Can the Cat Ears be connected and driven by the M5stickC? I was curious due to the amount of LEDs (118) on the cat ears. Seems like the LEDs would require quite a bit of power and I wasn’t sure if the stickC could handle it.
Posts made by world101
RE: M5Stack Gray reboots when USBC power removed
Just found this on Twitter: https://mobile.twitter.com/lovyan03/status/1162512607279890434
Using google translate:
Insert a 2200μF capacitor between 3v3 of M5Stack and GND for USB insertion / extraction test. It succeeded in the normal bottom, and it worked as it was without resetting even if USB was removed.
RE: External libraries and I2C via UIFLOW
I wanted to know the same thing. I just received this one from Seed Studio that I’m trying to get working with uiFlow.
RE: 328p firmware workflow
Looks like you need to solder a header onto the board to program them.
RE: [Solved]Schematics for M5StickC?
M5StickC schematic is not permitted to be open source yet, maybe later. We have offered the block diagram on the back sticker of the device, include all components and pin layout. Do you think those info is enough ?
Not quite enough info. The question I have (and others too from another thread), is there any clamping or level shifting circuit (5V down to 3.3V) between the Grove port and I/O pins (G0, G26, G36) to the ESP32? If not, an external device (sensor) could pass 5V back into the M5stickC via Grove or I/O pins and damage the ESP32.
RE: New Products 05-July 2019 And new video series.
No WiFi on the M5StickV.... why???
RE: 5V input concern on M5StickC
Just providing a bit of information on this topic. I have a project that uses the XKC Y25 T12V liquid level sensor (5-24V). I feed the sensor with 5V and GND from the M5stickC pin extension headers on top. I'm reading the sensor's digital status (LOW/HIGH) on pin G36. When I disconnect the wire from pin G36, the sensor reads ~4.9V during a HIGH state (as expected). When I connect the wire to pin G36, the sensor reads ~3.7V during a HIGH state. So I can only assume the I/O-lines are clamped to 3.3V somewhere inside. It would be good to see the schematic to confirm this though.
RE: M5 stick C wont turn on am i missing something?
if some firmware in stickc, please connect g0 to 3.3V, next insert usbC，it will work well
Though this does work, I'm curious to know if you are working on a real fix via a firmware update.
RE: Adding external libraries via uiflow
By the way, you should be able to follow a similar procedure to load any custom library. Just create the directory /flash/custom and then reference it with sys.path.append('/flash/custom') in boot.py.
ampy -p /dev/tty.SLAB_USBtoUART -b 115200 mkdir /flash/custom ampy -p /dev/tty.SLAB_USBtoUART -b 115200 put customLib.py /flash/custom/customLib.py
import sys sys.path.append('flowlib/lib') sys.path.append('/flash/custom')
Then with uiFlow, you can use the execute block to have the choice when it gets imported (so you don't import it automatically when your program doesn't need it).