Tenka ESC using an old bt module from a focbox

[glyphiks]

Tenka is just a handicapped unity. Will only work on fw5+… or unity fw

[b264]

@BillGordon

the repository here on the forum

Precompiled VESC Tool Archive

Since each build of the VESC Tool is compatible with only a few particular versions of the VESC Firmware, every now and then we find ourselves searching around for a place to download a precompiled executable of one of the older versions. When faced with this situation you either have to find it by googling, ask around on the forum, or download the source code and compile it yourself. All of these take time and can turn a simple task into a real pain. To remedy this, we have decided to crowdsour…

[Vince25]

Thanks for the quick replies.

If I bootload, it stays on the 23.46 version? I tried many times to upload and it always times out.

I also tried to download the firmware without any results. I really don’t know what could be the issue. A brink vesc?

[Vince25]

that may be the issue. I will try with an older vesc tool version. thanks.

[glyphiks]

It won’t work. You need firmware 5 or above.

Also have you tried connecting via usb? Or has that been castrated from the tenka as well?

Bluetooth firmware upgrades are difficult at the best of times.

[Vince25]

Yes I have tried with the USB without any results. I have tried with ackmaniac app but my esc won’t connect.

[glyphiks]

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Hi Esk8 enthusiasts, Vesc-Tool 2.04 with FW 5 support is now out and available via the Play store and VESC-Project website. THX to everyone who helped with testing, feedback and code! www.vesc-project.com Why is VESC-Tool 2.04 such a big step forward in comparison to the prior VESC-Tool? VESC-Tool now comes with support for single processor devices, controlling two motor drivers. So everyone owning a UNITY can now use VESC-Tool for configuration + enjoy plenty of new features like HFI …

These threads may help

[jaykup]

+1 on the second link

Sometimes the VESC tool won’t upload the firmware, and I’ve had to use one a ST-Link to manually upload it.

Amazon.com: HiLetgo ST-Link V2 Emulator Downloader Programmer STM32F103C8T6 STM8...

[Vince25]

So, the problem is the bootloader? I just want to make sure. I keep on getting timed out when I want to upgrade the firmware.

Grrrrr.

[Kai]

jpo tenka ya money. ive never seen so many threads on problems with any other esc.

[jaykup]

The Tenka is made by a guy who is known for ripping people off and making low quality stuff… so it’s possible the unit is just junk

However, I have been unable to connect to a vesc 6 with the vesc tool over usb, and loading the firmware via a stlink solved that problem.

[BillGordon]

@jaykup

The Tenka is made by a guy who is known for ripping people off and making low quality stuff… so it’s possible the unit is just junk

Yup, trash product from a garbage human.

[frame]

@jaykup

ST-Link to manually upload it

tenka is potted, OP might have a hard time just to hook it up

[Vince25]

Good to know. I will not buy again.

[jaykup]

Good point, hopefully the swd port is exposed, hard to tell from this pic

[tech.shit]

The right pins are in the weird mini-dupont thing

[jaykup]

Looks like the SWD port is a black port just above the white JST connectors.

This link that glyphiks posted above should show where to plug it in, as the Unity and Tenka are basically the same thing.

Unity not booting? You are not alone! (How to fix the bootloader)

Hello! I had the pleasure of dealing with a broken bootloader for my unity. Since I got quite a few requests for this and it was not a pleasant issue to fix with non-responsive support I decided to make a guide for it. Always try to go the route of support with this first! After I tried (and failed) this initially Enertion claimed I broke the warranty. This is a BS claim (at least in the EU where I live), but proving that is another headache. There were a few guides out there, but none of them …

[Vince25]

I have manage to connect ST Link. I did all the steps but it is still at 23.26 version. When I finish uploading the firmware, the Tenka stops right away? I have to unplug and plug the battery to turn on again the tenka? Thanks.

[jaykup]

Just to be clear, this is the workflow you followed?

• Tenka connected to nothing. No battery, no motor, no USB, nothing.
• Plug in ST-Link’s 5 pins. 3.3v, SWDIO, SWCLK, RST and GND pins
• Plug in ST-Link to the computer’s USB port
• Connect using STLINK Utility. Should get a bunch of data when it connects.
• Load the “VESC_default.bin” unity firmware/bootloader file from Vedder’s github into the STLINK Utility
• Click “Target → Program & Verify” on the STLINK Utility
• Click Start. It should take a few seconds to upload. After it finishes wait 30 seconds then disconnect the STLINK from the Tenka which should power it off.
• Plug in the battery, hook up to USB and it should be the latest firmware (5.2 as of this post) in the VESC tool.

[Vince25]

IT WORKS!!! thank you a lot!