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Arduino library for LCD Display HT1621
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- Written by Super User
- Category: Arduino
- Hits: 340
Once, I ordered on aliexpress.com an SPI LCD Display for my arduino project:
Keyboard for Arduino Projects
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- Written by Super User
- Category: Arduino
- Hits: 136
In one of my arduino projects I needed a keyboard with more than 4x4 keys and I wanted to use less pins.
I deside to use I2C bus for connection my future keyboard to arduino, because I2C needs only 2 pins.
For keypad I deside to use port extender chip MCP23017.