Chapter 1: What You'll Learn

Infographic listing four pillars of embedded systems learning: microcontroller architecture, circuit design and sensors, programming and debugging, and IoT and power management

Engineering workflow diagram showing four stages in sequence: design, code, test, deploy, each represented with an icon

Flowchart of project steps: project steps, define requirements, design circuit, write code, build prototype, test and refine

Circular diagram of the embedded development ecosystem with four quadrants: hardware, programming, testing/tools, and debugging

Four-step microcontroller quick-start guide: set up hardware, install software, write code, upload and test, each with an illustration

Decision tree for choosing the right microcontroller based on I/O pin count and power requirements, branching to example chip families

Block diagram of a microcontroller as a system with four connection categories: power supply, communication, inputs, and outputs

Stylized pinout diagram comparison across four microcontroller families: ATtiny85, ATmega328P, ESP32-WROOM-32, and RP2040

Firmware architecture diagram showing the main loop connecting to an interrupt service routine and to peripheral driver modules

Interrupt flowchart showing IRQ triggered, execute ISR, return to main, in sequence

State machine diagram showing three cyclic states: sensor reading, sleep, and transmit

Setting fuses diagram showing an AVR chip connected to a computer running avrdude commands to set low fuse and high fuse values

Sensor interfacing illustration showing a microcontroller connected via VCC, digital, analog in, and ground pins to a potentiometer, temperature sensor, and ultrasonic sensor

Analog sensor signal conditioning circuit schematic showing an LM35 or thermistor feeding an op-amp buffer and filter stage before an ADC input

Calibration routine flowchart: start, sample sensor, stable reading decision, adjust offset, end

PWM motor control circuit schematic with a microcontroller PWM output driving a transistor that switches a DC motor, with a flyback diode across the motor and VCC

Relay and optocoupler interface schematic showing a microcontroller I/O pin driving an optocoupler which switches a relay controlling an external load

Conceptual full PCB layout illustration showing a microcontroller at the center with power, I/O, and communications regions connected by routed traces

PCB and sensor integration diagram showing an ATtiny85 connected to an OLED display, nRF24L01 wireless module, LM35 temperature sensor, voltage regulator, and ISP programming header

Diagram showing a system controlled by multiple microcontrollers, each driving its own separate output

Power sources block diagram showing USB, battery, and solar inputs feeding voltage regulation to 5V and 3.3V rails powering a microcontroller, sensors, displays, and peripherals

Dual power source management diagram showing USB power and battery power combined through OR-ing diodes into a common supply node

Thermal management diagram showing heat flow from a voltage regulator into a PCB

Power state machine diagram showing active, cloud, deep sleep, and idle states in a cycle

Energy harvesting diagram showing a solar panel charging a battery that powers a microcontroller in a cyclic flow

Solar-powered embedded node block diagram with solar panel, MPPT charge controller, protection circuit, microcontroller, Li-ion battery, sensors, sleep controller, radio, and display

Cloud data flow diagram showing a microcontroller sending data through a phone or Wi-Fi connection to a dashboard and gateway

Wi-Fi plus BLE architecture diagram showing Wi-Fi and Bluetooth Low Energy both connected to an ESP32, linking network and device

LoRa and mesh network topology diagram showing a LoRa gateway connected to Wi-Fi and to multiple mesh-linked nodes

Diagram showing how data flows in an IoT system from sensors through an edge node to the cloud, then to a local display and a user

Smart IoT sensor network layout showing multiple microcontroller nodes with different sensors connected through a shared Wi-Fi and LoRa cloud

Firmware update flowchart showing a server downloading firmware, verifying it, installing it if verification fails, and rebooting the microcontroller

Full system architecture diagram showing a temperature sensor and display connected to an ATtiny microcontroller, linked wirelessly via nRF24L01 to a second board and cloud icon

Real-world embedded system diagram showing a microcontroller connected to cloud, sensor, and Wi-Fi module, with power management driving a display, motor, relay, solar panel, and battery

Troubleshooting flowchart asking whether the microcontroller is powered, whether connections are correct, and whether code runs properly, leading to issue resolved