40 Piece Wooden Brain Teaser Puzzle, Solve by Fitting All Pieces Into Frame or Use Creativity to Design Artwork, Montessori Tangram Educational Toy 2 connections for 5V 'hobby'

2 connections for 5V 'hobby' servos connected to the Arduino's high-resolution dedicated timer - no jitter

This ball may be used over and over again with a wet erase marker

they are also ideal for storing chemistry and laboratory chemicals

this battery-free working model is a to scale version of today's laboratory vehicles running on renewable and zero emissions hydrogen fuel

Rigol OCXO-A08 High Stable OCXO Reference Clock Options for DSG3000 Signal Generators

40 Piece Wooden Brain Teaser Puzzle, Solve by Fitting All Pieces Into Frame or Use Creativity to Design Artwork, Montessori Tangram Educational Toy 2 connections for 5V 'hobby'This unique wooden puzzle features 40 pieces that can be arranged to fit perfectly inside the frame. You can also let your imagination run free and arrange the pieces to form shapes or designs inside or outside the frame! Replayable each time you attempt the puzzle it can be solved a different way. The number of designs that you can create is almost endless! An instruction sheet is included that has solutions to the puzzle along with some design ideas