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kooksay

Programmer with a passion for electronic circuit design and amateur radio in my spare time.

Beijing
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kooksay
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This user joined on 06/15/2025.

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Compatible with 3.5mm TS, TRS, TRRS Audio Jacks
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Bidirectional 1×2 3.5mm Audio Switcher

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Flyback DCDC for Pi
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PoE-PD Hat for Raspberry Pi 3B+/4B

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A physical switch for my computer to choose between Linux and Windows
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Arduino connects to the TX line (of a router, RPI) and display serial data on smartphone over WiFi
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Hardware serial port monitor with WiFi

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Small USB unit which simulates keyboard and generates, keeps and types up to eight passwords
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Hardware password manager

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BlackIce is the fusion of FPGA & ARM - a low cost open source hardware FPGA dev board bound together with innovative open source toolchain
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BlackIce - Low Cost Open Hardware FPGA Dev Board

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