Devices: Arduino, ESP32, and More
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Analyze the ambient sound around you with this Arduino setup
Like the visualizer of the equalizer on an old stereo receiver, this displays the levels of several frequency bands within the audio it monitors. In this case, that audio is the sound around the device collected by an onboard microphone. It shows the levels for seven different frequencies: 63Hz, 160Hz, 400Hz, 1kHz, 2.5kHz, 6.3kHz, and 16kHz. Most devices like this use LEDs to show the levels, but this shows them on a OLED screen instead and that allows for more flexibility.
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New Open Source Hardware design is verified: ESP32-SBC-FabGL single board computer based on FabGL library with PS2 keyboard, mouse and VGA display with many retro computer emulators
This is how the idea for ESP32-SBC-FabGL was born. I wanted to create a board that could be used as a graphics/sound/IO co-processor for other retro computers based on different processors.
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Debix Model B SBC targets industrial embedded applications
The Debix Model B is a single board computer integrating the NXP i.MX8M Plus processor with 2.3 TOPs NPU and with extended operating temperature range. The new embedded device comes in a Raspberry Pi form-factor and offers similar peripherals.