Fake FTDI Chip in Tevo Tornado Hi everyone! I recently received my Tevo Tornado. Assembly was easy and the first prints came out nicely. But when I attached an Raspberry Pi 3 and connected Octoprint to the Tornado, the USB connection got lost repeatedly after about 1 minute. I tested 4 different USB cables, compiled a new firmware with a lower baudrate (115200 instead of 250000), but nothing helped. dmesg showed one error message saying "usb_serial_generic_read_bulk_callback: -urbstopped -32" per disconnect. Then I tested the connection with Cura3 on a Windows machine. Here the connection worked without hangups. I guess the windows driver is more tolerant than the linux one.... This was when I remembered the fake FTDI chips that were in the news a few month ago. I checked the serial number, and indeed, it is one of the counterfeit chips. Today I completely disassembled the Tevo control box, took out the control board and desoldered the bad FT232RL. The genuine replacement now works flawlessly :) While I'm at it, I will also fix the horrible wiring and build a custom frame under the printer from aluminium extrusion. Hope this helps if someone has the same problems with the serial connection under linux :) https://reprap.org/forum/read.php?1,806729,806729#msg-806729 Mon, 12 Oct 2026 14:18:46 -0400 Phorum 5.2.23 https://reprap.org/forum/read.php?1,806729,806731#msg-806731 Re: Fake FTDI Chip in Tevo Tornado https://reprap.org/forum/read.php?1,806729,806731#msg-806731 www.eevblog.com]

And this site explains how to check the serial number: [www.starlino.com]

The chip I got had exactly that "A50285BI" serial.]]> kwerner General Mon, 22 Jan 2018 16:06:26 -0500 https://reprap.org/forum/read.php?1,806729,806730#msg-806730 Re: Fake FTDI Chip in Tevo Tornado https://reprap.org/forum/read.php?1,806729,806730#msg-806730
Quote
kwerner

Fake FTDI chips that were in the news a few month ago. I checked the serial number, and indeed, it is one of the counterfeit chips.

Where do I get to the information about the Fake FT232RL chips.

Thank You]]> Roberts_Clif General Mon, 22 Jan 2018 15:57:32 -0500 https://reprap.org/forum/read.php?1,806729,806729#msg-806729 Fake FTDI Chip in Tevo Tornado https://reprap.org/forum/read.php?1,806729,806729#msg-806729
I recently received my Tevo Tornado. Assembly was easy and the first prints came out nicely.

But when I attached an Raspberry Pi 3 and connected Octoprint to the Tornado, the USB connection got lost repeatedly after about 1 minute.
I tested 4 different USB cables, compiled a new firmware with a lower baudrate (115200 instead of 250000), but nothing helped.
dmesg showed one error message saying "usb_serial_generic_read_bulk_callback: -urbstopped -32" per disconnect.

Then I tested the connection with Cura3 on a Windows machine. Here the connection worked without hangups. I guess the windows driver is more tolerant than the linux one....

This was when I remembered the fake FTDI chips that were in the news a few month ago. I checked the serial number, and indeed, it is one of the counterfeit chips.

Today I completely disassembled the Tevo control box, took out the control board and desoldered the bad FT232RL. The genuine replacement now works flawlessly :)

While I'm at it, I will also fix the horrible wiring and build a custom frame under the printer from aluminium extrusion.

Hope this helps if someone has the same problems with the serial connection under linux :)]]> kwerner General Mon, 22 Jan 2018 15:39:48 -0500