Acrylic Box for Arduino Mega2560

It is very easy to make it work with an Arduino, PIC or any other microcontroller.
In its output pin we will be able to measure the PWM pulse width depending on the distance of the obstacle.
HC-SR04 Ultrasonic Sensor Distance Measuring Module features:
- Supply voltage: 5V (4.5V- 6V)
- Consumption: 30 mA typical, (35 mA max)
- Interface: VCC , GND, Signal
- Range: 2 cm to 3 meters
- Angle 15º
- LED indicator of measurement in progress
- Frequency: 40 kHz for 200 µs - Size: 30mm x 20mm
- Quantity: 1 unit
Useful links for Arduino / Raspberry programming and projects with boards Arduino / Raspberry:
Automatic robot operation with obstacle detection />

Electronic Antistatic Wrist Bracelet ESD Blue features:
- Electronic Antistatic Bracelet, blue color
- Protection against electrostatic charges
- Adjustable bracelet with crocodile clip connector
- Material: The conductive elastic band is made of nylon and woven in stainless steel
- Extensible length up to 180 centimeters
- Weight: 25 gr.
- Quantity: 1 loose unit in plastic bag

Blue 2 pole PCB mount screw terminal 5.08mm pitch Printed Circuit Board Terminal 3 poles 5.08mm pitch features:
Number of Contacts: 3
Pitch: 5.08mm
Number of Rows: 1
Mounting Type: PCB
Gender: Male
Allowable Section: 1.5mm2 (22- 14 AWG)
Termination method: screw
Type: screw terminal block
Nominal current: 16A
Nominal voltage: 250V
Color: blue
Material: Nylon 66
Depth: 10mm
Width: 7.5mm
Length: 10mm

LITHIUM POLYMER BATTERY Battery LIPO 180mAh 3.7V features:
-Battery type-lithium polymer. -Type of battery terminals- 3 wires. -Voltage of the battery-3.7 V -Capacity of the battery- 180 mAh. - Embedded PCM security chip (protection against overload, over discharge, short circuit Dimensions: -Length / depth of the battery- 20 mm -Battery width / diameter -31 mm It has three cables with a 3-pin connector with a separation of 2 mm. Wires: Red: positive. Black: negative. Yellow: thermistor output. The technical file: Battery LIPO.pdf

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

It allows controlling many different types of engines: - Up to 4 bidirectional current motors
- Up to 2 stepper motors (unipolar or bipolar) In addition it is provided with two connectors for servos.                   L293D Motor Drive Shield Expansion Board features:
- Minimum operating voltage: 4.5 V
- Maximum operating voltage: 36 V
- Maximum current: ± 1.2 A (650mA)
- Logic voltage: 5V
- Controller L293D
- Measures: 70x55x20 mm L293D controller consists of 4 H bridges with 650 mA current with thermal protection.
Pull-down resistors keep the motors off during startup.

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 @>