PLAY Embedded is a blog about embedded systems. We created this blog in the 2015 to share our discoveries with enthusiasts all around the world. This blog is largely focused on the usage of free and open source software.
All the content on this website is created in our spare time, and we have no interest in make any money from this. This blog is completely ads free and we love to get in touch with our small but passionate community: any feedback and suggestion is very welcome.
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At the recent event “ST = Life Augmented”, held in Milan during the Class Digital Experience Week, STMicroelectronics has raffled various development kits, for attendees who enrolled to the event through the Pepite blog. Apart to the famous STM32 Nucleo-64 board and some of its Expansion Board ...
The STM32 Nucleo-144 is a new series of development board by STMicroelectronics. It is the third announced series titled Nucleo. Each Nucleo-144 share the same pin map for each board and features a new connector named ST ZIO which is compatible with Arduino Uno Rev3 connector.
This new series ...
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:
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 ...
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 ...
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 ...
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 ...
In past, building OpenOCD under Windows was really complicated since it has a lot of dependencies and not was easily available under windows. With MSYS2 this task has become very simple and, if you need to use the latest stable version of OpenOCD in MSYS2, it is available as binary and could be ...
The joystick proposed here is much known between makers. It provides two axis and a key button and every axis is actually a potentiometer: that means axis data is analogue and we need to use ADC to read its positioning.
Potentiometers are provided of springs so, without forcing, wipers are ...
We have already introduced MAX7219 in STM32, ChibiOS and a 8×8 LED Matrix, so we are going to jump directly to code section. For convenience we just report link to documentation:
MAX7219 Datasheet
Note that even if pins are arranged in a different way, pin-out remains the same of the 8×8 LED ...
Using Infra-Red for remote control is a technology born in the 70’s and after 40 years it is still used because the good ratio performances-costs and low power consumption. IR remote require a line of sight, because of that latest remote includes bluetooth technology.
Today it is possible to ...
Widely used in sound mixers, the slider can be used as input for many applications. There isn’t so much to say as this device is made by two potentiometers working together. Indeed, when the cursor slides, it changes the position of two side potentiometers.
The slider shown in Fig.1 has six ...