Modules

• O

  TimerCam battery connector?
  • OE1CKW

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• S

  UIFlow for StepMotor Driver M039 (HR8825)
  • starcrouz

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• N

  Compatibility of IoT Base with CAT-M Module (SIM7080G) with M5Stack Core2 ESP32 IoT Development Kit for AWS IoT EduKit
  • NilZ

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  Hello @NilZ Note: I do not own an IoT BASE CatM so my conclusions might be incorrect. Firstly M5Core2 for AWS (orange) is the same as M5Core2 (white) - well, except for the color. The secure element (ATECC608) is in the M5GO Bottom2 for AWS (dark gray). From the specs: The M5GO Bottom2 for AWS adds additional features and security for IoT applications. ... the onboard Microchip ATECC608 Trust&GO crypto-authentication chip is pre-provisioned with secure keys to simplify connectivity to AWS and accelerate cryptographic computation. ... In other words to physically stack the IoT Base CatM to the M5Core2 for AWS you have to un-stack the M5GO Bottom2 for AWS first and by doing so you don't have the secure element anymore which I believe is required to connect to AWS. So if you plan to use the SIM7080G to connect to AWS (instead of WiFi) I think the story ends here as you can only have either the SIM7080G or the secure element stacked to the M5Core2 at one time. If your question however is whether a plain M5Core2 (orange or white) can be used with the IoT Base CatM, then the answer is yes. The only thing you need to observe is that between M5Stack (Fire, Base, Gray) and M5Core2 some GPIOs have been changed - so the Arduino example (which is written for M5Stack) needs to be adapted for M5Core2. This list can help you with that. Thanks Felix
• C

  ESP32-D0WDQ6-V3 = NRND (not recommended for new designs) according to Espressif
  • Camier

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  Hi @ajb2k3 - Thanks for the reply. I gather it will take awhile before the M5 gets its hardware updated - the current NRND status is rather "fresh", from 10/2021.
• S

  Servo2 - Servo position
  • squamble

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• O

  TimerCam using PWR Button
  • orrba

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• E

  Com.X.LoraWan 868 module configured at 470Mhz ?
  • ecasti

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  Hello @ecasti glad to hear you got it working and thank you for reporting back. Happy New Year! Felix
• O

  connect with usb to COM-NB-IOT-MODULESIM7020G fails
  usb driver sim7020g teminal • • olavk

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  Hello @olavk no, I don't think P/G is the on/off trigger. It seems to be connected to GND. I think PWK is the power key. Have a look at the COMX schematic. You'll find this: P/G : is connected to GND GND : is connected to GND PWK : is connected to EN RXD : is connected to GPIO17, GPIO0 or GPIO17 TXD : is connected to GPIO16, GPIO5 or GPIO15 VIN : is connected to either 5.4 V or whatever is provided at the DC in VIN : dito VTTL : not connected VEXT : not connected How exactly this translates to an Arduino MKR Zero I cannot tell. I don't have one to try. Sorry. Thanks Felix
• R

  BLE receiver poor sensitivity, external antenna possible?
  • robjordan

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• D

  M5Stamp C3 - I2C interface
  • didier9

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  Hello @davidgs Hmm, I can scan the I2C bus just fine using port A (GPIO0 and GPIO1): Wire.begin(GPIO_NUM_1, GPIO_NUM_0); I2C requires pull-up resistors on both lines. GPIO8 already has a 10k pull-up resistor. Did you add a pull-up resistor to GPIO7 as well? Some I2C slave devices might already have pull-up resistors in place tough. Edit: I've just tried with GPIO7 and GPIO8. The I2C scan works with those two GPIOs for me as well. Thanks Felix
• D

  M5Stack GPS module (M003) finds no satellites
  • dennis78ac

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  I have tried quite a lot of things, but the M003 modules did not find any satellites. At least the PPS pulses should be present even without any core connected if the modules are powered with 3.3V. Probably I received two defect devices. Meanwhile I bought two GPS units of type AT6558. They are less expensive and they do now their job without any problem. They have even the advantage of an integrated voltage regulator, so they are not dependant of a power supply with an exactly regulated voltage value. It is just a little bit tricky if one wants to use the pps output of the GPS chip as it is already connected with a blue LED inside the device (not visible if case is closed). So some soldering work has to be done.
• M

  Stepper Module GRBL doc ?
  • MM2012

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  Hi! Did you find any information about the M012 stepper module? I just bought one as well and am having a lot of difficulty finding information about commands, and basically how to run it from a Raspberry Pi 4. Any info you have found would be useful! I cant find any Python code anyone may have written for it.
• P

  USB Host module - which pins?
  • PaulHamshere

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  P

  Hi - I did try the example and it works. But it works whether any pin is connected to INT - pin 17, pin 35 or no pin at all. INT drives interrupt responses and perhaps this really doesn't use any interrupts - but then why connect P35 at all? The rar looks to have the same pin assignment as above in avrpins.h - pin 17 to INT. I am wondering if I've missed something here!
• R

  M5Stack_BUS IC, bus1 what is it ?
  • Radu

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  Hello @Radu this is not an actual IC but the describes the M5Stack bus connector which is used for the interconnection between M5Stack cores and modules. Thanks Felix
• M

  Multiple COM.x modules together
  • mludlum

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  R

  The UART in question, is that the M5STACK bus IC ? What part number is it ?
• A

  M5Stamp C3 programming examples
  • AucT

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  Hello @ajb2k3 What worked for me on macOS Big Sur 11.5.2 is using the ESP32C3 built-in USB via GPIO18 and GPIO19. What also worked for me on macOS Big Sur 11.5.2 was downloading and installing this driver CH9102_VCP_SER_MacOS from here. After a reboot and plugging in M5StampC3 via USB this port show up /dev/cu.wchusbserial... (in addition to /dev/cu.usbmodem... which did not work). Thanks Felix
• E

  Does BTC Base Support M5Stack Core2?
  • EKTan

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  Hello @EKTan Note: I don't own a BTC Base so my conclusions could be incorrect. that said, the BTC Base is mainly for M5Stack (Base and Gray) which include the Battery Bottom. So mechanically you'll need at least a Battery Bottom stacked to the M5Core2 to make it work with the BTC Base. Note: in order to be able to stack the Battery Bottom to the M5Core2 you'll have to remove the small board (which contains the IMU and the microphone) as well as the bottom already installed on the M5Core2. By doing so you'll lose the IMU and the microphone. Note: the Battery Bottom only is available in gray or black. Thanks Felix
• F

  Lora Module ASR6501 with Arduino
  • Filq

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  K

  I'm just getting started with a ASR6501 UART version of Lorawan with a WioD51R. Kinda in the same boat looking for some simple code examples. Not sure if you saw this, might be helpful at least for a list of AT commands. https://www.hoperf.com/data/upload/back/20190605/ASR6501_ASR6502_QA.pdf
• F

  M5 GPS Unit - Does it support sleep and wakeup mode?
  • falbriard

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• R

  LORA-MODULE-868MHZ and LoRaWAN
  • remaille

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  Hello @remaille it should work with LoRaWAN, but as you already mentioned DIO1 needs to be connected to a GPIO on the M-Bus. I found this article (sorry, it's in German). Thanks Felix