ESP32 NodeMCU-32S ┌───────────────────────────────┐ │ GPIO5 ─────── SDA (SS) │ ── RC522 │ GPIO18 ─────── SCK │ ── RC522 │ GPIO23 ─────── MOSI │ ── RC522 │ GPIO19 ─────── MISO ...
Copyright (c) 2019 Arduino SA. All rights reserved. This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General ...
这次主要讲的是如何设计更小的PCB尺寸,为此我还打了四五次板,还是那句话:愿君少走弯路, 我会在这里分享我踩过的坑; 此坑主要是layout上的, 关于高频信号, 我们常说等差等长布线, 对于这个模块来说, 天线部分也挺遵循这个原则, 从贴片电感开始之后的那几个元 ...
Abstract: Inventory management has always been a pressing issue for companies and manufacturers alike. As the size of production expands, manufacturers and companies must calculate the math for ...
Abstract: While celebrating the 21st year since the very first IEEE 802.11 “legacy” 2 Mbit/s wireless local area network standard, the latest Wi-Fi newborn is today reaching the finish line, topping ...
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