Creator tutorial thumbnail showing the morning printer · SchematikSource ↗

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Schematik · Original project source ↗

CAIBI ASSESSMENT

Morning Thermal Printer

CAIBI VERDICTBUILD IT

An ESP32 desk printer that turns weather and calendar data into a short physical morning briefing on receipt paper.

See what the build involves Original source ↗

Build or buy?

Compare the documented build with the purchase reference.

Build it yourself

Known parts cost£60–£75Build total not establishedPrinter and electronics; enclosure extra

Time: 45 minutes
Difficulty: 2/5
Physical processes: ESP32 · APIs & data

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Purchase reference

Buy price referencePrice not checkedNo priced alternative recorded

Check the source for the exact model, availability and what is included.

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What the prices cover

Current UK thermal-printer pricing plus an ESP32, dedicated 5V supply, breadboard/wiring and starter paper.

Includes: CSN-A2 or compatible printer; ESP32 dev board; Dedicated 5V supply; Breadboard/jumpers; Starter thermal paper.

Not included: Enclosure; Shipping; Optional Google services.

Build evidence recorded 4 Sep 2026. Currency conversions are approximate.

The value is the custom daily physical briefing and its data integrations. Ordinary receipt printers are components rather than substitutes for the finished behaviour.

BUILD AT A GLANCE

Source view and main parts

Check the source ↗

Creator tutorial thumbnail showing the morning printer · Schematik ↗

PHYSICAL BUILD6 key parts or groups

No.	Source specification
01	ESP32-WROOM-32 development board
02	CSN-A2 or compatible mini thermal receipt printer
03	Breadboard and jumper wires
04	Dedicated 5 V power supply for the printer
05	USB power and data connection for ESP32 development
06	Thermal receipt paper

Full source specifications

ESP32-WROOM-32 development board
CSN-A2 or compatible mini thermal receipt printer
Breadboard and jumper wires
Dedicated 5 V power supply for the printer, typically about 2 A
USB power and data connection for ESP32 development
Thermal receipt paper

TOOLS / PROCESSES2 involved

ESP32
APIs & data

The real-world work

YOU STILL HAVE TOThe real-world work

Provide stable separate power for the thermal printer
Wire the printer and shared ground correctly
Judge whether the physical print layout is readable and useful
Turn the breadboard prototype into a tidy appliance

THE BUILD SEQUENCE

How it comes together

1Preparation

Wire the printer data connection
Connect printer TTL RX to ESP32 GPIO4 for UART2 TX and share ground between the ESP32 and printer supplies. Optional printer TX can be connected carefully for status feedback.
YOU
Power the printer separately
Use the dedicated 5 V supply for the printer head. The source explicitly warns against powering the printer from the ESP32 regulator because print-current spikes cause brownouts.
YOU

2Build and assembly

Configure network and data sources
Set Wi-Fi, time-zone details and any calendar credentials. Open-Meteo can provide weather without an API key.
AI + YOU
Build the daily brief
Use the starter firmware to combine date, weather, appointments and to-do space. AI can help change the data sources, formatting, logic and error handling.
AI

3Configure and test

Print and verify
Run the physical printer repeatedly and check power stability, line wrapping, character support and whether the paper output is actually useful at a glance.
YOU
Turn the prototype into an appliance
Add an enclosure, scheduled wake behaviour, better cable management or other data sources once the breadboard version is dependable.
AI + YOU

Benchmark this project

Use the Morning Thermal Printer prompt. Compare what different models deliver, then add what happened when you tried it.

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View the project prompt

CAIBI adaptation · Prompt 1.0 · Project source

Prompt for Morning Thermal Printer

CAIBI project benchmark: Morning Thermal Printer
Prompt version 1.0

Help me build Morning Thermal Printer using the existing creator project at https://www.schematik.io/blog/morning-thermal-printer-daily-briefing. This is a CAIBI benchmark adaptation of the project build brief, not a claim about how the creator used AI.

Project context:
- An ESP32 desk printer that turns weather and calendar data into a short physical morning briefing on receipt paper.
- Build context: ESP32-WROOM-32 development board; CSN-A2 or compatible mini thermal receipt printer; Breadboard and jumper wires; Dedicated 5 V power supply for the printer, typically about 2 A; USB power and data connection for ESP32 development; Thermal receipt paper.
- Where AI helps: API integration, Formatting, Calendar logic, Firmware changes, Debugging.
- Physical work: Wire printer, Provide separate power, Configure credentials, Mount hardware, Verify print output.
- Main limitation: The thermal printer needs its own stable 5V supply. Powering it from the ESP32 regulator is specifically warned against because the print head current causes brownouts.

Read the source first. Use its published design, files, dimensions and parts as the baseline; do not redesign it unless a missing detail requires a clearly labelled proposal. If you cannot access a source or verify a revision, say so.

Provide one practical build package:
1. Design and files: explain the source design, link the original editable files, and identify missing files or modifications.
2. Parts and fabrication: give quantities, exact variants and compatibility, plus a cutting or printing list where applicable. Preserve source dimensions; flag anything unconfirmed.
3. UK and US purchasing: direct product links, checked dates, stock, pack sizes, taxes, delivery and regional costs. Mark unverifiable details as unknown; do not invent links, prices or availability.
4. Assembly: an ordered guide covering fabrication, fitting, wiring or software as applicable, setup, checks and troubleshooting.
5. Cost and time: separate parts, fabrication, delivery, hands-on time and machine time, with assumptions and exclusions.
6. Function and ease: a test plan for the project's stated purpose, likely difficulties, required skills and any corrections or limitations.

Keep source facts, your proposals and items needing physical verification distinct. An estimate is not a measured build result. Do not claim to have built or tested hardware. Include failed attempts and omissions. If a section does not apply, say why.

Use the source as accessed during this run and record its revision or access date. The prompt is fixed; the linked source can change.

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Benchmark results 0

No reviewed results yet for Morning Thermal Printer. Add the first result →

AI IN THIS PROJECT

Get AI help on this build

CAIBI · AI CAN HELP

AI can help with

API integration
Formatting
Calendar logic
Firmware changes
Debugging

CAIBI · AI CAN'T DO

You still need to

Provide stable separate power for the thermal printer
Wire the printer and shared ground correctly
Judge whether the physical print layout is readable and useful
Turn the breadboard prototype into a tidy appliance

Original source AI use and prompts

SOURCEOriginal project AI use

The creator describes the Schematik workflow as describing the desired object, checking the generated wiring, deploying in the browser and using Serial Monitor feedback to steer fixes. The published article does not expose the exact initial natural-language prompt.

See it in the source ↗

CAIBI should preserve this as documented AI-assisted development, but must not invent an exact prompt that the source does not publish.

CAIBI STARTING PROMPTS

Copy a prompt for this build

Each prompt tells AI to keep the original project source as the reference and to flag anything you must verify on the real build.

Ways to take it further

AFTER THE FIRST BUILD

Ways to take it further

Task list integrationSports fixtures or scoresTravel and commute dataBitmap logosScheduled automatic printingCustom enclosure

More routes and resources

OTHER WAYS TO GET THERE

You do not have to follow one route.

ORIGINAL BUILDFollow the creator route

Use the published files and instructions as the baseline.

ALTERNATIVE PROJECTClawd Mochi

A small ESP32-C3 desk companion with animated faces, web controls and a published low-cost parts list.

REVIEWED RESOURCES

Useful places beyond the main source

DOCSOpen-Meteo API documentation

Weather-data source used by the project, including forecast fields and request parameters.

DOCSGoogle Calendar API documentation

Optional calendar integration route referenced by the build.

SOURCE · CAIBI · BUILDERS

What supports the verdict

SOURCESchematik

Schematik workshop build published May 2026 with linked build guide and documented firmware behaviour

Open source ↗

CAIBIBUILD IT

It is a clean example of software and public data becoming a physical ritual object. The hardware is modest, while the useful customisation lives in what the device fetches and prints.

Evidence: Strong

BUILDERSNo published reports yet

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First-hand evidence improves the assessment

What we want to know

What happened when you actually tried to make it.

Did it work?
Actual time and cost
What did you change?
What was harder than the source suggested?
Would you build it again?