Auto Adjustable FM Digital Radio DIY Kit With Power Amplifier Broadcast Receiving Kit -2021.    Parameters:  PCB board size: 6.3cm * 4.4cm;  Shell size: 11.9cm * 8.8cm * 2.7cm;  Support horn: within 8 Ω 5W;  Output power: 5W;  Frequency response range: 50Hz-18KHz;  Channel: the speaker is used as mono channel, and the headset is used as dual channel;  Ordinary 3.5mm diameter stereo headphones can be used, but if you buy one with shell, please note: the diameter of headphone handle must be less than 7mm! Otherwise you can't plug it in.  Receiving frequency adjustment range:Turn off radio 87.0mhz-108.0mhz and turn on radio 76.0mhz-108.0mhz;  Equivalent noise: ≥ 30dB;  Power supply voltage: 3.0v-5.0v;  Battery model: 18650 (Not included);  Package battery capacity: 1000mah (Not included);    Package included:  1 x FM Digital Radio DIY Kit

Description:  1. Input: Micro USB 5V;  2. Using STM8S005 as the main control, built-in procedures, welding light pipe can be used directly.  3. Support seven clock color display (containing RGB lamp).  4. The use of imported high-precision clock chip, a year less than 1...

Description:  It is DIY kit, need assemble to work.  Design reference from Beyerdynamic A1 headphone amplifier circuit, can drive 25-600 Ohm headphone.  Recommend voltage: Dual AC 12V-18V power 20-30W enough.    Assemble tips:  1. Must check all element, not be in the wrong location,...

Descriptions:  Note:This is DIY Kits, you need do it yourself!  Transformer Recommended Voltage: DC12-18V, the battery can also be, positive and negative automatic identification, do not worry reversed. Many of our family router power idle most of them can be used, the current size...

Feature:  Power supply: DC5V;  Circuit board material: FR-4 glass fiber board;  Dimensions: 78mm in diameter;  Made with 28 bright 10mm full-color RGB opalescent LEDs.  PCB board: round 10cm*10cm;  Display mode: 23 display modes.  Support power off memory function, automatically switch to the last display...

Feature:  Input voltage: DC 5V;  Operating current: 220mA maximum;  Fluorescent tube model: IV-18 (ИB-18 1984-1992 manufactured by the former Soviet Union);  Dimensions: 200mm x 52mm x 64mm (L x W x H) fluorescent tube length 115mm diameter 18mm;  Working temp: 0°C - 60°C;  Net...

Main Features:  1. Infrared induction, no need to touch switch.  2. Avoid cross infection.  3.10cm sensing distance to avoid misoperation.  4. Steel protective glass panel, anti-scratch, easy to scrub.     Main Specificaton:  Input Voltage: 90-250V 50/60Hz;  Wiring: Live wire and Neutral wire;  Max. Load...

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...