Dear all,
While working using arduino, Bootloader has crashed, we came with the solution for bootloading/burning hex file into Atmega328 without arduino using icsp pins in microcontroller and parallel port. we have taken the circuit and explanation from avrprogrammers.com.
While working using arduino, Bootloader has crashed, we came with the solution for bootloading/burning hex file into Atmega328 without arduino using icsp pins in microcontroller and parallel port. we have taken the circuit and explanation from avrprogrammers.com.
Here is a solution for Bootloading/programming Atmel atmega328 uisng ICSP pins.
Connect the atmega328 pins(MOSI, MISO, SCK, RESET and GND) as shown in schematic, power up the circuit with five volts. To do this I have used the ISP Programmer 1.2.0.56.
For software click here.
For software click here.
Here is the procedure for using this software:-
Monday, March 10, 2014
VXO
Dear all,
We wanted to make a simple solution for Lake City Net operating at 7085KHz daily between 8:15Am and 8:30Am. We have chosen IF as 4915KHz for which standard low cost crystals are available. This requires a LO of RF+IF=12MHz, We have happily configured a 12MHz VXO. This VXO fortunately covers 11995KHz also giving rise to coverage of CHARMINAR NET operated at 7080KHz daily until 8Am. Below is picture of experimental VXO and the table contains test result.
Different values of the crystal with different capacitor in X position
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