Forum Rule: Always post complete source code & details to reproduce any issue!
Results 1 to 5 of 5

Thread: Counterfeit Teensy?

  1. #1
    Junior Member
    Join Date
    Jul 2019
    Posts
    3

    Counterfeit Teensy?

    I got a teensy 2.0 from my friend but I found it's really hard to write new firmware to it. I needs to be very lucky to 1 out 10 chances to upload the firmware successfully. It took me a week time digging out QMK source and teensy loader cli and things looks very very normal.

    Tonight I find out that, my usb got connected and disconnect repeating within seconds even with a new cable. When I look at the chip, I found it's hard to tell the IC. There's no paint on it@@ I heard it was bought from Taobao...

    Click image for larger version. 

Name:	IMG_9273.jpg 
Views:	22 
Size:	140.8 KB 
ID:	17011

    Here comes the million dollar question... Is it a counterfeit teensy?

    Code:
    00:00:46.423: HID/macos: number of devices found = 1
    00:00:46.436: HID/macos: vid=16C0, pid=0478, page=FF9C, usage=001B, ver=1.20
    00:00:46.449: Device came online, code_size = 32256
    00:00:46.460: Board is: Teensy 2.0 (ATMEGA32U4)
    00:00:46.476: File "ergodox_ez_ergodox-ez-default-layout-v1-3-4_ZPKDr.hex". 22060 bytes, 68% used
    00:00:46.488: set background IMG_ONLINE
    00:00:46.672: HID/macos: status: ok
    00:00:48.252: HID/macos: detach callback: is currently open device
    00:00:48.294: HID/macos: attach callback
    00:00:48.423: Device went offline
    00:00:48.673: HID/macos: number of devices found = 1
    00:00:48.686: HID/macos: vid=16C0, pid=0478, page=FF9C, usage=001B, ver=1.20
    00:00:48.698: Device came online, code_size = 32256
    00:00:48.709: Board is: Teensy 2.0 (ATMEGA32U4)
    00:00:48.725: File "ergodox_ez_ergodox-ez-default-layout-v1-3-4_ZPKDr.hex". 22060 bytes, 68% used
    00:00:48.737: set background IMG_ONLINE
    00:00:48.922: HID/macos: status: ok
    00:00:49.959: HID/macos: detach callback: is currently open device
    00:00:50.173: Device went offline
    00:00:50.423: HID/macos: number of devices found = 0
    00:00:50.436: HID/macos: no devices found (empty set)
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	IMG_9272.jpg 
Views:	21 
Size:	155.6 KB 
ID:	17010  

  2. #2
    Junior Member
    Join Date
    Jul 2019
    Posts
    5
    The button looks different and the layout is slightly off from the 2.0s I have... not really sure how revs pjrc produced...

  3. #3
    Senior Member PaulStoffregen's Avatar
    Join Date
    Nov 2012
    Posts
    20,337
    That's definitely a counterfeit.

  4. #4
    Junior Member
    Join Date
    Jul 2019
    Posts
    3
    😢 Thank you Paul.

  5. #5
    Junior Member
    Join Date
    Jul 2019
    Posts
    3
    Finally I got real ones from PRJC, it works perfect. Fast and stable.

    Click image for larger version. 

Name:	Screen Shot 2019-07-25 at 10.04.58 PM.jpg 
Views:	13 
Size:	130.9 KB 
ID:	17079

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •