I just completed the first 5 production RazTrak PCB Rev C boards. I have been using the prototype PCB with my 9.2m dish for the last 6 months. I wanted to verify Rev C boards and test interest. Currently, I had small run of 50 boards but more can easily be ordered if sufficient interest exists. Software for the RazTrak will be included with the PCB's. I am writing up a detailed user-manual and parts list.
Here is my dropbox link to the RazTrack project which includes schematics and photos:
https://www.dropbox.com/sh/ogkpmushy66lvrb/AAAsLt24TXvZC_p3sLKNkMPQa?dl=0
The RazTrack controller is an add-on I/O board in conjunction with a Raspberry PI 2 becomes a complete standalone tracking system. Features include:
Moon Position
Doppler Calculations
Touch-screen LCD
Auto-tracking
On-board Real-Time-Clock for accurate time-keeping.
Rig Control of most popular rigs (using OmniRig)
US Digital A2/A2T encoder SEI bus interface (master)
Direct control of 4-channel relay modules
Direct control of 4-channel FET PWM modules (useful for speed control)
Direct access of 4-channel 16-bit A/D modules (useful for reading potentiometers)
With the addition of MABMPU PCB, other commonly available encoders, inclinometers, and digital compass devices can plug directly into the SEI bus interface of the RazTrak controller. This allows mixing and matching of encoder types on the same bus with a common interface. For example: US Digital A2T inclinometer and MAB-25/28 encoder azimuth or MPU-6050 digital level and MAB-25/28 encoders,...
Currently, the MABMPU PCB supports the following encoders:
MAB-25 / MAB-28 encoders (azimuth and/or elevation)
MPU-6050 accelerometer (inclination)
The MABMPU PCB supports a I2C-LCD to display encoder position.
The MABMPU has a pass-thru SEI bus connector to allow daisy chaining of multiple MABMPU boards and/or US Digital encoders.
No additional splitters are required.
Work in progress is being done to add the MPU-9150 digital compass.
No more need to rip apart Digital Levels to get accurate Az/El readings.
Gary N8CQ and Hugh VA3TO
Think it was here that someone was asking about securing cable run down tower.
At the time I could not think of what I had used some 40 years ago, then it came to me today...
Anyway, this is what was used, not down a tower but a drop from a second story.
https://www.instrumart.com/products/37977/keller-hu02216001-cable-hanger
73 de KG5KOG
I have a Septum feed on the bench almost finished. Info here: http://ptt-ak.com/SeptumFeed/septum.html No scalar included.
I also have a VE4MA feed made by K2AH with polarizer screws which have never been adjusted. Also needs connectors and probes, $300 plus shipping.
Photo: http://pttak.com/public/VE4MA/IMG_9424.JPGhttp://pttak.com/public/VE4MA/IMG_9425.JPGhttp://pttak.com/public/VE4MA/IMG_9426.JPG
This feed has a scalar included, but needs a large hose clamp.
73
Mike, KL6M
On Sat, 30 Jan 2016 23:58:08 -0600, KG5KOG wrote:
Sometime back I had seen an image where ~10 ft dish was using an Yaesu G-5500 controller/motor.
Reading the spec the max on time is 5 min.
Was wondering about the control software for it.
When in tracking mode is there actually a duty cycle, meaning the antenna is only repositioned every min/sec of arc where a duty cycle of the motors could be met.
Didn’t see any mention of duty cycle on the spec.
I have to throw this in, getting desperate now... WTB – from USA lower 48, I need 23cm septum feed horn.
Thanks,
73 de KG5KOG
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Moon-Net posting and subscription instructions are at http://www.nlsa.com/nets/moon-net-help.html
Sometime back I had seen an image where ~10 ft dish was using an Yaesu G-5500 controller/motor.
Reading the spec the max on time is 5 min.
Was wondering about the control software for it.
When in tracking mode is there actually a duty cycle, meaning the antenna is only repositioned every min/sec of arc where a duty cycle of the motors could be met.
Didn’t see any mention of duty cycle on the spec.
I have to throw this in, getting desperate now... WTB – from USA lower 48, I need 23cm septum feed horn.
Thanks,
73 de KG5KOG
In order to mate with an HT cable from a PSU that I have I need a C type
chassis connector. Where can I get one from in Europe, or does anyone
have one in the junk box?
Regards
Conrad PA5Y
I'm new to the list. After many years of working satellites I am now
interested in spending more time....and money exploring possibilities on
VHF/UHF and particularly EME operation. I am wondering if by swapping out
my M2 crossed yagis used for satellite operation with different antennas I
could better position myself to work both satellites and EME. I'd
appreciate any suggestions anyone might have in this regard. I don't have a
great deal of space for additional antennas or long boom yagis so I'm
looking to maximize what space I do have.
73
Rick, W2JAZ
