pi-top PULSE: smart speaker + lights for Raspberry Pi

January 23, 2018 | 09:00
Elektor-TV-piTop-Pulse-arrowIn the pi-top ecosystem, experimenting, coding and building electronics around the Raspberry Pi are simple, affordable and fun.
pi-topPULSE is a cool sound & light accessory in the form of a HAT (hardware-on-top) compatible device. It includes a:
  • a 7x7 RGB LED grid,
  • a 2 W-speaker and
  • a microphone.
Ambient lights reflect the state of the LED array, four around the speaker, and three on the underside.
The microphone has 200 Hz to 11 kHz response and automatic gain control (AGC).
pi-topPULSE uses a variety of interfaces to communicate with the Raspberry Pi: the speaker uses I2S, and the LEDs and microphone use serial (UART), Tx and Rx respectively.


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