Open Access 4.0

Open Access Control v 4.0

This page contains documentation, installation tips and downloads for the all-new Open Access version 4. Open Access is a first-of-its-kind offering that brings enterprise security to the hobbyist, hacker and developer. The system is open-source and not encumbered by licensing, NDAs and other problems found with commercial hardware.

System Features

The Open Access Standand version 4 has an Arduino-compatible Atmega 328P on-board and support for powering and interfacing with the Raspberry Pi via it’s 26-pin header. Features include:

• Atmega328P with support for 200 local users in eeprom. Arduino compatible w/USB and ICSP programming.
• (2) Wiegand RFID reader ports with fused power, LED, and buzzer support
• (4) Supervised alarm zones
• (1) Unsupervised tamper zone
• (4) 5A relay outputs
• (2) 12V auxiliary power ports
• Selectable USB output or direct-attach 3.3V UART to the Raspberry Pi
• Real-time clock with battery backup (DS1307)
• Serial i2c EEPROM (Atmel AT24)
• Expansion header for CD or more inputs/outputs

Support and Documentation

Jumpers and settings

• Open Access v4 Jumpers

Electrical Specifications

• Open Access v4 Specs

Schematics and Design Info File:Open Access v4 schematic.pdf

• Full set of schematics for the Open Access v4, in PDF format.

RFID Reader Documentation

• EM4100 Reader pinouts

Software Downloads

Firmware File:Open Access Control v4 std 136.zip

• Latest firmware (v1.36) for the Open Access v4 Hardware
• Requires Arduino v1.0 or higher.

Mounting Template

• Mounting template for installing the Open Access v4
• Prints as actual size (approximately 4x6")