My first OpenGD77 project

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TA5AYX
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Location: Turkiye
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My first OpenGD77 project

Post by TA5AYX » Fri Mar 06, 2020 9:39 pm

Hello,
Ali Kemal TA5AYX from Turkey.
My OpenD77 project is over and I have been using it for 1 month without any problems.
I transformed it into a radioddity metal box and send cool air to this box for cooling with a turbo fan and heat sensitive sensor circuit and fan speed control depending on the heating rate. When it is cold, when the fan speed is low, it increases according to the fan speed and the heat ratio. In the box cover, two 40mm fans are controlled proportionally with the internal temperature control.
I used raspberry pi3 and put coolers on it.
I made the energy source with 12v 5 amp and also used 7.8v regulator for Opengd77 and 5v regulator for raspberry.
Except for the 220, it can work uninterruptedly with automatic switching with 12v battery behind the terminal.
I used ferrite filters in the power line and in-box cables.
I use X300 antenna and 15 meters cable 9 meters above ground level. I had the chance to use it 17 km away from my house, for now, I could not try it from farther.
Over time, I will have a chance to try from more distances.
My 2 friends can connect and use through this system.
I wrote with Google translation, sorry for the mistakes.
I will share some photos and videos from the working phase and the testing phases.
All DMR amateur radio users from Konya, Turkey greetings of love.
TA5AYX 73's.


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VK3KYY
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Location: Melbourne, Australia

Re: My first OpenGD77 project

Post by VK3KYY » Fri Mar 06, 2020 10:54 pm

Wow.

But. I could not see the GD-77. Is it inside the box ?

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TA5AYX
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Re: My first OpenGD77 project

Post by TA5AYX » Fri Mar 06, 2020 11:36 pm

VK3KYY wrote:
Fri Mar 06, 2020 10:54 pm
Wow.

But. I could not see the GD-77. Is it inside the box ?
Yes there is gd77 in the small metal box inside the case.
There is no LCD screen, keys and outer case, only body.

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VK3KYY
Posts: 7478
Joined: Sat Nov 16, 2019 3:25 am
Location: Melbourne, Australia

Re: My first OpenGD77 project

Post by VK3KYY » Sat Mar 07, 2020 2:33 am

Ah. OK.

I see you are using conduction for cooling.

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EB3AM
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Re: My first OpenGD77 project

Post by EB3AM » Mon Mar 09, 2020 3:15 pm

Cool!!

Any problem with USB issues?

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TA5AYX
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Re: My first OpenGD77 project

Post by TA5AYX » Wed Mar 11, 2020 10:36 am

EB3AM wrote:
Mon Mar 09, 2020 3:15 pm
Cool!!

Any problem with USB issues?
Thank you,
No USB problem works without problems.
Since I got it in a metal box, I connected the USB connections directly on the pcb.
I didn't use Jack for USB.
The system has been running smoothly for more than 1 month.
I tested it on 48 hours+ TG91, I didn't get any error.
I took the necessary precautions for the heat problem and it works stably.
Sorry for Google translation errors.

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TA5AYX
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Location: Turkiye
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Re: My first OpenGD77 project

Post by TA5AYX » Wed Mar 11, 2020 10:48 am

VK3KYY wrote:
Sat Mar 07, 2020 2:33 am
Ah. OK.

I see you are using conduction for cooling.
Yes, the radioddity metal body and the metal box are in contact and the heat is transmitted, and the temperature is controlled through the radioddity power transistors and the fan speed is working as much as required.

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