HardLabs

Original

ramtuc·rp2040-logic-analyzer·hardware/out/via-0p3/original.kicad_pcb

Original PCB layout, top view — open source RP2040/RP2350 board by ramtuc

About the Original PCB

Original is an open source RP2040/RP2350 PCB design by ramtuc, published on GitHub under the CERN-OHL-P-2.0 license. It is a 4-layer board measuring 65 × 45 mm, with 73 components from 22 distinct parts.

Its main chip is the RP2040, from the RP2040/RP2350 family. Other key parts include the W25Q128JVSIQ, TXU0104PWR, AMS1117-3.3 and USBLC6-2SC6. By type, the board carries 27 capacitors, 27 resistors, 8 ICs, 4 connectors, 3 switches and 3 diodes.

It belongs with the test & measurement designs in this gallery.

From the project

RP2040 + TXU0104 16ch logic analyzer board for PulseView (sigrok-pico), 4-layer, JLCPCB PCBA

RP2040 と TI の TXU0104（レベル変換 ×4）で作った、16ch のロジックアナライザ基板です。1.8V〜5V のロジックをそのまま受け、sigrok-pico のファームを書くと PulseView（sigrok）から I2C・SPI・UART をデコードできます。4 層・65 × 45mm で、部品実装は JLCPCB の PCBA に任せています。

- A0 基板の検証は第3回（実戦投入）で一区切りです。 第2回で立ち上げ（3.3V レール 3.303V・水晶 12MHz・RP2040 内蔵 LDO 1.096V・PulseView で I2C をデコード）、第3回でしきい値・サンプリング上限・時間窓を実測し、SPI／UART／サーボ PWM をデコードしました。第3回の実測値（A0・SW1 改修済み・picodig26.uf2）: - 1.8V ロジックは EXT で読めます。 VREF = 1.806V（EXT）で VT+ 1.399V／VT− 0.732V。雑音を抑えた入力で測り直した 3.3V 位置は VT+ 2.401V／VT− 1.395V、5V 位置は VT+ 3.290V／VT− 2.138V（0.05V 刻みの掃引）。VT+ は TXU0104 データシートの近い VCCA 行の上限より高めで、原因は未特定です -…

Original, from the project README
From the project README

Main components on the Original

RP2040W25Q128JVSIQTXU0104PWRAMS1117-3.3USBLC6-2SC6

Original bill of materials (BOM)

73 components, 22 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
RP2040
U1
1
W25Q128JVSIQ
U2
4
TXU0104PWR
U3, U4, U5, U6
1
AMS1117-3.3
U7
1
USBLC6-2SC6
U8
1
C20625731
ABM8-272-T3 12MHz
X1
1
TYPE-C-31-M-12
J1
1
PROBE 2x16
J2
1
VREF_EXT
J3
1
ADC 1x3 (DNF)
J4
1
SK13D07VG5
SW1
2
TS-1187A-B-A-B
SW2, SW3
3
C2286
LED RED
D1, D2, D3
20
100NF
100nF
C1, C2, C3, C4, C5, C6, C7, C8 +12
3
1µF
C21, C22, C27
2
15PF
15pF
C23, C24
2
10µF
C25, C26
16
100Ω
R1, R2, R3, R4, R5, R6, R7, R8 +8
2
5.1kΩ
R17, R18
2
27Ω
R19, R20
Show 2 more
QtyPartRefs
5
1kΩ
R21, R22, R25, R26, R27
2
10kΩ
R23, R24

Original design files

The KiCad project lives in the ramtuc/rp2040-logic-analyzer repository on GitHub; these links point at the commit this page was built from.

Original: common questions

What microcontroller does the Original use?

The Original is built around the RP2040, from the RP2040/RP2350 family.

How big is the Original PCB?

The Original measures 65 × 45 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the Original?

73 components, from 22 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 Original design files?

From the ramtuc/rp2040-logic-analyzer 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 Original design in my own project?

Yes, under the terms of its CERN-OHL-P-2.0 license, which ramtuc chose for the repository.

Can I test firmware for the Original 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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