47 lines
1.7 KiB
Markdown
47 lines
1.7 KiB
Markdown
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### Introduction
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This is the Hackerspace Warsaw electronic lock mk2 project.
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Work in progress! This is a prototype for a TP-Link WR703n based hardware
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solution - with a I2C bus on which there is a MAX7300 IO expander and a PN532
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NFC tag reader. The I2C is software bit-banged by the kernel, drivers for both
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the IO expander and the PN532 are written in Lua.
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### Overview
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The hacklock is mae out of two separate pieces of hardware:
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* The main lock unit, which runs Linux on a low-power SoC, has one I2C bus
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to communicate with an NFC reader and some GPIO, and a second I2C bus to
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communicate with:
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* The keypad, which is a 10-key (or more) physical keypad attached externally,
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and is based around and ATMega8 uC (they're cheap!)
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### Current hardware status
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Right now the project is in a prototype status. The keypad part is nearly
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identical to what will be in production, except that the PCB is home-etched.
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The main lock part itself is however based on a TP-Link WR703N router with
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OpenWRT and a software I2C bus. In the future, it will probably be replaced
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woth a custom i.MX233-based 4-layer board.
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### Files
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* **software/**
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* **main/** - code for the central unit of the lock
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* **main.lua** - main Lua script
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* lua-libs/ - other Lua libraries
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* mips-bin/ - C libraries compiled for MIPS/OpenWRT
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* luai2c.tar.gz** - C i2c library source
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* luasha2.tar.gz - C sha2 library source
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* **keypad/** - AVR code for the keypad
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* Makefile - the makefile for the keypad firmware
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* **hardware/**
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* keypad/ - KiCAD files for the keypad PCB
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### Hacking
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Feel free to hack around. The whole project, however, is not anywhere near
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release, so things will change around and probably make no sense at the moment.
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