easyISO galvanically isolates a Qwiic / STEMMA QT I²C link — data and power — so a body-connected sensor never shares a ground with a mains-powered computer.
- I²C isolator: TI ISO1640 (8-pin SOIC), bidirectional SDA/SCL, hot-swappable, up to 1.7 MHz
- Isolated power: MPS MIE1W0505BGLVH isolated DC-DC module, 3.3 V out (about 75 mA)
- Connectors: one Qwiic port and one 0.1" 4-pin header (SCL, SDA, VCC, GND) on each side
- Pull-ups: 10 kΩ on SDA and SCL, on both sides
- Board: 33 × 18.7 mm, 2-layer, 4 × M2 mounting holes
The voltage ratings above are the manufacturers' component ratings. easyISO is a development tool, not a certified medical isolation barrier.
- /hardware — KiCad project (
easyISO.kicad_pro,.kicad_sch,.kicad_pcb) and the schematic PDF (pc_easyiso_v1_schematic.pdf)
| Revision | Date | Notes |
|---|---|---|
| v1 | 2026-08 | First release |
All hardware is released under the CERN-OHL-P v2 license.
This source describes Open Hardware and is licensed under the CERN-OHL-P v2.
You may redistribute and modify this documentation and make products using it under the terms of the CERN-OHL-P v2 (https://cern.ch/cern-ohl). This documentation is distributed WITHOUT ANY EXPRESS OR IMPLIED WARRANTY, INCLUDING OF MERCHANTABILITY, SATISFACTORY QUALITY AND FITNESS FOR A PARTICULAR PURPOSE. Please see the CERN-OHL-P v2 for applicable conditions.
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