EasyLoader (beta)

Current Product Don't Have Test Firmware

Note: pls, use PC chrome/edge browser, if can't connect, refresh the webpage.

1. Click connect button

2. After connected successfully, pick a firmware

3. Click the burn button

4. After burning successfully, Unplug the device and restart.


8Servos HAT v1.1



8Servos HAT v1.1 is an 8-channel servo driver module that works with the M5StickC/C Plus series. Adopt STM32F030F4 as main controller to drive servos with PWM (Pulse Width Modulation) signal. I2C communication. Embedded power management circuit to control servo ON/OFF with programming. With the rechargeable 16340 lithium battery (with the capacity of 700mAh), it can support Maximum 1.3A load. Applied for robotic and DIY projects.

Product Comparison

Specification 8Servos HAT 8Servos HAT v1.1
Motor power control / MOS tube control power on/off
Reverse Battery Protection / With circuit protection
Fixing hole / 4x fixing holes
Programmable RGB LEDs SK6812 /
I2C ADDR 0x38 0x36

Product Features

  • 8-channel servo driver
  • Programmable servo power control
  • 16340 lithium battery
  • I2C protocol control (0x36)
  • Reverse Battery Protection


  • 1x 8Servos HAT v1.1
  • 1x 16340 battery (700mAh)


  • Servo controller
  • Robot control


Specification Parameters
Lithium Battery Specification: 16340, Capacity: 700mAh
Servo drive channel 8-channel
Maximum drive load capacity 8-channel maximum load capacity: DC4.2V@1.3A
Driver no-load standby current DC4.2V@2.2uA
Fixing hole M3
Communication Protocol I2C:0x36
Net weight 28.3g
Gross weight 39.7g
Product Size 52*38*19mm
Package Size 75*46*29mm

Pin Mapping

M5StickC GPIO0 GPIO26 3.3V GND
8Servos HAT v1.1 SDA SCL Vin GND





Communication Protocol

  • Protocol type I2C
  • I2C Address: 0x36
hex len R/W description send params
0x00 1 R/W CH1 angle output [0] CH1 angle
Valid value range: 0-180
0x01 1 R/W CH2 angle output [0] CH2 angle
Valid value range: 0-180
0x02 1 R/W CH3 angle output [0] CH3 angle
Valid value range: 0-180
0x03 1 R/W CH4 angle output [0] CH4 angle
Valid value range: 0-180
0x04 1 R/W CH5 angle output [0] CH5 angle
Valid value range: 0-180
0x05 1 R/W CH6 angle output [0] CH6 angle
Valid value range: 0-180
0x06 1 R/W CH7 angle output [0] CH7 angle
Valid value range: 0-180
0x07 1 R/W CH8 angle output [0] CH8 angle
Valid value range: 0-180
0x10 2 R/W CH1 output pulse width [0] CH1 pulse width HB
[1] CH1 pulse width LB
Valid value range: 500-2500
0x12 2 R/W CH2 output pulse width [0] CH2 pulse width HB
[1] CH1 pulse width LB
Valid value range: 500-2500
0x14 2 R/W CH3 output pulse width [0] CH3 pulse width HB
[1] CH1 pulse width LB
Valid value range: 500-2500
0x16 2 R/W CH4 output pulse width [0] CH4 pulse width HB
[1] CH1 pulse width LB
Valid value range: 500-2500
0x18 2 R/W CH5 output pulse width [0] CH5 pulse width HB
[1] CH1 pulse width LB
Valid value range: 500-2500
0x1A 2 R/W CH6 output pulse width [0] CH6 pulse width HB
[1] CH1 pulse width LB
Valid value range: 500-2500
0x1C 2 R/W CH7 output pulse width [0] CH7 pulse width HB
[1] CH1 pulse width LB
Valid value range: 500-2500
0x1E 2 R/W CH8 output pulse width [0] CH8 pulse width HB
[1] CH1 pulse width LB
Valid value range: 500-2500
0x30 1 R/W MOS servo power control [0] MOS_CTL
Valid value range: 0(power off)/1(power on)


Q1: How do I remove the speaker floor noise when the M5Core is on or running?

Execute the following statement in Setup() of the Arduino program

Q2: How does M5Core2 stack modules?

When M5Core2 is stacked with other M5 modules, you need to remove the battery base of Core2, which does not support module stacking.

Q3: A timeout error is displayed when uploading the program to the device

Reason and solution: The power supply current of the port is insufficient, which can cause the device to not enter the download mode normally. You can try to connect a capacitor (>0.1uF) between the RST pin and the GND pin, or when uploading the program, set the G0 Short-circuit to GND, so that G0 can be set to a low level state normally

Q4: How to solve the phenomenon of automatic signal triggering of M5Core button A

Add the header file #include <driver/adc.h> and the function adc_power_acquire(); in the Arduino program

Q5: M5 device battery life

The battery life of the controller is affected by various factors such as battery capacity, operating status, and load, so there is no fixed value. Reducing the load and adopting a sleep strategy can effectively increase the battery life.

Q6: Can multiple modules with batteries be stacked at the same time?

Support multiple stacks, the total capacity of the batteries in parallel increases, and the voltage remains unchanged. However, since the discharge of each battery is not balanced during use, there is a voltage difference between the batteries, which may cause the battery to charge backwards. .(will lose part of the battery capacity)

Q7: M5 master supports WiFi connection to 5G frequency band

ESP32 module currently does not support WiFi in 5G band, only 2.4G.

Q8: The RS485 device cannot communicate normally/data is garbled. Packet loss, etc.

Confirm whether the TX/RX pin on the TTL side of the pin is correct, try to add two 120Ω terminal resistors at the beginning and end of the device line to reduce signal reflection interference

Q9: The difference between different masters and camera products

Click the link below to view the product comparison table

Q10: M5 camera image blur, how to adjust the focal length

Rotate the lens to adjust the focal length within a certain range

Q1: How to read the programmed firmware?

Use esptool to read the flash content of esp32 and export the bin file. Refer to the detailed operation

Q2: Several solutions for esp32 board download failure in Arduino IDE board management

Restart the Arduino IDE, the computer uses the mobile AP mobile network to download.

Method 3: Download the resource package provided by M5Stack for direct installation, and extract the contents to the board management path of Arduino, such as (C:\Users\Sean\AppData\Local\Arduino15\packages), https://m5stack.oss-cn-shenzhen.aliyuncs.com/resource/arduino/packages/m5stack_v2.0.0.zip
Q3: Arduino SPIFFS file upload operation

Refer to the Github link below, use arduino-esp32fs-plugin for file upload

Q4: When M5Burner burns firmware, an error pop-up window or exception occurs

Check if the COM of the corresponding device is selected and if the M5Burner is the latest version

Q5: Does the M5 master device support multi-language display (Chinese, English, Japanese, Russian, etc.)?

UIFlow users can switch the Label font to Unicode, Arduino users can use the Chinese font library provided in the M5GFX driver library

Q6: The program cannot load the SD card normally

Confirm whether the SD card format is FAT32, and no partitions exist.

Q7: How to use Bluetooth, HTTP, SD, WebServer, FreeRTOS and other features in Arduino IDE

You can refer to the following link for other ESP32 users to share the case program

Q8: How to download programs for STAMP C3U

STAMP C3U enters program download mode operation: 1. Long press the center button (G9) of STAMP C3U when the power is off. 2. Connect to the computer, after the port is successfully identified, program burning.

Q9: How STAMP C3U defines UART0 output mode

By default, USB CDC is not enabled, the serial port output started by C3U will be output through the default pins (G20, G21) of UART0. If you want to output through USB, please use the IDE to output Its USB CDC option is enabled. (Arduino users can enable it through Tools->USB CDC on Boot-Enabled. For IDF users, please refer to the ESP IDF official documentation.)

Q10: Unable to connect to UIFlow Desktop IDE

Refer to the UIFlow documentation of the corresponding device to check whether the device has entered the USB programming mode.


Q1: Consultation for after-sales problems of products

Describe the problems encountered in detail. Screenshots of the programs involved or files can be added as attachments and sent to M5Stack's official after-sales email

Q2: Code Resources, Cases, User Communication