This wireless board can send information over a virtual serial port opened in a device with the capability to start a Bluetooth communication. It also offers two small pushbuttons on board so that it is possible to program functions that include the use of those

The circuit board has been designed by David Cuartielles, and tested on different microprocessors to check that the communication actually works

The original brief included to realize a study of the use of a technology that would allow to develop prototypes without a computer. This is possible, but because of an issue related to the price of the different technologies, we decided that the best option would be to explore the use of a very simple Bluetooth communication chip

The board has been designed with through hole components, making it easier to solder in case anyone decides to build this type of board oneself. The only component that cannot be through hole is the Bluetooth chip

In this case we have chosen to use an on-board regulator for producing the kind of voltage value needed for the chip. Communication technology these days works at low voltages; in this case we need to power the IC with 3.3 volts

The circuit doesn't include an antena, therefore the communication can reach between 4 to 5 meters when using a computer with a Bluetooth dongle. Laptop computers typically include Bluetooth communication but it is not having a coverage range as good as the one of a dongle

The wiring board counts with two different serial ports, one is mapped on the pins 32 and 33, and this is the one that has been configured to program the board. And a second one mapped to the pins 0 and 1. We expect that wiring 5 will be able of retrieving data through the pair 0-1, what will allow us to make a better use of the wireless board

Attached to pin nr. 38 of the i/o board, this corresponds to S1, or pushbutton nr. 1 on the wireless board

Attached to pin nr. 39 of the i/o board, this corresponds to S2, or pushbutton nr. 2 on the wireless board