HM-11 Bluetooth V4.0 Transceiver BLE Module
TI CC2540 / CC2541 chip
$3.75 FREE
3-Channel Line Tracking Sensor Module
red / Arduino compatible / 10mm detection range
 
(1)
$2.08 FREE
TI CC2540/CC2541 Bluetooth 4.0 BLE 2540 2541 Transparent Serial Data Module w/Antenna
3.3V TTL / bluetooth low energy / HM-10
 
(3)
$4.12 FREE
Nano 3.0 Atmel Atmega328P Mini-USB Board for Arduino
works w/ official Arduino boards
 
(10)
$2.68 FREE
Micro-USB 1A 18650 Lithium Battery Charging Board Charger Module
5V input / over-discharge / over-current protection
 
(26)
$0.88 FREE
Arduino Compatible IIC / I2C Serial 2.5" LCD 1602 Display Module
blue backlight / green board
 
(6)
$3.41 FREE
USB to TTL Serial Converter Adapter Module for Arduino
CP2102 chipset / w/ dupont cables
 
(1)
$2.53 FREE
0.28" 3-Digit LED Voltmeter Amperemeter Module
DC 0-100V measuring range / red LED light / fine tuning
$4.14 FREE
0.36" 3-Digit LED Voltmeter Module (3-Pack)
3-PACK DC 0-100V measuring range / green LED light
$3.95 FREE
MAX6675 Type K Thermocouple Temperature Sensor Module for Arduino
0'C-1024'C measuring range
 
(1)
$3.87 FREE