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Serial / RS232

#Serial / RS232

3 articles
Hardware / IoT
Reading an Unknown Modbus Device: Verify Before Interpreting
Hardware

Reading an Unknown Modbus Device: Verify Before Interpreting

My notes on tracking down an undocumented device on an RS485 bus, from scanning baud rates and addresses one combination at a time to proving which registers hold live values and which are dead, and the lesson that guessing a device's type from number patterns alone can lead to months of misinterpretation.

#modbus#rs485#serial#iot
11 min read·14 Oct
Read a Toledo RS-232 Scale over Bluetooth with PowerShell
Linux

Read a Toledo RS-232 Scale over Bluetooth with PowerShell

Connect a TWT-01 digital scale with only an RS-232 port to a PC through a BT578 Bluetooth adapter, then read its weight in real time with PowerShell — from Bluetooth pairing and finding the COM port by MAC address to decoding 18-byte Toledo Continuous frames and the null-byte and scale auto-sleep pitfalls I encountered in practice.

#serial#windows#automation#iot
8 min read·20 Jul
USB in WSL2 with usbipd-win — Real Hardware for Linux on Windows
Linux

USB in WSL2 with usbipd-win — Real Hardware for Linux on Windows

WSL2 cannot see USB devices because it is a VM without a USB controller — usbipd-win passes devices from Windows directly to the WSL kernel with 3 commands, list/bind/attach, plus lessons from actual use: attachments drop when unplugged, the CRLF trap, and USB modems taking over the default route

#usbip#wsl2#windows#linux
7 min read·11 Jul