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Roland Pelayo

Roland Pelayo started TMM in 2015. He is a firmware engineer who has over ten years of experience in developing electronic and microcontroller-based systems. Roland's designs include medical devices, security and automation, robots, emergency alert systems, and educational training modules.   Have something that you like Roland to write about here? or do you need consultation for microcontroller firmware projects? just contact him via the contact page.

PIC16F877A Stepper Motor Controller

PIC16F877A Stepper Motor Controller

This project is a stepper motor controller featuring the PIC16F877A microcontroller and coded using XC8. The controller has three control buttons: start, stop, forward and reverse. The project was created with a six-wire unipolar stepper motor in mind but may work with other stepper motors with some modifications.

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How to Use the E32-TTL-100 SX1278 LoRa Module

E32-TTL-100 SX1278 LoRa Module

LoRa is a promising low-power, long-range wireless transmission protocol developed by Semtech as part of the emergence of the Internet of Things (IoT). Simply put, it is a method for sending data separate from WiFi, Zigbee, or Bluetooth. Its low power consumption amidst a very long range of transmission (up …

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Arduino Boards

Arduino Boards

The number of Arduino boards have increased over the years; some have been discontinued while others are still available. The choice of which board to use depends on several factors: price, features, availability, ease of use, etc. Here’s a summary of all Arduino boards with their pros and cons.

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Adding WiFi to PocketBeagle

PocketBeagle WiFi DIY

For the next part of my series on PocketBeagle, I will show how to add WiFi connectivity to the board. This board doesn’t come with built-in WiFi like the Raspberry Pi Zero W. With a simple hack, I managed to add WiFi connectivity to it.

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How to Use a Flex Sensor

Flex Sensor

A flex sensor can be used with a microcontroller to detect or measure bending.  In this tutorial, I will show how to interface this sensor with an Arduino UNO and discuss some possible flex sensor applications and projects.

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Getting Started with PocketBeagle Mini SBC

I am a fan of the BeagleBone Black. Thus when I heard that a small-body version of the BBB is now available, I purchased it immediately even if it costs twice as much as the other small-body SBC, the Raspberry Pi Zero. The PocketBeagle, as it’s called, also doesn’t have …

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