Free reference sheets
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Three printable references, free to keep. The cards are A7 (74 × 105 mm) — a standard laminating size — so they fit a field-bag pocket and an off-the-shelf pouch; each is two pages for duplex printing. Everything on them is also readable on this site, so you never need the PDF to get the content.
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The 60-second pre-flight
A7 card · 2 pages, front and back
7 checks before you arm, and the 6 no-arm OSD flags on the back with what each one actually means.
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The crash debrief
A7 card · 2 pages, front and back
The 5 questions to ask after a crash, in order, and the control–awareness–recovery triangle on the back.
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ELRS bind sheet
A4 · 1 page
The whole bind procedure plus the 9-pattern receiver LED decoder and the book's AUX channel map. Pinned to ExpressLRS 4.1.x.
Lost the files? Nothing is gone. Every word on these cards is also on this site, free and without signing up for anything: the two cards on the field cards page, and the bind sheet on the ELRS guide. Bookmark those and you never need this page again.
Print them, do not trust them blindly. The two cards restate chapters 14 and 8, and the bind sheet restates chapter 3 — but neither a printed sheet nor a web page tracks a firmware release on its own. The cards carry no printed date. The linked guide is generated from the same source, so it will not contradict them — but agreeing with each other is not the same as being current, so check anything safety-critical against the vendor's own documentation. A checklist is not a substitute for understanding what each check is for — which is what the chapters are.