Advanced RISC Technology

Teensy 3.2 Small Audio Board, Using MPS121 Keypad



Small Beep Board


Bill of Material for Small Beep board
Comment PCB Footprint Quantity Components DESC & LINKPrice
100nf RADCAP-0.2 1 C1 Capacitor 00.044
10K AXIAL-0.4 3 R2, R4, R6 RESISTOR 00.04
10uF RADCAP-5MM 2 C2, C3 Capacitor 00.19
2.2K AXIAL-0.4 3 R1, R3, R5 RESISTOR 00.04
23LC1024 DIP8 1 U1 1Mbit SPI Serial SRAM 02.60
4.7K AXIAL-0.4 2 R7, R8 RESISTOR 00.04
5PIN-SIL_1 SIP-5 1 I2C 5 Pin Single In line .1 Inch centers
6PIN-SIL SIP-6 2 P1, P2 6 Pin Single In line .1 Inch centers Surface mount
HEADER-8 SIP-8 1 JP1 8 Pin Header
JP2_1 IDC-2 2 MIC, VIN 2 pin Jumper
JP3 SIP-3 1 VOL 3 PIN JUMPER
Keypad12A MPR121 1 KP1 12 position Touch sensitive keypad. $2.76 + $1.85 e-packet shipping
MicroSD_BrkMicroSD_Brk 1 SD1 MicroSD Breakout Board 01.15
PAM8302M PAM8302M 1 AMP1 Class D Mono Amplifier 2.5 W max03.95
Teensy3.2 teensy32 1 M1 MK20DX256VLH7 Cortex-M4 Dev Board 19.95
teensy_project_board1 PCB 1 PCBway W14701ASW3 05.00

Firmware example

Download Firmware for board

Small Beep Board Application box

Version with Telephone Keyboard

Big Beep Board