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Roland Pelayo

I started TMM back in 2015. I’m a firmware and embedded systems engineer with over ten years of experience designing and developing electronic and microcontroller-based products. Over the years, I’ve worked on a wide range of projects, including medical devices, access control and security systems, automation, robotics, wireless communication modules, IoT systems, imaging and sensor instruments, and educational training tools. I’ve built systems using platforms such as PIC, AVR, ESP32, STM32, nRF52, and Raspberry Pi, and I regularly work with protocols like RS485/OSDP, CAN, TCP/IP, Wiegand, and a variety of sensor and communication interfaces. I also develop full-stack solutions for embedded projects, combining firmware, hardware, and web-based dashboards when needed. If there’s a topic you’d like me to write about, or if you need consultation or hands-on development for electronics, embedded, or firmware projects, I’m always open to working on new ideas and collaborations. You can reach me anytime through the contact page.

STM32 PWM Calculator

STM32 Calculator

This calculator will help you compute the desired PWM frequency. Just put in the clock frequency and the desired PWM frequency and click the "calculate" button. The prescaler value and the ARR (auto-reload register value) will be the results.

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STM32 Timer Calculator

STM32 Calculator

This calculator will help you compute the required PSC and ARR values to achieve your desired timer interrupt period. Just put in the timer interrupt period, the clock frequency, and the ARR register width.

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The Growing Importance of HR Courses Online in a Dynamic Workplace

In today’s rapidly evolving work environment, human resource (HR) professionals face increasing demands to stay ahead of industry trends, ensure employee satisfaction, and navigate complex workplace regulations. One of the most effective ways to remain competitive in this field is by enrolling in HR courses online. These courses offer flexibility, …

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Top Reasons to Choose Managed IT Support in the Bay Area

The San Francisco Bay Area is a hub for innovation, attracting businesses that rely on cutting-edge technology to stay competitive. However, managing IT infrastructure in such a fast-paced environment can be challenging. Managed IT support offers a solution by providing expert guidance, advanced tools, and comprehensive services to help businesses …

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Using ADC Scan Mode with DMA in STM32F407

In this tutorial, we will explore how to configure and use the ADC (Analog-to-Digital Converter) in the STM32F407 microcontroller in scan mode with DMA (Direct Memory Access). This setup is particularly useful when working with multiple analog inputs that need to be converted into digital values efficiently. We will also …

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How to Use the PT100 RTD with Arduino Cloud

Using a PT100 RTD (Resistance Temperature Detector) with an Arduino and connecting it to the Arduino IoT Cloud via Wi-Fi allows you to remotely monitor temperatures with high accuracy and reliability. In this tutorial, we’ll walk you through the process of setting up your PT100 sensor with an Arduino that …

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