Although it is pre-flashed I still suggest you follow instructions to reflash the newest software once. Because software keeps updating all the time. This product does not include 18650 battery. Hardware has RTC inside but time function is not avaliable in the exist software....

Description:  The Due is a microcontroller board based on the SAM3X8E ARM Cortex-M3 CPU (datasheet). It is the first board based on a 32-bit ARM core microcontroller. It has 54 digital input / output pins (of which 12 can be used as PWM outputs),...

DIY Electronic Hourglass Kit Soldering Practice Spare Parts Module -2021.    Feature:  Working voltage: DC3.3-5V or 3*AA battery;  Speed: Adjustable;  PCB size: 74.4 x 43.7 x 24mm;  Color: Red LED;    Package includes:  1 x DIY Electronic Hourglass Kit.    Finish assembly, for reference...

DIY Metal Detector Kit Electronic DIY Soldering Practice Board -2021.    Feature:  Working voltage: DC3-5V;  Standby current: ≤ 5mA;  Working current: ≤40mA;  Measure depth: ≤ 60 mm;  Measure alarm mode: sound, light;  PCB size: 86 x 61mm;    Package includes:  1 x DIY Metal Detector Kit

FM Stereo Transmitter Module MP3 Recorder DIY Radio Station Kit -2021.    Feature:  Kit use: private radio, car audio transmitter, cable audio to wireless;  Operating voltage: DC4-6V;  Operating current: 20mA-40mA;  Launch distance: 20-80 meters barrier (affected by production level);  Transmit frequency: 87-108MHz, 14 frequency,...

Feature:   Model: STM32F103C8T6.  Kernel: ARM32 bit Cortex™-M3CPU.  Size: 22.86mm x 53.34mm .  Debug Mode: SWD.    MCU Introduction:   1. The maximum operating frequency of 72MHz.  2. Single-cycle multiply and hardware divide.  3. 64k Flash program memory.  4. 20k bytes SRAM.  5. 2.0-3.6V...

Specifications:  A single module can drive a 8x8 dot matrix common cathode.  Working voltage: 5V.  Module size: 12.8 x 3.2 x 1.3 cm (L*W*H).  With 64 fixing screw holes, hole diameter: 3mm.  Module with input and output interfaces, support for cascading multiple modules.    ...

Description:  Measuring range: automatic detection of PNP and NPN bipolar transistors, N and P channel MOSFETs, JFET field effect tubes, diodes, double diodes, SCRs, resistance, capacitance, and inductance.     Features:  1. One-key measurement operation, power off automatically after delay. The shutdown current is only...

Feature: Range: 100kg, 200kg, 300kg, 500kg, 1T, 2T, 3T (optional). Overall accuracy: 0.03% F S. Sensitivity: 2, 0.1 mV / V. Creep: 0.05% FS/30min. Nonlinear: 0.03% F S. Hysteresis error: 0.03% FS. Repeatability error: 0.02% F S. Zero temperature coefficient: 0.03% F S/10. Output...

Display Parameter:  Power supply voltage: +5 v.  Support the I2C.  With the Blue backlight, and contrast to adjust potentiometer.  Four line output more simpler.     Shell Description:  Screen size: 2.5 inches.  Material: Acrylic.  Color: Transparent.     Package included:  1 x LCD Display Module 1 x Transparent Shell...

Description:  Hat PIR is an compatible human body induction sensor, it belongs to 'Passive pyroelectric infrared meter', that detect the infrared come from the human body. When the infrared is detected, the sensor will output HIGH and last for two seconds until the next detecting...

Introduction:  This is a OV2710-based USB camera module with 2 megapixels and an image resolution of up to 1920x1080.  Support UVC protocol, drive-free, ready to use.     Specification:  Image: 2 million.  Resolution: 1920x1080.  Photosensitive chip: OV2710.  DSP:  Automatic white balance.  Automatic exposure.  Automatic gain. ...

Feature:  Built-in MP3 music function. 3W amplifier + 3W speaker. Can insert TF memory card to play music. Can insert U disk to play music. Built-in MP3 music volume can be adjusted. Button control the previous song, the next song.  Bump patchwork, screw hole...

Features:  LCD display, can show the weight clearly.  Ideal DIY kit for electronics enthusiasts, easy to install.  Components can be well protected and the looks stylish.    Specification:  Working voltage: DC5V-2A;  Power seat model: DC005;  Maximum weighing: 3kg;  After assmble size: 119 x 100 x...

Feature:  Name: Battery Pack Capacity Repair Equalizer.  Size: 123*117*44mm.  Applicable: suitable for 3-20 strings of batteries.  Power supply voltage: 5V.  Product use: equalize battery pack voltage.  LiFePO4 battery pack.  Discharge equalization power supply: 2.5V (0.05V) Charge equalization voltage: 3.6V (0.05V).  Ternary lithium battery pack: ...

Feature:  Li-ion/Lifepo4/Lipo Capacitive Active Balancer Board Applicable battery type: NCM/LFP/LTO.  Product size: 125*91*16 mm.  Working range of single voltage: NCM/LFP:2.7-4.2V, LTO:1.8-4.2V.  Balanced method: The whole battery pack participates in the active balance of energy transfer at the same time.  Static working current(mA): 15mA.  Under...

Description:  If, like many scanner enthusiasts and ham operators, you are interested in listening in on all the excitement manifest in aeronautical communication, but lack the equipment to pursue your interest, then maybe the Aviation-Band Receiver described in this article is for you. The...

Description:  The suite,adopt a warning lamp circuit NE555 and CD4017 chip simulation to make blue LED and red LED flashing, respectively, according to the pulse adjusting RP1 flicker frequency can be adjusted. Working circuit voltage of DC9-12 v, suite does not contain the power...

Main Features: 1. Multiple specifications, up to 5 sets of parameters can be set, allowing you to switch welding material and directly call parameters, without re-setting. 2. Chinese LCD interface, intuitive operation, convenient. 3. The welding pulse is in the mode of the double...

Note:   When you receive this sensor, the surface is covered with a blue protective film. When you peel off the film, you can see the stainless steel case.     Working principle:  This sensor uses the principle of light scattering. That is, the illuminates the...