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Texas Instruments TI-84 Plus CE Python - User Manual

Texas Instruments TI-84 Plus CE Python
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Texas Instruments Incorporated 1 education.ti.com
TI-84 Plus CE Python Tello Drone
Getting Started
Tello Drone
Installation of ti_runtime and 84 Plus CE Tello modules
1. Determine if your micro:bit card is a V1 or V2. The V2 card has scallops
on the board's gold edge, while the V1 is straight. The Tello Drone only
works on a V2 board. Download and unzip the Tello .zip file to a
convenient location on your computer, such as your desktop. Locate
the 2.x.x ti-runtime.hex file.
2. Click here to watch a video on how to configure your Tello drone.
3. Connect the micro:bit to your computer using a micro USB cable. The
micro:bit will appear as a flash drive icon on the computer. Drag and
drop the 2.x.x ti-runtime.hex file to the micro:bit icon. Alternatively,
left-click on the file and use the 'Send to' command to copy from the
Tello folder to the micro:bit card. This file provides functionality
between the TI-84 Plus CE Python
and the micro:bit card. The
ti_runtime installation is a one-time process. If the micro:bit is
connected back to the PC and programmed in a different language
other than Python, such as MakeCode, the ti_runtime.hex will need to
be installed again. See additional information at the end of the
document.

Questions and Answers

  • K
    Kim CollierAug 13, 2025
    Why does my Texas Instruments TI-84 Plus CE Python Calculator controlled Tello crash and fly oddly?
    • C
      christopher42Aug 13, 2025
      If your Tello drone crashes or flies erratically, it might be due to bent propellers or interference from the propeller guards. Try replacing the propellers, paying attention to the markings and placement order. Also, you may need to perform an IMU calibration using the phone software. See the owner's manual for instructions.
  • V
    Virginia GrimesAug 16, 2025
    What to do if my Texas Instruments Calculator will not connect to the Tello drone?
    • D
      Daniel RodriguezAug 16, 2025
      If your Texas Instruments Calculator won't connect to the Tello drone, try the following: 1. Quit the program. 2. Unplug the cable from the calculator. 3. Press the reset button on the back of the microbit card and the RST button on the Grove WiFi module. 4. Reconnect the cable to the calculator and try again. Also, ensure the TX and RX pins are correctly configured for your expansion board. The default TX and RX pins for the BitMaker expansion board are P2 and P1. If using a different expansion board other than the MakerBit, you must configure different TX and RX pins unique to that board's port.
  • N
    nreidAug 20, 2025
    What to do if my Texas Instruments Calculator controlled Tello drone will not take off, and the status light is blinking red?
    • J
      Jacob McdanielAug 20, 2025
      If your Tello drone won't take off and the status light is blinking red, the suggested solution is to charge the drone battery.
  • A
    Anne HermanAug 25, 2025
    What to do if my Texas Instruments TI-84 Plus CE Python Calculator does not connect to Tello, and microbit displays an unhappy face?
    • S
      Stephanie CraigAug 25, 2025
      If the Texas Instruments Calculator doesn't connect to Tello, and the microbit displays an unhappy face, consider the following checks: * Ensure the WiFi module is in the correct port. * If present, verify that the expansion board's power switch is ON. * Confirm that all batteries are fully charged. * Check that the external battery connected to the expansion board is turned on. * Try disconnecting and reconnecting the calculator and the external battery before retrying the program.
  • R
    rgarciaAug 28, 2025
    Why is my Texas Instruments Calculator controlled Tello flight erratic even though the command status reports "COMPLETED"?
    • C
      curtisrobertsonAug 28, 2025
      If the command status reports "COMPLETED" but the Tello flight is erratic, it may be due to the lighting and floor conditions of the space. Tello uses flight vision for positioning, so a well-lit space is required. Also, the floor should not be uniform or glossy. Try moving to an area with a different floor appearance and plenty of light.
  • L
    Lauren MartinAug 31, 2025
    Why will my Texas Instruments TI-84 Plus CE Python Calculator controlled Tello not perform flips?
    • C
      Charles WilsonAug 31, 2025
      If your Tello won't perform flips, make sure the battery charge is greater than 50%.
  • C
    calderondonnaSep 4, 2025
    How to see the Tello module menus on my Texas Instruments TI-84 Plus CE Python Calculator?
    • D
      Danny WilsonSep 4, 2025
      To see the Tello module menus, use TI-Connect to transfer the module to the calculator. The menus will only appear in the editor after the `from tello import *` line has been entered.
  • J
    Jeffery JohnsonSep 7, 2025
    What to do if I don't see the Texas logo on my Texas Instruments Calculator controlled micro:bit?
    • L
      Leslie WoodsSep 8, 2025
      If you don't see the Texas logo on your micro:bit, transfer the TI_runtime file to the microbit card.

Summary

TI-Runtime and Micro:bit Installation

Micro:bit V1 vs V2 Identification

Distinguishing between micro:bit V1 and V2 hardware for Tello compatibility.

Transferring TI-Runtime to Micro:bit

Copying the ti_runtime.hex file to the micro:bit for functionality.

Transferring Calculator Module and Drone Registration

Transferring TELLO.8 xv Calculator Module

Using TI-Connect to transfer the TELLO.8xv file to the calculator.

Tello Drone Registration Process

Steps for registering the Tello drone using a mobile app.

Connecting and Configuring Tello Drone System

Hardware Connection Steps

Connecting the micro:bit, BitMaker, Grove WiFi, and calculator.

Software Configuration Steps

Setting up the Tello drone and calculator for programming.

Creating Your First Python Tello Program

Python Program Creation Steps

Creating a new program, importing modules, and accessing drone commands.

Flight Program Structure and Execution

Implementing takeoff, movement, and program modification for flight.

Troubleshooting Common Issues

Module Menu and Connection Issues

Resolving issues with module visibility and calculator-Tello connection.

Flight and Performance Problems

Addressing erratic flight, crashes, and inability to perform actions.

Further Information

Links and references for more detailed Tello drone information.

Texas Instruments TI-84 Plus CE Python Specifications

General IconGeneral
ProgrammingTI-BASIC, Python
Operating SystemTI-OS
Display320 x 240 pixels
Memory3 MB FLASH ROM
BatteryRechargeable battery
ConnectivityUSB port
Dimensions7.5 x 3.4 inches
ProcessorZilog eZ80 processor

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