I have successfully installed OrangePI 3b+RTL_SDR V4, but I'm having trouble connecting to ZRount. When I connect to the ZRount device, I select ZRount and set the IP and PORT. Although the connection is established, no vehicles pass by (-ID), and the connection drops after a while.
root@orangepi3b:~/openstint/build/src# ./openstint -r -g 40 -t 0.67 -p 5556
Detection threshold: 0.67
Listening on tcp://*:5556
Found Rafael Micro R828D tuner
RTL-SDR Blog V4 Detected
Device: Generic RTL2832U OEM (SN: 00000001)
RTL-SDR Blog V4 detected: using upconverter for HF (direct sampling disabled)
[DEBUG] Offset tuning ENABLED. Hardware freq: 4750000 Hz (target: 5000000 Hz)
RTL-SDR optimization: Using 2.5 MSPS hardware rate with 2:1 upsampler to reach 5.0 MSPS
Exact sample rate is: 2500000.107620 Hz
[DEBUG] Software mixer ENABLED. Phase step: -0.628319 rad/sample
RTL-SDR gain set to 19.7 dB
RTL-SDR RX: freq=5000000 Hz, sample_rate=5000000 Hz
Streaming... stop with Ctrl-C
S 1080 -inf 0 115 101
[DEBUG] Max correlation: 0.9408 (threshold: 0.67), DC offset: (0, 0)
S 2082 -45.361607 0 433 399
[DEBUG] Max correlation: 0.9440 (threshold: 0.67), DC offset: (0, 0)
S 3084 -45.361607 0 411 373
[DEBUG] Max correlation: 0.9312 (threshold: 0.67), DC offset: (0, 0)
S 4086 -45.361607 0 402 370
P 3153 AMB 4747720 -4.34 1312 0.55
[DEBUG] Max correlation: 0.9272 (threshold: 0.67), DC offset: (0, 0)
S 5088 -46.39358 0 81 69
[DEBUG] Max correlation: 0.9299 (threshold: 0.67), DC offset: (0, 0)
S 6090 -45.639183 0 326 297
[DEBUG] Max correlation: 0.9264 (threshold: 0.67), DC offset: (0, 0)
S 7092 -45.639183 0 400 371
[DEBUG] Max correlation: 0.9269 (threshold: 0.67), DC offset: (0, 0)
S 8094 -45.639183 0 402 366
[DEBUG] Max correlation: 0.9273 (threshold: 0.67), DC offset: (0, 0)
S 9096 -45.639183 0 402 362
[DEBUG] Max correlation: 0.9334 (threshold: 0.67), DC offset: (0, 0)
S 10098 -45.639183 0 403 365
[DEBUG] Max correlation: 0.9361 (threshold: 0.67), DC offset: (0, 0)
S 11100 -45.639183 0 400 374
[DEBUG] Max correlation: 0.9369 (threshold: 0.67), DC offset: (0, 0)
S 12102 -45.639183 0 407 369