Free Elektor Article: Card Sound
Audio

Free Elektor Article: Card Sound

With a smartphone or an MP3 player it’s easy to play audio files, but generally not at room strength or if you can, only in wretched quality. The Card Sound project makes it possible to fill the room with music and have excellent sound reproduction! This lightweight and compact player...

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Meet the Next-gen Lithium-Sulfur Batteries
Power

Meet the Next-gen Lithium-Sulfur Batteries

What would you give for a battery, 5x the storage capacity of whatever you’re reading from? Well, the countdown to commercial availability for batteries of this type of capacity has already begun and it would be considerably cheaper than then currently available batteries. This...

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Dual Forward/Reverse DC Motor Driver with Brake for Robots
Motor

Dual Forward/Reverse DC Motor Driver with Brake for Robots

This high current forward-reverse DC motor driver is built using STK681-332 IC from ON Semiconductor. The circuit can drive brushed DC Motor with up to 12 A peak current. The circuit requires 3 input signals: Enable for PWM input for speed control, IN1 and IN2 to change the motor...

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Dual Forward/Reverse DC Motor Driver with Brake for Robots

Dual Forward/Reverse DC Motor Driver with Brake for Robots

This high current forward-reverse DC motor driver is built using STK681-332 IC from ON Semiconductor. The circuit can drive brushed DC Motor with up to 12 A peak current. The circuit requires 3 input signals: Enable for PWM input for speed control, IN1 and IN2 to change the motor...

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Multi-sensor SpO2 and Heart Rate Monitor (HRM) reference design with Bluetooth® 5
Sensor

Multi-sensor SpO2 and Heart Rate Monitor (HRM) reference design with Bluetooth® 5

This reference design enables a wearable, optimized saturation of peripheral capillary oxygen (SpO2) and multi-sensor, multi-wavelength optical heart rate monitor (HRM). It uses AFE4420 device, which is a single-chip, bio-sensing front end for photoplethysmography (PPG) measurements. It...

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ST Releases Compact 32-pin STM8 Nucleo Boards
Mcu

ST Releases Compact 32-pin STM8 Nucleo Boards

STMicroelectronics is making design starts using 8-bit STM8 microcontrollers (MCUs) faster, more affordable, and more accessible for creative minds of all types by introducing new development boards in the easy-to-use Nucleo-32 form factor. The compact boards are controlled and powered...

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ONiO.zero microcontroller runs without a battery
IoT

ONiO.zero microcontroller runs without a battery

It’s becoming quite obvious that traditional batteries are limiting the progress of IoT devices. They are expensive, they contain harmful chemicals and most importantly All-Batteries-Will-Die. Vemund Kval Bakken chief technology officer and co-founder at ONiO say the real problem with...

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Arduino library to draw text and graphics on BLE Thermal Printers
Arduino

Arduino library to draw text and graphics on BLE Thermal Printers

BitBank Software, Inc., written by Larry Bank, [email protected] This Arduino library allows you to easily generate text and graphics and send them to a BLE thermal printer. Since there are many different BLE APIs depending on the board manufacturer, I decided to support the more...

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