From 60a5a4060d62276e5eb05bb768fde7b62a4121be Mon Sep 17 00:00:00 2001
From: Blaise Thompson <blaise@untzag.com>
Date: Mon, 25 Jan 2021 14:41:28 -0600
Subject: tap-heatsink

---
 documentation/documentation.tex | 10 ++++++++++
 1 file changed, 10 insertions(+)

(limited to 'documentation/documentation.tex')

diff --git a/documentation/documentation.tex b/documentation/documentation.tex
index 8b64659..dceb6e5 100644
--- a/documentation/documentation.tex
+++ b/documentation/documentation.tex
@@ -90,6 +90,9 @@
 
 \subsection{Digital}
 
+TODO: document I2C connection choice.
+Consistent with Adafruit, Sparkfun, Seeed...
+
 \subsubsection{Driver}
 
 \includepdf[landscape=true]{"../digital-driver/driver.pdf"}
@@ -106,7 +109,14 @@ TODO: LED PCB part number
 
 TODO: heatsink part number
 
+\begin{figure}
+  \centering
+  \includegraphics[width=\textwidth/2]{"../pictures/tap-heatsink.jpg"}
+  \caption{Two of the innermost holes on the extruded heatsink must be 4-40 tapped.}
+\end{figure}
+
 Tap the heatsink.
+We used thread-forming tap: OSG 1400105300.
 
 TODO: heatsink compoud
 
-- 
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