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3 pin slide switch

SPDT Slide Switch 3 pin 30V

STM32F0 microcontroller and interface board top view

STM32 M0 MCU and Interface to Breadboard

Image of the Atmega324p


Serial to USB converter with Micro USB cable

USB to Serial Converter

Thumbnail: Crystal Oscillator 18.432 MHz for UART

18.432 MHz Crystal Oscillator 18pf 30ppm

Thumbnail: 22 pF Capacitor

22 pF Multilayer Ceramic Capacitor

Thumbnail: Quartz crystal oscillator - 16 MHz

16 MHz Crystal Oscillator 20 pF Through Hole

Thumbnail: 4x4 keypad top view.

4x4 Keypad with Adhesive Backing

Thumbnail: quad buffer line driver 74HC126E

Quad Buffer Line Driver (Through Hole)

USB AVR programmer

USB AVR Programmer


Breadboarding: Connecting an LCD Display to the Microcontroller Using a DIY Interface for the LCD

An interface (breakout) was created to make the connection from the LCD to the microcontroller easier. The DIY interface contains a trimmer potentiometer to adjust the contrast of the LCD. The interface has ribbon cable soldered and connected to the data lines of the LCD. The power, RS, R/W and Enable share another cable assembly that go to another part of the microcontroller.

This reduces the amount of space that the LCD uses on the breadboard.

In this case, the LCD data lines are connected to the PORT B of the AVR microcontroller. The E (enable), RW (Read Write) and RS (Register Select) are all plugged into PORT D. The power is plugged into the power rail.

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