For my development projects I recently ordered 10 pieces of 100x100mm double layer PCBs from ALLPCB and the process went great through and got 13 pieces as a bonus for only $5(!) including the express DHL delivery. Order details: 10 pcs of 100x100mm PCBs for TSSOP, QFN, DSBGA with 0.5mm pitch 0.2mm pads, 8 – […]
A few months ago I found the WebSDR portal collecting a list of currently active WebSDR servers. Very nice job done by people at University of Twente in Netherlands, especially by PA3FWM. He is running his wideband [0.000 – 19.440 MHz] direct sampling receiver http://websdr.ewi.utwente.nl:8903 using fast ADC and FPGA connected to 2 x 10 […]
Many embedded applications today can use 32bit microcontrollers based on ARM Cortex core which is beating down the 8bits prices and support. When you need more computing power including DSP instructions built in RISC, a huge amount of peripherals, timers, interfaces, high-pin count in FQP and BGA packages, up to 1MB of Flash and >128k […]
Ionosphere conditions seem to follow a predicted tendency to reach a maximum in 2012/2013, so we may experience a long lasting DX openings and maybe blackouts :/ too. This situation is obvious from the diagrams at NOAA Space center: http://www.swpc.noaa.gov/SolarCycle/ http://www.swpc.noaa.gov/SWN/index.html Signals often travel in mysterious ways, so we can reach Australia and […]
One friend called and asked me for help. His Honeywell Thermostat (model …) failed to display data on its LCD. to be continued