Description:  Circuit board size: 7.7CMX6.1CM;  Shell size: 8.4cm*7.6CM*5.5CM;  Working voltage: DC 5V (positive inside DC seat);  Frequency modulation range: 87MHZ-108MHZ;  FM button: press the button once to 0.1MHZ, long press the FM button to continuously add and subtract;  Weight: 265G;    Function: digital display...

Description:  DC 7V-24V Audio Input Switch Board Four-way Audio Source Switch Board Audio Signal Input Switch Board Switch Relay DIY Kit -2021.    Specification:  Voltage: DC 7V-24V, AC 6V-18V;  Function: Four groups of audio signals are connected at the same time, and one group...

Description:  Power supply voltage: AC220V;  Transformer: Dual 12V;  The red wire is connected to the power cord 220V, the blue wire is connected to the circuit board;  Output power: 3W*2;  Size: 140*76*85mm;  Weight: 750g;     Package included:  1 x 220V 2x3W Small Power Amplifier Audio...

Description:  DC Motor PID Learning Kit Encoder Position Control Speed Control PID Development Board -2021.    Package Included:  1 x Encoder Motor;  1 x Controller;  1 x Motor Bracket;  1 x Flange Coupling;  1 x XH2.54 Cable;  1 x OLED Display;  1 x MicroUSB...

Description: Diameter: 16mm; Ambient temperature: -50 ~ +70 C; Relative humidity: up to 98% at +40 C; Atmospheric pressure: up to 4,4 kpa; Vibration: vibration frequency 10 ~ 100Hz, acceleration 100m/s2; Impact: Frequency of 60 to 80 beats/min, acceleration of 250m/s2; Centrifugal: acceleration 250m/s2....

Features:  5-speed double pulse adjustable program.  Double current structure high current discharge.  Automotive power-grade batteries, with an astonishing 1 milliohm internal resistance.  Maximum discharge current: MAX650A, maximum power: 2700W.  High-grade shell: all aluminum alloy and the texture of the sandblasted shell is superb.  2.1A...

Description:  WT32-SC01 is a development board for visual touch screen.The board is equipped with self-developed GUI platform firmware and supports graphic drag-drop programming to help users complete the development of custom control platform.  The WT32- SC01 development board adopts ESP32-WROVER-B module, which is a...

Description:  1. Test the relay module: connect the relay module VCC to 5V, GND to ground, IN to GND, the relay jumps, and when IN is suspended, the relay recovers, so you can hear the relay "Kaka" sound repeatedly;  2. Test the soil moisture...

Description:  Circuit board is made of FR - 4 glass fiber, tough and durable plate.  Reasonable circuit layout design.  Use your creativity, diy your LED clock!  Voltage: 5V-12V.  PCB Size(Length x Height): 10cm x 5.2cm / 3.9" x 2".  Function: clock /alarm /countdown /stopwatch...

Feature:  1. Creative products, RF-Nano-Board: Upgraded nano board for , The main chip is ATMEGA328P-MU QFN32, the latest bootloader ( IDE 1.8.8) was burned down. It is fully compatible with the common nano board. RF-Nano-Board is PIN-PIN with Nano V3.0,and share the same codes. ...

Specifications: Tolerance: +/-5%. SLA Battery Voltage: 18V. Type of Solar Cell: Monocrystalline. Open Circuit Voltage(Voc): 18V. Maximum Ystem Voltage: 18V. Temperate Coefficient of Isc: (010+/- 0.01 ) %/°C. Temperate Coefficient of Voc: - (0.38 +/-0.01 ) %/°C. Temperate Coefficient of Power Voc: -0.47%/°C. Temperature...

Hardware Specifications:  Chipset: ESP32, dual-core MCU, PMU power management.  FLASH: QSPI flash 16MB.  SRAM: 520 kB SRAM / PSRAM 8MB.  Button: power key , IO36.     Extended function:    USB to TTL: CP2104 (update to CH9102F).  Modular interface: UART, SPI, SDIO, I2C, LED PWM...

UNO R3 Beginner Upgrade Starter Kits Geekcreit for Arduino - products that work with official Arduino boards -2021.    We will default sending carton package to replace the plastic box, but there may some stocks are still packaging with plastic box, please note about...

Feature:  Product name: Universal folding solar power bank.  Features: foldable expansion solar panel; twice the light absorption; three times the light absorption; four times the light absorption; waterproof function; strong light.  Solar power: =144*75(1.5W)=144*150(3W)=144*225(4.5W)=144*300(6W).  Input: 5V-2A.  Output: 5V-2.1A (Max).  Capacity: actual capacity 8000mAh.  Material:...

Specification:  Working voltage: DC 3-14V; Size: 17 x 17 x 1mm;    Package included:  10 x DIY simple red flashlight circuit kits

Featrures:  - Foldable storage design, external mesh bag can hold mobile phones and data cables, outdoor charging is more convenient.  - High light transmission, tough and anti-aging material, worry-free charging.  - Using the third-generation Sunpower solar panels imported from the United States, the photoelectric conversion rate...

Feature:  Main chip: STM32F103RBT6 (64pin) LQFP64;  Chip FLASH: 128K, Chip SRAM: 20K;  Human-computer interaction: 8 LEDs, 4 buttons, adjustable potentiometer, 2 four-position common anode digital tubes, 1 active buzzer;  Storage: External expansion 16Mbit SPI FLASH (W25Q16), External expansion EEPROM 24C02, the chip comes with...

Features:  1.Design For Laser Shows or Stage Lighting Effect. Simple design and good integrity.  2. High brightness and good stability.  3.One switch button. Flexible operation, lightly press to boot.  4.A compact rechargeable Li-on battery pack built on. Large battery capacity and long life.  5.With...

Description:  This is a test fixture dedicated to module testing. It is suitable for modules and boards without soldering pin headers.  Feature:  -Great to test OPEN-SMART I2C OLED, I2C ADXL345 Accelerometer and other 4pin modules. (1X4P only) -Number of Pins: 1X4P/1X3P(Optional).  -Pin pitch: 2.54mm. ...

Description:  DIY CD4017+ne555 Strobe Module Electronics Learning Kit -2021.    Specification:  Operating voltage: 12V;  Dashboard size: 5.4 * 3.1CM;  Light board size: 3.5 * 2.6CM;  Flashing Mode Strobe Kit:( flicker frequency is adjustable);  Flash 2 times left and right flash 2 times, all bright...