Downloaded and install the driver from here http: Dave, did you cut open the converter or does it bolt together? It allows the user to send the commands from the PC’s serial port to the mount’s handpaddle DB9 port. Make sure all lines are nicely insulated and give it a test, and add some heatshrink when done. Ideal for compact USB-only mods as done by yesyes http: Not all DB-9 cables are created equal.
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If the voltage drops below the safe high level of the receiving device, communication becomes unstable.
Nice find Dave, I was looking at some usb to serial boards on ebay ego china ebay shop for a similar purpose, yours are a bit cheaper than those.
Eqqdirect 2N is a TO part so should fit in the case snugly, and the two unconnected pads along the bottom next to Tx are 3.
Pins 5 and 4 are ground pins. Also, the only thumb screw on the EQDir RS connector snapped and I’m reliant on friction to stop the plug falling out.
If your connector wiring colours are exactly the same as in these pictures, then the connections are as follows:. It is also possible that any garbage or invalid data sent to the mount could cause its firmware to generate mis-steps pulse sequences to the motors causing it to overheat.
The Shoestring Astronomy Store. Ideal for compact USB-only mods as done by yesyes http: I have tried both 3V and 5V types and can say that the with 10m of cable at the RJ45 mount end the 3V didn’t work eqcirect the 5V did.
One other option is to crimp an RJ plug on the end of the cable and secure with a small amount of glue Requires Adobe Acrobat Reader. I’m in need of making a new canon shutter release, and this might fit the bill. Sign up for a new account in our community. Therefore voltage drop over longer cable runs is much less of an issue. Do check with a multimeter before hand to make sure you have the 12v lines correctly identified.
One 2m RJ45 ethernet cable e.
The Shoestring Astronomy Store – EQ Direct Interface Products
My day job responsibilities require frequent travel. I’ve only got surface mount mosfets at the moment, which I know isn’t everyone’s cup of tea, so I’ve ordered a few 2Ns and will post back with pictures when they arrive.
It is the direction of the current that determines whether a specific bit is high or low. As a side note, the little PCBs are great for mods that need a serial interface such as webcam long exposure mods or DSLR shutter cables. However, these devices tend to be more expensive and harder to find. Or sign in with one of these services. I’m looking at using a 4N25 opto isolator directly connected between the PCB and the camera eqirect a serial shutter release for my D – I’ve tested it on the breadboard, now hopefully will be able to produce a neat end product at the end.
Now, thanks to the efforts of several individuals, far more powerful features are made available by bypassing the handcontroller and communicating directly with the mount’s stepper motor controller.
Dave, did you cut open the converter or does it bolt together? The port contains both the 12V power lines and the two TTL level serial data lines.
XAGYL Astronomy :: Cables
Sign in Already have an account? An example of what you are looking for is shown below. If its working fine for you then great – I do think however it would be good idea to provide folks with the hsb of how they might bump up the signal levels to replicate the functionality of the existing EQDirect designs even if they opt not to do it.
Not all DB-9 cables are created equal. Gnd-Gnd Rx-Tx Tx-Rx If your connector wiring colours are exactly the same as in these pictures, then the connections are as follows: Hi Dave, Nice find eqdirdct nice to see you back posting.