HardLabs

SFP-Flasher

nxzz·SFP-Flasher·pcb/hid-sfp-flasher.kicad_pcb

SFP-Flasher PCB layout, top view — open source RP2040/RP2350 board by nxzz

About the SFP-Flasher PCB

SFP-Flasher is an open source RP2040/RP2350 PCB design by nxzz, published on GitHub. It is a 4-layer board measuring 45 × 40 mm, with 41 components from 23 distinct parts.

Its main chip is the RP2040, from the RP2040/RP2350 family. Other key parts include the W25Q16JVUXIQ, TLV62569DBV and QSFP28 38PIN 49091-01M311. By type, the board carries 17 capacitors, 12 resistors, 4 ICs, 2 switches, 1 crystal and 1 connector.

From the project

WebHIDで使えるSFP書き換えツール群

ブラウザ（WebHID）から RP2040(Pico) I2C ゲートウェイ経由で SFP モジュールの EEPROM を読み書きするツール一式。 ダンプ／解析、クローン書込（実シリアル番号を維持）、DWDM 波長設定をブラウザだけで行えます。

64 バイト固定の HID IN/OUT レポートでコマンドをやり取りする汎用 I2C ゲートウェイです。 2 系統の I2C バスに対応します（bus0 = SDA/SCL = IO12/IO13、bus1 = IO26/IO27）。

- READ は 1 回最大 61 バイト、WRITE は 1 回最大 58 バイト。 - WRITE は 8 バイトページ境界を跨がないよう Web アプリ側で自動分割します（24Cxx 系 EEPROM 対策）。

PlatformIO を使用します（arduino-pico / Earle Philhower コア、USB スタックは Adafruit TinyUSB）。

Main components on the SFP-Flasher

RP2040W25Q16JVUXIQTLV62569DBVQSFP28 38PIN 49091-01M311

SFP-Flasher bill of materials (BOM)

41 components, 23 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
RP2040
U1
1
W25Q16JVUXIQ
U2
1
TLV62569DBV
U3
1
QSFP28 38PIN 49091-01M311
CND-tek(磁联达)
U4
1
SMD-3225_4P12M20PF10PPM
X1
1
C42418480
SFP+
J1
1
SMD0805B050TF
F1
1
C470427
USB_BOOT
SW1
1
C470427
RESET
SW2
1
HC-TYPE-C-16P-01A-O
USB1
1
PSRV05-4MR6T1G
D1
1
C431273
2.2u 3A
L1
2
30PF
30pF
C1, C2
11
0.1U
0.1u
C3, C6, C7, C10, C11, C12, C13, C14 +3
1
4.7U
4.7u
C4
1
10U
10u
C5
2
1u
C8, C9
2
5.1K
5.1k
R1, R2
2
33
R3, R4
1
68K
68k
R5
Show 3 more
QtyPartRefs
1
15K
15k
R6
2
1k
R7, R8
4
10K
10k
R17, R18, R19, R20

SFP-Flasher design files

The KiCad project lives in the nxzz/SFP-Flasher repository on GitHub; these links point at the commit this page was built from.

SFP-Flasher: common questions

What microcontroller does the SFP-Flasher use?

The SFP-Flasher is built around the RP2040, from the RP2040/RP2350 family.

How big is the SFP-Flasher PCB?

The SFP-Flasher measures 45 × 40 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the SFP-Flasher?

41 components, from 23 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the SFP-Flasher design files?

From the nxzz/SFP-Flasher repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the SFP-Flasher design in my own project?

The repository has no license, so all rights stay with nxzz. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the SFP-Flasher without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug RP2040/RP2350 firmware against it before you order a PCB.

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