Product category: Wireless Communications
News Release from: Radiometrix | Subject: Firmware for remote radio control
Edited by the Electronicstalk Editorial Team on 15 February 2007
Radio remote control
without extra logic chips
Radiometrix is including in some of its radio modules, a firmware version that allows simple control functions to be issued remotely without the need for a processor or dedicated logic chip
There are certain user applications where very simple 'on/off' control functions are all that are needed. Common examples, such as long-range lighting controls, alarm sounders, or machine shutdown safety systems, will normally require a microprocessor or dedicated remote control IC in addition to the radio module itself.
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Having to include such chips will incur extra cost, expand the system size, and increase the software overhead.
Radiometrix solves this problem by programming in a special version of the internal firmware (ordered with a -CX suffix) which allows the radio units to be used as a very simple remote control link.
Two input/outputs are provided: latching and momentary.
No external control device is required, thus keeping the space, cost, and development time reigned in.
Currently this option is available in the LMT2 and LMR2 ISM band modules.
These are a small sized (LMT: 33x23x9mm, LMR: 43x33x9mm) narrowband, multichannel transmitter/ receiver pair.
The sensitive receiver, combined with the 10mW transmitter, gives an operating range of over 500m.
Only a suitable aerial, a 3.1-15v power supply, and the user's application circuits, need be added.
A simple serial programming port allows channel selection (one of 32), as well as set-up of the 16 bit unit address.
These radios operate on the 433MHz band, and are EN300-220 compliant.
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