Hello, everybody.
I get programmable antenna Rotator http://www.ebay.ie/itm/RCA-VH126R-A...177?pt=LH_DefaultDomain_0&hash=item3f2612cdc1 and its working perfect with my lightweight 2el 2band Moxon antenna. I have programmed it for every 30 degrees, but I want to put this Control unit in the new box with azimuthal map shown on this box. Have pushbutton switches with LEDs and will put every 30 degrees also. Control unit have keypad switches, but I want to use my new switches with LED included in this switch.
The keypad have resistance about 60 Ohms between working contacts. Do I need to put resistor in series with new switches, or it will be okay without resistors??? There is AT89951 and 8-th inputs is connected straight to the keypad.
The number of memory channel is shown on separate 7 segment LED display by some letter (A, b, C, d, E, F, g, H, I, J, U, L). This channel letter is active every time (even after switching off-on). After pushing another memory button, Display starts showing new memory channel Letter and rotator turns. But I dont want to use this 7 digit LED display, because its not informative. More informative will be separate pushbutton switches with LED every 30 degrees around the azimuthal map, because they lights and shows direction. Also there is another double display which shows degrees (decimal) without last third zero, but its easy to put this zero. I will use it also.
The problem is, that I dont know how to decode every memory channel letter and make to light my pushbutton switch LED. I have tried few variants using AND logic, but my knowledge is not enough. Have browsed internet, but cant find anything useful (my English is not super also). Maybe somebody can help me and give useful schematic advice, please!
AT89951 outputs is connected to 3 separate anodes of memory LED display and double degrees LED display using n-p-n transistors. Its okay, but all 3 the same segment LEDs is connected in parallel and to the same PIC output. I have checked signals on all segments using oscilloscope, but cant find low or high there is many impulses and this impulses is changing frequency and polarity while Rotator is working. Too crazy for me
If you can help and need more info about this Control unit schematic please ask me. Thanks in advance, EI3KI
I get programmable antenna Rotator http://www.ebay.ie/itm/RCA-VH126R-A...177?pt=LH_DefaultDomain_0&hash=item3f2612cdc1 and its working perfect with my lightweight 2el 2band Moxon antenna. I have programmed it for every 30 degrees, but I want to put this Control unit in the new box with azimuthal map shown on this box. Have pushbutton switches with LEDs and will put every 30 degrees also. Control unit have keypad switches, but I want to use my new switches with LED included in this switch.
The keypad have resistance about 60 Ohms between working contacts. Do I need to put resistor in series with new switches, or it will be okay without resistors??? There is AT89951 and 8-th inputs is connected straight to the keypad.
The number of memory channel is shown on separate 7 segment LED display by some letter (A, b, C, d, E, F, g, H, I, J, U, L). This channel letter is active every time (even after switching off-on). After pushing another memory button, Display starts showing new memory channel Letter and rotator turns. But I dont want to use this 7 digit LED display, because its not informative. More informative will be separate pushbutton switches with LED every 30 degrees around the azimuthal map, because they lights and shows direction. Also there is another double display which shows degrees (decimal) without last third zero, but its easy to put this zero. I will use it also.
The problem is, that I dont know how to decode every memory channel letter and make to light my pushbutton switch LED. I have tried few variants using AND logic, but my knowledge is not enough. Have browsed internet, but cant find anything useful (my English is not super also). Maybe somebody can help me and give useful schematic advice, please!
AT89951 outputs is connected to 3 separate anodes of memory LED display and double degrees LED display using n-p-n transistors. Its okay, but all 3 the same segment LEDs is connected in parallel and to the same PIC output. I have checked signals on all segments using oscilloscope, but cant find low or high there is many impulses and this impulses is changing frequency and polarity while Rotator is working. Too crazy for me
If you can help and need more info about this Control unit schematic please ask me. Thanks in advance, EI3KI