TTP223B Digital Touch Sensor Capacitive Touch Switch Module for Arduino from czb6721960 store on eBay $1.31 item #141264515074        

  HC-SR04 Ultrasonic Sensor Distance Measuring Module from czb6721960 shop on eBay $1.58 USD. item #140717531874        

  100 3mm Blue Lens LED from czb6721960 shop on eBay $2.82 USD. item #140935550658           Comparison of 5mm and 3mm Light Emitting Diodes.    

  100 5mm Blue Lens Thru Hole LEDs from czb6721960 shop on eBay for $3.30 USD. item #160992146984   Comparison of 5mm and 3mm Light Emitting Diodes.            

  I purchased these push button switches from czb6721960 shop on eBay.   50 blue and white 8mm x 8mm locking square buttons $2.63 item #160994703230           100 black 6mm x 6mm x 5mm 4-pin DIP push button switches $1.59 item #140942027356       And a view of the two switches side by side   […]

  Finding the right method for applying conductive paint to paper and fabrics is tricky business. The following tools are some of my favorite applicators for using CUPro conductive paint from LessEMF.   Stampendous Needle Nose Tip Bottles are about 50 cents USD and come in a variety of sizes and applicator tips.     The Find website is generally […]

  Light Emitting Diodes from Any Circuit’s store on ebay   200x Red LED 5×2.5mm Diffused, Red BR5379K DE2584 (310725335279) $3.96   These tombstone shaped LEDs have the positive lead as short and the negative lead as long. This is reversed from the standard markings and therefore makes this product difficult to teach with.   This LED can also be […]

  Jazz up your electronic traces with this conductive knit copper tube from Plug and Wear in Italy.   Flexible, solderable, and cuts with a standard scissor.  

  Push Button Switches from Adafruit. Add some color to your circuits!    

In 2014 I’ve purchased more 400 pin breadboards that I ever thought possible! Fortunately I’ve found an eBay seller that is reliable. CXB Electronics on ebay is the place to go for large quantities of 400 pin breadboards and jumper wires. Order early as it takes 3 -4 weeks to receive them.