Daniel Koller
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Daniel Koller
@daniel.dakoller.net
IT Manager @ #SAP, #Selfpublisher, #hydroponic #gardener , #historybuff, #choirsinger, gay

from Heidelberg, Germany

Opinions are my own
Current limitations:
- No VAT handling yet
- SumUp Solo+Printer device not supported

Currently working on adding thermal receipt printing functionality!

I'd love feedback from the community on other features you'd find useful.
October 11, 2025 at 8:44 PM
Technical details: ScanPay supports multiple card readers with custom naming, enables transaction cancellations, and is containerized with Docker for easy deployment.

The code is open source: github.com/dakoller/sca...

#OpenSource #DeveloperTools
GitHub - dakoller/scanpay: Turn any smartphone into a POS terminal with printable QR codes for SumUp card readers. Fast, self-hosted, Docker-ready.
Turn any smartphone into a POS terminal with printable QR codes for SumUp card readers. Fast, self-hosted, Docker-ready. - dakoller/scanpay
github.com
October 11, 2025 at 8:44 PM
Originally built for collecting donations at community events, I'm now implementing ScanPay for the upcoming Aladdin musical (aladdin.rosakehlchen.de) to handle refreshments, tickets, and merchandise sales.

#CommunityTheater #Events
Aladdin und die Tuntenlampe - Schwule Träume aus 1001 Nacht | RosaKehlchen e.V.
Das neue Bühnenprogramm der RosaKehlchen: Eine Geschichte über schwule Männerfreundschaften. Premieren 24. & 25. Oktober 2025 in Mannheim.
aladdin.rosakehlchen.de
October 11, 2025 at 8:44 PM
ScanPay generates QR codes that instantly trigger SumUp card reader checkouts when scanned.

Simply print QR codes, display them at your event, and attendees scan with their phone camera to pay. No app installation required!

#QRCodes #ContactlessPayment
October 11, 2025 at 8:44 PM
Home assistant can push it toward the influx extension, from where pandas might be able to read it
September 20, 2025 at 7:24 AM
The python-based mvp server worked also via sse (vs stdio)
March 16, 2025 at 9:16 PM
I was looking for a meaningful integration of bpmn and python code ( partly in order to sort out some nasty state management questions for a workflow), but did not find a good solution. Any recommendations?
December 5, 2024 at 2:50 PM
I built the desk on my own, so that’s kind of personal
November 25, 2024 at 11:57 AM
Just for curiosity: how does the labeling work with the at-protocol? Is it - technically - some attribute, which you assign to another users profile, which gets pickup up by the Bluesky client?
November 24, 2024 at 7:24 AM