[ 01 ] · A calculator. With a brain.
Snap
the photo. Get
the answer.
KalkMate looks exactly like an ordinary graphing calculator. But it hides something no other one has — a concealed camera and an AI model trained on Polish national matura exam papers (CKE) from the last 10 years.
You type nothing. You key in nothing. Just point the lens at the problem — and 1.2 seconds later the step-by-step solution appears on the OLED screen.
Battery
~6h
Answer
1.2s
Subjects
04
OV2640 camera
HIDDEN · 2MP
OLED · 256×64
∫ x² dx = x³/3 + C
KM v1.0
[ 02 ] · Workflow
Three moves. Zero
typing.
The whole interaction fits into a single gesture. No spelling out the problem, no keying in the formula, no hunting for a button.
Point the camera.
The hidden 2MP camera focuses automatically. One command handles it all: a problem from an exam paper, a notebook or a screen — as long as the text is visible.
STEP / AIM
AI reads it.
A model trained on Polish national matura exam papers (CKE) from 2014–2025 reads the problem, classifies the subject and type, and picks the right method.
STEP / ANALYSIS
Solution on OLED.
A complete step-by-step solution with formulas in LaTeX format. The result in under 1.2 seconds.
STEP / ANSWER
[ 03 ] · Subject coverage
Four matura exam
subjects.
Trained on Polish matura (CKE) exam papers from 2014–2025. It recognises the task type, applies the answer-key method and shows the full reasoning.
MAT · basic · extended
Mathematics
Example
f(x) = ax² + bx + c
- →Functions, limits, derivatives
- →Analytic geometry
- →Sequences, probability, combinatorics
FIZ · extended
Physics
Example
E = ½mv² + mgh
- →Mechanics, thermodynamics
- →Electromagnetism
- →Optics, nuclear physics
CHE · extended
Chemistry
Example
2H₂ + O₂ → 2H₂O
- →Stoichiometry, equilibria
- →Organic chemistry
- →Solutions, electrochemistry
BIO · extended
Biology
Example
ATP ⇌ ADP + Pᵢ
- →Genetics, biochemistry
- →Physiology, ecology
- →Evolution, biotechnology
10 years
Years of CKE papers in training
94%
Accuracy on matura exam tasks
1.2s
Average response time
[ 04 ] · Hardware
Polish hardware.
Down to the last detail.
PCB designed, soldered and tested in Poland. Every device carries a serial number and a 24-month warranty.
- MCU
- ESP32-WROVER-E
- Memory
- 8 MB PSRAM · 4 MB Flash
- WiFi
- 2.4 GHz 802.11 b/g/n
- Sensor
- OmniVision OV2640 · 2 MP
- Field of view
- 78°
- Autofocus
- Yes · 10–∞ cm
- Screen
- OLED SSD1322
- Resolution
- 256 × 64 px
- Contrast
- 10000:1
- Battery
- LiPo 3.7 V · 1200 mAh
- Runtime
- ~6 h mixed use
- Charging
- USB-C · ~2 h
[ 05 ] · Archive
From the workshop, straight
to your pocket.
Gallery · 05 shots
2025–2026 · KRK · PL
01 · Prototype v1
First soldered board — bring-up
02 · Display
OLED SSD1322 256×64
03 · Camera
OV2640 inside the casing
04 · PCB
Routed in Poland
05 · Test
Solving the 2024 matura exam
[ 06 ] · FAQ
Questions everyone
has.
Didn't find your answer? Drop me a line — I reply within 24h.
kontakt@kalkmate.pl ↗[ 07 ] · Order
Get one.
The rest is a formality.
KalkMate v1.0 — hand-assembled in Poland. Each unit has an individual serial number and a 24-month warranty. Free delivery to InPost Parcel Locker.
- 01KalkMate v1.0 device
- 0230 rating-plate stickers
- 03One month of AI Chat free
- 04USB-C cable
- 05User manual
- 06WiFi setup guide
Pre-sale price
-77% · free InPost shipping
/ production
Devices are hand-assembled. Lead time up to 4 weeks.