20180806_M5Stack User Mtg #3

1. I made some more expansion
board for M5Stack
2018/08/06
@tomorrow56
Masawo Yamazaki
M5Stack User Meeting #3

2. Introducuction

3. Masawo Yamazaki (tomorrow56)
- Hardware engineer (Electronic circuit design)
- PC monitor and TV design in Japan
- Currently: Evaluation at semiconductor manufacturers

4. ↑
I am designing a development board with this name
↑
Uno shaped ESP32 breakout board
https://www.switch-
science.com/catalog/3456/
↑
IR & Servo shield for Arduino Pro Mini USB Host Shield for Arduino Pro Mini
Web： https://thousandiy.wordpress.com/
Facebook： https://www.facebook.com/thousandiy/

5. User Meeting #1: M5Cloud

6. User Meeting #2: USB Host Shield

7. User Meeting #3
I made a motor shield and a servo shield

8. Design target
• Use common devices in Arduino
• Making as cheap as possible
• Can stack with 3 types of my Shield
• USB Host Shield (SPI)
• Motor Driver Shield (6pin digital)
• Servo Shield (I2C)

9. Download schematics from M5Stack Official
http://www.m5stack.com/

10. Check connection of internal devices and list them

11. ESP32 IO No. Strapping(default) M5Stack_Internal M5Stack_IO USB_Host_Shield L293D PCA9685 direction Note
0 〇(PU) Mode IIS_MCLK 12EN I/O GPIO0, ADC2_CH1, TOUCH1, RTC_GPIO11, CLK_OUT1, EMAC_TX_CLK
1 TXD0 TXD1 I/O GPIO1, U0TXD, CLK_OUT3, EMAC_RXD2
2 〇(PD) G2 3A I/O GPIO2, ADC2_CH2, TOUCH2, RTC_GPIO12, HSPIWP, HS2_DATA0, SD_DATA0
3 RXD0 RXD1 I/O GPIO3, U0RXD, CLK_OUT2
4 SD_SPI_CS I/O GPIO4, ADC2_CH0, TOUCH0, RTC_GPIO10, HSPIHD, HS2_DATA1, SD_DATA1, EMAC_TX_ER
5 〇(PU) G5 SS I/O GPIO5, VSPICS0, HS1_DATA6, EMAC_RX_CLK
6 I/O GPIO6, SD_CLK, SPICLK, HS1_CLK, U1CTS
7 I/O GPIO7, SD_DATA0, SPIQ, HS1_DATA0, U2RTS
8 I/O GPIO8, SD_DATA1, SPID, HS1_DATA1, U2CTS
9 I/O GPIO9, SD_DATA2, SPIHD, HS1_DATA2, U1RXD
10 I/O GPIO10, SD_DATA3, SPIWP, HS1_DATA3, U1TXD
11 I/O GPIO11, SD_CMD, SPICS0, HS1_CMD, U1RTS
12 〇(PD) IIS_SCK 1A I/O GPIO12, ADC2_CH5, TOUCH5, RTC_GPIO15, MTDI, HSPIQ, HS2_DATA2, SD_DATA2, EMAC_TXD3
13 IIS_WS 2A I/O GPIO13, ADC2_CH4, TOUCH4, RTC_GPIO14, MTCK, HSPID, HS2_DATA3, SD_DATA3, EMAC_RX_ER
14 LCD_CS I/O GPIO14, ADC2_CH6, TOUCH6, RTC_GPIO16, MTMS, HSPICLK, HS2_CLK, SD_CLK, EMAC_TXD2
15 〇(PU) IIS_OUT 34EN I/O GPIO15, ADC2_CH3, TOUCH3, MTDO, HSPICS0, RTC_GPIO13, HS2_CMD, SD_CMD, EMAC_RXD3
16 RXD2 4A I/O GPIO16, HS1_DATA4, U2RXD, EMAC_CLK_OUT
17 TXD2 INT I/O GPIO17, HS1_DATA5, U2TXD, EMAC_CLK_OUT_180
18 LCD_SCK/SD_SPI_CLK SCK SCK I/O GPIO18, VSPICLK, HS1_DATA7
19 SD_SPI_SDDO MISO MISO I/O GPIO19, VSPIQ, U0CTS, EMAC_TXD0
20
21 MPU9250_SDA/GROVE_SDASDA SDA I/O GPIO21, VSPIHD, EMAC_TX_EN
22 MPU9250_SCL/GROVE_SCL SCL SCL I/O GPIO22, VSPIWP, U0RTS, EMAC_TXD1
23 LCD_MOSI/SD_SPI_SDDI MOSI MOSI I/O GPIO23, VSPID, HS1_STROBE
24
25 SPEAKER DAC0 I/O GPIO25, DAC_1, ADC2_CH8, RTC_GPIO6, _RXD0
26 DAC1 I/O GPIO26, DAC_2, ADC2_CH9, RTC_GPIO7, EMAC_RXD1
27 LCD_R/S I/O GPIO27, ADC2_CH7, TOUCH7, RTC_GPIO17, EMAC_RX_DV
28
29
30
31
32 LCD_BL I/O GPIO32, XTAL_32K_P (32.768 kHz crystal oscillator input), ADC1_CH4, TOUCH9, RTC_GPIO9
33 LCD_RST I/O GPIO33, XTAL_32K_N (32.768 kHz crystal oscillator output), ADC1_CH5, TOUCH8, RTC_GPIO8
34 IIS_IN I GPIO34, ADC1_CH6, RTC_GPIO4
35 AD I GPIO35, ADC1_CH7, RTC_GPIO5
36 AD I GPIO36, SENSOR_VP, ADC_H, ADC1_CH0, RTC_GPIO0
37 BUTTON_C I GPIO37, SENSOR_CAPP (270pF)
38 BUTTON_B I GPIO38, SENSOR_CAPN (270pF)
39 BUTTON_A I GPIO39, SENSOR_VN, ADC1_CH3, ADC_H, RTC_GPIO3
Look at the schematics of M5Stack
and assign pins to avoid conflicts
Pin Default 3.3V 1.8V
MTDI/GPIO12 Pull-down 0 1
Pin Default SPI Flash Boot Download Boot
GPIO0 Pull-up 1 0
GPIO2 Pull-down Don't-care 0
Pin Default U0TXD Toggling U0TXD Silent
MTDO/GPIO15 Pull-up 1 0
Falling-edge Input Falling-edge Input Rising-edge Input Rising-edge Input
Falling-edge Output Rising-edge Output Falling-edge Output Rising-edge Output
MTDO/GPIO15 Pull-up 0 0 1 1
GPIO5 Pull-up 0 1 0 1
Strapping Pins
Timing of SDIO Slave
Pin Default
Firmware can configure register bits to change the setting of "Voltage of Internal LDO (VDD_SDIO)"
and "Timing of SDIO Slave" after booting.
Note:
Voltage of Internal LDO (VDD_SDIO)
Booting Mode
Debugging Log on U0TXD During Booting
We need to use strapping
pin for Enable…

12. 2ch Motor Driver Shield for M5Stack
•H-Bridge Driver: L293D (TI compatible)
Motor Power Select
Internal or External
LiPo Battery
Connector
Battery SW
External Battery
connector
Motor connector

13. 2ch Motor Driver Shield for M5Stack
Use Strapping pin
for Enable

14. Demo: Spider Robot with BLE Control
https://twitter.com/i/status/1023463396920840192

15. 10ch Servo Shield for M5Stack
•PWM Driver: PCA9685 (NXP compatible)
Motor Power Select
Internal or External
LiPo Battery
Connector
Battery SW
External Battery
connector
10 Servo connectors

16. 10ch Servo Shield for M5Stack

17. Demo: Plot Clock corrected with NTP
https://twitter.com/tomorrow56/status/1025086708210008064
PCA9685 Servo Library: https://github.com/adafruit/Adafruit-PWM-Servo-Driver-Library

18. Additional Information
I will sell the USB Host Shield at Switch Science market place
from the end of August and support site is open.
https://thousandiy.wordpress.com/2018/06/16/usb-host-for-m5stack/

19. USH Host Shield for M5Stack
•USB Host Chip: MAX3421E (MAXIM Integrated)
LiPo Battery Connector
Battery SW
USB STD-A connector
The revised board was finished and it was
confirmed that one operation was completed.

20. Demo
M5Stack_USBHost_PS3BT
https://github.com/tomorrow56/M5Stack_USBHost_PS3BT
M5Stack_USBHost_Wii
https://github.com/tomorrow56/M5Stack_USBHost_Wii
USB Host Shield Library : https://github.com/felis/USB_Host_Shield_2.0

21. Have a good M5Stack life!

22. Jimmy, thank you for making M5Stack!