#Trs 80 serial terminal program how to#

I know it is already mentioned frequently, but doing experiments as above you can test and really see the difference for yourself.ДЇirst, how to attach the caps? I saw in someone's YouTube video (Great Scott! I think it was) where he had soldered the cap to the top part of the nRF board, I mean where the stub of the header pokes through the board, where you would be soldering to attach the header, opposite side of where you would attach your dupont cables.

I want to talk about decoupling capacitors. Even if you are not an expert, you can do the same and get a much better result.ДЇor me, I feel like I am finally making some progress (instead of throwing darts in the dark)!ДЄ few other little details. And by doing so, I have been able to learn quite a lot about radio propagation, electronics (ideal decoupling capacitor values), as well as things particular to my own site conditions here. Now, I am no where nearly as talented in electronics and radios as some of the guys on this forum, however I do know how to follow basic scientific principles and do experiments.

Took some effort to align plane of receiving antennae face to face. Antenna in vertical plane, face toward dining room table.ДЈ. A lot of interference from me moving my chair/body(?) in between and banging tools on theДў. ferrite choke on USB power cable to computerДЎ. On top of both CPU towers, then plastic boxД¤. floor by front door (previous door switch radio location)Д¦. | TN | SL | RL | STC | SC | SCL | RTC | RC | RCL | LR | LT | R % | ARTD | N | I then plug these results into a table in Orgmode in Emacs, carefully accounting for each variable I thought might be relevant: |-+-+-+-+-+-+-+-+-+-+-+-+-+-| calculate test1-trimmed which would return something like: Lines of Response: 801 I save it as calculate, make it executable ( $ chmod +x calculate) and then execute it with the name of the filename to process like $. Printf 'Average Round Trip Delay (ARTD): %.2f ' '$artd' Printf 'Lines Total: %s ' '$lines_total' Printf 'Lines of Response: %s ' '$lines_response' Percent=$(echo '100 * $lines_response / $lines_total' | bc -l)ДЄrtd=$(grep 'round-trip delay: ' '$1' | rev | cut -c -2 | rev | awk '' ) Lines_response=$(grep 'Got response' '$1' | wc -l) Now that I have a 'trimmed' file containing only lines of results, I wrote a small bash script to calculate some things from there a little more easily: #!/bin/bash Now sending 97432.ok.Got response 97432, round-trip delay: 23 Now sending 96408.ok.Got response 96408, round-trip delay: 23 Now sending 95205.ok.Failed, response timed out. Now sending 94170.ok.Got response 94170, round-trip delay: 34 Now sending 93139.ok.Got response 93139, round-trip delay: 29 So we end up with only result lines like the following: Now sending 92111.ok.Got response 92111, round-trip delay: 28 I then make a copy of the file and call it test-trimmed, which I then edit by hand to remove header lines at top and also the lines like '*** CHANGING TO TRANSMIT ROLE - PRESS 'R' TO SWITCH BACK $ platformio device monitor -b 115200 -p /dev/ttyUSB | tee test

I am also on GNU/Linux, so I collected my data with a simple tee command on the output of pio device monitor, like so: I only mention it because that is the serial monitor command you will see below. In fact, I think I will be flashing this first on all new radio nodes, to test my soldering / assembly, as well as positioning of the node initially, etc.ДЄs an aside, I also started using PlatformIO recently, I personally find it much less confusing than the official Arduino IDE (and now I can use a real editor! ). If you are having radio trouble (or reliability trouble in general), I highly recommend starting out with the PingPong sketch, aka GettingStarted.ino example in the RF24 library. The biggest leap forward for me was learning about the PingPong sketch, and using it to implement evidence based testing. Finally some progress the last couple days. Like many, I struggled for a long time to get things working reliably.

Trs-80 serial terminal program