Figure 2: When the Figure 1 circuit detects an IR signal, it powers and resets the microcontroller. After the IR transmission ends, the microcontroller suspends itself by releasing the Hold line.

Click to Enlarge Image Figure 2. This is the analog portion of the block diagram in Figure 1. The amplifiers and voltage reference tie into the ADC, and the ADC ties to the microcontroller. Building a ...

This circuit solved a problem encountered in developing a portable device with an ARM Cortex-M0 processor. The power supply consisted of two AA batteries (2 × 1.5 V), and I needed to signal the ...

Learn how to improve your performance, reliability, and efficiency in designing microcontroller-based circuits for real-time feedback. Discover tips on hardware, software, communication, and testing.

Most of you know how an NFC tag works. The reader creates an RF field that has enough energy to power the electronics in the tag; when the tag wakes up, two-way communication ensues. We’re ...

This microcontroller-based control circuit adjusts the speed of a small permanent-magnet DC motor to one of four speeds as selected by a pair of photosensors.

This project presents the design and implementation of a dual-fan PWM cooling circuit, integrating a compact and efficient power supply with intelligent fan speed regulation. The circuit consists of ...