理论
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洪城小电工 on 简书
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从零开始理解 IEC104 协议之一 104 规约帧格式, bak 从零开始理解 IEC104 协议之二 基础知识, bak 从零开始理解 IEC104 协议之三 主要过程中的一些技术细节, bak 从零开始理解 IEC104 协议之四 工程调试经验总结, bak 从零开始理解 IEC104 协议之五 数据安全, bak 工具
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经典、简约的 101 和 104 主站、从站模拟器
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PMA 使用方法 by forum.huawei, bak 101_104_MASTER, bak 其他
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看起来比较不错的一款收费软件 CNY55~70(没有试过)
Coral Edge Accelerator
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ML accelerator: Edge TPU ASIC (application-specific integrated circuit) designed by Google. Provides high-performance ML inferencing for TensorFlow Lite Models. USB 3.1 (gen 1) port and cable (SuperSpeed, 5Gb/s transfer speed) Dimensions: 30 x 65 x 8mm Price: USD74.99 in 2019, USD $ 60 in 2021, ¥ 740 @JD.com 0.5 watts/TOPS MAX 4 TOPS (int8), 2W. TF Lite + Debian only. Not available world wide Intel NCS2 Neural Compute Stick 2
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Processor: Intel Movidius Myriad X Vision Processing Unit (VPU) USB 3.
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2021-02-20.
Category & Tags:
IoT,
Modbus,
RS232,
RS485,
RS422,
Serial,
COM,
CAN1939,
MQTT,
Emulator,
Simulator
OSI vs. Modbus Layers:
Tip:
RS-485/RS485’s new name is EIA-485. UART usually (99%) means TTL in shops, not 232/485. DB9 physical port usually (90%) means 232 electrical signals level standards. Modbus Protocol
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See Also:
【strongly recommend!】 a nice intro to Modbus and Modbus Enron. (Simply Modbus 软件收费,但是这个 Modbus 入门文档非常好) 一文看懂 Modbus 协议 Complete Modbus Guide. a good intro to Modbus. Each Modbus Slave has 4 tables with 9999 values in each table.
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2021-02-20.
Category & Tags:
MQTT,
IoT
Server
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ActiveMq Classic
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Require: JAVA_HOME (JDK is preferred than JRE, if in development, as JRE ∈ JDK. 150MB) && reboot.
e.g.: Apache ActiveMq (ref, bak).
cd bin ./activemq-admin.bat create mybroker cd mybroker/bin/ mybroker.bat start http://127.0.0.1:8161/
EMQX
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Require: Erlang (150MB) (will install MS VC++ Redist. 2015).
ref
download
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https://www.emqx.io/downloads?os=Windows
hands-on
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web: localhost:18083 default account: admin/public
ref: EMQX dashboard, bak
ref: EMQX+Prometheus+Grafana:MQTT 数据可视化监控实践, bak
Client
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e.
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