Get in touch!

Daniel Nikolajsen

satran@danaco.se

Danaco
Östra ringvägen 36B
352 40 Växjö
Sweden

VAT SE850721273901

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FAQ

How do you reinstall the firmware?
The control board has a ESP8266 NodeMCU microprocessor with firmware. In case you accidentally deleted the firmware or need to upgrade, this is how you do…

You need to install the free software “Arduino IDE”, add drivers library for ESP8266 and then download the current firmware and flash it to the board over USB.

Here you will find a complete howto tutorial »

How can the SATRAN be controlled?

The rotator can be controlled over you WLAN with our free app “Satran Control” for android smartphones, available from Google Play.

Also the rotator has a manual built-in control that you can access via a web browser. Just setup the Satran to your wifi, then enter the given IP-address in a browser window.

As of today, there are no other know software compatible. But in the future I hope to incorporate drivers with other popular software like hamlib etc.

Why dont you sell to the US, Canada etc?

There are several reasons why we cant sell to certain countries; both legal, ethical and logistical. We apologise for this, but hope to be able to find a solution in the future.

What voltage does it require?

The SATRAN MK1 has a voltage requirement of 9 volts, but no less than 8 or higher than 10 or the circuits may be permanently damaged. The total current draw is approx 1-2 amps. 

What types of satellites can it track?

All satellites that are in LEO (“low earth orbit”) and has publicly available TLE kepler elements to be found online from CelesTrak.

What are the max antenna load?

The maximum weight that the rotator can handle depends a lot on the components, quality of the 3D-prints and the settings of the stepper drivers. Therefore its not possible to give an exact torque specification. But our tests show that approx 500grams is the maximum that the rotator can handle.

Is the SATRAN MK1 weather-proof?

The first version of the SATRAN is not completely weather-proof and is not designed for continuous outdoor use. However it can be made relatively splash-proof if you seal the housing with silicone upon assembly, but this makes it a lot harder to disassemble.

How do you initialize the rotor?

When you start the SATRAN, you need to first make sure it is completely leveled and that the azimuth is pointing north. Gently rotate the entire turntable manually until you hear a small “click” from the limit switch. There you have the starting position (0 degrees). Now bring out your compass and make sure that the antenna is pointing towards north.

When you plug in the power, you do not need to redo this process as long as it is still mounted as above. The satran initializes and moves into position when it boots up.

The red drivers get very hot, is something wrong?
The stepper drivers can get a little warm, so dont be alarmed.

If you have an IR-thermometer (an in-ear fever thermometer can sometimes work) you can point to the IC on the red stepper drivers and measure their temperature. A normal operating temperature should be around 60 degrees celcius (140 fahrenheit).

If they are even hotter or there is a high pitch noise coming from the motors, you can turn the potentiometer on the drivers only a few degrees counter-clockwise to lower their current. This needs to be done when power is disconnected!

Does the Satran have CE-marking?

No, CE does not apply. The Satran is covered by EMC Directive 1999/5/EC and Radio equipment Directive 2014/53/EU, excluding experimental equipment intended for use by licensed radio amateurs. If you do not have sufficient knowledge on radio interference, please refer from using the device.

I have no wifi, can I use my smartphone to share a hotspot?
Yes, but for the setup you will need to use an extra computer or smartphone

1. Activate hotspot on your android phone, note what WLAN name (“ssid”) and password it has
2. Connect power to the Satran
3. Connect to wifi named SATRAN_setup from your computer or extra smartphone
4. Enter 192.168.4.1 in your browser
5. Choose your hotspot name from the list, enter password, save (Satran reboots and initializes)
6. On your hotspot settings on the phone, the new Satran device appears, click on it to show its IP address
7. Open the Satran Control app and enter the IP to your settings

Now it should work directly between your smartphone and the Satran

Why is my MK1 making a whining sound?
The stepper drivers use a form of PWM (pulse width modulation) that unfortunately can sometimes resonate in the stepper motors. It is perfectly normal and a little sound is nothing to worry about.

But if the noise is very high or perhaps the stepper drivers on the control board (the two red ones) get very hot, you can lower their current by turning the small potentiometer counter-clockwise by only a few degrees. This needs to be done when power is disconnected.