{"id":67,"date":"2015-07-31T05:01:02","date_gmt":"2015-07-31T03:01:02","guid":{"rendered":"https:\/\/pa3csg.nl\/?page_id=67"},"modified":"2024-01-02T07:29:42","modified_gmt":"2024-01-02T06:29:42","slug":"arduino-sequencer","status":"publish","type":"page","link":"https:\/\/pa3csg.nl\/?page_id=67","title":{"rendered":"Arduino sequencer"},"content":{"rendered":"

Arduino sequencer<\/h1>\n

To work together with the Arduino Power SWR meter we made a simple sequencer with the Arduino nano. It is highly flexible and easy to build on a veroboard. I decided to use open collectors for switching PA, Preamp, coax relays. The schematic can viewed below.<\/p>\n

\"sequencer-nano\" sequencer-nano<\/a><\/p>\n

Pin D6 can be connected to the Power \/ SWR meter. If the Power meter detects an alarm.
\nThis pin will go high and switch of the sequencer without delays. Delays can be
\nset in the software. These advantages and the low part count make it hard to beat by a
\n“conventional” sequencer.<\/p>\n

\"DSC_5310\"<\/p>\n

\"DSC_6282\"\"DSC_6284\"<\/p>\n

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\/*<\/code><\/div>\n
<\/div>\n
Sequencer veur Sjaek dae perse 2 processors in ein PA wiltj duuje<\/code><\/div>\n
<\/div>\n
15 mei 2015<\/code><\/div>\n
<\/div>\n
*\/<\/code><\/div>\n
<\/div>\n
\u00a0\u00a0<\/code>\/\/variables for the sequencer<\/code><\/div>\n
\u00a0\u00a0<\/code>int txgnd=2; \/\/ on pin Digital 2 PTT<\/code><\/div>\n
\u00a0\u00a0<\/code>int relay1=3; \/\/ on pin Digital 3<\/code><\/div>\n
\u00a0\u00a0<\/code>int relay2=4; \/\/ on pin Digital 4<\/code><\/div>\n
\u00a0\u00a0<\/code>int relay3=5; \/\/ on pin Digital 5<\/code><\/div>\n
\u00a0\u00a0<\/code>int alarminput = 6; \/\/on pin Digital 6<\/code><\/div>\n
\u00a0\u00a0<\/code>int alarmled = 7; \/\/ alarmled on pin 7<\/code><\/div>\n
\u00a0\u00a0<\/code>int txgndstate = 0;<\/code><\/div>\n
\u00a0\u00a0<\/code>int alarminputstate = 0;<\/code><\/div>\n
\u00a0\u00a0<\/code><\/div>\n
\u00a0\u00a0<\/code>void setup()\u00a0 {<\/code><\/div>\n
\u00a0\u00a0<\/code>\/\/setup sequencer<\/code><\/div>\n
\u00a0\u00a0<\/code><\/div>\n
\u00a0\u00a0<\/code>pinMode(relay1, OUTPUT); \/\/coaxrelay<\/code><\/div>\n
\u00a0\u00a0<\/code>pinMode(relay2, OUTPUT); \/\/Power PA<\/code><\/div>\n
\u00a0\u00a0<\/code>pinMode(relay3, OUTPUT);\u00a0 \/\/RF input relay<\/code><\/div>\n
\u00a0\u00a0<\/code>pinMode(txgnd, INPUT_PULLUP);<\/code><\/div>\n
\u00a0\u00a0<\/code>pinMode (alarminput, INPUT); \/\/ initialize alarminput as input<\/code><\/div>\n
\u00a0\u00a0<\/code>pinMode(alarmled, OUTPUT); \/\/alarmled will light in case of alarm<\/code><\/div>\n
\u00a0\u00a0<\/code><\/div>\n
\u00a0\u00a0<\/code>digitalWrite(relay1, LOW);<\/code><\/div>\n
\u00a0\u00a0<\/code>digitalWrite(relay2, LOW);<\/code><\/div>\n
\u00a0\u00a0<\/code>digitalWrite(relay3, LOW);<\/code><\/div>\n
\u00a0\u00a0<\/code>digitalWrite(alarmled, LOW);<\/code><\/div>\n
\u00a0\u00a0<\/code>digitalWrite(alarminput, LOW);<\/code><\/div>\n
\u00a0\u00a0<\/code>}<\/code><\/div>\n
\u00a0\u00a0<\/code><\/div>\n
\u00a0\u00a0<\/code><\/div>\n
\u00a0\u00a0<\/code>void loop() {<\/code><\/div>\n
Serial.begin (9600);<\/code><\/div>\n
<\/div>\n
\u00a0<\/code>\/\/ code for sequencer<\/code><\/div>\n
\u00a0<\/code><\/div>\n
txgndstate = digitalRead (txgnd);<\/code><\/div>\n
\u00a0<\/code><\/div>\n
\u00a0\u00a0\u00a0\u00a0<\/code>if (txgndstate == LOW) { \/\/ go to transmit<\/code><\/div>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/code>digitalWrite(relay1, HIGH); \/\/coaxrelay ON<\/code><\/div>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/code>delay(100); \/\/ 20 ms to let the coaxrelay switch<\/code><\/div>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/code>digitalWrite(relay2, HIGH); \/\/Power PA -ON<\/code><\/div>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/code>delay(100); \/\/ 20 ms<\/code><\/div>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/code>digitalWrite(relay3, HIGH); \/\/RF-PA ON<\/code><\/div>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/code>\/\/Serial.println<\/code><\/div>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/code><\/div>\n
\u00a0\u00a0\u00a0\u00a0<\/code>}<\/code><\/div>\n
\u00a0\u00a0<\/code><\/div>\n
\u00a0\u00a0\u00a0\u00a0<\/code>if (txgndstate == HIGH) { \/\/ go to receive<\/code><\/div>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/code>digitalWrite(relay3, LOW); \/\/RF-PA off<\/code><\/div>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/code>delay(100); \/\/ 20 ms<\/code><\/div>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/code>digitalWrite(relay2, LOW); \/\/Power PA OFF<\/code><\/div>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/code>delay(100); \/\/ 20 ms to let the coaxrelay switch<\/code><\/div>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/code>digitalWrite(relay1, LOW); \/\/coaxrelay OFF<\/code><\/div>\n
\u00a0\u00a0\u00a0\u00a0\u00a0<\/code><\/div>\n
\u00a0\u00a0\u00a0\u00a0<\/code>}<\/code><\/div>\n
\u00a0\u00a0\u00a0\u00a0<\/code><\/div>\n
\u00a0\u00a0\u00a0\u00a0<\/code><\/div>\n
\u00a0<\/code><\/div>\n
\u00a0\u00a0\u00a0<\/code>alarminputstate = digitalRead (alarminput);<\/code><\/div>\n
\u00a0\u00a0\u00a0<\/code><\/div>\n
\u00a0\u00a0\u00a0\u00a0<\/code>if (alarminputstate == HIGH) {<\/code><\/div>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/code>digitalWrite(relay3, LOW); \/\/RF-PA OFF<\/code><\/div>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/code>digitalWrite(relay2, LOW); \/\/Power PA OFF<\/code><\/div>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/code>digitalWrite(relay1, LOW); \/\/Coaxrelay OFF<\/code><\/div>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/code>digitalWrite(alarmled, HIGH); \/\/Alarmled ON<\/code><\/div>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/code>delay(10);<\/code><\/div>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/code>while(1) { } \/\/endless loop to stop<\/code><\/div>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/code><\/div>\n
\u00a0\u00a0\u00a0\u00a0<\/code>}<\/code><\/div>\n
\u00a0\u00a0\u00a0\u00a0\u00a0<\/code><\/div>\n
\u00a0\u00a0\u00a0\u00a0<\/code><\/div>\n
\u00a0\u00a0<\/code>}<\/code><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
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