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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

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25.10.2023
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Latest posts by Daniel Koller @daniel.dakoller.net

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.

11.10.2025 20:44 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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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

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

11.10.2025 20:44 πŸ‘ 2 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
Aladdin und die Tuntenlampe - Schwule TrΓ€ume aus 1001 Nacht | RosaKehlchen e.V. Das neue BΓΌhnenprogramm der RosaKehlchen: Eine Geschichte ΓΌber schwule MΓ€nnerfreundschaften. Premieren 24. & 25. Oktober 2025 in Mannheim.

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

11.10.2025 20:44 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

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

11.10.2025 20:44 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
ScanPay: Streamlining Event Payments with SumUp Devices - Daniel Koller's Blog Introducing ScanPay: A Payment Solution for Community Events When organizing community events like theater performances, efficient payment processing can make a huge difference in the audience exp...

πŸš€ **Introducing ScanPay: Simplifying Event Payments with SumUp**

I'm excited to share my latest project that solves a common problem at community events - collecting payments without making attendees download apps!

Blog post: dakoller.net/blog/2025101...

#SumUp #Payments #EventTech

11.10.2025 20:44 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

Home assistant can push it toward the influx extension, from where pandas might be able to read it

20.09.2025 07:24 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
Enhancing Security and User Experience in the Markdown to EPUB Converter - Daniel Koller's Blog Today, I’m excited to share the latest updates to my Markdown to EPUB Converter project. This update focuses on enhancing security through optional authentication while maintaining a seamless user exp...

First release of the selfhosted #markdown 2 #epub converter: dakoller.net/blog/2025091... --> now with browser. ui and token authentication

10.09.2025 04:59 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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GitHub - dakoller/markdown-epub-converter: A simple Docker-based REST API that converts Markdown to EPUB format using Pandoc. Send markdown content via JSON, get an EPUB file back. A simple Docker-based REST API that converts Markdown to EPUB format using Pandoc. Send markdown content via JSON, get an EPUB file back. - dakoller/markdown-epub-converter

Started to build an #markdown 2 #epub converter, which you can self-host using docker-compose. This is part of personal knowledge intake & management, and it might be useful to somebody else as well. github.com/dakoller/mar... ...happy to get feedback and ideas!

07.09.2025 14:18 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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@continue.dev I recently followed the Discord Invite, but (even after going through the initial 4-step flow) I am not able to post anywhere. Any way to fix this?

28.08.2025 03:56 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
picture

picture

#goodmorning

10.05.2025 06:48 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

@carlomasala1.bsky.social Vielen Dank fΓΌr Ihren Vortrag im dai in Heidelberg zur Szenariotechnik! Haben Sie dazu eine Material-/Buchempfehlung zur Szenariotechnik?

24.04.2025 08:04 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Revid AI - Ideate, Publish, Go Viral | #1 AI Video Generator Create viral short videos for TikTok, Instagram, and YouTube. Turn ideas into content instantly. Ideate, create, edit, publish β€” all in one. No skills needed.

@tmaker.io what is the right way to get an image from an url in the video text integrated in #revid? At www.revid.ai/editor/vlBuc... you can see that the link is only read out loud.

25.03.2025 06:09 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

The python-based mvp server worked also via sse (vs stdio)

16.03.2025 21:16 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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GitHub - nerding-io/n8n-nodes-mcp: n8n custom node for MCP n8n custom node for MCP. Contribute to nerding-io/n8n-nodes-mcp development by creating an account on GitHub.

I just managed to call a python #mcp function from an #aiagent in #n8n using the cool community node from github.com/nerding-io/n...

16.03.2025 21:16 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
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Stay ahead of the curve with Feedly AI Welcome to Feedly β€” the platform where businesses and curious minds stay ahead of the curve! We're passionate about helping teams track competitors, discover new trends, and research emerging security...

@feedly.com is it possible that feedly.com/i/team/api is down?

14.03.2025 04:57 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

@obsidian.md I would like to update my vault with documents, which I create via python scripts. Does obisidan sync have something like a public API, where I can remotely manage the content of my vault? (without being bound to do it on a specific computer - which works today via iCloud as well).

27.02.2025 10:23 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

@usetrmnl.com hi, when I missed buying the developer package with the initial order ( which is not delivered yet), is there a way to pay the fee for the developer package?

17.02.2025 19:26 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 1
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#makeartnow aus der Kunsthalle hamburg

09.02.2025 13:52 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Dr. Joscha Bach: KI, Gehirn, Intelligenz, Bewußtsein, Universum | Eduard Heindl EnergiegesprÀch #081 Podcast-Folge · EnergiegesprÀch mit Prof. Heindl · 04.01.2025 · 2 Std. 26 Min.

Absolute #podcast #hΓΆrempfehlung fΓΌr podcasts.apple.com/de/podcast/e... … da gehts 2h+ um das was hinter KI und LLMs steht und danach kommt ( selten so intensiv zugehΓΆrt)

11.01.2025 08:08 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

I just learned today about #crewai 's new feature related to ensured structured agent output using pydantic and flows, which resembles something like a workflow functionality.

09.01.2025 13:24 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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GitHub - dakoller/matomo_prometheus_exporter: Exports the Visits Summary from a selfhosted matomo instance via prometheus Exports the Visits Summary from a selfhosted matomo instance via prometheus - dakoller/matomo_prometheus_exporter

since i needed that as well, here is a #prometheus #exporter for the VisitsSummary stats from a self-hosted #matomo instance: github.com/dakoller/mat... ...feedback appreciated!

23.12.2024 06:45 πŸ‘ 5 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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GitHub - dakoller/sendy-prometheus-metrics: Contains a prometheus exporter for the subscriber metrics in your Sendy installation Contains a prometheus exporter for the subscriber metrics in your Sendy installation - dakoller/sendy-prometheus-metrics

Just needed a #prometheus exporter, which grabs #mailinglist #subscriber counts from my #Sendy instance: in case this is relevant for you too, check out github.com/dakoller/sen...

23.12.2024 05:11 πŸ‘ 3 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

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?

05.12.2024 14:50 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
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I built the desk on my own, so that’s kind of personal

25.11.2024 11:57 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

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?

24.11.2024 07:24 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

More people from #heidelberg here?

23.11.2024 14:58 πŸ‘ 2 πŸ” 1 πŸ’¬ 1 πŸ“Œ 0

The second one

23.11.2024 14:57 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Which package did you use? Esp for the bio part?

22.11.2024 23:07 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

Elevenlabs, quite convenient python library

22.11.2024 11:18 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

Are you up to building a to interact with the #atproto #bsky api?

21.11.2024 08:16 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0