- Posts: 857
Extra inputs for Devo Tx's
05 Sep 2015 00:01 #37452
by Deal57
Deviation Devo7e 3way switch mod, A7105, NRF24L01
Devo6s 2x2 switch mod, trim mod, haptic, multimodule, A7105, NRF24L01, CC2500
Devo12e 4-in-1 with voice mod -- it speaks!!
Replied by Deal57 on topic Extra inputs for Devo Tx's
I finally completed the last modification to my external controls. The current configuration is 2 potentiometers, 1 6-position switch, 2 x 3-way switches, 1 2-way switch. The latest addition is a panel with six individual momentary switches and six LED indicators.
This panel, seen here in my prototype, was built using just SIX digital pins on the Arduino Pro Mini! The "Charlieplexing" approach took me some time to wrap my head around, but it is very functional and particularly useful since i'm already using diodes. This lets me use a short 6-conductor cable from the Arduino (or enclosure) to the switch panel, presumably allowing me to position it better on my GCS (if I ever get there!). The pots and switches run without regard to this new panel, and in Devo you can continue to mix as desired.
I've set the LEDs to come on based on the mode selected. For the momentary switches, I capture the switch pressed and set the mode value, which corresponds to a particular number of milliseconds in the PPM stream. Since the switch sets a mode, and the LEDs take action based on that mode at the same time the PPM stream is built, it seems like monitoring the PPM stream would be redundant. In any case, I've tried this with an APM flight controller and it works great.
All that being said, the functionality is terrific; the real problem now is how to package it and make it useful.
At this point I just want to find the "right" enclosure. I am thinking of a box with a USB jack, a 6-pin connector of some sort and possibly a battery or charging port. but I guess it depends on what I find. I guess it is time for that 3-D printer?
Happy flying!
This panel, seen here in my prototype, was built using just SIX digital pins on the Arduino Pro Mini! The "Charlieplexing" approach took me some time to wrap my head around, but it is very functional and particularly useful since i'm already using diodes. This lets me use a short 6-conductor cable from the Arduino (or enclosure) to the switch panel, presumably allowing me to position it better on my GCS (if I ever get there!). The pots and switches run without regard to this new panel, and in Devo you can continue to mix as desired.
I've set the LEDs to come on based on the mode selected. For the momentary switches, I capture the switch pressed and set the mode value, which corresponds to a particular number of milliseconds in the PPM stream. Since the switch sets a mode, and the LEDs take action based on that mode at the same time the PPM stream is built, it seems like monitoring the PPM stream would be redundant. In any case, I've tried this with an APM flight controller and it works great.
All that being said, the functionality is terrific; the real problem now is how to package it and make it useful.
At this point I just want to find the "right" enclosure. I am thinking of a box with a USB jack, a 6-pin connector of some sort and possibly a battery or charging port. but I guess it depends on what I find. I guess it is time for that 3-D printer?
Happy flying!
Deviation Devo7e 3way switch mod, A7105, NRF24L01
Devo6s 2x2 switch mod, trim mod, haptic, multimodule, A7105, NRF24L01, CC2500
Devo12e 4-in-1 with voice mod -- it speaks!!
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05 Sep 2015 00:31 #37453
by mwm
Do not ask me questions via PM. Ask in the forums, where I'll answer if I can.
My remotely piloted vehicle ("drone") is a yacht.
Replied by mwm on topic Extra inputs for Devo Tx's
Do not ask me questions via PM. Ask in the forums, where I'll answer if I can.
My remotely piloted vehicle ("drone") is a yacht.
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05 Sep 2015 01:36 #37455
by Epyon
Replied by Epyon on topic Extra inputs for Devo Tx's
Nice work Deal57.
Still revamping my 7e. I swapped to a Taranis 6-way switch like you. Kind of a fidgety lil POS don't you think? I really dislike the jump to low position between most switchings. Gotta work some debounce into my code.
Currently at three potentiometers, 6-way "switch", three 3-ways, one 2-way, and two momentary buttons run through the Arduino. Then two 3-ways, two momentary buttons and the standard two 2-ways hooked to the 7e itself. Heh.
Also got a 128x32 OLED working.
The audio board plan is stalled, as mine arrived DOA. Definitely still on the agenda down the road.
Still waiting on an I2C voltage current sensor which I'll stuff, along with a real time clock module and possibly a 9DOF module into the unused battery bay of my FPV monitor. Good times, good times.
Still revamping my 7e. I swapped to a Taranis 6-way switch like you. Kind of a fidgety lil POS don't you think? I really dislike the jump to low position between most switchings. Gotta work some debounce into my code.
Currently at three potentiometers, 6-way "switch", three 3-ways, one 2-way, and two momentary buttons run through the Arduino. Then two 3-ways, two momentary buttons and the standard two 2-ways hooked to the 7e itself. Heh.
Also got a 128x32 OLED working.
The audio board plan is stalled, as mine arrived DOA. Definitely still on the agenda down the road.
Still waiting on an I2C voltage current sensor which I'll stuff, along with a real time clock module and possibly a 9DOF module into the unused battery bay of my FPV monitor. Good times, good times.
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09 Sep 2015 05:50 - 09 Sep 2015 05:56 #37580
by davidwyl
thanks a lot @Epyon.
if i read the code correctly :
pot 1 ---- A1 & 5v & GND
pot2 ----A2 & 5v & GND
3way#1 ---- D2 & D3 & GND
3way#2 ----D4 & D5 & GND
ppm out ---- D10
is the connect correct??
Replied by davidwyl on topic Extra inputs for Devo Tx's
Epyon wrote: You can strip out a lot of Ian's original code, such as the dual rate stuff. Having inputs, especially analogs, active with no input can sometimes make everything go wonky.
For 2 pots and 2 3-ways, here's about all you'll need.// Devo 7e PPM input // For use with Arduino Nano V3.0 // Based on sketch by Ian Johnston // Analog pin assignments int AI_Pin_A1 = 2; // potentiometer #1 pin int AI_Pin_A2 = 3; // potentiometer #2 pin int AI_Raw_A1; // Analog In raw var - 0->1023.... int AI_Raw_A2; int A1_uS = 750; // potentiometer #1 us int A2_uS = 750; // potentiometer #2 us int sw1_uS = 750; // 3-way switch #1 us int sw2_uS = 750; // 3-way switch #2 us int Fixed_uS = 300; // PPM frame fixed LOW phase int pulseMin = 750; // pulse minimum width minus start in uS int pulseMax = 1700; // pulse maximum width in uS // Digital pin assignments int outPinPPM = 10; // PPM out int inPinD2 = 2; // 3-way switch #1 pin for position 1. Positions 1 and 3 combine for middle position. int inPinD3 = 3; // 3-way switch #1 pin for position 3 int inPinD4 = 4; // 3-way switch #2 pin for position 1 int inPinD5 = 5; // 3-way switch #2 pin for position 3 ISR(TIMER1_COMPA_vect) { ppmoutput(); // Jump to ppmoutput subroutine } void setup() { pinMode(outPinPPM, OUTPUT); // sets the digital pin as output pinMode(inPinD2, INPUT); // sets the digital pin as input digitalWrite(inPinD2, HIGH); // turn on pull-up resistor pinMode(inPinD3, INPUT); digitalWrite(inPinD3, HIGH); pinMode(inPinD4, INPUT); digitalWrite(inPinD4, HIGH); pinMode(inPinD5, INPUT); digitalWrite(inPinD5, HIGH); // Setup timer TCCR1A = B00110001; // Compare register B used in mode '3' TCCR1B = B00010010; // WGM13 and CS11 set to 1 TCCR1C = B00000000; // All set to 0 TIMSK1 = B00000010; // Interrupt on compare B TIFR1 = B00000010; // Interrupt on compare B OCR1A = 22000; // 22mS PPM output refresh OCR1B = 1000; } void ppmoutput() { // PPM output sub routine // Channel 1 - Analog 1 digitalWrite(outPinPPM, LOW); delayMicroseconds(Fixed_uS); // Hold digitalWrite(outPinPPM, HIGH); delayMicroseconds(A1_uS); // Hold for A1_uS microseconds // Channel 2 - Analog 2 digitalWrite(outPinPPM, LOW); delayMicroseconds(Fixed_uS); // Hold digitalWrite(outPinPPM, HIGH); delayMicroseconds(A2_uS); // Hold for A2_uS microseconds // Channel 3 - 3-way switch #1 digitalWrite(outPinPPM, LOW); delayMicroseconds(Fixed_uS); // Hold digitalWrite(outPinPPM, HIGH); delayMicroseconds(sw1_uS); // Hold for sw1_uS microseconds // Channel 4 - 3-way switch #2 digitalWrite(outPinPPM, LOW); delayMicroseconds(Fixed_uS); // Hold digitalWrite(outPinPPM, HIGH); delayMicroseconds(sw2_uS); // Hold for sw2_uS microseconds // Synchro pulse digitalWrite(outPinPPM, LOW); delayMicroseconds(Fixed_uS); // Hold digitalWrite(outPinPPM, HIGH); // Start Synchro pulse } void loop() { // Main loop // Read analog pins AI_Raw_A1 = analogRead(AI_Pin_A1); AI_Raw_A2 = analogRead(AI_Pin_A2); // Map analog inputs to PPM rates for each of the channels A1_uS = AI_Raw_A1 + pulseMin; A2_uS = AI_Raw_A2 + pulseMin; // Potentiometer limits if (A1_uS <= 750) A1_uS = 750; // Min if (A1_uS >= 1625) A1_uS = 1625; // Max if (A2_uS <= 750) A2_uS = 750; if (A2_uS >= 1625) A2_uS = 1625; // 3-way switch #1 if (digitalRead(inPinD2) == 0) { sw1_uS = 750; } if ((digitalRead(inPinD2) == 1) && (digitalRead(inPinD3) == 1)) { sw1_uS = 1190; // Center us, may need to adjust this } if (digitalRead(inPinD3) == 0) { sw1_uS = 1625; } // 3-way switch #2 if (digitalRead(inPinD4) == 0) { sw2_uS = 750; } if ((digitalRead(inPinD4) == 1) && (digitalRead(inPinD5) == 1)) { sw2_uS = 1190; // Center us, may need to adjust this } if (digitalRead(inPinD5) == 0) { sw2_uS = 1625; } }
122 lines of code.
thanks a lot @Epyon.
if i read the code correctly :
pot 1 ---- A1 & 5v & GND
pot2 ----A2 & 5v & GND
3way#1 ---- D2 & D3 & GND
3way#2 ----D4 & D5 & GND
ppm out ---- D10
is the connect correct??
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09 Sep 2015 06:19 - 09 Sep 2015 09:48 #37582
by Epyon
Your pots would connect to A2 & A3 as coded, but you can change it to whatever you want. Just change
int AI_Pin_A1 = 2; // potentiometer #1 pin
int AI_Pin_A2 = 3; // potentiometer #2 pin
to
int AI_Pin_A1 = 1; // potentiometer #1 pin
int AI_Pin_A2 = 2; // potentiometer #2 pin
I wouldn't use pins A4 or A5 in case you want an I2C device down the road.
Also, just for clarity, the Arduino's pins would be A0 through A7 right to left as pictured.
*EDIT
I didn't actually answer your question
Yes, your drawing is correct.
Thinking on it some more, I would hook your pots to pins A6 & A7 since they can only be used as analog.
So
int AI_Pin_A1 = 6; // potentiometer #1 pin
int AI_Pin_A2 = 7; // potentiometer #2 pin
Replied by Epyon on topic Extra inputs for Devo Tx's
davidwyl wrote: thanks a lot @Epyon.
if i read the code correctly :
pot 1 ---- A1 & 5v & GND
pot2 ----A2 & 5v & GND
3way#1 ---- D2 & D3 & GND
3way#2 ----D4 & D5 & GND
ppm out ---- D10
is the connect correct??
Your pots would connect to A2 & A3 as coded, but you can change it to whatever you want. Just change
int AI_Pin_A1 = 2; // potentiometer #1 pin
int AI_Pin_A2 = 3; // potentiometer #2 pin
to
int AI_Pin_A1 = 1; // potentiometer #1 pin
int AI_Pin_A2 = 2; // potentiometer #2 pin
I wouldn't use pins A4 or A5 in case you want an I2C device down the road.
Also, just for clarity, the Arduino's pins would be A0 through A7 right to left as pictured.
*EDIT
I didn't actually answer your question
Yes, your drawing is correct.
Thinking on it some more, I would hook your pots to pins A6 & A7 since they can only be used as analog.
So
int AI_Pin_A1 = 6; // potentiometer #1 pin
int AI_Pin_A2 = 7; // potentiometer #2 pin
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10 Sep 2015 01:42 #37616
by davidwyl
Look at the board while I drow that ugly pic
.
OK, so I will connect pot to pin 6,7.
Btw, will this code work on arduino mini also Without any modifications?
I got arduino mini & arduino nano, still haven't decide which I will use for my devo 7e.
Replied by davidwyl on topic Extra inputs for Devo Tx's
Ya u r right a0 -a7 is from right to left. Didn't sEpyon wrote: Also, just for clarity, the Arduino's pins would be A0 through A7 right to left as pictured.
*EDIT
I didn't actually answer your question
Yes, your drawing is correct.
Thinking on it some more, I would hook your pots to pins A6 & A7 since they can only be used as analog.
So
int AI_Pin_A1 = 6; // potentiometer #1 pin
int AI_Pin_A2 = 7; // potentiometer #2 pin
Look at the board while I drow that ugly pic
.OK, so I will connect pot to pin 6,7.
Btw, will this code work on arduino mini also Without any modifications?
I got arduino mini & arduino nano, still haven't decide which I will use for my devo 7e.
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10 Sep 2015 16:17 #37632
by Epyon
Replied by Epyon on topic Extra inputs for Devo Tx's
davidwyl wrote: I still playing With my arduino mini & nano.
Will play around with the pot & 3ways Switch soon.
I plan to power arduino from devo 7e main board...Do I need an on/off switch for arduino? Any disadvantage to leave it permanently connected?
(currently I'm using 2s lipo battery to power my devo 7e)
Thanks @deal57 & @epyon for all the help.
Really appreciate it...
Epyon wrote: You can get switched 5v from here..........
The pad to the left is full battery voltage, so be careful!
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11 Sep 2015 10:20 - 11 Sep 2015 10:21 #37656
by davidwyl
but i cant seem to compile it.
here is the error i got.
"collect2.exe: error: ld returned 5 exit status
Error compiling."
BTW can u explain how to use virtual channels to use that 3ways switch to control dual rate?
thanks
Replied by davidwyl on topic Extra inputs for Devo Tx's
thanks for the codeEpyon wrote: Yes, you'll need to use virtual channels.
OR, since you're only using 4 of the possible 8 PPM channels, you can change the code so the 3-way switches shows up like 6 separate 2-ways.
but i cant seem to compile it.here is the error i got.
"collect2.exe: error: ld returned 5 exit status
Error compiling."
BTW can u explain how to use virtual channels to use that 3ways switch to control dual rate?
thanks
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