Bluetooth adapter for kelly controllers

Get all your technical information about electric bikes here.
Post Reply
User avatar
Whitehawk   10 W

10 W
Posts: 90
Joined: Jul 05 2012 2:22am

Bluetooth adapter for kelly controllers

Post by Whitehawk » Nov 02 2018 3:01pm

Hi all,

Does someone know if a standard bluetooth adapter like HM-10 is compatible with kelly controller ?
The kelly bluetooth adapter really look like this one.. But it's 19 bucks instead of 1 on aliexpress and i already have one 😅

Thank you a lot =)
Kona Coiler mid drive 4.5kw - GNG 650w @ 24S 10Ah 45A
Giant DH Team 5kw - Lyen 12fet - Rh205s 330-420rpm @ 24S-10AH
MBS scrub predator 2013 - Dual motor 6S Sk3 6364 with sensor - HK 150A
LMX 81 - 3kw - 14S6P 18650 GA
Trampa e-mtb - e-toxx direct drive - dual 6374 170kv - 10S10P 30Q- Escape VESC6
LMX 161-H - Fox40

2WheelsMovesTheSoul   100 W

100 W
Posts: 111
Joined: Oct 17 2017 12:59pm

Re: Bluetooth adapter for kelly controllers

Post by 2WheelsMovesTheSoul » Nov 02 2018 4:40pm

Hey Whitehawk, I have one of these Kelly BT modules, I'll try to take the plastic housing off and snap a few pics of the board this weekend.

Not sure about how it communicates or the protocols, but if the board is the exact same maybe the tx and rx is the same as well.

Will post results on Monday

User avatar
eee291   10 kW

10 kW
Posts: 666
Joined: Nov 05 2015 4:35pm
Location: Austria, Burgenland: Güssing

Re: Bluetooth adapter for kelly controllers

Post by eee291 » Nov 02 2018 4:54pm

Back when the KLS Controllers were in Beta a guy wrote that he used a random eBay Bluetooth dongle with the standard Vcc Gnd Rx and Tx pins.


I've never tried this myself though, as the dongles became available shortly after.

User avatar
Whitehawk   10 W

10 W
Posts: 90
Joined: Jul 05 2012 2:22am

Re: Bluetooth adapter for kelly controllers

Post by Whitehawk » Nov 02 2018 5:43pm

I have tried my dongle but it is not detected by the kelly app on android =(
Kona Coiler mid drive 4.5kw - GNG 650w @ 24S 10Ah 45A
Giant DH Team 5kw - Lyen 12fet - Rh205s 330-420rpm @ 24S-10AH
MBS scrub predator 2013 - Dual motor 6S Sk3 6364 with sensor - HK 150A
LMX 81 - 3kw - 14S6P 18650 GA
Trampa e-mtb - e-toxx direct drive - dual 6374 170kv - 10S10P 30Q- Escape VESC6
LMX 161-H - Fox40

User avatar
eee291   10 kW

10 kW
Posts: 666
Joined: Nov 05 2015 4:35pm
Location: Austria, Burgenland: Güssing

Re: Bluetooth adapter for kelly controllers

Post by eee291 » Nov 02 2018 6:06pm

Try switching rx tx maybe? Or you didn't pair it yet.

Unlike the Bluetooth BMS app, you have to pair the dongle with the Android system first. The app reads the list of saved Bluetooth devices, it doesn't scan for new ones.

If all else fails then I guess you will have to get the Kelly dongle.

gba   1 µW

1 µW
Posts: 2
Joined: Nov 12 2018 3:08am

Re: Bluetooth adapter for kelly controllers

Post by gba » Nov 13 2018 5:02am

You can try this (change the BAUD rate of the BT module) :

viewtopic.php?f=30&t=71942&p=1424739&hilit=kls#p1424739

User avatar
Whitehawk   10 W

10 W
Posts: 90
Joined: Jul 05 2012 2:22am

Re: Bluetooth adapter for kelly controllers

Post by Whitehawk » Nov 14 2018 1:38pm

My xiaomi phone have issue with some bluetooth stuff, with another phone I succeed to pair the dongle but the kelly app do not want to connect to it, I will look at your solution gba, thanks =)
Kona Coiler mid drive 4.5kw - GNG 650w @ 24S 10Ah 45A
Giant DH Team 5kw - Lyen 12fet - Rh205s 330-420rpm @ 24S-10AH
MBS scrub predator 2013 - Dual motor 6S Sk3 6364 with sensor - HK 150A
LMX 81 - 3kw - 14S6P 18650 GA
Trampa e-mtb - e-toxx direct drive - dual 6374 170kv - 10S10P 30Q- Escape VESC6
LMX 161-H - Fox40

Post Reply