HM-13 Dual Mode Bluetooth 4.0 BLE SPP LE Serial Port Module
compatible w/ Bluetooth 3.0/2.1
$6.10 FREE
Waveshare 0.95" RGB OLED Display Module
SSD1331 driver chip / SPI interfaces / 160 degree visible angle / 96*64 physical resolution / 65K color
$14.44 FREE
4-Channel IIC I2C Logic Level Converter Bi-Directional Module (2-Pack)
2-PACK 3.3V to 5V
 
(3)
$1.39 FREE
KEYES Beginner Learning Kit for BBC Micro:Bit
STEM education programming kit for children
$32.73 FREE
Bluetooth V4.2 MP3/MP4/MP5 Decoder Video Audio Decoding Board
remote control / supports U-disk, HDD & up to 32GB SD
$28.68 FREE
DSO150 15001K DIY Digital Oscilloscope Housing Kit
2.4" TFT / 0-200KHz / DC 9V
 
(3)
$27.88 FREE
5-36V to 1.25-32V DC-DC Buck Converter Step Down Module
w/ shell case / max. output current: 5A
 
(2)
$6.87 FREE
1000KV Pulse Arc High Voltage Generator Module
w/ ignition coil
$3.31 FREE
Digital Transistor Tester Capacitance ESR Diode Triode MOS/PNP Meter
3.5" colorful TFT screen / one-key operation / auto power off / USB rechargeable / indicator light
$18.91 FREE
0.28" 3-Digit LED Voltmeter Module (3-Pack)
3-PACK DC 2.4-30V / blue LED light
 
(3)
$4.46 FREE
KEYES LGT8F328P Development Control Board for Arduino
80mA total output / USB powered / 27*digit interfaces / 16MHz working frequency
$3.98 FREE
HC-05 Wireless Bluetooth Serial Transceiver Module
bluetooth V2.0
$4.35 FREE