Probe
About the Probe PCB
Probe is an open source PCB design by festlv, published on GitHub under the MIT license. It is a 2-layer board measuring 38.8 × 48.3 mm, with 30 components from 13 distinct parts.
Other key parts include the SN74AXC8T245PWR, DS90LV047ATMX/NOPB and MIC5205-3.3YM5-TR. By type, the board carries 15 resistors, 7 capacitors, 4 ICs, 2 connectors and 2 diodes.
It belongs with the test & measurement designs in this gallery.
From the project
Cheap logic probe for Rigol MSO5000-series oscilloscopes
This project aims to be a somewhat lower performance but significantly cheaper alternative to Rigol's PLA2216 logic analyzer probe for MSO5000-series oscilloscopes.
The project is based on the design published by Gandalf_Sr on EEVBlog forum, with the most notable difference being that it should allow input signal threshold selection from the oscilloscope.
connector-pcb which plugs into oscilloscope, 2x probe-pcb's which connect to the aforementioned PCB via 24-pin IDC cables.
Main components on the Probe
Probe bill of materials (BOM)
30 components, 13 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | SN74AXC8T245PWR SN74AXC8T245 TI | TSSOP-24_4.4x7.8mm_P0.65mm | U1 |
| 2 | DS90LV047ATMX/NOPB DS90LV047A TI | SOIC-16_3.9x9.9mm_P1.27mm | U2, U4 |
| 1 | MIC5205-3.3YM5-TR MIC5205-3.3YM5 Microchip | SOT-23-5 | U3 |
| 1 | B-3000S16P-0110 IDC_HEADER_02x08 Ckmtw(Shenzhen Cankemeng) | IDC-Header_2x08_P2.54mm_Vertical | J1 |
| 1 | B-3000S24P-0110 IDC_HEADER_2x12 Ckmtw(Shenzhen Cankemeng) | IDC-Header_2x12_P2.54mm_Vertical | J2 |
| 1 | MM3Z3V9 3.9V 5% Fosan | D_SOD-323 | D1 |
| 1 | XL-1608SYGC-06 LED_GRN XINGLIGHT | LED_0603_1608Metric | D2 |
| 4 | CL10B104KB8NNNC 0.1uF Samsung Electro-Mechanics | C_0603_1608Metric | C1, C2, C6, C7 |
| 1 | CC0603KRX7R9BB471 470pF YAGEO | C_0603_1608Metric | C3 |
| 2 | CL10A225KP8NNNC 2.2uF Samsung Electro-Mechanics | C_0603_1608Metric | C4, C5 |
| 6 | RC0603JR-070RL 0R YAGEO | R_0603_1608Metric | R1, R10, R11, R12, R13, R14 |
| 8 | RC0603FR-07100RL 100R YAGEO | R_0603_1608Metric | R2, R3, R4, R5, R6, R7, R8, R9 |
| 1 | RC0603FR-071KL 1K YAGEO | R_0603_1608Metric | R15 |
Probe design files
The KiCad project lives in the festlv/mso5000-logic-probe repository on GitHub; these links point at the commit this page was built from.
Probe: common questions
How big is the Probe PCB?
The Probe measures 38.8 × 48.3 mm, has 2 copper layers and is 0.8 mm thick.
How many components are on the Probe?
30 components, from 13 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 Probe design files?
From the festlv/mso5000-logic-probe 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 Probe design in my own project?
Yes, under the terms of its MIT license, which festlv chose for the repository.
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