From e7c15754f5843002804e36dc35b75f6f04bb6849 Mon Sep 17 00:00:00 2001
From: Yoyo Yuan <yoyoyuan1729@gmail.com>
Date: Wed, 5 Aug 2026 19:27:51 -0400
Subject: [PATCH 1/2] docs: add OpenFNIRS component request

---
 .../openfnirs/component-request.md             | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)
 create mode 100644 assets/hardware-builds/openfnirs/component-request.md

diff --git a/assets/hardware-builds/openfnirs/component-request.md b/assets/hardware-builds/openfnirs/component-request.md
new file mode 100644
index 0000000..815ff82
--- /dev/null
+++ b/assets/hardware-builds/openfnirs/component-request.md
@@ -0,0 +1,18 @@
+# OpenFNIRS Component Request
+
+To support cloning the paper's OpenFNIRS system, I am requesting:
+
+1. **One assembled sensor module, preferably tested**, including:
+   - Soldered 660 nm and 940 nm LEDs
+   - Photodiode
+   - Op-amp
+   - MOSFETs
+   - Resistors and capacitors
+   - Connectors
+
+2. **One ST-LINK programming unit**, including:
+   - USB cable
+   - Ribbon cable
+   - Smaller adapter leads
+
+Any additional funding of approximately **$500** would also be helpful for completing the clone.

From ede1f5effbc9e3574dcac702d1a63cd239ec1633 Mon Sep 17 00:00:00 2001
From: Yoyo Yuan <yoyoyuan1729@gmail.com>
Date: Fri, 7 Aug 2026 21:42:29 -0700
Subject: [PATCH 2/2] fix: render OpenFNIRS component request

---
 .../openfnirs/component-request.md            | 18 -----------
 trees/dev-opennirscap.tree                    |  2 ++
 trees/req-openfnirs-components.tree           | 30 +++++++++++++++++++
 3 files changed, 32 insertions(+), 18 deletions(-)
 delete mode 100644 assets/hardware-builds/openfnirs/component-request.md
 create mode 100644 trees/req-openfnirs-components.tree

diff --git a/assets/hardware-builds/openfnirs/component-request.md b/assets/hardware-builds/openfnirs/component-request.md
deleted file mode 100644
index 815ff82..0000000
--- a/assets/hardware-builds/openfnirs/component-request.md
+++ /dev/null
@@ -1,18 +0,0 @@
-# OpenFNIRS Component Request
-
-To support cloning the paper's OpenFNIRS system, I am requesting:
-
-1. **One assembled sensor module, preferably tested**, including:
-   - Soldered 660 nm and 940 nm LEDs
-   - Photodiode
-   - Op-amp
-   - MOSFETs
-   - Resistors and capacitors
-   - Connectors
-
-2. **One ST-LINK programming unit**, including:
-   - USB cable
-   - Ribbon cable
-   - Smaller adapter leads
-
-Any additional funding of approximately **$500** would also be helpful for completing the clone.
diff --git a/trees/dev-opennirscap.tree b/trees/dev-opennirscap.tree
index ed8e14a..8cf3843 100644
--- a/trees/dev-opennirscap.tree
+++ b/trees/dev-opennirscap.tree
@@ -7,3 +7,5 @@
 \meta{status}{building}
 \meta{location}{222 Dore}
 \p{Status: \strong{building}. Partial build, blockers open (see [[openfnirs-build]]). Device: [[bcf-0036]]; build record: [[openfnirs-build]].}
+
+\transclude{req-openfnirs-components}
diff --git a/trees/req-openfnirs-components.tree b/trees/req-openfnirs-components.tree
new file mode 100644
index 0000000..f0534ef
--- /dev/null
+++ b/trees/req-openfnirs-components.tree
@@ -0,0 +1,30 @@
+\title{OpenFNIRS component loan request}
+\taxon{reference}
+\author{exanova-y}
+\date{2026-08-07}
+\import{macros}
+\tag{openfnirs}
+\tag{hardware}
+
+\p{In support of cloning a second OpenNIRSCap system, I am requesting to borrow:}
+
+\ul{
+  \li{One assembled sensor module, preferably tested — 660 nm and 940 nm LEDs, photodiode, op-amp, MOSFETs, passives, connectors}
+  \li{One ST-LINK programming unit — USB cable, ribbon cable, adapter leads}
+  \li{The partially populated OpenNIRScap ECU: the green fNIRS ECU marked SENSOR GROUP 1–8, with STM32L476RET6 control, sensor-group headers, multiplexers, USB, power, and SWD interfaces.}
+}
+
+\p{Approximately $500 of additional funding would complete the clone. These materials are found in [[openfnirs-build]] bill of work. The loaned hardware will be used as the bring-up reference for the additional sensor modules and returned after interface, programming, and channel checks. The hardware would be loaned for a 2-week initial period}
+
+\p{Rough order of steps towards extending a secondary fNIRS device with assist:}
+
+\ol{
+\li{order ~3 sensor groups, consisting of 9 detectors and 3 dual-wavelength emitters}
+\li{Open SensorModule.PrjPcb, generate BOM}
+\li{Order three populated boards from JLCPCB}
+\li{make sure for borrowed stack is working}
+\li{assemble >=1 working sensor module}
+\li{A/B test against borrowed sensor module}
+\li{assemble sensor modules with the ECU}
+\li{gradually expand towards the entire OpenNIRSCap setup during early fall 2026}
+}