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A $2 Microchip DSP board runs at 70 MHz with 16-bit resolution and samples four channels at 1 MHz simultaneously. Cheaper than an ATmega328, it's built for multi-channel data acquisition and fast sampling tasks.

A $2 Microchip DSP board runs at 70 MHz with 16-bit resolution and samples four channels at 1 MHz simultaneously. Cheaper than an ATmega328, it's built for multi-channel data acquisition and fast sampling tasks.
70 MHz DSP, 1 MHz sampling, 4-channel simultaneous, $2 chip, Microchip. What does it do? Anything you like, and quickly. Everything imaginable and more? It's cheaper than a 328, has a 1 MHz sampling rate, does 4 simultaneous if you need it, so if you do linear array kind of stuff, and it's a 70 MHz DSP, 16-bit.

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