I’m working on a panoramic head but I will control it by the Ardunio processor platform and not with Papywizard. I have ordered the Merlin/Orion mount but I have not received it jet (I will probably get it later this week) but I’m wondering if someone have any good suggestions on the electronics needed to connect the Arduino to the Merlin/Orion head. My idea was to replace the “remote control” with my Arduino. I have read the stuff on the autopano.net wiki but Google translate is not very good and I don’t speak French.
I have seen this image: http://www.autopano.net/wiki-fr/action/ … atic1.png. It looks like I should be able to connect the Arduino instead on the MAX232 unit. It saiys that the transistors are not necessary. Can someone explain a little more why you have them and what alternative you have without the transistors?
I’m planning on presenting the project online with all hardware/software as soon as I have something up and running.
Controlling the Merin/Orion through the TTL serial line is very easy. The internal controller uses only 1 line, connected to both RD and TX of both micro-controllers (PIC16Fxxx or something).
So, as for the TTL-RS232 or TTL-BT converters, you just need to wire the RD and TX signals of your Arduino to this line, through 2x 220 Ohm resistors (if these RD/TX signals are TTL; don't connect to RS-232 levels!). From the Arduino point of view, you read/write on your serial line as usual; you just have to think that the transmission is half-duplex: once you have written a command, you have to wait for the head answer.
I'm not sure you will be able to use only one pin: once you have send all the datas for a command, you will have to switch your line in input mode; doing this, you may miss datas from the head. And you will also have to implement the serial timing on a standard IO pin (9600-8-N-1); I think using the dedicated serial port of the Arduino is muuuuch more simple.
Canon 20D + 17-40/f4 L USM + 70-200/f4 L USM + 50/f1.4 USM Merlin/Orion panohead + Papywizard on Nokia N800 and HP TC-1100
I have now finally got my Merlin mount and I did a first communication test with it last night and it was a success! Thanks for the help on how to connect it. Now I will go on and setup all the commands I need.
Thanks for the tips but the LCD and Joystick parts are already finished. I use a simple little joystick and a 128x64 graphical display. I had to do something while I waited for the Merlin mount to arrive...
Yes, I know. A designed PCB with both the Arduino and the rest of the electronics plus smaller buttons or a toutch screen would make it a lot smaller. But now I know that it is possible to get it to work and I can start to take shots with it.
I guess the retro look was a little bit accidental, but I like how it ended up
The project was suprisingly easy to implement. But in reality is it just down to three parts. 1. A display and others have already done nice libs for this. 2. Buttons, I used a shift register to shift it in but that is also easy with the arduino. 3. Communication with Merlin mount. fma38 and the other Papywizard developers have already done the hard work here on how to talk to the Merlin mount so it was just to convert it to Arduino code.
Strange i dont remember this Error i have a lot other Problems before and after but not this. :-) I have freez my work on arduino for a little time after he has blow up. My fault, not from the Code. :-)