Simple keyboard with numbers.
The matrix consists of 10 buttons of a tact switch type, arranged in two rows and five columns. The board also contains a joystick. The module communicates via 5-bit interface displayed on the 7 popular goldpin connectors - pitch of 2.54 mm.
Touch keyboard, equipped with 8 buttons and the linear sensor with the goldpin connector - pitch of the 2.54 mm. It communicates via an I2C bus or digital outputs for each button separately, its external dimensions: 68 x 47 mm.