diff --git a/docs/projects/03make.md b/docs/projects/03make.md
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--- a/docs/projects/03make.md
+++ b/docs/projects/03make.md
@@ -281,5 +281,9 @@ Follow the general advice in the 'Sewing Circuits' section to complete the Hedy
 
 
 # Tips for buying electronic components
+Unless you are buying a pre-packaged kit, buying electronic components can be a bit of a pain. It means scrolling through electronics websites, peering at item listings which often don't have photos and are a bit unclear. In the past I have:
 
+* Ordered entirely the wrong kind of IC for a Stitch Synth module because it had one additional letter in its name
+* Ordered 50 of a component instead of 5, because it wasn't clear that putting 'one' component in my shopping basket meant 'one set of 10'
 
+One thing that helps is to look at the datasheet of the thing you're trying to buy.