Strict Standards: Non-static method cls_image::gd_version() should not be called statically in /home/sandal0/public_html/includes/lib_base.php on line 346
Adafruit USB Power Gauge Mini-Kit_擴充_Raspberry Pi樹莓派專業店-跂礄旗艦店 - Powered by ECShop
當前位置: 首頁 > 擴充 > Adafruit USB Power Gauge Mini-Kit

相關商品

瀏覽歷史

Adafruit USB Power Gauge Mini-Kit

Adafruit USB Power Gauge Mini-Kit

prev next

  • 商品貨號:SA000280
    商品庫存: 6
  • 商品點擊數:914
  • 本店售價:NTD857元
    註冊用戶:NTD729元
    用戶評價: comment rank 5
  • 商品總價:
  • 購買數量:

商品描述:

商品屬性

Adafruit USB Power Gauge Mini-Kit

 


 

 


 

 

 

 

貼心提醒

 


本產品已焊接好

兩端是 USB 一公一母

一邊是有六根針腳可以轉接上 TTL 轉 USB 線

http://rpi.o4l.com.tw/?p=2629

 

產品特色

 

This little USB port go-between is like a speed gauge for your USB devices. Instead of hauling out a multimeter and splicing cables, plug this in between for a quick reading on how much current is being drawn from the port. Great for seeing the charge rate of your phone or tablet, checking your battery chargers, or other USB powered projects.

Data is passed through transparently from end to end, so you can use it with any USB device at any speed. The power line has a 0.1 ohm current sense resistor and an INA169 high-side current sensor that is tracked by a little ATtiny85 chip. The microcontroller is programmed to read the current draw as well as the bus voltage and light up the strip of LEDs on the side.

The blue LEDs will light up, one for each Watt of power draw (which is ~200mA at 5V nominal), with a couple levels of PWM dimming for increasing current. You can measure up to 1A of current draw - most USB ports are rated for 500mA. It's safe to use this with something that draws up to 2 A of current, it'll just 'max out' the LEDs.

The green LED is helpful to tell if you have too much droop on your power line. It stays lit as long as the voltage is higher than 4.5V, most devices won't charge effectively once it goes below that so if the green LED goes out, you know you should check your port, shorten the USB cable, or reduce the current draw.

As an awesome extra, we also print out the voltage, current and wattage data as readable text on the TX pin at 9600 baud. Connect an FTDI friend, USB console cable, microcontroller, XBee, whatever you want that can read 9600 baud TTL serial data for datalogging, plotting or display.

Comes as a mini kit with an assembled & tested PCB plus a separate USB jack and plug as shown above. Before use, solder the jack and plug. It'll only take you a few minutes and can be done with any soldering iron. Or, advanced users can splice it between a USB extension cable.  

 

 


 

 

產品規格
 

  • 點子板尺寸:17.72 x 27.09 x 3.52mm


 


 


     

商品標籤

購買過此商品的人還購買過

USB 轉 TTL 線 for 樹莓派

USB 轉 TTL ...

NTD170元

用戶評論(共0條評論)

  • 暫時還沒有任何用戶評論
總計 0 個記錄,共 1 頁。 第一頁 上一頁 下一頁 最末頁
用戶名: 匿名用戶
E-mail:
評價等級:
評論內容:
驗證碼: captcha