@gabi I saw a suggestion that you need to use 115,200 for flashing the ESP32 and also have that speed set in the web IDE to connect to it...

Instead of the Web IDE, some alternative means of connecting to the ESP32 are outlined here plus other details: https://www.espruino.com/ESP32#espruino-web-ide

Using Javascript with the ESP32 is also discussed in "Kolban's Book on ESP32".

@loboris Is an experiment. Hoping to get better results...
I will publish the code soon.

@calin @jp

BTW:

@Reaper7 made a very nice bluetooth app for an Owon multimeter....

Code here: https://github.com/reaper7/M5Stack_BLE_client_Owon_B35T
Discussed here: http://forum.m5stack.com/topic/132/m5stack-ble-client-for-owon-b35t-multimeter

@vsthose

Hi VSTHose,

See link below - Version 0.11

https://github.com/m5stack/M5GO/tree/master/firmware/v0.11

Read the flash.sh file for the TWO memory locations to flash it to..... flash it using the ESP32 Flash Download Tool under Windows or the ESP-Tool for other OS.

Cool!!

@calin 在 M5Stack MultiApp Firmware 中说：

M5Stack MultiApp Advanced released: http://forum.m5stack.com/topic/194/m5stack-multiapp-advanced-firmware
Back to PlatformIO IDE :)

With Web Radio and wifi auto-connection WPS!

At the moment, clearing the old position then printing is the fastest way to do it http://forum.m5stack.com/topic/173/how-to-avoid-text-flicker/3 you can print to sprite if you use the eSPI library and that'll gain you a few ns on the chip but I think the bottleneck is the SPI protocol, that's what Bodner was saying.
You can wrap the clear and print in a function which will make your code as concise as using an object.

@m5dude Thanks!
Sorry about comments absence in code - they was on local language, and dropped automatically when downloading. Code optimisations was only on chess engine, other parts made more rudely.

Awesome oscilloscope case - designed by Macsbug - infos here

Top prize should be ALL stacks + $1000.
Runner ups should get the yellow version + $100

Hello,
what version/type of wire.h do you use?

I got this error at "Wire.requestFrom(0x08,1,true);":

In file included from /Users/.../Documents/Arduino/libraries/M5Stack/src/M5Stack.h:92:0, from sketch/M5StackSAM.h:1, from sketch/M5StackSAM.cpp:1: /Users/.../Documents/Arduino/hardware/espressif/esp32/libraries/Wire/src/Wire.h: In member function 'void M5SAM::keyboardEnable()': /Users/.../Documents/Arduino/hardware/espressif/esp32/libraries/Wire/src/Wire.h:66:13: note: candidate 1: uint8_t TwoWire::requestFrom(int, int, int) uint8_t requestFrom(int, int, int); ^ /Users/.../Documents/Arduino/hardware/espressif/esp32/libraries/Wire/src/Wire.h:61:12: note: candidate 2: size_t TwoWire::requestFrom(uint8_t, size_t, bool) size_t requestFrom(uint8_t address, size_t size, bool sendStop); ^

Can anyone help me?

@world101 Really glad you raised this question and found a solution... I have wanted to use it for quite a while but hadn't chased it.... thanks. Will test it out.

@jp128 @Dave @ddaniel

Hi Jp128,
Thanks for the tip..... could be very useful.... more reading required....

@reaper7 Excellent - thanks. No problems for the link - its just new.... looking forward to trying it ASAP. Enjoy !

Yes the device will be used to record multiple temperatures using DS18B20 sensors on one wire with a single 4.7k resistor. I hooked up 5 and can read them indiviudally since they have there own addresses. I only need the temperature to the nearest degree so they are fine for my purposes.

I actually use a 3.5mm jack and bought a few connectors as like you found that many do not fit, however the very small SMD mounted ones just fit in the standard case. The ones I found are on Amazon:

https://www.amazon.co.uk/dp/B008SO0E60/ref=pe_3187911_189395841_TE_3p_dp_1

@anichang
Hi Anichang,

Glad to hear our issue is cleared.... its understandable for anyone if one has had issues with something in the past to be sensitive - even more so when digital rights are involved as this can quickly become a serious matter.

I think I have some similar views to yours in that area.

OK well all the best with your work..... I stay tuned ! Jimi

A new version of the M5StackSAM library
https://github.com/tomsuch/M5StackSAM

Added features to easily create and navigate the list.
(APPLICATIONS -> LIST DEMO)

Added support for the FACES QWERTY keyboard.
(APPLICATIONS -> FACES GET STRING)

cool , thanks for sharing!

Another one wich looks even more promising :
https://github.com/earlephilhower/ESP8266Audio