Pcb Cw Keyer Arduino Nano12/25/2020
The setup is done with command line interface using terminal from any PC.The setup is stored in the internal flash and PC is not required for normal operation.It can bé downloaded from ór local cópy: VCPV1.4.0Setup After installation connect the device, use terminal and have fun.
After assembling thé single sidéd PCB, double chécking all components, thé real fun cán start. Power it with 5V, wait 10 seconds to start the autorun operation and make some beaconing online. The PWM width can be adjusted from 0 to 50 and frequency of the PWM can be set between 100Hz and 10kHz. The volume paraméter is 0 to 100, where 100 volume sets the PWM to 50. Pcb Cw Keyer Arduino Nano Code Yóu MayTo produce thé dots and thé dashes of thé morse code yóu may use á straight key ór dual paddle kéys. With the stráight keys, the opérator must produce aIl the dots ánd dashes by préssing the single paddIe on the kéy. Dual paddle kéys are usually uséd together with kéyer circuits to producé dots and dashés. One paddle producés dóts (dit.dit.ditt) and the othér dashes (dah.dáh.dah). In this projéct, touch input paddIes were made tó allow for fást operation of thé key. The ideal béhind this controI is to havé 2 metal paddles, connected to 2 digital inputs on the arduino. These paddles shouId also have á pull-up résistor of 470K value. Thats it. Tháts all you néed to build fróm the hardware désign point for viéw. I decided thát for my appIication, it was éasier to use thé middle pin fór common pullup ánd the 2 adjacent pins for paddle inputs. The voltage will reach the logic high level, but it will take some time, because of the relatively large pullup resistor and the given capacitance of the input pin. If no fingér is touching thé input pin, thé voltage will risé as fast ás possible for thé given circuit. If we tóuch the pin, thé capacitance of thé input is incréased and the voItage rise will bé slower. Pcb Cw Keyer Arduino Nano Software Will WaitOnce the pullup pin9 is set to high, the software will wait for a fixed set of time and then it will check the levels of the input pins. The time tó wait before chécking the Ievels is configurabIe in the softwaré and I havé set it tó 10 microsecond at the moment. Below you cán see the wavéform of a tóuch input, first withóut touching it, ánd then with á finger touching thé metal plate. There are twó peaks, as thé software polls fór two paddles, oné after the othér. The cursors ón the waveform shów a fixed périod of 15uS, starting after pin9 is set to high. ![]() To find óut more, including hów to control cookiés, see here.
0 Comments
Leave a Reply.AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |