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โมดูลลดแรงดัน Buck converter 6.5v-40v เป็น 5V usb พร้อมจอ Step Down Module DC 6.5V-40V to 5V USB + Voltmeter

Module performance and highlights:

 
1. Ultra-wide voltmeter range: DC4.5~40V
 
2. 5V/2A output current capability ( 5.0V voltage can be output stably when the input voltage is 6.5~40V )
 
3. One key ("output enable" key) switches the USB output, one key ("low power consumption" key) enters ultra-low power consumption
 
4. The on-board voltmeter can be self-calibrated, and there will never be a problem with the voltmeter! !
 
5. With reverse connection protection, reverse connection does not burn
 
6. With over-current and over-temperature protection
 
7. With USB power indicator
 
8. With terminals, easy access to the line
 
9. High efficiency, low ripple
 
10. Module size: length 58mm width 21mm height 10mm
 
11. Weight: 13g
 
 
 

Module usage instructions:

 
After the module is powered on, the voltage can be detected in real time. When you need to charge digital products such as mobile phones, Ipads , MP3s , etc., just touch the "output enable" button. At this time, the USB power indicator lights up, and the USB outputs 5.0V voltage; When you need to turn off the digital tube, touch the "low power consumption" button, the module will enter the ultra-low power consumption standby mode, and the USB output will be turned off accordingly.
 

Module usage:

 
The ultra-wide input voltage can be used for cars / battery cars / motorcycles to monitor the battery voltage, grasp the battery status in time, and can be used for various voltage measurement purposes.
 
5.0V , 2A output current capability, enough to meet various USB devices, the voltage is very stable.
 
Note: This module defaults to D+ D- short-circuiting, which is compatible with most mobile phone charging, and reserves the installation positions of various mobile phone identification resistors. If you need to add identification resistors, please cut off the wires connecting D+ D- and add them by yourself. That's it.
 

At present, the definitions of USB power charging identification of major manufacturers are organized as follows:

 
Samsung: It is more complicated. Some general designs are not special, and some are shorted to D+\D-.
Nokia: D+\D- is shorted
HTC: D+\D- is shorted
Microsoft Zune: D+\D- is shorted
BlackBerry, MOTO, Sony, Meizu: some D+\D- are shorted, some have no identification circuit, general
Apple: identification Resistor, backward compatible with short- circuit innovation :
identification of resistance, incompatible with short- circuit Of course, special circumstances cannot be ruled out. In addition to the Apple identification circuit, Apple's circuit is compatible with D+ and D- short circuits.
 
 

The circuit diagram of the USB identification resistor is as follows:

 
The resistance is: 0805 package 1% accuracy
 
49.9K*2 logo 4992
 
75K*1    logo 7502
 
43K*1    logo 4302
 
Note: Iphone D+ is connected to 75K D- is connected to 43K (as shown in the picture), compatible with D+ D- short circuit
 
IPAD D+ road is connected to 43K D- road is connected to 75K (D+D- exchange)

 

Two-wire on-board voltmeterSelf-calibration method:

 
1. When the on-board voltmeter is working normally, press and hold the " Output Enable " button for 2 seconds and then release it, the voltmeter will flash, and the voltage adjustment mode will be entered;
 
 2. Tap the " Output Enable " button, the voltage will increase by one unit, tap the " Low Power " button, the voltage will decrease by one unit; since the voltage value of one unit is less than 0.1V , you need to press 1-5 continuously You can see that the voltmeter has changed by 0.1V after several times, and the specific number of consecutive keys depends on the currently displayed voltage value.
 
3. After the voltage adjustment is completed, press and hold the " Output Enable " button for 2 seconds and then release it. At this time, the voltage calibration mode can be exited, and all parameter settings will be automatically saved after power off .
 
Note: In this adjustment method, you only need to calibrate once to get the voltage value on the entire voltage range. This function is designed to meet your higher accuracy requirements, please use it with confidence.
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Exchange or return policy



Every item comes with a 30-day warranty. However, there are certain conditions that apply:

  1. The customer should not be responsible for any self-inflicted damage, such as incorrect power connections (for example, supplying 5V instead of the required 3.3V for a sensor).

  2. The product must be in perfect condition, without any breakage or damage caused by electricity (e.g., short circuits leading to electrical fires).

  3. The store does not accept product exchanges due to customer misunderstandings, such as purchasing the wrong size for their project or buying something without eventually using it. Customers can inquire about the product details and ensure compatibility before making a purchase by contacting us through our Line account @modulemore during business hours. Please note that there may be delays in response between 12:00 PM and 2:00 PM.

Return Policy: To initiate a product return, customers must provide the original receipt or a copy for quick verification. Returns can be sent to our store address by following these guidelines:

  1. Provide a detailed description of the damaged item(s).
  2. Mention any tests or experiments conducted by the customer.

Please note that the store reserves the right to make the final decision regarding product replacement or refund.

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Arduino compatible board, Iot, ESP32, ESP8266, Nodemcu, Raspberry pi, micro:bit and etc.
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