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This is a continuation of my already started project, but more powerfull.

i get some problems with devices consumption and I want to see how every device need power, to get later correct batteries and PSU. The device can: power up your Raspberry Pi; power up your Arduino; control desinged USB devices power; monitor how charges your batterys; remotely monitor and if needed restart any USB port.rted working with Raspberry Pi's and Arduinos i get some problems with devices consumption and I want to see how every device need power, to get later correct batteries and PSU. The device can: power up your Raspberry Pi; power up your Arduino; control desinged USB devices power; monitor how charges your batterys; remotely monitor and if needed restart any USB port.

6 port USB power meter with 2.2" LCD display will monitor every USB port and show real time used current (A) and power (W) maesuring up to 3AMPS and batterys charging (mAh).

With added 4xUSB 2.0 hub to it you can use it with your's Raspberry Pi or PC for connecting external USB flash or HDD, Wi-Fi or Bluetooth dongles and others devices, like USB port extension and USB PSU/charger. It will help you to project any USB device and control it's consumption.

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Details

I decide to make this device while working with 3 Raspberry Pi (2, 3 and Zero) and Arduino boards. I have all devices connected to external 4 port USB hub with power supply and often seen what it's not enough power for 2 Pi's and Arduino at one time and I think what will be great option to see every connected device power consumption. To calculate later needed batteries and power suplies.

So how it works?

It consist from three parts:

• 6x port power meter whitch have 6x Current sense aplifiers (LT6106) connected to Atmega32L ( I take exactly Atmega but none Arduino because I wanted to make device smaller). It can messure up to 12A. Connected 2.2" LCD display realtime show whats happening with USB ports;
• 4x port USB 2.0 hub with Fe1.1s chip. Yes it's exactly USB 2.0 standart (I have studied and designed a board according to the specified standard for USB 2.0);
• This devise power suply wich have "Low Loss PowerPath" (LTC4412) for interrupted power switching between USB port (if you want to power it or use with USB hub) and external power suply (which desinget with Texas Instrument WEBENCH tool) made from Step-Down (Buck Converter LM3150) with up to 12-A Continuous Output Current.

For device powering need use power supply with 9-12v and up to 12 Amps. Output make to 6 USB ports with every port displayed on the OLED display current and power, there you can monitor what's happening with any device connected to this USB PSU.

This can be like:

• Arduino boards,
• Raspberry Pi,
• Wi-Fi or Bluetooth dongle,
• USB flash or external 2.5" HDD/SSD,
• Or any other device with 5V power.

Design and monitor your device consumption... whatever it will be.

Future Options

• Added ESP8266 Wi-Fi module, - DONE
• Add on/off switches - Added remotley controlled MOSFET switches, - DONE
• Add bigger LCD 1.8" or bigger? - Added 2.2" color LCD with touch screen, -DONE/configurating
• Change Buck Converter to more powerfull (already in project), - DONE
• on for