The Carel STone build error that was really an empty Git repo
25.07.2026
Hubert Lepiarczyk
~6 min read
The compiler was happy. 26,708 lines of Structured Text compiled, zero errors, memory budget green. Then the build died on the very last step, with a …
STone
Carel
git
build
flash
debugging
c.pCO
How to ship a .pack for a Carel STone controller that just works
11.07.2026
Hubert
~5 min read
Embed profiles, configuration and languages into one .pack, so a brand-new, blank controller runs the full application from the first power-up. A …
STone
Carel
c.pCO
commissioning
deployment
Monitoring your Carel BOSS devices over Redfish — from zero to a working API
26.05.2026
Hubert Lepiarczyk
~8 min read
Carel BOSS has a quietly powerful feature that almost nobody uses: a built-in Redfish server. With a bit of setup you can read live data from every …
carel
boss
redfish
odata
mockup-template
bruno
Object-Oriented Programming in STone
A Complete Guide
04.04.2026
Hubert
~20 min read
Object-Oriented Programming in STone
A Complete Guide This article is a collection of rules and conventions for object-oriented programming in …
STone
OOP
Structured Text
PLC
automation
What's Inside a CAREL c.pCO Controller? Architecture of an HVAC/R PLC
12.03.2026
Hubert Lepiarczyk
~9 min read
If you work in industrial refrigeration or HVAC, you’ve almost certainly programmed a CAREL controller. But have you ever wondered what’s …
carel
cpco
plc
rtos
hvacr
embedded
iec-61131
Complete OpenVPN Setup for Carel Boss Devices on Rocky Linux 9.5
31.08.2025
Hubert Lepiarczyk
~5 min read
Prerequisites Rocky Linux 9.5 server with root/sudo access Public IP or domain name reachable on 1194/UDP Boss web access to upload client …
openvpn
carel
boss
rocky-linux
vpn
ot-security