Search found 30 matches

by kd2lh
Thu May 28, 2020 2:29 pm
Forum: Pi-Star General Support
Topic: 2 hotspots failed after upgrade to 4.1.2
Replies: 43
Views: 787

Re: 2 hotspots failed after upgrade to 4.1.2

The OLED IS attached through the /dev/ttyAMA0 port. No it isn't. That is the serial port connection from the RPi to the MMDVM hat. And again, the OLED does not use serial communications, it uses i2c. type sudo i2cdetect -y 1 And you'll see its address which should be 0x3C or maybe 0x22. The detecte...
by kd2lh
Thu May 28, 2020 12:46 am
Forum: Pi-Star General Support
Topic: 2 hotspots failed after upgrade to 4.1.2
Replies: 43
Views: 787

Re: 2 hotspots failed after upgrade to 4.1.2

The OLED is attached through /devttyAMA0 port. After the 4.1.2 update, I noticed that there are TWO of these ports listed on the configuration options list. Its been a while since I've tinkered with an OLED but I'm pretty sure /dev/ttyAMA0 is the incorrect port for an OLED, it should be set to mode...
by kd2lh
Thu May 28, 2020 12:19 am
Forum: Pi-Star General Support
Topic: 2 hotspots failed after upgrade to 4.1.2
Replies: 43
Views: 787

Re: 2 hotspots failed after upgrade to 4.1.2

One of the symptoms is that under the Radio Info window, the FW and TXCO frequency information is NOT displayed after the R4.1.2 upgrade because initialization hangs up when PiStar tries to communicate with the MMDVM modem. The resolution for me (brute force) was to shut OFF the OLED and port select...
by kd2lh
Wed May 27, 2020 11:55 pm
Forum: Pi-Star General Support
Topic: 2 hotspots failed after upgrade to 4.1.2
Replies: 43
Views: 787

Re: 2 hotspots failed after upgrade to 4.1.2

I have MMDVMHSHat and MMDVMHS-Dual Hat modem JumboSpots, and they also have failed with installation of 4.1.2 PiStar. I have Oled3 Oleds on the MMDVM modem boards. The OLED is attached through /dev/ttyAMA0 port. After the 4.1.2 update, I noticed that there are TWO of these ports listed on the config...
by kd2lh
Tue Mar 24, 2020 10:33 pm
Forum: MMDVM_HS Hat(s)
Topic: Which MMDVM Board?
Replies: 18
Views: 2023

Re: Which MMDVM Board?

Hi Phil, Yes - I read through the thread from the beginning. The voice encoding "VoCoder", sometimes known by the brand name AMBE, is a proprietary firmware based processor that is inside the radios themselves, often implemented in a dedicated chip processor for that specific task. It's not within P...
by kd2lh
Tue Mar 24, 2020 5:48 pm
Forum: MMDVM_HS Hat(s)
Topic: Which MMDVM Board?
Replies: 18
Views: 2023

Re: Which MMDVM Board?

This whole thread is interesting because I suspect that many hams that would love to experiment with digital radio like DMR, YSF, D-Star, P-25 etc are frustrated by the complexity that various products, write-ups, forums and products expose. It's hard to "get" the big picture of where each component...
by kd2lh
Thu Mar 12, 2020 2:57 pm
Forum: Raspberry Pi Foundation Hardware
Topic: Nice overview of the Raspberry Pi
Replies: 0
Views: 942

Nice overview of the Raspberry Pi

This open source publication has a nice overview and reference information on the Raspberry Pi:

https://opensource.com/sites/default/fi ... tarted.pdf
by kd2lh
Mon Mar 02, 2020 4:54 pm
Forum: Feature Requests
Topic: OpenGD77 - Repeater
Replies: 16
Views: 3099

Re: OpenGD77 - Repeater

A quick update. Things in the OpenGD77 hotspot mode are stabilizing nicely. CWID is implemented as is the "CAST" style of display of things like the node's IP address on the GD77 radio's display. I've been operating for a long time at 1 watt of output, and have just increased the node to 2 watts out...
by kd2lh
Tue Feb 25, 2020 5:26 pm
Forum: DMR Specific Support
Topic: Recent OpenGD77 Updates improve Hotspot Mode
Replies: 0
Views: 748

Recent OpenGD77 Updates improve Hotspot Mode

Recent updates (2/21/2020) to the OpenGD77 firmware by Roger Clark VK3KYY and a worldwide team have introduced a number of features, and excellent tier 2 (timeslot) support. The latest versions of the firmware are found at: https://www.opengd77.com/viewforum.php?f=13 The firmware is loaded onto the ...
by kd2lh
Tue Feb 25, 2020 5:16 pm
Forum: WiFi Setup
Topic: WiFi on Pi4B working after RC8
Replies: 0
Views: 804

WiFi on Pi4B working after RC8

After installing PiStar 4.1.0-RC8 (which also brings in a number of Debian Buster updates), the WiFi problem on my Pi 4 B was resolved.