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New KY 008 Laser Transmitter Module for arduino AVR PIC Free Shipping.jpg

New KY-008 Laser Transmitter Module for arduino AVR PIC Free Shipping


$0.42
Free shipping
9988 in stock


Just a laser pointer. Contains all the current limiting driver components you need, so just supply it 5V and start burning people's eyes out (note: please don't do that.)
Free shipping LTC 3588 Energy Harvester Breakout LTC3588 1 module.jpg

Free shipping! LTC-3588 Energy Harvester Breakout - LTC3588-1 module


$11.00
Free shipping
995 in stock


Designed to take the brief high voltage spikes from impacts on piezo elements, to generate a smooth & regulated low voltage DC supply at 10-100mA. Designed to harvest power from vibration or any rapid changes of direction.
Hot Selling 1PC 5A Adjustable Power CC CV Step down Charge Module LED Driver Voltmeter Ammeter.jpg

Hot Selling 1PC 5A Adjustable Power CC/CV Step-down Charge Module LED Driver Voltmeter Ammeter Constant current constant voltage


$4.50
Free shipping
99995 in stock


These are great bang for buck, up to 5A of adjustable voltage, adjustable current power supply, with built-in voltage and current meter. These are actually smaller than I initially expected, and although the trimpots are a little annoying to use, I cant fault this unit for features or price.
1pcs Smart Electronics GPRS module GSM module A6 SMS Speech board wireless data transmission adapter plate.jpg

1pcs Smart Electronics GPRS module GSM module A6 \ SMS \ Speech \ board \ wireless data transmission adapter plate


$4.07
+ $0.32 shipping
9997 in stock


These use the 2G mobile network, which will be shutdown in coming years in most countries, which has dropped the price of these modules like a stone. In most areas you still have at least several years of working time, possibly more, so a great cheap way to add mobile communications to your projects.
Free shipping GY Digispark kickstarter miniature minimal development board ATTINY85 module for Arduino usb.jpg

Free shipping! GY Digispark kickstarter miniature minimal development board ATTINY85 module for Arduino usb


$1.30
Free shipping
974 in stock


Another of the ATTiny85 DigiSpark boards. These use *SOFTWARE* based USB, but do a surprisingly good job of that.