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The product is a MIDI module designed specifically for electronic drums, fully compliant with the General MIDI specification. It features 128 melodic sounds and 61 percussion notes, providing a rich palette for musical expression. Additionally, it includes a customizable metronome and a record/playback function, helping users to explore various musical styles and create their own unique tones.
Sounds: compliant with General MIDI specification - 128 Melodic sounds
- 61 Percussion notes
- 32 Percussion samplings (customizable up to 512)
⬥ High fidelity, high sound quality
Tracks - 23 rhythm cycle tracks
- 8 demo tracks
16 analog signal input channels
Audio output - DAC x2 @16-bit
- I2S @24-bit
Supports record/playback function (external NOR Flash is needed)
Includes customizable metronome function
Trigger calibration
Interface: UART (baud rate: 31250bps)
DESCRIPTION
To make your performance sound more realistic and immersive, the product offers 15 analog input interfaces, allowing users to connect piezoelectric patch sensors to detect force when playing electronic drums. The sound volume is determined based on the impact force, simulating a real drumming experience.
Additionally, the product provides trigger calibration, which records the maximum voltage value during normal playing for each channel as a reference for calibration based on actual usage. Through calibration, the accuracy and sensitivity of electronic drum performance can be enhanced, while also adapting to different users' playing habits, delivering a highly realistic playing experience.
PIN DESCRIPTION
Pin
Name
Function
1
USB_DM
USB D-
2
USB_DP
USB D+
3
SPI_CS
SPI chip select signal
4
SPI_SCK
SPI clock signal
5
SPI_MISO
SPI master data input/slave data output
6
SPI_MOSI
SPI master data output/slave data input
7
I2S_WS
I2S word selection
8
I2S_BCLK
I2S bit clock
9
I2S_SDO
I2S data output
10
I2S_SDI
I2S data input
11
I2S_MCLK
I2S system clock
12
PD0
I/O port
13
PB9
I/O port
14
UR_TX
UART: TX
15
UR_RX
UART: RX
16
I2C_SCL
I2C clock line
17
I2C_SDA
I2C data line
18
DVOUT_3V3
Outputs 3.3V (digital)
19
VIN
Power supply: 5V
20
GND
Ground (digital)
21
AGND
Ground (analog)
22
AVOUT_3V3
Outputs 3.3V (analog)
23
DAC_R
DAC right sound channel output
24
DAC_L
DAC left sound channel output
25~40
AN0~AN15
Analog input
RESOURCES
MCU: Holtek HT32F61356, 32-Bit Arm® Cortex®-M0+ Music Synthesizer MCU, including datasheet, package information, etc.
