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Red LED Button Module BMK22M131

US$2.20
In stock
Quantity
250 pieces
Product ID
BMK22M131

The BMK22M131 is an LED button module with a built-in red LED that is designed using the Holtek 8-bit MCU, HT66F2040. The product can be cascaded up to 16 modules at the same time and configured functions or read status of buttons via the I2C interface.

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DESCRIPTION

The BMK22M131 provides two operation mode: button control mode and instruction control mode.
Button control mode: the LED lights up when the button is pressed and turns off when the button is released.
Instruction control mode: the LED brightness is configurable from 0 to 255, and the LED can be displayed as a breathing light.

Additionally, the product can recognize short press and long press by configuring the long press duration. You can also define functions for both short and long presses. For instance, set the button to enter sleep mode upon detecting a long press, and adjust the power of the water atomization module upon sensing a short press.
And then, configure the long press duration to 2000ms. When the button is held for 1500ms, it will be recognized as a short press, triggering an adjustment in the water atomization module's power.

There is the BMCOM on the module. With the BMCOM, you can directly connect the product to BMduino development boards, such as BM53A367A directly. You can use it with other development boards, such as Arduino UNO, as well.

The on-board SCOM_I and SCOM_O interfaces are used to cascade numerous modules (up to 16 modules).
It is easy to use. Just connect the SCOM_O interface of the first module to the SCOM_I interface of the second module by using a pin header or cable, and configure the operation mode and brightness for the cascaded modules either collectively or individually.

It is important to connect modules before powering up. Otherwise, the cascaded IDs of modules may not be in order. Additionally, please avoid disconnecting the modules while using them.
PRODUCT FEATURES
  1. Operating voltage: 3.0V~5.5V
  2. Operating current:
    - Non-pressed: 2.5mA @5V
    - Pressed: 6.8mA @5V
  3. Recognizable long press and short press
  4. Operation mode: button control mode, instruction control mode
  5. Provide cascaded interface, and can cascade up to 16 modules
  6. Configurable LED brightness (0 to 255)
  7. Operation mode and brightness can be configured collectively or individually
  8. I2C interface (address: 0x77)
  9. Dimension: 29.58 x 25.7 x 11.86 mm
  10. Net weight: 4.9g
  11. Product includes: BMK22M131 x1 / 2x2P header x1
HARDWARE OVERVIEW
PIN DESCRIPTION
Pin Pin name Function
1 INT interrupt pin
2 SCL I2C: clock line
3 SDA I2C: data line
4 VDD Power supply: 3.0V~5.5V
5 GND Ground
6 GND Ground
7 VDD Positive power
8 ST_O Cascade status output pin
9 TRX Cascade single bus communication pin
10 VDD Positive power
11 GND Ground
12 ST_I Cascade status input pin
13 TRX Cascade single bus communication pin
RESOURCES
  1. MCU : Holtek HT66F2040, Small Package A/D Flash MCU with EEPROM, including datasheet, package information, etc.
More Information
HS Code (reference) 8517.79.00.00-6
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