Services with a price tag.

I have bundled the most common tasks into packages: fixed scope, fixed price, fixed deadline. Everything else is billed by time.

Fixed-price packages

Prices in Swiss francs. No VAT — what is in the quote is what is on the invoice. Guide values for the usual scope; the binding price is the one in the quote.
Package	Scope	Price	Duration
Landing page	One page, mobile-friendly, contact form, your content placed, one round of corrections.	from 900.–	1 week
Company website	Up to five pages, editable by yourself, search-engine basics, two rounds of corrections.	from 2 500.–	2–3 weeks
Automation	One recurring routine automated — such as capturing orders, generating quotes, transferring data between two programs. Instructions included.	from 1 500.–	1–2 weeks
Business tool	Tailored application for stock, orders, quotes or customer data. Runs in the browser, the data stays with you.	from 4 000.–	4–8 weeks
Printed circuit board	Schematic and layout to your specification, manufacturing data and bill of materials. On request sample production and firmware.	from 1 000.–	2–4 weeks

Work outside the packages is billed at an hourly rate. I state it in the quote, before you commit.

Business tools: Inventory, stock management, order and quote management, workshop jobs, reporting. Cut to your workflow rather than the other way round.
Automation: Make the always-identical steps disappear: pull data from e-mails, generate documents, couple systems, trigger reminders. With AI support where it genuinely helps.
Reporting: Bring the numbers from your systems together and present them clearly — as an overview that is right every day, not as a spreadsheet nobody maintains.
Apps: Mobile applications for Android where a website is not enough: data capture in the field, device connection via Bluetooth, operation without coverage.

Printed circuit board: Schematic and layout in KiCad, up to eight layers. Manufacturing data, bill of materials, assembly drawing. Support through manufacturing to the working sample.
Firmware: Control software for ESP32 and related microcontrollers: reading sensors, radio, Bluetooth, low-power operation, over-the-air updates.
Measuring in the field: Devices that have to run outdoors for years: solar supply with charge control, radio links over kilometres, weatherproof enclosures, self-monitoring.
Rebuild and retrofit: Extend existing devices, replace controls, swap out discontinued components, add interfaces.

Process technology: Metering, dosing and UV technology: sizing, troubleshooting, second opinion on existing plants. From around ten years of practice in this field.
Hospitality: Dishwashing and hygiene technology, water treatment, kitchen workflows. I know the equipment and the businesses that use it.
Feasibility: Before you commission development: what is technically possible, what it roughly costs, where the pitfalls are. Written assessment with a recommendation.

Not sure which drawer your task belongs in? Just write it down. If I am the wrong person, I will say so — and tell you whom I would ask instead.