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Arduino Uno R3: Assembled from Arduino's Open UNO-TH Rev3e Design Files and Flashed over ICSP
Ed

Dicipta oleh

Ed

2. November 2026FI
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Arduino Uno R3: Assembled from Arduino's Open UNO-TH Rev3e Design Files and Flashed over ICSP

The Arduino Uno R3 is open hardware: Arduino publishes its schematic and board layout. This blueprint builds one from those files, part by part, then loads the firmware into its two processors. Result: an Arduino Uno R3. An ATmega328P (16 MHz, 32 kB flash, 2 kB SRAM, 1 kB EEPROM) runs your programs; an ATmega16U2 turns USB into its serial link. It runs from USB (5.5 V at most) or 6-20 V at the DC jack. Source: Arduino UNO-TH_Rev3e design files and the A000066 schematic and datasheet (Arduino, CC BY-SA). Unknown: how every bought part is made; no public source in hand says. The soldering method is ours. Picture: Wikimedia Commons.
Lanjutan
1 day

Arahan

1

Get the bare board

Have the two-layer board made to Arduino's UNO-TH_Rev3e board layout (the .brd file of the design files). Check it against the schematic before fitting anything.

Bahan untuk langkah ini:

Papan litar bercetakPapan litar bercetak1 UNO-TH Rev3e layout

Alatan diperlukan:

Kanta Pembesar Tukang EmasKanta Pembesar Tukang Emas
2

Fit the small surface-mount parts

Solder the chip parts to their marked places: resistor arrays RN1 (10K), RN2 and RN4 (1K), RN3 (22R); R1, R2 (1M); capacitors C1, C2, C4-C7, C10 (100n), C3, C8 (1u), C9, C11 (22p); varistors Z1, Z2; ferrite bead L1; inductor L2 (10 uH); diodes D2, D3; LEDs ON (green), L, RX, TX (yellow). Ours: flux, tweezers and hot air or a fine iron, checked under a loupe.

Bahan untuk langkah ini:

Tatasusunan perintang cipTatasusunan perintang cip4 RN1-RN4
Perintang cipPerintang cip2 1M
Kapasitor seramik cipKapasitor seramik cip11 7x100n, 2x1u, 2x22p
Varistor cipVaristor cip2 Z1, Z2
Manik feritManik ferit1 L1
Induktor lekap permukaanInduktor lekap permukaan1 L2
Diod lekap permukaanDiod lekap permukaan2 D2, D3
LED cipLED cip4 1 green, 3 yellow
Dawai PateriDawai Pateri1 a little

Alatan diperlukan:

FluksFluks
Penyepit berhujung tirusPenyepit berhujung tirus
Stesen kerja semula udara panasStesen kerja semula udara panas
Alat pematerianAlat pematerian
Kanta Pembesar Tukang EmasKanta Pembesar Tukang Emas
3

Fit the power and chip parts

Solder the ATmega16U2 (U3), the 16 MHz resonator Y2 and crystal Y1, the 5 V regulator NCP1117 (U1) and 3.3 V regulator LP2985 (U2), the LMV358 op-amp (U5), the FDN340P transistor (T1), the M7 diode (D1), the 500 mA resettable fuse (F1) and the 47 uF capacitors PC1, PC2 with their polarity as marked.

Bahan untuk langkah ini:

Pengawal mikro ATmega16U2Pengawal mikro ATmega16U21 U3
Resonator seramik piezoelektrikResonator seramik piezoelektrik1 Y2
Kristal kuarzaKristal kuarza1 Y1
Pengatur voltan linearPengatur voltan linear2 U1 5 V, U2 3.3 V
IC penguat kendalianIC penguat kendalian1 U5 LMV358
MOSFET saluran-PMOSFET saluran-P1 T1
Diod lekap permukaanDiod lekap permukaan1 D1 M7
Fius boleh set semulaFius boleh set semula1 F1
Kapasitor cip berkutubKapasitor cip berkutub2 PC1, PC2
Dawai PateriDawai Pateri1 a little

Alatan diperlukan:

FluksFluks
Penyepit berhujung tirusPenyepit berhujung tirus
Stesen kerja semula udara panasStesen kerja semula udara panas
Alat pematerianAlat pematerian
Kanta Pembesar Tukang EmasKanta Pembesar Tukang Emas
4

Fit the through-hole parts

Solder the USB-B socket (X2), the DC jack (X1), the reset switch, the female headers (one 10-way, two 8-way, one 6-way) and the two 2x3 ICSP headers. Seat the ATmega328P in its place (ZU4).

Bahan untuk langkah ini:

Soket USB-BSoket USB-B1 X2
Soket kuasa tongSoket kuasa tong1 X1
Butang tekanButang tekan1 RESET
Pin pengepalaPin pengepala6 10x1, 2x 8x1, 6x1 female; 2x 3x2 ICSP
Pengawal mikro ATmega328PPengawal mikro ATmega328P1 ZU4
Dawai PateriDawai Pateri1 as needed

Alatan diperlukan:

Alat pematerianAlat pematerian
5

Flash and check

Check with a meter that 5 V and GND are not shorted. Through the ICSP headers, load the USB-to-serial firmware into the ATmega16U2 and the bootloader into the ATmega328P. Plug in USB: the green ON LED lights, and the blink test in the next step flashes the L LED. Ours: an AVR ISP programmer and a multimeter.

Bahan untuk langkah ini:

Perisian tegar Arduino UnoPerisian tegar Arduino Uno1 download

Alatan diperlukan:

MultimeterMultimeter
Pengatur cara AVR ISPPengatur cara AVR ISP
Kabel USB-BKabel USB-B
6

The blink test

blink_test.ino: the same check as Arduino's Blink example. Upload it over USB from the Arduino IDE with the board set to Arduino Uno; the L LED on pin 13 turns on for one second and off for one second, over and over. If it does, both processors, the USB link and the bootloader work.
blink_test.inocpp
// blink_test.ino - first check of a newly built Arduino Uno R3.
// The L LED is on digital pin 13 (LED_BUILTIN on the Uno).
void setup() {
  pinMode(LED_BUILTIN, OUTPUT);
}

void loop() {
  digitalWrite(LED_BUILTIN, HIGH);  // L on
  delay(1000);
  digitalWrite(LED_BUILTIN, LOW);   // L off
  delay(1000);
}

Alatan diperlukan:

Kabel USB-BKabel USB-B

Bahan

24

Alatan Diperlukan

8

CC0 Domain Awam

Blueprint ini dikeluarkan di bawah CC0. Anda bebas menyalin, mengubah, mengedar, dan menggunakan karya ini untuk sebarang tujuan, tanpa meminta kebenaran.

Sokong Pembuat dengan membeli produk melalui Blueprint mereka di mana mereka memperoleh Komisen Pembuat ditetapkan oleh Penjual, atau cipta iterasi baru Blueprint ini dan sertakan ia sebagai sambungan dalam Blueprint anda sendiri untuk berkongsi hasil.

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