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Monday, November 7, 2016

Weekly Updates: 31st Oct - 6th Nov

This week lots of testing and RF sniffing. And problems with Windows.
Well my main Laptop gave up, it was Windows 7 Professional 64bit. Though its a beast of a laptop but updates caused a problem. Lenovo asked for an update to BIOS. It was already 00:30 IST and I agreed on installing that. That was all . Next day morning the same laptop stopped booting. After 3 formatting attempts , 2 hardware diagnostics attempts and banging the head 10 times on the wall. I found it was bug in the update of that night. Finally I had got the laptop to boot by disabling some thing called "Execution Prevention and Memory Protection". But by that time the Windows already had gone corrupt on the HDD. So I had to reinstall the complete Windows 7. And to add to the misery Windows Updates on Windows 7 Professional taking eternity to even search. Still waiting on that one.

Fortunately all the current weeks projects are on my PC which is alright. So we are safe to Proceed.
868MHz Transmission from RFM69HW - LDR sensor Values
Well this is an SDR-Sharp Plot of the RF transmission from my RFM69HW based prototype board. The Arduino + RFM69HW Sensor is sending out LDR sensor Raw values to another gateway board connected to the PC. Initially I used the RFM69 driver from Lowpower labs . Later I wrote my own to outdo the adventure.Interestingly the found that 18cm of Wire is an Ideal Antenna for RFM69HW boards. That part was success now working on Signal Reception to formulate a presentation layer protocol above the Raw communications.

Next project RF-udaan is still on track. The boards were already shipped from DirtyPCB. Hope to receive them by this month end (fingers crossed).

Not much progress on the Website porting side. As kept busy with the driver writing work.

Hope to catch up on more this week.

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