SparkFun AVR 8 Pin 20MHz 8K 4A/D - ATtiny85 Microcontrollers Wire Piezo elements come in handy

Piezo elements come in handy when you need to detect vibration or a knock

If you need this cable and the mating connector

Note: The pictures for this item show only 10 jumpers but this is a pack of 100 female to female jumpers

Microswitch: max 3A @ 120 VAC

It transforms the TT850/TT860 into a wireless flash with remote power control

SparkFun AVR 8 Pin 20MHz 8K 4A/D - ATtiny85 Microcontrollers Wire Piezo elements come in handyAtmels itty bitty ATtiny85 8 Bit Processor. 8K of program space, 6 I O lines, and 4 channel 10 bit ADC. Runs up to 20MHz with external crystal. Package can be programmed in circuit. Documents: Product Card Arduino Quick Reference