Acrylic Box for Arduino Mega2560

Device to measure the power consumption of any device powered by USB: phones, chargers, USB disks, consoles, tablets ...
USB Digital Power Voltmeter Tester Amps features:
- Operating range: voltage 3.5 - 9V
- Current 0 -3A
- Resolution: 10mV 1mA
- Error: <± 1.5%
- Dimensions: 60 x 23 x 19mm

- Measurements:
* Inner diameter D: 5mm
* Outside diameter D: 14mm
* Width - dimension B: 5mm
* Dimension C1: 1mm
* Dimension D1: 16mm
- Quantity: 1 unit

Voltmeter Amperemeter DC Red and Blue 100V 10A features:
- Supply voltage: 4.5V to 30V
- Voltage measurement range: 0V to 100V (± 1%)
- Min voltage resolution: 0.1V
- Current measurement range: 0A to 10A (± 1%)
- Min current resolution: 0.01A
- Operating current: 5mA to 15mA
- Display: Red LED color (Voltage) and Blue LED color (Intensity)
- Includes reverse polarity protection
- Measurement refresh time: 500ms
- Screen dimensions: 48 x 29 mm
- Recessed hole: 45.5 x 26.5 mm
- Depth: 21 mm
- Cable length: 150 mm
- Operating temperature: - 10ºC to 65ºC
- No battery needed
- Dual panel with voltmeter and digital ammeter

SIM900 Four Band GSM GPRS Module with Antenna shield for Arduino features:
- GSM / GPRS SIM900 module-based development card / shield from Simcom
- The shield allows you to get SMS, MMS, GPRS and audio via UART by sending AT commands (GSM 07.07, 07.05 and SIMCOM Enhanced COM Commands).
- The shield also has 12 GPIOs, 2 PWMs and a ADC of the SIM900 module (All of them are 2V8 logic) present on board.
- Quad-Band 850/900/1800/1900 MHz: it would work on GSM networks in all countries of the world. - GPRS multi-slot class 10/8
- GPRS mobile station class B
- Complies with GSM phase 2/2 +
- Class 4 (2 W @>

This module has three modes (control, music and bluetooth). The audio files can be saved on the U disk and on the TF card.
Its remote control allows you to control the audio output (volume down or up, music change, mode change). Bluetooth Decoder Module Amplifier Audio Receiver USB TF features:
- Interfaces:
       - 5V micro USB supply
       - USB audio
       - U disk
       - LED
       - TF card
       - IR remote
       - AD key interface to connect external circuits
       - Bluetooth decoder
       - 3.5mm stereo output
       - Left and right 3W channels handling speaker
       - 2 3W amplifiers
- Supply voltage: 3.7-5VDC
- Signal / noise ratio (SNR): 90 dB

DT321B Digital Multimeter, Portable Multimeter, AC / DC Voltage Meter, Blue Backlight, Battery tester, Transistors tester, Acoustic Continuity Tester.

Tower Pro Micro Servo 9g SG90 features:
- Operating voltage: 3.0-7.2V
- Speed (4.8V without load): 0.12sec / 60 degrees
- Strength: 1.2kg / 42.3oz (4.8V); 1.6 kg / 56.4oz (6.0V)
- Working temperature: -30 to +60 degrees C
- Cable length: approx. 23cm
- Includes photo accessories and screws
- Dimensions: 22x11.5x27mm

Digispark is a development board based on the ATTINY85 microcontroller from ATMEL born in a successful campaign on Kickstarter.
Similar to the Arduino line , It is one of the smallest boards on the market.
Programmable directly from USB with the same Arduino tools. It has a built-in Micronucleus bootloader and can be replaced by similar ones such as the Trinket bootloader. Adafruit or others.
You can use many of the same Arduino libraries and you have your own on the digispark wiki. Arduino compatible Attiny85 Digispark board features:
- USB power supply
- External power supply (7v-35v DC 12v maximum recommended)
- 5V DC 500mA regulator on board
- Programmable with the Arduino IDE
- Loaded with Micronucleus bootloader