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Designer Systems
Bespoke Electronic Design & Manufacturing in the UK

RS232 serial & I2C InfraRed Communications Module Technical Data
• • • Register compatible with the DS-WCM range Features FWCM broadcast and extended data registers Network 255 OOPic (II, -R & -C) controllers / PC’s with 100% data accuracy, just think 255 individually controlled robots !! Not just TX & RX modules,but a complete addressable network. Micro-sized module (14mm x 35mm high quality PCB) plugs directly into the OOPic (II, -R & -C) I2C programming connector. RS232* or I2C communication interface for simple connection to PC, OOPic, BASIC Stamp etc. Full bi-directional communication with packet checking, error correction and anti-collision. Infrared remote control support for Philips, Sony, SKYdigibox and NEC format.

Firmware version 1

The Designer Systems DS-IRCM is a highly integrated infrared wireless communications module that allows the formation of a local area bi-directional wireless network capable of transferring data over a distance of up to 10 metres. Specifically targeted at the OOPic (II) & OOPic-R embedded control module and the Personal Computeruser the IRCM features I2C and RS232* communication. Communication between IRCMs’ is through self assigned node addresses with a maximum network consisting of 255 IRCM nodes. Data is transferred by simply writing a value (Nine (9) values in expanded data mode) and a destination node to the local IRCM and waiting for confirmation that the data has been sent successfully. The IRCM handles all theerror correction, anti-collision and data confirmation protocol necessary for error free transfer. In addition the DS-IRCM features the decoding of Infrared remote control data with support for Philips (RC5), Sony, SKY digibox and NEC format. This allows your robotic project to be easily controlled using most remote controls found in the modern home.

• •

The DS-IRCM hasapplications in robotics, remote control, data transfer etc. Application notes for the OOPic (II) & OOPic-R controller are provided (loop test program & X4 Rover remote control controller).

Selection Guide
Description Infrared Communication Module PC (DB9) to free end cable 1.5m* Part Number DS-IRCM DS-232CAB

* Connection must be self-soldered on to the module to support thisoperational mode.

© 1997-2007 Designer Systems COMMS15.06.03 Revision 1.02

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Power requirements
The DS-IRCM takes the power necessary for operation from the OOPic or an external +5V supply. Warning: Mis-connection of this connection may damage the DSIRCM.

Normal Mode
The DS-IRCM when configured for normal mode allows two or more (255 max.) IRCMs’ to forma wireless network capable of transmitting and receiving bytes of data to/from any other IRCM on the network. Each IRCM can allocate its own local node address, which allows peer-to-peer or server based transfer of data as required by the wireless application. Data is transferred a byte at a time (Nine using expanded data mode) with each transmission being checked and confirmed by the remote IRCMnode before another can be sent. This protocol ensures that the data sent to the remote IRCM is always 100% correct, thus preventing errors that could cause robot failure or destruction. Broadcast mode… If a write to remote node address 254 is undertaken the sending and receiving IRCM(s) automatically enter broadcast mode. This mode allows the sending node, i.e. PC, to broadcast data to multipleremote IRCM(s) simultaneously to allow, for example, the control of multiple rovers. In this mode the remote IRCM(s) will receive the broadcast data even if their local node address is not set to 254 and make it available to the connected device i.e. OOPic etc. Broadcast mode differs from a standard mode transfer by the fact that the sending IRCM node does not wait for a confirmation from the...