: An ICSP (In-Circuit Serial Programming) header consisting of MISO, MOSI, SCK, RESET, VCC, and GND for flashing firmware using an external programmer.
: A 10kΩ pull-up resistor connected from the RESET pin to VCC to prevent accidental resets, often paired with a tactile push button to GND for manual resetting. Atmega Development Board Schematic
: A voltage regulator circuit, such as the LM7805 or AMS1117, to step down input voltage to a steady 5V or 3.3V, supported by decoupling capacitors (typically 0.1µF and 10µF). : An ICSP (In-Circuit Serial Programming) header consisting
: Breakout pins that provide access to all digital and analog pins for interfacing with external components like LEDs or sensors. ATmega16/32 Development Board - Electronics-Lab Electronics-Lab Atmega8 Development Board - Electronics-Lab Electronics-Lab ATMEGA328P Circuit Diagram | Download Scientific Diagram ResearchGate 13 ATmega328p Circuit | Download Scientific Diagram ResearchGate : Breakout pins that provide access to all
: A 16 MHz crystal oscillator connected to the XTAL1 and XTAL2 pins, usually accompanied by two 22pF ceramic capacitors to GND.
: The central chip, often the ATmega328P DIP-28 , with pins for VCC, GND, and GPIO.
An ATmega development board schematic typically includes the microcontroller (MCU), a power regulation stage, a clock source, and headers for programming and general-purpose I/O (GPIO). The most common design is based on the (the heart of the Arduino Uno). Core Schematic Components