HM-11 Bluetooth V4.0 Transceiver BLE Module
TI CC2540 / CC2541 chip
$9.18 FREE
ZK-502T 50W*2 Bluetooth V5.0 Subwoofer Audio Amplifier Board Module w/ Tone
treble/bass adjustable / dual channel stereo output
$18.35 FREE
ZK-DP3A 15W USB Step Up Converter Power Supply Module
w/ LCD display
$10.68 FREE
DC 9-40V to DC 5V Step Down Buck Converter Power Supply Module
over 93% conversion rate / circuit protection
$9.09 FREE
ESP32-CAM Wifi / Bluetooth V4.2 Camera Module Development Board
supports up to 4GB microSD / 2dBi gain antanna / 802.11b/g/n
$9.05 FREE
AC-DC AC 85-265V to DC 12V 3A Power Supply Step Down Module
over temperature/over current / short circuit protection / w/ indicator
$8.77 FREE
DC 8-55V to DC 5V 3A Step Down Buck Converter Power Supply Module
over 93% conversion rate / circuit protection / dual USB female
$7.32 FREE
USB Host Shield for Arduino
authentic funduino board
$8.02 FREE
JY-MCU mini_RTCpro DS3231 Arduino Compatible Precision Clock Module w/ Temperature
AT24CXX 32K I2C EEPROM memory / for AVR PIC 51 ARM
 
(5)
$8.94 FREE
NRF24L01+ Enhanced 2.4GHz Wireless Transceiver Module (10-Pack)
10-PACK 2Mbps / 1.9-3.6V
$8.82 FREE
JY-MCU 8-Digit 7-Segment Numeric Display (Red) + 8 Push-button Keys + 8 Dual-Color LED Module
TM1638 display driver / chainable / JY-LKM1638
 
(4)
$7.27 FREE
JY-MCU HC-06 Bluetooth Wireless Serial Port Module
V1.07 / 3.3V level / Arduino compatible / 3.6-6V input / w/ 4P dupont line
$6.66 FREE