Devices: Arduino, Jetson, RISC-V, and Open Firmware
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This Arduino Nano-based synthesizer can produce a wide range of intriguing sounds | Arduino Blog
Synthesizers have existed in their current form for several decades now. In essence, they generate simple waveforms that are then either added or subtracted together and modified through the use of filters, envelopes, and modulators to control pitch, volume, and several other characteristics. Due to their simplicity, many types of components can be combined to create them with a wide variety of unique characteristics.
Built by Ignacio Ríos, his take on the synthesizer incorporates an Arduino Nano along with a series of buttons, potentiometers, and an amplifier to produce sounds. It starts by taking a carrier frequency that is modulated by a secondary oscillator, similar to how FM radio functions. From here, four potentiometers modify how the carrier frequency responds to the modulated wave. Another four potentiometers change the attack, decay, sustain, and release durations, all of which are read by the Nano’s onboard ADC.
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3D Vision Camera powered by NVIDIA Jetson Nano SoM
This week, Orbbec presented a multi-mode Depth and 4K RGB camera capable of streaming processed images over Ethernet or USB in real-time. The Femto Mega leverages Microsoft’s ToF technology, a 6-DoF IMU along with an integrated Jetson Nano System-on-Module for AI processing.
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Forth Cracks RISC-V
Over the decades there have been many programming languages, some of which have flowered briefly, and others that have stuck around despite newer, better, and faster competition. Few languages embody this last group more than FORTH, over five decades old and still cropping up wherever a simple, elegant, fast, and compact stack-based programming language fits the bill. [Alexander Williams] has now taken it somewhere new, with a FORTH in RISC-V assembly which runs on the GD32 series of microcontrollers that are RISC-V lookalikes of the popular STM32 ARM parts.
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[Repeat] Google proclaims official Android RISC-V support
Google has officially announced that Android will support the RISC-V instruction set architecture. The announcement is from the RISC-V Summit held last month.
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Low-Cost 433 MHz Door Sensors Get Open Firmware
It’s an unfortunate reality these days that if you see a cheap piece of consumer electronics, there’s a good chance its only cheap because it’s designed to lock you into some ecosystem where you’ll either end up paying a subscription, or worse, have your personal information sold behind your back. One of the best tools we have against these sort of anti-consumer practices is the development of open source firmware replacements that put control of the device into the hands of the community, rather than a corporation.