@jimit 在 GPS + GSM 中说：
@richardmike4 Hi Richard,
Some modules use the same GPIO - in this case only one module can be actively used at a time.
It would be a good idea to add some jumpers on such modules to select the communication pins.
There is plenty of space on the board for that purpose.
For example, GPS & GSM modules, apart from the fact that they cannot be used at the same time, are completely unusable on M5Stack with psRAM on which pins 16&17 are used to access psRAM.
@lim
All ESP32 applications running on any ESP32 board, including M5Stack are built using esp-idf.
esp-idf is not FreeRTOS. FreeRTOS is included into esp-idf (as a component) and is slightly modified version of the official FreeRTOS (see esp-idf documentation).
The mentioned drivers are not the part of the esp-idf, but are built on-top of esp-idf and uses the esp-idf API.
cp210x driver on Ubuntu works without any problem.
There is no difference between M5Stack and other ESP32 boards using the same USB to UART chip (related to the communication with the PC).
I can communicate with the M5Stack same as with other ESP32 boards I have (flash, terminal, etc.).
Built applications runs the same on M5Stack as on other ESP32 boards I have.
There is nothing specific to M5Stack which should cause behaviour different than other ESP32 boards.
@m5stack 在 IP5306 automatic standby 中说：
hi there, i had ordered 4k pcs ip5306_i2C, and change the newest board for this, so the new model can close this function.
Great news, but make shure that the new board is degned in a way that the total power consumption of all the additional circuitry (except ESP32 itself) can be reduced to at least <100 uA, otherwise it wont be very useful.
When building with esp-idf you can use M5Satck just like any other ESP32 development board.
All esp-idf examples, for example, will run on M5Stack same as on any other board.
You may have some issues when using C++. Please cunsult the documentation and ESP32 forum. There are many threads related to C++ issues/questions.
Could you share the Samtec header part number and the seller's link ?
@watson 在 Ideas, helping M5Stack document stuff... 中说：
@kabron
Hey kabron. Fire is not a topsecret. I consider that there are few different between M5Core Basic, M5Core GRAY, M5Fire and the main board(M5Core WHITE) of M5GO. They are simliar to each other. So we just supply the schematic of M5Core Basic.
Please read this doc. I updated it just now.
https://github.com/m5stack/M5-Schematic/blob/master/Core/hardware_diff_between_m5cores.md
If it is not a secret, you should make the schematics of all the boards available. How hard can it be to put them on GitHub or somewhere else. Especially if you want those boards to be used by developers who want to do with them more than just playing with nice boxes.
I've just received the M5Paper and I can say it is an excelent device with quite a low price for what it includes.
There is only one thing that I'm not quite happy about. The white of the display is much more gray than on any other ePaper display I have (most of them from Waveshare).
Is it because of the touch screen panel or the display itself is like that? Can it be improved?
For the 16 gray levels ePaper it is quite important to have a good contrast ratio.
Congratulations on an excelent product, I think it will be a great success.
It would be nice if I had it too. Unfortunately I can't find a supplier in Germany who delivers it.
Distrelec has 17 left in stock. I've received mine in less than 18 hours (Netherlands -> Croatia)
@moelski 在 External Power - What is possible? 中说：
It looks very ugly to use a USB Connector
If you use external power, some kind of connector must be used.
You could use USB cable with right angle connector, like this one, I don't think it looks ugly.
You can remove the USB-A connector on the other side, and attach whatever power source you have.
