Tag: IoT - Johannes' Blog

Building IoT Device Clients in Swift with TinyTBDeviceClient

18 February 2026 Johannes Kinzig

IoT Linux My Libs Open Source Projects

Title image for TinyTBDeviceClient, showing a Raspberry Pi client device connected to a ThingsBoard server with an IoT dashboard in the background. A glowing padlock indicates a secure connection. — Title image created by the author using AI image generation tools.

As I work a lot in the field of IoT, I recently experimented with Swift on a Raspberry Pi. I also wanted to use it…

Building a Secure PKI for MQTT using OpenSSL: Root CA, Intermediate CA, and Server Certificates

3 February 2026 Johannes Kinzig

IoT Linux macOS Software Engineering

Designing a Modern PKI for MQTT with OpenSSL (EC, RSA, and Certificate Chains) — Title image created by the author using AI image generation tools.

Transport security is a fundamental requirement for any MQTT-based system, especially in IoT and industrial environments where devices often operate unattended and over public networks.

TBRESTClientLib – A ThingsBoard API Client written in Swift

26 February 2025 Johannes Kinzig

IoT My Libs Open Source Projects Software Engineering

TBRESTClientLib – an abstract picture showing computers, smartphones, tablet PCs and smart devices being interconnected — Title image created by the author using AI image generation tools.

Implementation of ThingsBoard’s ReST client API – written in Swift: When developing IoT and IIoT solutions, having a reliable IoT platform is crucial. For both…

Post for: #IoT (3 Posts)

Post for: #IoT ^{(3 Posts)}