microcontroller

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How to Generate a High-Precision Waveform Using a DAC and a Custom PCB

In this article, we’ll develop firmware that will serve as the basis for high-precision, high-speed signal generation. I recently designed an arbitrary waveform generator (AWG) PCB that is built around a C8051F360microcontroller and a TxDAC from Analog Devices. These two ICs communicate via a parallel interface that allows me to generate higher-frequency analog signals by seeking […]

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Microchip’s New Open Source SAMA5D27 SOM Module Runs Mainline Linux

Microchip’s New Open Source SAMA5D27 SOM Module Runs Mainline Linux

American microcontroller manufacturer company Microchip has unveiled an open source, mainline Linux ready “SAMA5D27 SOM” module. This module is based on a SiP implementation of its Cortex-A5-based SAMA5D27 SoC with 128MB RAM. The 40 x 38mm module is also compatible with a SOM1-EK1 dev board. SAMA5D27 SOM1 The SAMA5D27 SOM is Microchip’s first computer-on-module based on a Linux-ready application processor, and

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Phytec Develops Three PhyCore Modules – i.MX8 i.MX8M and iMX8X Driven By Linux

Phytec Develops Three PhyCore Modules – i.MX8, i.MX8M, and iMX8X, Driven By Linux

Phytec has updated their product pages for three new PhyCore modules, all of which support Linux. The three modules, which employ three different flavors of i.MX8 SOC is phyCORE-i.MX 8X, i.MX 8M, and i.MX 8 SBCs. The PhyCore COMs are based on NXP’s Cortex-A53 based i.MX8M, its -A53 and -A72 equipped i.MX8 Quad, and its -A35 based i.MX8X. phyCore-i.MX 8X The i.MX8X SoC found

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Raspberry Pi RF Frequency Counter

Raspberry Pi RF Frequency Counter

I build a lot of RF circuits, and often it’s convenient to measure and log frequency with a computer. Previously I’ve built standalone frequency counters, frequency counters with a PC interface, and even hacked a classic frequency counter to add USB interface (twice, actually). My latest device uses only 2 microchips to provide a Raspberry Pi with

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The Occams Microcontroller Rig

The Occam’s Microcontroller Rig

The intention of the article is to highlight opportunities presented by incorporating simple modern digital methods in the design of SPRAT-style radios – not to promote one particular design. The ideas in the article have been demonstrated in the construction of a simple rig, a picture of which appears on the front cover of SPRAT

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