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On PLAY Embedded you can find useful resources to getting started with embedded systems: media, examples and accurate descriptions are also provided. Come on, learn by doing!
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An object counter using an IR sensor and Arduino

An object counter using an IR sensor and Arduino

In this article we will resume the topic started with in “Detecting obstacle with IR Sensor and Arduino”. More in details, we are going to use the IR sensor like an objects counter.

The counter application is often used for:

counting people traversing a certain passage or entrance. For example, in commercial buildings there are gates which control user access or presence often used to optimize energy consumption; counting objects or merchandise in industrial sector; etc.

A counter can be made not only with IR technology but also with thermal imaging systems that use an continue reading...

Getting started with mikroe BUZZ Click using ChibiOS/HAL

Getting started with mikroe BUZZ Click using ChibiOS/HAL

BUZZ Click is a click board with a mikroBus form factor. It is substantially composed of a piezoelectric speaker having a resonant frequency at 3.8 kHz: this means we should expect best performances at this frequency. Let’s take a look to the principle of operation of DC and AC buzzer.

A piezoelectric loudspeaker also known as buzzer uses the inverse piezoelectric effect for generating sound. The piezoelectricity is a phenomena where mechanical stress produces the accumulation of electrical charges and then a voltage across the material. The inverse principle is true continue reading...

Mikroe Clicker 2 for STM32 and STLink v2

Mikroe Clicker 2 for STM32 and STLink v2

In this tutorial we are going to see how to connect a STLink v2 debugger to a Clicker 2 for STM32 enabling users to do debugging which could be very useful in development phases. A debugger is a computer program which is used to test and debug another program usually named Target.

In embedded things are slightly different since the code is executed on an external MCU and it is required an interface Computer-MCU. In this case the Target is the MCU and a debugger is composed by the ensemble of a hardware and a software tool. Nonetheless, when the majority of people is continue reading...

Detecting obstacle with IR Sensor and Arduino

Detecting obstacle with IR Sensor and Arduino

An object can be detected with an infrared system consisting of an infrared transmitter and a receiver. More in detail an IR transmitter, also known as IR LED, sends an infrared signal with a certain frequency compatible with an IR receiver which has the task to detect it. There are different kind of IR sensors for different type of application. IR technology is used, for example, in proximity sensors to detect a near object, in contrast sensors to find a path or in counting sensors to count objects.

The IR transmitter sends an infrared signal that, in case of a continue reading...

Getting started with mikroe Clicker 2 for STM32 with ChibiOS

Getting started with mikroe Clicker 2 for STM32 with ChibiOS

The Clicker 2 for STM32 is a compact development kit by mikroe (also known as MikroElektronika). This board is equipped with 2 mikroBUS socket that allow to connect the Click Boards. These boards, designed by mikroe, are small add-ons that allow to easily connect most common devices to your MCU. Indeed, in the last years mikroe has produced a lot of Click Boards (more than one hundred) with an extended documentation and with code examples.

During the Maker Faire Rome 2015, we meet some mikroe employee and we have explained them the purposes of PLAY Embedded. Some weeks continue reading...