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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.

Programming the STM32F1 Discovery

programming the stm32f1 discovery

So I got this STM32F1 discovery board about a year ago but I haven't had the time to play with it. There are a number of reasons why I purchased it: 1) I wanted to start studying ARM devices on my way to getting a certification 2) A device that has …

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PIC Interrupt with PIC16F84A

So far we have discussed how to code microcontrollers sequentially, i.e., the device performs the code from top to bottom and may branch out to labels (via goto) or subroutines (via call). Now we'll be looking at PIC interrupt.

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The PIC16F84A - A Beginners Microcontroller

PIC16F84A

We'll start with the PIC16F84A - a.k.a the beginner's microcontroller. This MCU from Microchip has been around since 1998 and is the successor to the very first serially programmable PIC, the PIC16C84. The PIC16F84A is often the starting point for learning PIC microcontrollers because it only has 35 assembly language …

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An Introduction to PIC Assembly Language Programming

PIC Assembly Language

Most people have nightmares about PIC assembly language programming while some would say it's a waste of time. I've experienced both so I agree. PICs can be programmed much easier using high-level languages like C and Basic. However, learning to code in assembly helps you learn more about the microcontroller's …

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