70 lines
2.9 KiB
Markdown
70 lines
2.9 KiB
Markdown
# Hardware
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## Overview
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All hardware schematics and board files are designed using [KiCad](http://kicad-pcb.org) open-source CAD software.
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> KiCad is free software. KiCad is made available under the GNU General Public License(GPL) version 3 or greater.
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All KiCad design files are available within the [HARDWARE](HARDWARE) directory within this repository.
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You may download KiCad* and open for reviewing or editing each of the PCB files.
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The schematics are also available as PDF files for easier viewing and/or printing.
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**NOTE**: Make sure to download the latest KiCad nightly development build.
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The latest stable build may not have the features required.
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## Introduction to the hardware of TERES-I
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The TERES-I electronics part consists of five boards:
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### Main board (PCB1-A64-MAIN)
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The main board (PCB1-A64-MAIN) contains:
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* A64 processor
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* RAM and flash NAND memories
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* Power management unit
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* LCD converter
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* Connectors to different interfaces
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* and others
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It looks like this:
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We expect to release extra main boards with different processors and memory configurations in the future.
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These should work with all other existing boards.
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It is expected newer main boards to have higher laptop speed and improved memory performance.
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### Keyboard controller (TERES-PCB5-KEYBOARD)
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The **KEYBOARD controller** board (**TERES-PCB5-KEYBOARD**) is responsible for handling the keyboard and touch pad interfaces.
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This keyboard controller board allows you to completely reprogram the keyboard mapping and response according to your own taste.
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The TERES-PCB5-KEYBOARD contains an AVR processor.
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Sources, binaries and update procedures for the AVR firmware are available at GitHub.
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You can update the firmware of the keyboard/touch controller live on the board itself.
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It can also be programmed via an Arduino microcontroller.
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Touch screen parameters can also be changed.
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### I/O board (TERES-PCB2-IO)
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The **IO** board (**TERES-PCB2-IO**) contains the USB connector, headphone/debug connector, SD card, speaker connector and microphone.
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### Power button (PCB4-PWR-BTN)
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The **PWR** button board (**PCB4-PWR-BTN**) handles the keys for powering on and off the laptop.
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### Touch buttons (TERES-PCB3-TOUCH-BTN)
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The **TOUCH** buttons board (**TERES-PCB3-TOUCH-BTN**) contains two buttons for left and right mouse click emulation.
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