Second Prototype

Development Kit

This is the development kit for the second prototype. The white box in the top left-hand corner is the power supply. The green circuit board in the center left is the evaluation board for the speech processor - you can see the processor in the center of that board. From that board, there is a ribbon cable to the board below which contains the flash memory chip. To the right you can see the headphones and above that is a breadboard with pushbutton switches for pause, play, next book, previous book, next chapter, previous chapter, increase volume, decrease volume. Since this picture was taken, the scrolling function has been added.

Completed prototype

Here is a photograph of the completed second prototype, showing the circuit board, 1/2 Watt speaker, analogue and digital volume control, etc. The large chip near the top of the picture is the flash memory chip that contains the Bible narration and the large chip below that is the speech processor chip.