Description
The module with the MPR121 system that implements 12 of the capacitive touch buttons. To the holes with the pitch of 2.54 mm, you can connect, using the wires, any conductive elements and create from them the keyboard. The device works with: metal tools, fruits, vegetables and water.
The pins are holes for soldering the popular goldpin connectors - 2.54 mm pitch - strap is included in the kit for self-soldering.MPR121 chip operates with a voltage of 3 V, however, the board has a converter that allows you to connect 5 V to the pins of the I2C bus.
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The product is compatible with Arduino Manufacturer has prepared auser manualalong witha library on the GitHub for Arduino users. |
Connection
| Pin | Description |
|---|---|
| VIN | Supply voltage from 3 V to 5 V |
| GND | The ground of the system. |
| SCL | Clock line of the I2C bus. |
| SDA | The data line of the I2C bus. |
| ADDR |
Change of the address of the I2C bus:
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Specification:
- Supply voltage: 3 V to 5 V
- Communications: I2C bus
- Address of the bus:0x5Aby default with the possibility of changes to 0x5B, 0x5C or 0x5D using the ADRR pin
- Built-in voltage converter - lines operate with a voltage of 5 V
- The holes are suitable for installation of the goldpin strap, pitch of 2.54 mm (in the kit for self soldering)
- 2 x Stemma QT
- Dimensions: 33 x 19 x 4 mm
Useful links |
