OpenLRS - thUndead's MODs v 1.5 :D

[thundead]

DISCLAIMER

This is still an open source project so may still have bugs but that's why together we can get everything sorted out and have a cheap and reliable system.

this is my first stable version.
Based on 1.10 by Melih
Thanks to Devonian for the 459 mod
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A lot of time went into this  firmware so if anyone wants to send me some Pringles and Red Bull to keep me going here is the magic button



Pringles & Red Bull Thank You list so far

- pk-surfing
- papa_lazerous
- simondale
- Melih (@ Flytron.com)
- CrashingDutchman (@ Flytron.com)

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Current Features

- NEW!!! DIVERSITY
- NEW!!! Booster Friendly TX version
- thUndead's RSSI MOD - fine tuned 3.2 to 0v rssi Vout
- In Flight Fail Safe MOD << YES YOU CAN
- 38.4Kbps Baud Rate - still looking into lowering it

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Upcoming Features - Will release one more firmware and that's it

- Smart manual hopping



INSTALLATION

!!! PLEASE DO NOT USE ARDUINO 1.0 SDK! IT will break things! use 0.22 or 0.23 instead !!!

-Load up the firmwares in Arduino and flash them accordingly.
-noob friendly guide in the works


Available FWs:

459Mhz thUndeadMOD v1.0
=http://www.multiupload.com/YZI8WTK7A0

459Mhz thUndeadMOD v1.5 - DIVERSITY
http://www.multiupload.com/W0UYR2IJDM


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DOCUMENTATION

Booster Friendly FW for TX

If you have Melih's booster you need to make BOOSTER 1 in config.h.  This changes the output power from 1 0 0 mw to 50mw which is the recommended input power for the booster.

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DIVERSITY
The Diversity algorithm uses a Master-Slave approach.
The master receives packets from the TX and the Slave RX as well so if master RX looses signal it will still get valid packets if the Slave RX still has a connection. Simple

Hardware Installation is very simple, just use a 2 wire Servo cable to supply the slave RX with GND and VCC from onw of the master RX's free servo ports or other 5V supply.

Software Installation: Just load the openLRS_RXS firmware onto the slave receiver and you are ready to go.

WARNING!
Diversity currently works if telemetry is off! Will implement a telemetry friendly version after the Holidays.

RSSI on the slave RX is still available either on pin 8 (v2 hw) or pin 9 (v1 hw)

OpenLRS Diversity	Small | Large

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RSSI: V output: min/max 0-3.2v

CALIBRATION:
uncomment Serial_RSSI in the config.h file (the RX one) and with you TX and RX ON check the outputted value in the Serial Monitor   ( going in the other room might increase the value lol ) and that should be your max RSSI output.

in the config.h change the max value accordingly:
//###### RSSI STUFF ########
//
#define RSSI_MAX 110 //turn on the RSSI debug and see what values you r getting at close range....
#define RSSI_SMOOTH  60   //increase if the Vout is still jumpy.

RSSI ON v2 BOARDS IS on CH 8 !

If the Vout is still jumpy, increase RSSI_SMOOTH and recheck your RSSI_MAX
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In Flight Fail-Safe: nothing to change/calibrate here. Simply press and release the TX button after 2 secs and your F/S values are stored. You should see the red LED on the RX blink  when FS has been saved.
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OpenLRS FACTS
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- this first stable release adds the much needed RSSI and Quick n Easy fail safe to Melih's firmware.

- Here are my conclusions about the openLRS system after some long weeks of tuning, coding and analyzing all the approaches I could think of (FHSS,manual hopping, adaptive hopping etc...)


1. Stock antennas are crap crap craptastic! Change them ASAP. My antenna mod in 2nd post.
2. thing is good for planes for >2km flights.
3. thing is crap for multi-rotors flying low when on crappy stock antennas.
4. Video is rubbish for anything Long Range related. Want more ? go for a booster.

Sorry for my pessimistic view on the system but lost too much time trying to get the best out of the hardware without much success.

 
Hope that was an interesting read, + Happy Holidays to everybody!

Cheers,
Mihai.
 

[thundead]

<<reserved>>

[Dusty]

Where can I get the openLRS hardware?

[thundead]

you can either get it from www.flytron.com (booster is in there as well) or from www.firstpersonview.co.uk

Where can I get the openLRS hardware?

[thundead]

I've got a spare v1 hardware tx if you want. you'll just have to get yourself 1 or 2 Rx modules (2 for diversity using my fw ) Drop me a PM if your interested. Cheers.

you can either get it from www.flytron.com (booster is in there as well) or from www.firstpersonview.co.uk

Where can I get the openLRS hardware?