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433 MHz tape measure antenna -suits UHF transmitter tracking!
WokFi - parabolic cookware WiFi antenna!
433 MHz UHF lost model radio beacon
Mini DMM enhancement
The hopeRF modules are semtech factory seconds, they didn't meet the A grade standard.
That is A B or C grade silicon.Intel A , Amd A/B , Via C Processors for example
Medium Wave AM broadcast band resonant loop antenna.
Introducing LoRa™ !
Solar PV charge/discharge current monitoring
Kid friendly bamboo geodesic dome
Trellis + "Vivak" greenhouse-shelter-playhouse-garden room.
Don't know who this "range" request is for, but my response is that it depends on the RF environment, transmitter power & local band noise ! LoS (Line of Sight ), with simple ~165mm wire whip antenna & elevated I managed a good 500 metres with controlling PICAXE's at both ends. However at ground level thru' typical urban clutter (mostly wooden buildings here in NZ) I was lucky to get 100 metres. The spring antenna in my trials was NOT as good as the wire, so you'd perhaps max a few 100 metres in open space & under 100 metres in built up urban areas ( less if solid walls & conctrete etc).If you want more range then I can HIGHLY recommend Semtech's LoRa™ technology, which give km instead of 100s of metres. See => http://www.instructables.com/id/Introducing-LoRa-/
Bravo - although indeed a tad costly the Arcade's POV display should REALLY appeal to youngsters! Quite some years back (~2008) I PICAXEd a basic snap kit's sound module to very good effect. This proved cheap, versatile & very educational. See =>http://www.instructables.com/id/quotSnap-connectorquot-PICAXE-microcontroller/
Bravo - this POV display should REALLY appeal to youngsters! Quite some years back (~2008) I PICAXEd the snap kit sound module to good effect. See http://www.instructables.com/id/quotSnap-connectorquot-PICAXE-microcontroller/
Bravo on posting this - the whizzing POV display should REALLY appeal to youngsters! Quite some years back (~2008) I gutted & PICAXEd snap kit sound modules to good effect. See=>http://www.instructables.com/id/quotSnap-connectorquot-PICAXE-microcontroller/
Bravo on posting this - the POV display should REALLY appeal to youngsters! Quite some years back (~2008) I PICAXEd the snap kit sound module to good effect. See http://www.instructables.com/id/quotSnap-connectorquot-PICAXE-microcontroller/
LiFePO4 (3.2V) project, within a 3 x AA battery holder!
Hey, I just got the 4-ball. It was very good; be thanked.
PICAXE "snap connector" kids microcontroller kit!
Paddling pool solar water heater
Ok thanks anyways.
While trying to configure DRF1278DM with the USB adapter I can't even open the programm it just ends with this error:""Error reading suiNumberEdit_RfFrequency-> Text: '434:000' is not a valid floating point value!"Does anyone know why this happens? - GabrielS119
Trying to get the link changed, it did expire because of some issue on Dropbox a while back. I don't have any code for the DRF1278DM, its a completely different hardware interface to the DRF1278F and RFM98 that my code was for. - srnet
Another way would be to put a 100pf capacitor across the LC circuit. It will resonate at a lower frequency.
Excused thanks for the info.
Hi, why do you think that the for LoRa required range of 863 - 870 MHz is legal ? It only would be compliant if there is no use above 868. The band 868 - 870 MHz has a restriction of -27dBW. It is not possible to restrict the use of LoRa below 868 MHz. This would not be in accordance to the existing LoRa standards.http://thethingsnetwork.org/wiki/LoRaWAN-FrequenciesThe same applies for European equipment for wireless M-Bus. A compliance request to RSM regarding 868 was rejected. The -27dBW (2mW) does not allow a decent operation for a wireless network.The conclusion for me is that the 863-870 MHz band can't be used in NZ. Same allies for AUS. Regards Michael
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