AI-Enhanced TI-84 Plus Calculator Build

@MuhammadUzair16

Hi, I am an embedded systems engineer with over 16 years of experience developing connected devices, camera systems, custom firmware, and complete consumer-grade products from concept through production. I can build and validate the TI-84 Plus modification using the XIAO ESP32-S3 Sense and OV5640—not an ESP32-C3 adaptation—and deliver the ESP32 firmware, calculator software, wiring documentation, configuration portal, recovery instructions, and assembled unit. I will follow the TI84-AI architecture, first proving the camera, PSRAM/JPEG pipeline, Wi-Fi/OpenAI requests, and bidirectional link-port communication on the bench. I will then verify voltage levels and power/current margins before installation, implement scrollable responses and useful error handling, and test the exact 5 -> STOP -> ALPHA -> C -> ENTER / Send( launcher workflow on real hardware. Reset, battery removal, reconnection, autofocus, equation readability, serviceability, and safe internal mounting will also be covered. My bid is above the listed range because this is a substantial hardware, firmware, mechanical integration, and testing assignment; however, I am flexible after confirming what hardware is supplied. Will you provide the TI-84 Plus, ESP32-S3 Sense, OV5640, and shipping costs? Please contact me to discuss details.

@shrec

Hi there, I can help build this TI-84 Plus + ESP32-S3 system from the ESP32 firmware through the calculator-side software and final hardware integration. The architecture is clear: OV5640 capture and JPEG processing on the ESP32-S3, Wi-Fi/HTTPS communication with the OpenAI API, and reliable two-way communication with the TI-84 through the existing link port. I’d start from the TI84-AI reference implementation, then adapt and validate it specifically for the ESP32-S3 and OV5640 rather than assuming ESP32-C3 compatibility. I’ll also verify the link-port electrical characteristics and power requirements before any permanent soldering. The exact launcher sequence, RAM-reset behavior, Wi-Fi recovery, long-response handling, camera readability, and final physical installation would all be tested on the actual hardware. I’ll provide the firmware, TI-84 program source, wiring documentation, configuration instructions, troubleshooting guide, and reproducible build setup. Best, Ivane

@hamzazayyad

Hello, I can build and integrate the TI-84 Plus AI calculator using the specified XIAO ESP32-S3 Sense, OV5640 autofocus camera, Wi-Fi, OpenAI API, and TI-84 Link Port communication. I will use the existing TI84-AI project as the primary reference and adapt it specifically for the ESP32-S3 + OV5640 + TI-84 Plus architecture, rather than using an ESP32-C3 tutorial. My work will include: • ESP32-S3 firmware and OV5640 camera integration • JPEG capture, image processing and OpenAI API communication • Wi-Fi configuration/reconnection and secure API-key configuration • TI-84 Link Port communication for commands, text, camera requests and responses • TI-84 AI program with scrolling and error handling • Implementation/testing of the required launcher sequence • Power and signal-level verification before internal wiring • RAM reset, power-cycle, Wi-Fi recovery and camera testing • Final internal installation while maintaining normal calculator operation • Complete source code, wiring/pin documentation and setup/troubleshooting instructions I have extensive embedded development experience with ESP32, STM32, UART/SPI/I2C, networking, hardware integration and firmware debugging. I will test each stage separately before final assembly to reduce risk to the TI-84. The existing reference implementation significantly reduces development time, making the project achievable within the proposed budget. Best regards, Hamza

@BarryCrouch

Hello, I’d structure this as three isolated layers: TI-84 link protocol/UI, ESP32-S3 firmware, and camera/network/AI services. That keeps the calculator communication stable while camera resolution, model choice, Wi-Fi, and API behavior remain configurable independently. I’d use the supplied TI84-AI project as the starting reference, then adapt its build target and pin/protocol assumptions specifically for the XIAO ESP32-S3 Sense and OV5640. Hardware validation would come before soldering, followed by bench testing, end-to-end image requests, long text responses, error handling, and only then final internal mounting. Which exact TI-84 Plus hardware revision and XIAO ESP32-S3 Sense/camera board revision do you already have? Share those details and I can map the electrical and firmware adaptation first. Thanks

@longngoc2307

==== Hi - Truong here ==== "TI-84 PLUS + ESP32-S3 + OV5640 AI CALCULATOR" — you need the S3 camera, OpenAI link, TI-84 communication, and exact launcher sequence working together. I’d validate the ESP32-S3 power and TI-84 link levels before soldering, then build and test the camera/API path separately before integrating it. The reset and launcher tests matter too, since the AI must survive TI-84 RAM resets without breaking normal calculator use. Which exact TI-84 Plus board revision and XIAO ESP32-S3 Sense version do you have? Looking forward to work with you.

@albertc1996

Hi, I have hands-on experience working with ESP32/ESP32-S3 boards, camera modules, Arduino/embedded development, and hardware troubleshooting, including working with ESP32 camera setups and OV-series camera modules. This makes the hardware side of this project particularly relevant to my experience. I can adapt the existing TI84-AI project specifically for the XIAO ESP32-S3 Sense + OV5640, starting with the camera, Wi-Fi and OpenAI communication, then implementing the TI-84 link-port communication and calculator-side interface. I’ll test the launcher, resets, power behavior, and complete system before final assembly. I’ll also provide the firmware, TI-84 source, wiring documentation, configuration instructions, and troubleshooting/recovery guide.

@electronicsdone

Dear Client, Yes—this is feasible, but I would validate the TI-84 link-port electrical behavior and power budget before modifying the calculator. The ESP32-S3 + OV5640 can work well here, but voltage levels, startup current, camera placement and reset behavior must be proven on the TI-84 hardware. PCB Must Innovations brings 30+ years of electronics experience across ESP32-S3, embedded hardware, camera interfaces, low-power design, serial communication, PCB integration and prototype validation. I can own the TI-84↔ESP32 interface, XIAO ESP32-S3 Sense integration, OV5640 setup, power architecture, launcher behavior, reset/recovery testing and final assembly documentation. The amateur trap is getting the demo working once and discovering later that a RAM reset, battery removal or Wi-Fi drop breaks everything. Haha, the calculator should solve problems—not become one. I’m happy to offer a free consultation first so we can review the TI84-AI reference and confirm the exact calculator board revision before any soldering. One question: do you already have the exact TI-84 Plus hardware revision and a working unit available for modification? Message me with that detail and I’ll outline the safest build/test sequence before you commit. You’ll get a tested, serviceable build—not a one-time demo. Kind Regards Prat PCB Must Innovations

@mcollinscalz

Hi there, I am interested in implementing your custom TI-84 Plus modification, integrating an ESP32-S3, OV5640 5MP camera, and OpenAI vision interface, is a high-precision hardware/firmware build that fits my core domain. I specialize in embedded hardware mods, low-level link-port protocols, and custom ESP32/TI-Basic firmware integrations. How I Will Execute Your Build: Firmware Adaption & Porting: Port the ivan-grebe/ti84-ai codebase natively to PlatformIO for ESP32-S3 Sense, optimizing PSRAM allocation for OV5640 5MP JPEG encoding and Base64 stream buffer management. Link-Port Communication & Assembly Launcher: Implement the 2.5mm Tip/Ring serial protocol on D0/D1. I will program and verify the exact required assembly/TI-Basic launcher sequence (5 -> STOP -> ALPHA -> C -> ENTER, 2nd -> CATALOG -> LN -> Send( -> ALPHA -> C -> ENTER) so the PRGM menu retains persistence across RAM resets. Hardware Integration & Power Distribution: Safely mount the OV5640 with an optimized optical window, verify power rails (isolating voltage spikes to protect the TI-84 mainboard), and fully enclose the unit with zero exposed wiring. Deliverables: Fully modified TI-84 Plus unit, PlatformIO ESP32-S3 source code, TI-84 Assembly/Basic source files, wiring schematics, and a complete configuration/testing video walkthrough. Ready to start as soon as we connect!

@ayesha86664

Hi there! You need a careful hardware and firmware build that combines the TI-84 Plus, ESP32-S3, OV5640 camera, Wi-Fi, and OpenAI without affecting normal calculator operation. The main challenge is getting the link-port communication, power system, camera pipeline, and exact launcher sequence working reliably together. I have experience with Python, embedded systems, firmware development, image processing, circuit integration, API communication, and hardware testing. I understand the importance of verifying voltage levels, power requirements, pin mapping, memory usage, and ESP32-S3 compatibility before making permanent modifications. I will first validate the ESP32-S3, camera, Wi-Fi, OpenAI communication, and TI84-AI reference implementation separately. Then I will integrate the link-port communication, optimize JPEG and PSRAM usage, implement configuration and error handling, and test the launcher and reset behavior on the actual calculator before final assembly. check our work https://www.freelancer.com/u/ayesha86664 Can you provide the TI-84 Plus board revision and the exact XIAO ESP32-S3 Sense variant you have? Let me know if you’re interested & we can discuss it. Best Regards Ayesha

@melopgabriel

Hi, this TI-84 Plus + ESP32-S3 + OV5640 build is a tightly integrated hardware, firmware, and calculator UI project. I understand the goal: keep the calculator fully usable while adding camera-based AI, Wi‑Fi, and reliable link-port control. I’ve built embedded systems that combine custom wiring, constrained memory, and networked firmware, and I’d approach this by first validating the TI-84 link-port behavior, then porting and adapting the TI84-AI architecture to the ESP32-S3 and OV5640. From there I’d focus on stable image capture, HTTPS/OpenAI calls, error handling, and a clean launcher path that survives resets. I’d keep the work test-driven: bench the ESP32 and camera first, then integrate with the calculator, then verify the exact launch sequence and long-response scrolling on real hardware. If you want, I’m ready to discuss the build plan and hardware constraints in detail. Best regards, Gabriel

@dataspro

Nice to talk you , After reading in detail the requirements of your project and concluding that they match my areas of knowledge and skills, I would like to introduce myself. My name is Anthony Muñoz and I am the lead engineer for DS Pro IT agency. I have worked for over 10 years in Backend and software development and have successfully done multiple jobs. It will be a pleasure to work together to make your project a reality. Please feel free to contact me. I´m looking forward to working with you. I really appreciate your time and remain attentive to any request or question. Greetings

@jeanpatrickr8

Hello, I appreciate the opportunity to bid on your project to modify the TI-84 Plus calculator with the ESP32-S3 and OV5640. I understand that you need a seamless integration that enables camera functionality, AI communication, and reliable user interactions through the existing TI-84 interface. With extensive experience in embedded systems and firmware development, I have worked on similar projects involving ESP32 microcontrollers and camera integrations. My proficiency in Python, Git, and the PlatformIO development environment aligns perfectly with your project requirements. To ensure a successful implementation, I will follow these steps: - Evaluate and adapt the existing TI84-AI project for the ESP32-S3 and OV5640, focusing on the specific hardware architecture. - Develop firmware that handles camera control, image processing, and OpenAI API communication while ensuring robust error handling. - Test the complete functionality of the modified calculator, including the exact launcher sequence and communication protocols. - Provide comprehensive documentation for hardware assembly, firmware updates, and troubleshooting. I am eager to start this project and am confident in delivering a high-quality solution that meets your specifications. Please feel free to reach out to discuss any details or questions you may have.

@arshman18

Hello, It looks like you're looking to enhance a TI-84 Plus calculator by integrating an ESP32-S3 and an OV5640 camera, allowing for AI functionality through the OpenAI API. My approach would involve carefully modifying the calculator while ensuring that all components work seamlessly together. I would start by setting up the ESP32-S3 to manage the camera and network communication, following the TI84-AI project as a foundation for the software development. My experience with embedded systems and Python will help me tackle the firmware requirements, including error handling and communication protocols between the TI-84 and ESP32. I understand the importance of maintaining the calculator's original functions while adding this innovative feature set. Best regards, Muhammad Arshman

@RusianD

Hello, I’ve carefully reviewed the requirements and believe I’m a strong fit for your Enhanced Plus Calculator build. My focus will be on reliable calculator logic, responsive input handling, and a maintainable implementation that behaves consistently on the target hardware. My plan is: Requirements: I will map the required calculations, functions, key behaviour, display states, and edge cases before implementation. Architecture: I will separate input handling, calculation logic, display rendering, and device specific functionality to keep the firmware maintainable. Calculator Engine: I will implement the required arithmetic and enhanced functions with careful handling of precision, invalid operations, overflow, and state transitions. Interface: I will integrate keypad input and display output with clear feedback and predictable controls. Firmware: I will implement the required embedded logic with attention to memory usage, timing, and hardware constraints. Testing: I will validate calculations, repeated operations, decimal handling, error states, key combinations, resets, and boundary cases. Documentation: I will keep the source organized and document the build, configuration, and important implementation details. I have experience with C, C++, embedded development, device integration, CMake, Linux, and low level system debugging. Best regards, Ruslan

@andrewkor27

Hi, I went through your complete specification, and this is much more than a simple ESP32 modification. The key is getting the TI-84 Plus + XIAO ESP32-S3 Sense + OV5640 + OpenAI working reliably as one system while keeping the calculator fully usable. I can help you build this with a proper step-by-step hardware and firmware approach. I have relevant experience with ESP32 embedded development, Wi-Fi/HTTPS API communication, camera/JPEG processing, PSRAM and memory optimization, serial/device communication, and hardware debugging. A practical example is the ESP32 camera workflow: capture image → JPEG compression → manage framebuffer/PSRAM → HTTPS API request → parse response → send clean text back to the device UI. This same architecture fits your project very well. For your project, I would use TI84-AI as the reference architecture, but adapt it specifically for the ESP32-S3 and OV5640 rather than trying to force an ESP32-C3 implementation onto different hardware. I also noticed two areas that need special attention: the TI-84 link-port electrical interface and your exact custom launcher sequence. I would test both on the real TI-84 hardware instead of making assumptions that could cause problems later. I am a talented developer and have 9+ years experiences at IT companies. And I am open to a flexible work schedule, including different time zones and hours. Let’s start immediately. Thanks

@caodx

Hello, I have strong experience in embedded systems, ESP32/STM32 firmware development, PCB debugging, hardware integration, and communication interfaces such as UART, SPI, and I2C. Your TI-84 Plus AI calculator project is very interesting and closely matches my background. I can review the TI84-AI reference project and adapt it specifically for the XIAO ESP32-S3 Sense and OV5640 camera. I have experience with Wi-Fi connectivity, HTTPS communication, REST APIs, image capture and processing, FreeRTOS-based firmware, and hardware bring-up. I can also assist with link-port communication, power verification, internal hardware integration, firmware optimization, and system testing. Before providing a final estimate, I would like to review the current hardware status, target TI-84 board revision, and any available project resources. After reviewing the requirements, I can provide a realistic development plan, timeline, and budget for the complete hardware and firmware implementation.

@Eliteinno

✋ Hi, the critical part is validating the TI-84 link-port electrical interface and adapting the existing TI84-AI communication layer correctly for the ESP32-S3 before any permanent hardware work. I’d start by reviewing the referenced project and calculator board revision, verify voltage/signaling on the 2.5 mm link port, then port the firmware to the XIAO ESP32-S3 Sense with OV5640 support. After that I’d implement camera capture, JPEG/Base64 handling, Wi-Fi recovery, configurable OpenAI requests, long-response transport, and TI-side scrolling/status handling. Do you want the final deliverable to include a physically modified calculator, or only the tested firmware, wiring plan, and TI-84 software?

@shenglin0617

Hi, I've built this exact TI-84 + ESP32-S3 + OV5640 AI calculator before. Not C3 tutorial—real S3 with PSRAM, autofocus, link-port comm. Work: - Physical install: mount ESP32-S3 Sense + OV5640 inside TI-84 shell, secure camera facing forward, route wires without pinching, verify power (measure rail capacity before soldering). - Firmware (PlatformIO/ESP-IDF): camera driver, JPEG compress, Base64, WiFiManager with auto-reconnect, OpenAI HTTPS (text + image), error handling for timeouts/auth. - TI-84 side: assembly or BASIC program for launcher sequence (5→STOP→ALPHA→C→ENTER, then 2nd→CATALOG→LN→Send(→ENTER→ALPHA→C→ENTER). PRGM menu access after. Scroll long responses. - Comm: link-port over 2.5mm jack—Tip=D0, Ring=D1 (verify voltage first!). Testing: Stage 1-7 per your spec—ESP32 standalone (WiFi/cam/API), link comm, AI text+image, launcher, reset/power cycle, final assembly. Deliverables: assembled calc, ESP32 firmware source, TI-84 program, wiring doc, config instructions, troubleshooting guide. I reference ivan-grebe's project but adapt for S3/OV5640. 3-4 weeks. Fixed price + milestones. Send schematic/pinout if you have. Ready. Regards, ShengLin Gu.

@jaroslavcaprata

Hi, I can handle the software and embedded integration for this TI-84 Plus + ESP32-S3 + OV5640 AI build, using the existing TI84-AI project as the architectural starting point rather than adapting an unrelated ESP32-C3 example. I’m comfortable with ESP32-S3 firmware, PlatformIO, Wi-Fi/HTTPS, OpenAI API integration, camera capture/JPEG processing, Base64 payloads, link-port communication, and TI-84-side command/UI logic. I would preserve the existing TI-84 functionality while adapting the firmware specifically for the XIAO ESP32-S3 Sense and OV5640, including configurable Wi-Fi/API/model settings, robust error handling, long-response scrolling, reset recovery, and the required launcher sequence. I can also document wiring, pin mappings, firmware setup, configuration, testing, recovery, and troubleshooting so the finished system remains serviceable and extendable. I’ve reviewed the required staged testing approach and would validate ESP32, camera, TI communication, AI requests, launcher behavior, and reset recovery before final assembly.