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When writing on the board, look at what you're writing. When talking about something on the board, point at it and look at it.
When you aren't writing or pointing, look at the camera. It may be helpful to seat someone under the camera.
Leave yourself a window. Or at least try not to draw horizontal lines through your eyes or mouth.
When pointing, try to point from the side, not from the back, so your fingers stand out against the black background.
Don't hold the marker when you're gesturing or pointing. Put it down, or hold it in your other hand.
Put the marker caps somewhere else altogether. The markers will be ok without their caps for the duration of a video.
Dry-erase and wet-erase markers squeak. To reduce squeak, use fresh markers and don't push so hard against the glass. With a light touch, you can mostly avoid squeak.
Liquid chalk markers don't squeak, but they need more care to keep the tip fully saturated.
Markers are slow to erase. To avoid smearing erase with a dry cloth first, and then remove any residue with glass cleaner.
Adding Powerpoint
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The five minute rule still applies!
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Slides and / or Graphics
We can use software to add pre-made slides or graphics to your lightboard presentation. While recording you’ll be able to see where the slide content / graphics are, so you can point to them, draw or write on them, etc.
Set the background of your slides and graphics to black. Anything that is black, will be transparent in the final lightboard presentation, and will allow you to draw or write in that black area.
If you want to write or draw on your slide or graphic, you’ll need plenty of black space within it. For this reason, images composed of non-black outlines work great.
Set the page aspect ratio to 16x9 before you start. Powerpoint is not good with page layout changes later; it will stretch your slide content. Here's a template Powerpoint deck.
Leave space for you. You become a character inside your Powerpoint slide. (You can also put all your content in a traditional corner inset, but that's way less cool.)
Try something other than the usual "bulletpoint talk". How about adding hand-written items interspersed with just a few Powerpoint bullets. Hand-written check marks. Or cartoon sketches but no text.
You can use a second monitor for notes, or even as a teleprompter.
You can make secret dots in dry-erase black, on the glass, using your Powerpoint in advance. Then you can point straight at those, which is much slicker than the "weatherman wave".
You can run a movie in Powerpoint, and even point to things in a movie as it runs.
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Steve Griffith's youtube page with tons of use of the board: https://www.youtube.com/c/SteveGriffithsvideo/videos
Tips on using PowerPoint slides or graphics with the lightboard