AZB-12 AN-01 · camp.notazizelse.xyz

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Application note AN-01 · U1

CAMP v2

2026 · camp.notazizelse.xyz
ABSTRACT

CAMP v2 is the board I designed for the electronics class at Technocamp 2026. It's an 80 × 80 mm carrier for an Arduino Nano that reads temperature, humidity and carbon monoxide, shows them on a small screen and sends them over USB. That's the same job the payload computer of a real CubeSat does.

Every part is through-hole, so a 12-year-old can solder it with a normal iron and no magnifying glass. The board has no chips of its own. The Nano does the thinking, and the board gives it clean wiring, the right resistors in the right places, and connectors that only fit one way.

Top side of the CAMP v2 PCB
Figure 1.Top side, rev B. The silkscreen says notazizelse@github.

1Key Specifications

Size
80 × 80 mm, 2 layers, all through-hole
Brain
Arduino Nano (ATmega328P) on sockets
Sensors
DHT11 temperature + humidity, MQ-7 carbon monoxide
Outputs
16×2 I²C LCD, two RGB LEDs, three buttons, USB serial
Tools
KiCad 10, LCSC parts, JLCPCB production files
Made for
Technocamp 2026, Robotics & Engineering Association, Turin Polytechnic University in Tashkent

2Functional Block Diagram

  1. inputsDHT11, MQ-7, 3 buttons
  2. brainArduino Nano
  3. outputs16×2 LCD, 2 RGB LEDs
  4. linkUSB serial
Figure 2.How CAMP v2 works, left to right

3Why I made it

At Technocamp I taught 200 students aged 12 to 17 to design PCBs and etch them with chemicals in a camp in the mountains. They needed a board that does something real, that a beginner can assemble, and that still teaches proper wiring. Loose sensor modules on a breadboard fall apart, so this board turns them into one instrument.

4How it works

The sensors and buttons on the left tell the Arduino something. The screen and LEDs on the right are how the Arduino tells you something. Nothing talks to anything else directly, every signal goes through the Nano. The LEDs sit in sockets so they can be swapped, and a jumper picks common-cathode or common-anode LEDs.

5Teaching with it

The build guide, troubleshooting guide and hardware reference are written in English and Uzbek. The back of the board says PER ASPERA AD ASTRA. This autumn I'm using the same board to teach 20 students at Turin Polytechnic, with boards ordered from China this time instead of etched by hand.

6Pictures

CAMP v2 with every connector labelled
Figure 3.Every connector, labelled for students
Block diagram of the board
Figure 4.Block diagram
Schematic
Figure 5.Schematic
Bottom side of the board
Figure 6.Bottom side
Copper pours on both layers
Figure 7.Copper pours
Front and back copper side by side
Figure 8.Front and back copper, the last check before ordering

7Technical Documents

AN-01-D1Build guideParts, pin map, soldering order, flashing and things to try.Read →AN-01-D2Yig'ish bo'yicha qo'llanmaThe same build guide in Uzbek.Read →AN-01-D3AssemblyStep by step soldering, in the order that's hardest to get wrong.Read →AN-01-D4When it doesn't workThe problems students actually hit, and fixes.Read →AN-01-D5Hardware referenceNetlist, design rules and fab notes for whoever makes rev C.Read →AN-01-D6Firmware notesWhat the Arduino sketch does and how to flash it.Read →AN-01-D7ChangelogRev A to rev B.Read →

8Design Files

9Source