In this issue

6 Exploring the ESP32’s Peripheral Blocks
For IoT or Home Control
By Brian Millier

16 Posture Corrector Leverages Bluetooth
App-Controlled Wearable
By Rohit Jha, Erissa Irani and Amanda Pustis

22 Apartment Entry System Uses PIC32
Smart Buzzer Scheme
By Joseph Featherston

30 Designing a Home Cleaning Robot (Part 4)
Firmware Design
By Nishant Mittal and Vaisakh KV

SPecial FEATURE
36 IoT: From Device to Gateway
Modules for the Edge
By Jeff Child

Technology Spotlight
42 Software Tools Flex Their
Code Analysis Muscles
Complexity and Quality Collide
By Jeff Child

Product Focus
46 ADCs and DACs
Pushing the Boundaries
By Jeff Child

50 Embedded System Essentials
Pick and Place Made Easier
Open-Source Tool Project
By Colin O’Flynn

54 The Consummate Engineer
Measuring Acceleration
By George Novacek

58 Above the Ground Plane
Stepper Motor Waveforms
A Journey in Microsteps
By Ed Nisley

66 From the Bench
Texting and IoT Embedded Devices (Part 1)
Fun with the ESP8266 SoC
By Jeff Bachiochi

TECH THE FUTURE
79 The Future of IoT Sensors
Forecasts Predict Deluge of Powerful IoT Sensors
By Zach Wendt

Circuit Cellar Magazine Description:

Circuit Cellar magazine features engineering tutorials, detailed microcontroller-based projects, and embedded systems industry news for professional electrical engineers, EE/ECE academics, and highly skilled electronics enthusiasts. Since 1988, Circuit Cellar has featured projects and tutorials from the world's top engineers on subjects such as embedded development (e.g., prototyping and programming), signal processing (e.g., DSP chips and signal conditioning), programmable logic (e.g., FPGA projects), sensor systems (e.g., smart sensors and MEMS), 'Net-connected devices (e.g., IoT projects and protocol stacks), robotics (e.g., robotic systems and proximity sensing), and much more. Circuit Cellar is the ultimate resource for all of your electrical engineering-related needs.