Home / Roland Pelayo (page 48)

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.

Arduino Like IDE for PICs

arduino like ide for pic - chipkit uc32

Before the Arduino became popular, PICs were the go-to microcontroller device for most electronic hobbyists. PICs were cheap and the resources (at that time) were plenty. But then Arduinos came, which offer a much simpler way to code and so only a few now use these microcontrollers. Arduino's strength relies …

Read More »

Beaglebone Black I2C Tutorial

beaglebone black i2c

I2C is a popular communications protocol and is used by a lot of sensors and devices. This is why most microcontrollers, including Arduino, PICs, and STM32 have I2C support. In this tutorial, we will look at how to use the I2C protocol on the BBB and create a simple Beaglebone …

Read More »

Log Data with NodeMCU and Google Sheets

nodemcu ajax dynamic sensor data

Most of the time, the data from a sensor in an IoT application needs to be recorded. This data logging is important for later statistical analysis now most popularly known as data analytics. In this tutorial, we will record the data captured from the sensor to a spreadsheet. Let's build …

Read More »

Creating a Simple NodeMCU Web Server

nodemcu-webserver

We're done with basics of the NodeMCU in my last post. Now it's time to use the NodeMCU like how it's meant to be: an IoT device. Here I will show you how to create a simple NodeMCU web server which will control a LED attached to one of the NodeMCU's …

Read More »

Intro to NodeMCU and Arduino IDE

node mcu v1.0

The NodeMCU is a development board featuring the popular ESP8266 WiFi chip. As it turns out, you can program the ESP8266 just like any other microcontroller. Its obvious advantage over the Arduino or PIC is that it can readily connect to the Internet via WiFi. However, the ESP8266 breakout board …

Read More »

How to Manipulate Arduino Pins Simultaneously

Arduino Pins Map

If you've coded PICs before Arduinos one of the things you might have noticed is the lack of function on the latter to manipulate multiple pins at once. Manipulating all the Arduino pins at once is needed, for example, when using a seven-segment display or creating strobe lights. Is there …

Read More »

Arduino Library: How to Create Your Own

arduino library

One of the strengths of the Arduino platform is its extensive library. Libraries make life simpler for coders; imagine how hard it would be if there's no LiquidCrystal or Servo library ready for use. In my experience, projects took shorter time because of the built-in and third-party Arduino library you …

Read More »