Wireless sensor network at 868MHz
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From: fasf on 22 May 2010 13:16 Hi, I want to realize a wireless sensor network at 868MHz: this network should be used in open ambient, so long range (and low power) is important for me. What do you think is the better solution? About protocol: i thougth ZigBee, but i haven't found interesting solution at this range (I may be mistaken)...A standard implementation is the best solution, but non strictly necessary....For me a lot of positive feedback from protocol users is very importat...last but not least, it shoud be free of charge and open source About transceiver: i'm looking for a very low power system on chip solution (8bit micro + transceiver) Can you help me?i'm a little confused... Thanks
From: TTman on 23 May 2010 02:29 "fasf" <silusilusilu(a)gmail.com> wrote in message news:ae974c27-aa40-4b9c-b29b-c132644ec8ec(a)o39g2000vbd.googlegroups.com... > Hi, > I want to realize a wireless sensor network at 868MHz: this network > should be used in open ambient, so long range (and low power) is > important for me. What do you think is the better solution? > About protocol: i thougth ZigBee, but i haven't found interesting > solution at this range (I may be mistaken)...A standard implementation > is the best solution, but non strictly necessary....For me a lot of > positive feedback from protocol users is very importat...last but not > least, it shoud be free of charge and open source > About transceiver: i'm looking for a very low power system on chip > solution (8bit micro + transceiver) > Can you help me?i'm a little confused... > Thanks Take a lok at Nordic semiconductor....They have an integrated 8051 solution, but the firmware has to be in an unprotected serial eeprom.... seriously bad design decision on their part so from a commercial point it's useless. Nice core though.... with all the low level stuff done for you. I use the non 51 version with code in a mega48P and it works well.
From: fasf on 23 May 2010 05:15 Thanks for your answer... > Take a lok at Nordic semiconductor....They have an integrated 8051 solution, > but the firmware has to be in an unprotected serial eeprom.... seriously bad > design decision on their part so from a commercial point it's useless. What protocol is used? It is free and open source? Thanks
From: TTman on 23 May 2010 07:48 "fasf" <silusilusilu(a)gmail.com> wrote in message news:b604ab59-3b4b-41b0-b5eb-ba9d24b1d123(a)f14g2000vbn.googlegroups.com... > Thanks for your answer... > >> Take a look at Nordic semiconductor....They have an integrated 8051 >> solution, >> but the firmware has to be in an unprotected serial eeprom.... seriously >> bad >> design decision on their part so from a commercial point it's useless. > > What protocol is used? It is free and open source? > Thanks > You have to write your own application code. Low level stuff is all done for you ( shockburst tm) and needs SPI master to talk to the chip.
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