open-source

OLIA digital lock-in amplifier

A complete USB-controlled instrument for extracting weak periodic signals from noise.

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License: MIT (explicitly includes hardware)
Source revision: Release 1.0 / OLIA V1
Last mirror: Sep 10, 2026
Git commit: 65ea0fdd2e16

About OLIA digital lock-in amplifier

A complete USB-controlled instrument for extracting weak periodic signals from noise. Original two-layer design for adaptation to ViaGrid; rerouting and testing are required.

Published design files

Development & tools · two copper layers
Open source (MIT (explicitly includes hardware)) · Original hardware by Andrew J. Harvie; published with John C. de Mello. Retain the MIT copyright and permission notice.
Mirrored at 65ea0fdd2e16

Canonical source stays in the upstream git repository (and in WalGit after a successful mirror push). Generated renders and 3D models use artifacts/viagrid/olia-lock-in-amplifier/65ea0fdd2e160f14701410065be847ea58445ddc/daa500983295eb59 on the artifact CDN and are not checked into git.