ESP8266: IoT Electronics, Programing & Eagle PCB Design

Explore the Mirella ESP8266 based platform for DIY and smart home projects, featuring wifi connectivity, onboard and external sensors, a relay, and Arduino compatibility.

Explore the Mirella Water block diagram, detailing color-coded green connectors, ac input, switch-mode power supply, five-volt coil relay, fcd programming port, and Esp8266 interfaces.

Discover a step-by-step parts overview for the ESP8266 project, including a detailed bill of materials, package and voltage considerations, and options to order components or use assembly services.

Download and install the free version of Autodesk Eagle, follow the step-by-step installer, select your operating system, accept the license, and create a desktop shortcut for Eagle PCB design.

Explore the schematic design and editing in Autodesk Eagle, including libraries, managed libraries, and design blocks. Create and manage projects, symbols, footprints, and 3D models to build your first schematic.

Create a practical Eagle schematic from frame to wiring, placing resistors, an led, a bc817 transistor, schottky diodes, and a terminal block, while managing libraries, grids, arcs, and nets.

Explore Eagle PCB editor basics: generate a board from schematic, set grid and dimensions, place and align components, route traces, and create ground polygons and manufacturing documentation.

Push the bcb to Fusion 360 web to view the pcb in 3d. Apply the workflow to manage changes, replace connectors, adjust routing, and generate cam data for manufacturing.

Create Eagle components by designing a symbol and footprint with the Eagle library editor, add a 3D package, and link the symbol to the footprint via the device editor.

Explore the course’s technical resources, including data sheets, enclosure documentation, ESB module guidance, and a ready-to-use Eagle library with 3D models, plus tips to consult manufacturer docs before building.

Explore the theory of power supplies, compare linear and switching regulators, and learn to choose regulators based on output voltage, current, input voltage range, and dropout and temperature considerations.

Assemble a functional power supply block delivering 5 V and 3.3 V from an ac-dc converter and an LM1117 regulator, with proper input/output capacitors for ESB and RFM69HW modules.

Connect a two-pin 5.8 mm terminal block to interface with ac line and neutral. Use a 35-volt input capacitor and two 220 μF output caps for two rf modules.

Design the esp8266 circuit using the node mcu reference, power at 3.3v, define gpio per block diagram, and implement pull-up and pull-down configurations with a safe ftdi interface.

Explore the ESP8266 design process in the context of IoT electronics and Eagle PCB design.

Describe the esp8266 solution, detailing the esp module, 3.3-volt IO, a 100 nF bypass capacitor, pull-up and pull-down resistors, and eagle net naming like GPA zero and GPO 15.

Design a relay drive for ESP8266 using a GPIO with inverse logic to keep the relay off at boot, employing two transistor stages, a flyback diode, and an LED indicator.

Master the relay design process for ESP8266 IoT projects and learn how to integrate relays into Eagle PCB designs for reliable operation.

Explore analog and digital sensors, their interfaces, and how they convert physical quantities like temperature, humidity, and light into signals. See examples such as HD 22 and DHT 22.

Design digital and analog sensor interfaces using a three-pin 3.5 mm terminal block, bypass compositor and pull-up on data line, power the circuit, and ensure 0–1 V analog ESP8266 input.

Learn the sensor design process for ESP8266-based IoT electronics, including programming and Eagle PCB design.

Connect digital sensors to ISP IO with 3.3 volts, ground, and bypass capacitor; optionally include a pull-up resistor and a voltage divider for analog sensors to keep under 1 volt.

Learn radio theory and the electromagnetic spectrum, focusing on unlicensed ISM bands and the RFM69 AGW transceiver for short-range, encrypted sensor networks controlled via SPI.

Explore the radio design process for ESP8266-based IoT projects, weaving electronics, programming, and Eagle PCB design into a cohesive development workflow.

This solution lecture demonstrates assembling a radio with an RFM69 transceiver, powering at 3.3 volts with bypass capacitors, and configuring SPI GPIO on the ESP8266.