Week 2

Title: Purchase the hardware

1) Raspberry Pi Model B-2GB

The Raspberry Pi is a series of small single-board computers developed by the Raspberry Pi Foundation in the UK to promote the teaching of basic computer science in schools and in developing countries. The original model became far more popular than anticipated, getting outside its target market for uses such as automation, multimedia, robotics, IoT and now even in IR4.0

Here is the comparison table between Raspberry Pi 4 Model B vs Raspberry Pi 3 Model B+:

2) Bluetooth serial transceiver HC-05

This is the popular Bluetooth module, HC05 which can be configured as master or slave.

Master Bluetooth will be able to search for other Bluetooth devices and initiate connection.

Slave Bluetooth cannot search for other Bluetooth devices and can wait for master to initiate connection and accept the connection.

Features:

• Bases at CSR BC04 Bluetooth technology.
• With build-in 2.4GHz PCB antenna
• It’s at the Bluetooth class 2 power level.
• Range test: 10 meters
• Operating voltage: 3.3V to 6V DC
• Operating current in pairing is in the range of 30~40mA.
• Operating current in communication is 8mA.
• Interface via UART:
• Default baudrate in Normal mode: 9600 bps
• Default baudrate in AT Command mode: 38400 bps
• Operating temperature range: -25 °C - +75°C
• Dimensions 27mm×13mm×2.2mm