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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


USB AVR programmer

USB AVR Programmer

Breadboard adapter for the USBasp AVR Programmer

USBasp Breadboard Breakout Adapter

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


Breadboarding: Connecting a Pressure Sensor to the ADC of an AVR Microcontroller

To have the microcontroller read a pressure sensor, the sensor is connected to the ADC (Analog to Digital Converter). In this case, the sensor is connected to the pin 0 of the ADC (PORT A).

AVCC (ADC Power VCC) is connected to the + rail and the AGND (ADC Ground) is connected to the - rail on the breadboard. Noise entering AVCC and AGND is filtered by a 100nf (nano farad) capacitor. The leads of the capacitor connect to the AVCC and AGND.

The pressure sensor is made into a breakout so it can be plugged into the bread board. The number 4 pin of the pressure sensor is connected to the pin 0 of the ADC. The number 2 pin of the pressure sensor is connected to the VCC 5v (since this is a 5v device) and the pin number 3 is connected to GND.

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