M5StickC: Difference between revisions

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== Overview ==
[https://github.com/m5stack/M5StickC M5StickC] orange and wearable. I have 3 of these because they are cheap, come with lots of sensors, a tiny 80x160 LCD, and are nicely enclosed in a little case.


[https://github.com/m5stack/M5StickC M5StickC] orange and wearable.
It uses an [https://www.espressif.com/sites/default/files/documentation/esp32-pico_series_datasheet_en.pdf ESP32-PICO] processor with 520KB of RAM and 4MB of FLASH. It's supposed to be a wearable so it has a battery. This MCU uses more power than an ESP32S3 if that matters to you. I've read that the AXP192 PMS reads the internal battery and refuses to boot if it's dead. That means when the battery dies I will need to replace it if I want to continue using them.
I have a few of these because they are cheap, come with lots of sensors, a tiny 80x160 LCD, and are nicely enclosed in a little case.  


It uses an [https://www.espressif.com/sites/default/files/documentation/esp32-pico_series_datasheet_en.pdf ESP32-PICO] processor with 520KB of RAM and 4MB of FLASH. It's supposed to be a wearable so it has a battery.
I set up one with a PIR hat and used it to control a light for about a year. It works really perfectly for this with an MQTT connection to Home Assistant.
This MCU uses more power than an ESP32S3 if that matters to you.
 
Initially I set up one with a PIR hat and used it to control a light for about a year. Currently it's offline due to household politics.
It works really perfectly for this with an MQTT connection to Home Assistant.


* What can I do with the internal temp sensor? There are sensors in both the PMIC and the MEMS sensors
* What can I do with the internal temp sensor? There are sensors in both the PMIC and the MEMS sensors
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== Development environment ==
== Development environment ==
So far I have tried ESPHome, CircuitPython and UIFlow on it so far. I have no interest in UIFlow, but I think since it runs on MicroPython you can ignore "flows" and load code.  
So far I have tried ESPHome, CircuitPython on it so far. Since this board has only 520KB of RAM I will just break down and use C. ESPHome worked fine for my PIR sensor / MQTT IoT project, that's an option still for C programming.  


Since this board has only 520KB of RAM I will probably not go much further with MicroPython and just break down and use C. ESPHome worked fine for my PIR sensor / MQTT IoT project, that's an option still for C programming.
== Peripherals ==
Grove port GND 5V G32 G33 from the datasheet : '''GPIO32''', ADC1_CH4, TOUCH9, RTC_GPIO9 '''GPIO33''',


== Peripherals ==
ADC1_CH5, TOUCH8, RTC_GPIO8
Grove port GND 5V G32 G33 -- these ports can be used as analog inputs


LCD display
LCD display


6-axis IMU
6-axis IMU: SH200Q


PMIC
PMIC: AXP192 power management IC, controls the battery and display backlight.


MIC
MIC
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Button3 = G39
Button3 = G39
Temperature


Pin header (used for add-ons such as the PIR Hat) -- GND 5VOUT G26 G36 G0 BAT 3V3 5VIN
Pin header (used for add-ons such as the PIR Hat) -- GND 5VOUT G26 G36 G0 BAT 3V3 5VIN


Temperature
'''GPIO26''', DAC_2, ADC2_CH9, RTC_GPIO7, EMAC_RXD1
 
SENSOR_VP 5 I '''GPIO36''', ADC1_CH0, RTC_GPIO0
 
'''GPIO0''', ADC2_CH1, TOUCH1, RTC_GPIO11, CLK_OUT1, EMAC_TX_CL


== Projects ==
== Projects ==
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Motion sensor -- ESPhome + PIR Hat + a spare phone charger = a cheap motion sensor that reports over WiFi + MQTT.
Motion sensor -- ESPhome + PIR Hat + a spare phone charger = a cheap motion sensor that reports over WiFi + MQTT.


LED strip controller -- working on this soon, to control RGBW strips over WiFi, or maybe I will press on with the [[Nordic nRF52840]]'s and Zigbee.
Open Authenticator -- https://hackaday.io/project/176959-open-authenticator
 
Rheem / Econet Heat Pump Water Heater controller for Home Assistant -- ESPhome + RS485 hat = non-cloud control of water heater.


== Resources ==
== Resources ==
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[https://docs.m5stack.com/en/quick_start/m5stickc_plus/mpy Micropython]
[https://docs.m5stack.com/en/quick_start/m5stickc_plus/mpy Micropython]
[https://m5stack.oss-cn-shenzhen.aliyuncs.com/resource/docs/UIFlow-StickC-Book-English.pdf UIFlow guidebook]

Latest revision as of 23:54, 19 December 2024

Overview

M5StickC orange and wearable. I have 3 of these because they are cheap, come with lots of sensors, a tiny 80x160 LCD, and are nicely enclosed in a little case.

It uses an ESP32-PICO processor with 520KB of RAM and 4MB of FLASH. It's supposed to be a wearable so it has a battery. This MCU uses more power than an ESP32S3 if that matters to you. I've read that the AXP192 PMS reads the internal battery and refuses to boot if it's dead. That means when the battery dies I will need to replace it if I want to continue using them.

I set up one with a PIR hat and used it to control a light for about a year. It works really perfectly for this with an MQTT connection to Home Assistant.

Internal photos (This "plus" version has bigger screen) https://www.gwendesign.ch/kb/m5stack/m5stickcplus/ and https://www.gwendesign.ch/kb/m5stack/m5stickc/

It has some magnets in it so you can stick it to things! Cool.

Batteries - it has an RTC button cell and a tiny (95mAH) LiPo. More of a UPS than a power supply.

Looks like taking it apart is a waste of time, things are pretty packed in there. Don't bother. Have lots of other ESP32 things already.

Development environment

So far I have tried ESPHome, CircuitPython on it so far. Since this board has only 520KB of RAM I will just break down and use C. ESPHome worked fine for my PIR sensor / MQTT IoT project, that's an option still for C programming.

Peripherals

Grove port GND 5V G32 G33 from the datasheet : GPIO32, ADC1_CH4, TOUCH9, RTC_GPIO9 GPIO33,

ADC1_CH5, TOUCH8, RTC_GPIO8

LCD display

6-axis IMU: SH200Q

PMIC: AXP192 power management IC, controls the battery and display backlight.

MIC

RTC

IR LED G9

Red LED G10

Button1 = Power on / off / reset

Button2 = G37

Button3 = G39

Temperature

Pin header (used for add-ons such as the PIR Hat) -- GND 5VOUT G26 G36 G0 BAT 3V3 5VIN

GPIO26, DAC_2, ADC2_CH9, RTC_GPIO7, EMAC_RXD1

SENSOR_VP 5 I GPIO36, ADC1_CH0, RTC_GPIO0

GPIO0, ADC2_CH1, TOUCH1, RTC_GPIO11, CLK_OUT1, EMAC_TX_CL

Projects

Motion sensor -- ESPhome + PIR Hat + a spare phone charger = a cheap motion sensor that reports over WiFi + MQTT.

Open Authenticator -- https://hackaday.io/project/176959-open-authenticator

Rheem / Econet Heat Pump Water Heater controller for Home Assistant -- ESPhome + RS485 hat = non-cloud control of water heater.

Resources

https://docs.m5stack.com/en/core/m5stickc

https://m5stack.oss-cn-shenzhen.aliyuncs.com/resource/docs/datasheet/core/esp32-pico-d4_datasheet_en.pdf

Micropython

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