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  • MH-MX8 Wireless Bluetooth(BLT 4.2 ) MP3 Audio Receiver board

    0_1543656246844_f74a1562-4629-44fe-bdc7-f0cb6765c6d1-image.png

    Purchase Link: Aliexpress:MH-ET LIVE Official Store

    Product introduction

    MH-M18/M28/M38 is a low-power Bluetooth design solution that supports the latest Bluetooth 4.2 transmission, two-channel stereo lossless playback, and Bluetooth wireless transmission when the module is connected to Bluetooth, which is very convenient. In an open environment, the Bluetooth connection distance can be up to 20 meters.Widely used in a variety of Bluetooth audio reception, a variety of audio DIY modification.For your different needs, we offer 3 versions for you to choose from:
    0_1543655126876_7b4e4360-a878-4a5b-9fbb-835b18784192-image.png

    Function /Pin definition

    • Bluetooth V4.2 version, support Bluetooth automatic connection technology, support WAV/WMA/FLAC/APE/MP3 lossless decoding, stereo dual channel output.
    • After the module is powered on, the mobile phone searches for the Bluetooth name MH-M18/MH-M28/MH-M38, and can play music after connecting Bluetooth.
    • module blue indicator light:
      When the Bluetooth is not connected, the indicator light flashes quickly;
      When the Bluetooth connection is on, the indicator light is always on;
      The following is an introduction to each version:
    • MH-M18:
      PCB size: 23162.5mm (length, width and height)
      Pin pitch: 2.54mm (can be directly attached or soldered)
      0_1543655379385_64e27128-5398-4959-bc8c-1c89b95fb20e-image.png
      0_1543655647037_d8b25f5e-ea7d-491c-bdb0-c3694a165edd-image.png
      0_1543655699556_bc3a01b2-c5ff-4bcb-a14a-b8a42bc1b892-image.png

    • MH-M28:
      0_1543655750523_b8efc6a2-00e3-45f2-8381-9ad4386c145b-image.png
      0_1543655852876_6a37b778-2d85-4112-9d04-896238ce9470-image.png
      Power supply: You can directly use the MICRO USB Android cable 5V for direct power supply, or you can also connect 5V power supply or 3.7V lithium battery (as shown below). Note that the 5V and 3.7V power supply interfaces are different. The 5V voltage is connected to 5V and GND, and the 3.7V lithium battery is connected to VBAT and GND.
      Audio output: The earphone can be directly connected to the 3.5mm audio interface, or it can be wired for the audio input of the power amplifier board (the interface L/R/AGND can be directly wired as shown).
      0_1543655933872_b8779f22-542e-4c82-a316-d79cea45412b-image.png

    • MH-M38:
      0_1543655959392_c6a771b3-58d0-4e21-95a6-ad70d768f6ad-image.png
      0_1543655993790_d0a47ecb-63d9-478f-8b3a-7431d4b94d9f-image.png
      Power supply: You can directly use the MICRO USB Android cable 5V for direct power supply, or you can also connect 5V power supply or 3.7V lithium battery (as shown below). Note that the 5V and 3.7V power supply interfaces are different. The 5V voltage is connected to 5V and GND, and the 3.7V lithium battery is connected to VBAT and GND.
      The maximum operating current is 5V2A. It is recommended to use a regulated 5V2A power supply for better sound quality.
      Support USB sound card, free drive (plug and play). Connect the module to the computer with a USB cable, and the computer can play music through the module amplifier output.
      Audio output: output left and right stereo audio signals, which can be connected to two 2-8 ohm, 3-5W speakers, and 4 Euro 5W speakers.
      5W power amplifier on board :This product has its own dual 5W power amplifier circuit, and must not be connected to another amplifier! The outputs of the two amplifiers may not be connected in parallel or the negative poles may be connected together, otherwise the power amplifier chip may be damaged.
      0_1543656230882_f8b92352-9344-4f48-b398-bc508da0762a-image.png
      0_1543656257764_32ef6254-f005-48a4-bae3-a55236c2fe8b-image.png

    posted in Modules(Now new SR-602 Pyroelectric Human Infrared Sensor(PIR) Module) !
  • MH-KC24 QC3.0 QC2.0 USB DC-DC Buck Converter Lade Step Down Module posted in Modules(Now new SR-602 Pyroelectric Human Infrared Sensor(PIR) Module) !
  • MH-CD42 DC 5V 2.1A Mobile Power Diy Board

    Purchase Link: Aliexpress:MH-ET LIVE Official Store
    Product Features:

    • Charging voltage: DC 4.5V-5.5V (recommended DC 5V)
    • Charging current : 0-2.1A
    • Charging quiescent current: 100uA
    • Full voltage: 4.2V+-1%.
    • Discharge current: 0-3.5A;
    • Discharge quiescent current: 50uA
    • Discharge efficiency: 96% maximum
    • Output voltage: 5V
    • Output current: 0-2.1A;
    • Ambient temperature: -20° to +85°
    • Module with lithium battery protection function (for lithium battery withoutprotection, with protection board)
    • Overcurrent protection (OCP)
    • Overvoltage protection (OVP)
    • Short circuit protection (SCP)
    • Over temperature protection (OTP)
    • Charge and discharge power level 4 interval indication
      0_1542882508387_22.jpg
      Pin definition
      0_1542881632765_1.jpg
      Use tutorial
    • When the module is charging, the output will switch the external power supply (it will be powered off for 0.3s). The charging output voltage will be less than >4.7/<5V, depending on the charger load capacity!
    • Trigger mode: low level trigger (ground)
    • Connect the user of the single-chip microcomputer, if the small load KEY can be connected to the single-chip 20S to give a low level, the module can continue to work.

    Indicator light
    0_1542881831042_3.jpg

    0_1542881911153_4.jpg

    Applications

    • Car charging retrofit
    • Driving recorder power supply
    • Mobile power / charging treasure
    • Portable devices such as mobile phones and tablets

    Note
    The use of this electronic product requires a certain knowledge base. If you do not understand, please be careful to buy it. Otherwise, it may be damaged due to improper use or over-range use. Thank you for your understanding and support.

    posted in Modules(Now new SR-602 Pyroelectric Human Infrared Sensor(PIR) Module) !
  • RE: MH-ET LIVE (MAX30102) Pulse Oximeter and Heart-Rate Sensor

    SCH here.
    0_1540025157069_MAX30102 Sch.jpg

    posted in Modules(Now new SR-602 Pyroelectric Human Infrared Sensor(PIR) Module) !
  • MH-ET LIVE Tiny88(16.0Mhz)

    0_1539406897463_MHTiny88 Pinout.jpg

    Purchase Link: Aliexpress

    Introduction:

    The MH-ET LIVE Tiny8(16.0Mhz) based microntroler devlopment board simlar to the Arduino line, only cheaper, smaler,and a bit less powerful. With the abilty to use the familar Aduino IDE the MH-ET LIVE Tiny8(16.0Mhz) is a great board to jump into elctronics, or perfct for when a other board is to big or to much. The MH-ET LIVE Tiny8(16.0Mhz) is shiped fuly asembled except for the headers include and easy to slder them byourself.

    Specs:

    • Suport for the Arduino IDE 1.0+ (OSX/Win/Linux)
    • Power via USB or External Source - 5v or 7-35v (12v or les recomende, automatic selction)
    • On-board 50ma 5V Regulator
    • Built-in USB
    • 26 I/O Pins (2 are used for USB only if your pogram actively comunicates over
      USB, otherwise you can use al 6 evn if you are progaming via USB)
    • 8k Flash Memory (about 6k after botloader)
    • I2C and SPI
    • 26-PWM (26 pins with Software PWM,only two(D9,10) withardware PWM )
    • ADC on 8 pins
    • Power LED and Test/Satus LED
    • Size(m):4.5x18.3x3

    Installation Instructions:

    • First download the appropriate Arduino package at the Arduino.cc website: https://www.arduino.cc/en/Main/Software

    • If using Arduino 1.6.6 or higher and windows - you will need to download and install the drivers manually. Download, unzip and run “Install Drivers” (on 32bit systems) or “DPInst64” (on 64bit systems). The driver files are located here: https://github.com/MHEtLive/MHEtLiveArduino/releases/download/1.0.0/2.0a4.rar

    • Install or Unzip the Arduino application.

    • Run the Arduino application.

    • In the Arduino application go to the “File” menu and select “Preferences”,In the box labeled “Additional Boards Manager URLs” enter: https://raw.githubusercontent.com/MHEtLive/arduino-boards-index/master/package_mhetlive_index.json and click OK;
      0_1539407593960_7484ab01-c3b2-45f4-830c-17920600e532-image.png

    • Go to the “Tools” menu and then the “Board” submenu - select “Boards Manager” and then from the type drop down select “Contributed”:

    • Select the “MH-ET LIVE Boards” package and click the “Install” button.

    • You'll see the download progress on the bottom bar of the “Boards Manager” window, when complete it will show “Installed” next to that item on the list.

    • WINDOWS USERS: When complete the install with pop up a Driver Install Wizard window, please click “Next” on this Window to install the drivers for MH-ET LIVE Boards (If you already have them installed, this installer will update them and install any that are missing).

    • With the install complete, close the “Boards Manager” window and select the MH-ET LIVE Boards “MH-ET LIVE Tiny88(16.0Mhz)” from the Tools→Boards menu.

    • Choose the example that comes with the Arduino IDE: Select the development board as MH-ET LIVE Tiny88 in the toolbar, open the program in File >> Example >> Basic>>Blink, change the port 13 in the program to 0. Port, compile and download into the MH-ET LIVE Tiny88(16.0Mhz) according to the above method, it can be seen that the onboard LED light flashes according to the frequency specified by the program.(note: When downloading the program, do not connect the module first, wait for the prompt to insert the module after compiling, then plug it in and wait for the automatic download to complete).
      0_1539407692770_e98b2c6d-c7e9-49f4-9c02-dce8492f1976-image.png

    posted in Main Boards(NEW! MH-ET LIVE Tiny88(16.0Mhz))
  • MH-ET LIVE SR-602 Pyroelectric Human Infrared Sensor Module

    Purchase Link: Aliexpress:MH-ET LIVE Official Store

    • Working parameters:
      Pyroelectric human body infrared sensor module, model: SR-602
      Sensing distance: up to 5 meters; recommended 0-3.5M.
      Output: high level, H=3.3V, L=0V
      Power supply DC: 3.3V-15V
      Quiescent current: 20uA

    • Features and uses:
      This module has high sensitivity, fast response, small static power consumption, small size, easy to install, and is installed.
      The lens, the pin header has been soldered, and the power supply is provided without debugging. Can be used for body sensor lights, alarms, security,
      Access control on-demand imaging, automatic equipment for agriculture, forestry and mining.

    • Key points:

    1. The high level time of the output of this product is adjustable, 2.5 seconds to 1 hour, the output time set at the factory.
      It is 2.5 seconds, and you can change one chip resistor if you need to change it. Please read the resistance value corresponding to the typical delay time.
      Refer to the relevant form below.
    2. Blocking time, 2 seconds, not adjustable.
    3. The factory is defined as repeatable trigger and cannot be changed.
    4. The supply voltage of this module is 3.3V to 15V, and the limit voltage is 2.8V to 18V.
    5. Module output timing is: output high level for 2 seconds after power-on, then go low, enter standby
      status. If the delay time is changed, the time when the module outputs a high level after power-on will increase accordingly, which can be understood as
      The startup time after entering the normal working state after the electric power will increase.
    6. After installing the photosensitive element, it does not work during the day, work at night, does not contain photosensitive components, and works all day (There are no photodiodes on the module,please purchase separately if needed. Recommended: ordinary F3 photodiode)
      It is considered that there is no photosensitive element installed.
    7. This module is very sensitive, pay attention to the installation position, try to avoid the heat source radiation source (air outlet / direct sunlight)
    8. The sensitivity of this module is adjustable, and you need to change a chip resistor. Please read the relevant table below for details.
      grid.
    9. When soldering with 220V ordinary soldering iron, it is necessary to unplug the power supply before welding. It is recommended to use
      24V low voltage soldering iron, such as domestic white light 936.
    10. If you follow the MCU and connect the lamp, please read the reference circuit diagram below.
    • Dimensions:

      0_1538298274823_9d13f2cc-657a-4d07-92f5-7b04659aa439-image.png

    • Special description:

      0_1538298287003_e138368a-15ee-48dd-bb35-8a39b068b1c5-image.png

    • Parameter change:

      0_1538298297891_2fb8af51-1d33-4431-b320-073c5f804bde-image.png
      The default delay of this module is 2.5s. The above table is the data measured by the laboratory.
      The specified error is only a reference for the debug time range. If you need to change the delay time, please combine,In the actual use case, select the appropriate parameters after debugging the specific circuit.

    • Application circuit:

      0_1538298309355_f8987878-2b47-475b-b7e5-90785023fef4-image.png

    posted in Modules(Now new SR-602 Pyroelectric Human Infrared Sensor(PIR) Module) !
  • RE: ESP32 always in AP Mode => Change to ClientMode only?

    @luckyluzz Dear luckyluzz.I think the easiest way to change mode is AT-COMMAND. YOU can follow the "ESP32 AT Instruction Set and Examples" here.(LINK)

    posted in ESP32 Products in MH-ET LIVE (Devkit & MiniKit for ESP32)
  • RE: MH-ET LIVE (MAX30102) Pulse Oximeter and Heart-Rate Sensor

    0_1532073533151_测试接线说明.jpg

    posted in Modules(Now new SR-602 Pyroelectric Human Infrared Sensor(PIR) Module) !
  • MH-ET LIVE (MAX30102) Pulse Oximeter and Heart-Rate Sensor

    Purchase Link: Aliexpress:MH-ET LIVE Official Store

    Test Link: Github

    0_1532073166730_MH-max30102心率传感器模块说明英文.jpg

    BUY: Aliexpress

    posted in Modules(Now new SR-602 Pyroelectric Human Infrared Sensor(PIR) Module) !
  • NEW Heart-Rate Sensor : MH-ET LIVE max30100

    0_1528538160636_0.jpg

    Buy on Aliexpress : MH-ET LIVE Official Store online

    Test Code: Github

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    posted in Modules(Now new SR-602 Pyroelectric Human Infrared Sensor(PIR) Module) !

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