Shift registers are useful chips that can add more outputs or inputs to your micro-controller. The 74HC595, for example, provides 8 additional digital outputs that can be controlled with only 3 Arduino pins. Additionally, you can “daisy-chain” multiple shift registers to …

Shift registers: add more digital I/O to your Arduino Read more »

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Updated: Arduino Uno controlling an LCD using a shift register

Now that I got my recycled 40×2 character LCD working with Arduino, the next step is to get it to show something useful.  I decided to add it to my Bluetooth Controlled robot  and display data from its two ultrasonic …

Arduino controlled LCD using a shift register and the SPI library Read more »

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