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Boost Your Meshtastic Heltec V3: Upgrade Bluetooth Range
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- Опубликовано: 8 май 2024
- The bluetooth range in the Heltec V3 meshtastic device is terrible! This is how to fix it.
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Bringing Ham Radio Techniques to Meshtastic!
I've already got a Yagi antenna I want to play with for meshtastic. Get some real long range mesh networks set up.
That’s my next antenna will be a yagi to see how far I can get
Yeah brother!
My Meshtastic node is in the roof with a short run of coax to a 15 element commercial beam. I am seeing nodes upto 100klms away.
Yeah I need to get a beam too
Wouldn't it have been easier to pull the spool to make it straight, and then cut it to the right length? I used this technique to improve the short radio antenna supplied with the esp32 module, the reception improved a lot
maybe?
I've not used any of my Heltec V3s any further than just 10 feet or so from my phone or tablet, but I have a RAKwireless WisBlock in my upstairs and I use it with my phone when I'm downstairs and on the opposite of my home, and it works perfectly. I guess those little WisBock antennas must be significantly better. This is a great idea. Thanks for the video.
most people cut it at 32mm but if it works it works
Thank you Hayden, I now have something extra to do on the weekend
As some have already pointed out in the comments, you can straighten out the existing coil and cut to the right size.. but I replaced with a slightly thicker wire as it was just easier and kept the coil as is.. I don't mind it sticking out of the case as it will be installed up in a box on the roof anyway
Has anyone tried using a NanoVNA to analyse this? I just got my LiteVNA in the post but I am "Level 0" right now.
How long was the original coil? Couldn't the straight wire be hidden in the case as it's rather impractical to have it sticking out of the case that prevents it slipping into ones pocket?
Probably could've yeah
Yes by all means. This is a pretty common mod to 2.4ghz radio controlled micro quadcopters. You can use insulated stranded wire. The length can be anywhere between 29mm to 33mm and it will still work just fine. I like 30 myself. Cut it to 40mm, strip about 5mm, tin the end, cut off all but about 2mm of the tinned end, push it through the hole in the board and solder it on. Measure what’s left. If it’s between 29 and 33, you can leave it or trim it. If it’s longer trim it to where you want it. Fold the wire down parallel to the screen and enjoy. Just be sure there is room in whatever case you’re using. You could also solder it to the back of the board if it fits snug around the screen.
Can an IPEX connection be added instead? I'm working on making an aluminum case and will have to install an external antenna.
Yes make more Meshtastic videos please
For those without the skills or equipment would it be possible to stretch the wire so its either:
1. Still curled but stretched out to be a bit taller within the case?
2. Straightened and bent to fit within the case?
Nice work, tnx Man!
Will have to invest in one now! What loRa band is best?
Would you recommend the heltec as a good starter kit, or would something else be better?
I've been playing with it and can reach other nodes several km away just with the small whip antenna, so yeah I'd say it's a good starter. I'm sure there are better though out there.
Thanks for the input, I went on aliexpress to go looking for one and my head started spinning at all the different choices.
I would recommend this as a good starter. It's an excellent unit and has achieved reception of nearby nodes with an SNR-18.9
@@HamRadioDX Are the other nodes Heltec V3 with the same antenna? I assume not, as I can only get 100m or so between them.
There are a couple of V3's, but I suspect they are running outside on antennas. Mine is still inside with some limited testing outside. I still show about 12 nodes inside... but messages are inconsistent due to the low signal
Why didn't you just stretch out the existing one and cut to size?
could've done
it would have snapped trust me i know
It's pretty thin.
Well mine snapped as it's work hardened when it's coiled
It's a coil antenna. It's going to have different properties to a straight antenna.
That and straightening that thin of wire is bound to break it.
Instead of removing the little coil could a person just connect a piece of copper write around 30mm long?
If you left the coil in place, then that would increase the antenna length and it would not work
@@HamRadioDX Use a shorter wire? I dunno
I find it easier to not use the bluetooth and use the wifi instead.
I tried the WiFi but couldn’t get it to work all that well..
I might need to try it again
Its a dud… had the same problem sent it back got a new one much stronger and better
"2 & a half thousand kilometers & can prove it by visiting this link here"... where? you daft dag, where's the link?!
The end cards that pop up