be available. Anyways, I am fine with working with jpg, but unfortunately I cannot reproduce the jpeg yet in an RGBA8 texture with the given resolution from the provided buffer (~8000 bytes). The photo taken is just white/grey. I am just sending the uint8_t buffer over Serial for (uint32_t i = 0; i<frame.size; i++) { Serial.write( frame.buf[i] ); }, and read the bytes to a texture, while filtering for Jpeg Start ff d8 and Stops ff d9 (which I find). The length / size of the buffer ~1000-3000 for the 160x140 resolution, seems suspiciously low though, compared to the relatively good image shown on the Core2 display. Hm.. I assume the buffer has to be uncompressed based on compression settings found in the Jpeg header bytes.. -- Got it working by decompressing jpeg