Learning Goals 5 min
The Arduino Certification Exam tests your Level 1–4 knowledge in a structured format. Before sample questions, you need to know the exam's shape: 36 questions, 75 minutes, 8 knowledge domains, pass mark 60%. By the end of this lesson you will:
- Describe the exam logistics: format, duration, pass mark, retake policy.
- List the 8 knowledge domains with their approximate question weights.
- Know which Level (1, 2, 3, 4) covered each domain's main material.
Warm-Up 10 min
Today is reading + planning. No build.
What the exam is
The Arduino Certification (Fundamentals level) is a proctored online exam offered by Arduino. Pass it = you get a digital badge + certificate. Useful for college applications, internships, and as a milestone.
Quick facts
| Property | Value |
|---|---|
| Questions | 36 multiple choice |
| Duration | 75 minutes |
| Pass mark | ~60% (varies; published per exam window) |
| Retake policy | 1 retake included; further attempts paid |
| Where | Online; via Arduino.cc's certification page |
| Cost | Varies (often $30 for students) |
New Concept · The 8 domains 25 min
Domain breakdown
| # | Domain | Weight | Covered in |
|---|---|---|---|
| 1 | Electricity | ~10% | L01 (Ohm's law, voltage / current / resistance) |
| 2 | Reading Schematics & Datasheets | ~10% | L01-13, L02-46, L03-47, L04 modules |
| 3 | Components | ~15% | L01-L02 (LEDs, resistors, capacitors, transistors, motors, sensors) |
| 4 | Arduino IDE & Boards | ~10% | L01-02, L04-01..06 |
| 5 | Programming Syntax & Concepts | ~15% | L01-L03 (variables, loops, conditionals, functions, OOP) |
| 6 | Inputs & Outputs / PWM | ~15% | L01-08, L01-16, L02-02..04 |
| 7 | Programming Logic & Algorithms | ~15% | L01-L03 (state machines, debouncing, control flow) |
| 8 | Frameworks & Boards | ~10% | L01-L04 (UNO vs Mega vs Nano, libraries, IoT Cloud) |
Total = 100%. Question counts ≈ percentages × 36. Domain 1 has ~3–4 questions; Domain 5 / 6 / 7 each ~5–6.
What kind of questions
4-option multiple choice. Themes:
- Pick the correct value (resistor calculation, voltage divider).
- Identify a symbol (resistor, capacitor, diode, transistor).
- Predict program output (trace a small sketch).
- Choose the right function / library / pin (PWM-capable? interrupt-capable?).
- Decode a binary / hex / bit-shift operation.
- Identify a wiring fault (which connection is wrong).
NO essays. NO live coding. Just multiple choice. Stay efficient — ~125 seconds per question.
Study strategy (5 days before exam)
| Day | Focus |
|---|---|
| Day −5 | Re-read your L1 + L2 recap notes. Identify weak topics. |
| Day −4 | Domains 1, 2, 3 (electricity, schematics, components). Quiz yourself. |
| Day −3 | Domains 4, 5 (IDE, syntax). Practice tracing sketches. |
| Day −2 | Domains 6, 7 (I/O + PWM, logic / algorithms). Practice predicting outputs. |
| Day −1 | Domain 8 (boards). Take a mock exam (L04-48). |
| Exam day | Light review only. Sleep well. Eat. Calm. |
Common pitfalls
- Spending 5 minutes on one question. Cap at 2.5 min; flag + return later.
- Over-thinking. The exam tests fundamentals, not edge cases.
- Failing to read all 4 options before picking. Multiple plausible answers; one is "most correct".
- Ignoring negative wording. "Which is NOT a valid...". Read carefully.
Worked Example · Practice question pattern 20 min
Sample 1 (Domain 1)
An LED has a forward voltage of 2 V and you want 15 mA through it from a 5 V source. What resistor?
- 50 Ω
- 100 Ω
- 200 Ω
- 330 Ω
Answer
R = V/I = (5 − 2) / 0.015 = 200 Ω. Answer: 3. (220 Ω is the nearest standard value used in practice.)
Sample 2 (Domain 5 / 7)
int n = 0;
for (int i = 1; i <= 4; i++) {
if (i % 2 == 0) n += i;
}
Serial.println(n);What is printed?
- 2
- 4
- 6
- 10
Answer
Even values of i: 2 + 4 = 6. Answer: 3.
Sample 3 (Domain 6)
On an Arduino UNO, which pin is NOT capable of analogWrite?
- 3
- 5
- 7
- 9
Answer
UNO PWM pins: 3, 5, 6, 9, 10, 11. Pin 7 is NOT PWM. Answer: 3 (pin 7).
Sample 4 (Domain 8)
Which board has the most flash memory?
- UNO R3
- Nano 33 BLE
- Mega 2560
- Pro Mini
Answer
Nano 33 BLE: 1 MB. UNO/Pro Mini: 32 KB. Mega: 256 KB. Answer: 2.
Try It Yourself · Self-assessment 15 min
For each of the 8 domains, rate your confidence (1–5). Mark them in your notebook:
- Domain 1 — Electricity
- Domain 2 — Schematics & Datasheets
- Domain 3 — Components
- Domain 4 — IDE & Boards
- Domain 5 — Programming Syntax
- Domain 6 — Inputs / Outputs / PWM
- Domain 7 — Programming Logic & Algorithms
- Domain 8 — Frameworks & Boards
Anywhere you scored ≤ 3, that's your priority for revision. Tomorrow we walk through domains 1-4 in depth.
Mini-Challenge · Build a personal study plan 10 min
- List the 8 domains.
- Rate confidence 1-5.
- For each ≤ 3 domain, list 2-3 lessons to re-read or projects to redo.
- Allocate 30 minutes per weak domain over the next week.
- Stick to the schedule.
Recap 5 min
36 questions, 75 minutes, 8 domains. Multiple choice. Pass at ~60%. The L1–L4 lessons together cover everything; targeted revision per domain. Tomorrow we drill domains 1-4 with sample questions.
- Arduino Certification
- Official credential offered by Arduino. Tests fundamental knowledge across 8 domains.
- Domain
- One of 8 knowledge areas tested. Weights add to 100%.
- Multiple choice
- 4 options, pick 1. No partial credit; no penalty for guessing.
- Proctored
- Monitored exam — webcam + screen share. Make sure you have a stable setup.
- Flag question
- UI feature to mark a question for revisit. Use generously — gets you through the exam without getting stuck.
- Retake policy
- The number of allowed re-attempts and the cooldown between them.
Homework 5 min
- Self-assess on all 8 domains. Note weak ones.
- Plan your week-before-exam revision.
- Read ahead to ARD-L04-46 (Domains 1-4 Walkthrough).