1pcs CJMCU CP2102 MICRO USB to UART TTL Module 6Pin Serial Converter UART STC Replace FT232 NEW for arduino
9893 in stock
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.)
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.
16 Channel 12-bit PWM/Servo Driver-I2C interface PCA9685 for arduino or Raspberry pi shield module servo shield
9958 in stock
Hot Selling 1PC 5A Adjustable Power CC/CV Step-down Charge Module LED Driver Voltmeter Ammeter Constant current constant voltage
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
+ $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.
9997 in stock
Free shipping! GY Digispark kickstarter miniature minimal development board ATTINY85 module for Arduino usb
974 in stock
Another of the ATTiny85 DigiSpark boards. These use *SOFTWARE* based USB, but do a surprisingly good job of that.