Hello Tello Pilot!
Join our DJI Tello community & remove this banner.
Sign up

Recent content by quaddamage

  1. quaddamage

    firmware from edu to regular Tello

    Initial read: The difference between regular Tello and Tello EDU (with Photos) TLDR: HW is the same, but a person who tried just flashing EDU FW says it didn't boot the drone. He speculates the issue is in parts of the ROM not updated by FW - some kind of metadata or extra verification block...
  2. quaddamage

    Wifi Connection

    I remeber the times when contradictory statements were only acceptable in art. But yeah, times change quickly. Anyway, here you can find the LED codes listed: https://www.65drones.com/pages/tello-operation-guide# In simple terms - if not solid red, then the Movidius chip sees no issue. There...
  3. quaddamage

    One of the motors turn on as soon as battery is plugged in?!

    Good find, I haven't seen that thread. Looks reasonable.
  4. quaddamage

    One of the motors turn on as soon as battery is plugged in?!

    Ok, the original post seem to contain a very reasonable reason: There's no schematic on dji-firmware-tools wiki but they do have board photos. On one side there are the motor solder pads, "+" and "-". You expect transistors to be nearby. Look on the other side and I'm sure you can locate them...
  5. quaddamage

    Bypassing Tello Drone Battery BMS with 18650 Cells: Need Help Overcoming Low Battery Detection?

    BMS and charger (BQ24259) are on the main board. The battery seem to just have temp sensor and rudimentary overdischarge cutoff. Tello boards
  6. quaddamage

    Gamesir T1s - replacement parts

    Pretty sure some will find this useful: For replacement analog joystick module, you can use "xbox 360 joystick module". Their footprint matches, they use the same resistance for potentiometers, and they do work. I think with the metal limiter they're also a bit harder to break than what...
  7. quaddamage

    battery not charging

    Yes. You need at least 3.7 V (best is 3.8 V) of no load voltage. Even 3.9 V, if the storage is supposed to last more than half a year. In percentages, the voltage you have now is typically shown as 5% remaining battery, and the best for storage is around 50%.
  8. quaddamage

    battery not charging

    Unlike all other DJI drones, the Tello battery doesn't have a built-in BMS, therefore it does not also include li-po charger. In other words, you need to connect a li-po charger to it, rather than a power brick (aka switching power supply). Connecting it directly to 5V output would be extremely...
  9. quaddamage

    battery not charging

    All li-po batteries fail when left discharged. For Li-po batteries which are designed for large current draw, their BMS chips often stop allowing you to recharge after discharged below 3V. Simply because damaged cells = higher internal resistance = higher internal heating of the battery...
  10. quaddamage

    VPS unavailable

    Agreed. Unless it's flying. But most time it's not flying, so it's generally not sensitive to wind. Congrats on getting digger of the month badge - that was 4yo thread.
  11. quaddamage

    Fly while powered by cable

    There are SMD 5A diodes, so the cap would probably still be more noticeable. If the capabilities of the smaller board turn out to be a lie, then two such boards could be added - would still weigh less than one larger. Then the diodes would also help in merging outputs (though most likely there...
  12. quaddamage

    Fly while powered by cable

    True, if you want to keep to spec. Ie this one: 43mm * 21mm * 14mm, weight - my estimation would be 25g (found on Aliexpress, type "Adjustable DC LM2596 Buck module") But there are cheaper things to test. These are unlikely to keep to the advertised amperage for long, but may be good enough to...
  13. quaddamage

    HELP!! After updating to a new firmware I can't detect my tello's wifi.

    tried searching for the wifi host on a different mobile? you may also do a reset again after the downgrade.
  14. quaddamage

    HELP!! After updating to a new firmware I can't detect my tello's wifi.

    If the drone is blinking lights correctly and allows to downgrade the firmware correctly, then it most likely works correctly.
  15. quaddamage

    Battery Reconditioning

    1. Why it stops working From the pictures on O-Gs wiki and from my experience, it looks like the board has a voltage comparator circuit with output which allows to cut off the cells from terminals. So no intelligence, just a simple cutoff if cell voltage drops below 3V. 2. Will it starts if...
See more

New Posts