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echo: it's a Xiaomi Mijia Gateway with an ATOM Echo brain transplant

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randy committed 2026-09-29 23:23:44 +02:00
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mcu-echo.yaml
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---
# Hardware: M5Stack ATOM Echo
# Hardware: Xiaomi Mijia Gateway, brain transplant: M5Stack ATOM Echo (kept the speaker, LEDs and PSU)
# Pinout:
# GPIO12 -> Button (binary_sensor gpio) (inverted)
# GPIO19 -> speaker_bus (i2s_audio i2s_bclk_pin)
# GPIO21 -> led_red (output ledc)
# GPIO21 Gateway LED red -> led_red (output ledc)
# GPIO22 -> speaker_id (speaker i2s_audio i2s_dout_pin)
# GPIO23 -> led_status (light status_led); led_blue (output ledc)
# GPIO25 -> led_green (output ledc)
# GPIO23 Gateway LED blue -> led_status (light status_led); led_blue (output ledc)
# GPIO25 Gateway LED green -> led_green (output ledc)
# GPIO26 Grove SDA -> i2c (i2c sda)
# GPIO32 Grove SCL -> i2c (i2c scl)
# GPIO33 -> speaker_bus (i2s_audio i2s_lrclk_pin)