From 4eee81ea561ad5e874a6513a7708a4fc6401e8f8 Mon Sep 17 00:00:00 2001 From: alsocat <102409620+alsocat@users.noreply.github.com> Date: Tue, 1 Sep 2026 20:13:48 -0600 Subject: [PATCH] docs: add amazon search links for the board and sensor MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit #9 added links to two specific amazon listings. The board listing (B0BYSB66S5, Seeed Studio XIAO ESP32S3) is still live, but the sensor listing (B0CWTR6MND) now 404s, which is the failure mode individual listings have: sellers and listings for these parts come and go. Link to searches instead, covering both boards people actually build with — the XIAO and the ESP32-S3 SuperMini — plus the ZW101 sensor, and say why the links are searches. Each search was checked to return the right part in its first few results. Co-Authored-By: Claude Opus 5 --- README.md | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/README.md b/README.md index 2e28746e..2e8a22c6 100644 --- a/README.md +++ b/README.md @@ -224,12 +224,17 @@ when macos asks for the pin, touch the sensor. | part | used here | notes | | -- | -- | -- | -| microcontroller | seeed studio esp32-s3 | needs native usb and hardware uart. secure boot + flash encryption strongly recommended | -| fingerprint sensor | zw101-style uart sensor | uses the common `0xef01` packet protocol | +| microcontroller | seeed studio esp32-s3 | needs native usb and hardware uart. secure boot + flash encryption strongly recommended. search: [xiao esp32s3](https://www.amazon.com/s?k=seeed+studio+xiao+esp32s3) / [esp32-s3 supermini](https://www.amazon.com/s?k=esp32+s3+supermini) | +| fingerprint sensor | zw101-style uart sensor | uses the common `0xef01` packet protocol. search: [zw101 sensor](https://www.amazon.com/s?k=zw101+fingerprint+sensor) | | computer | macos | hid mode needs the helper. piv/pam mode needs macos smart card support | | case | printed top/bottom stl | `hardware/case/case_top.stl` and `hardware/case/case_bottom.stl` | | wiring/solder/etc | misc | whatever your build needs | +these are amazon search links rather than links to individual listings, because +sellers and listings for these parts come and go. check the specs on whatever you +buy: the board needs native usb and a hardware uart, and the sensor needs to speak +the `0xef01` uart protocol. + other esp32-s3 boards should work if the usb and uart pins are available. other fingerprint sensors may work if they speak the same uart protocol. other microcontroller families can work, but are not currently supported.