
In Progress
Posted
Paid on delivery
I need a circuit design using an ESP32 microcontroller to display text on four 1-2 inch LCD screens. The screens should communicate via I2C. Requirements: - Use of ESP32 microcontroller - Circuit design for 4 I2C-connected 1-2 inch LCD screens - Text display functionality Ideal Skills and Experience: - Expertise in microcontroller programming, especially ESP32 - Experience with I2C communication and LCD interfacing - Background in circuit design and schematic creation Hi there, I'm starting a new project, I have completed the circuit for all other components but I want to add an additional labelling system to my device. I want to have 4x SSD1315 LCD's that display 3 large letter characters each. if you look at my attached picture of my CAD model I have the cutouts for the 4 screens alone with 3 holes above, I'd like to have press buttons in the holes that control what letters are displayed. firstly pressing the 2 outer buttons at the same time above each individual screen with ''unlock the display" causing it to flash twice. I would also then like each button to cycle through the Alphabet a letter at a time when pressed allowing you to display 3 separate characters in capital letters "FOH" "MON" "SRG" "MAT" etc etc. pressing the 2 outer buttons again at the same time locks the name with a single flash. these names are to be stored on the device so that when it powers back up they remain the same. im also looking for someone who can help layout the PCB to exact specifications to my CAD model and there could be oppertunity to do the same for the other parts of my circuit. thanks for your consideration.
Project ID: 39742876
19 proposals
Remote project
Active 1 day ago
Set your budget and timeframe
Get paid for your work
Outline your proposal
It's free to sign up and bid on jobs

As an individual with a decade-long journey in electrical engineering and verifiable expertise in Arduino, Circuit Design, Electrical Engineering, Electronics, Embedded Systems, Microcontroller, and PCB Layouting, I am confident that I have the experience necessary to fulfill your project needs. Having previously worked on diverse projects from power monitoring to medical devices, I have a nuanced understanding of microcontrollers and circuit design that would be beneficial in this particular design. Beyond technical knowledge, my experience also extends to successfully collaborating with clients across the globe—Msolution (Israel), eMushrif (Oman), Acorai (Sweden), dbell (USA), OperateMyBuilding (USA), YFLab (Slovenia), and Wattworker (Norway)—which has helped me strengthen my customer service skills and trained me to pay meticulous attention to client specifications. The task at hand aligns particularly well with my capabilities—end-to-end development from concept to architecture to the PCB layout—I can proficiently translate your CAD model into an accurate PCB design. My in-depth knowledge of microcontrollers and schematic creation will also enable me to design an efficient ESP32-based circuit that realizes your envisioned functionality succinctly. These attributes combined provide a potent cocktail for success that makes me eminently qualified for this role. I look forward to converting your ideas into a tactile product.
$85 USD in 1 day
4.5
4.5
19 freelancers are bidding on average $238 USD for this job

With my comprehensive background in digital motor control, analog design, electronic design and more, I possess a level of expertise that extends beyond the ESP32 microcontroller and I2C communication required for this project. From my employment experience to my freelancing work, I have consistently approached electronic design meticulously ensuring optimal functionality without compromising on lay out. By incorporating my eclectic yet intertwined skill set together with your request, I have every confidence that I can produce an astounding circuit design to your exact specifications. In particular, I have previously undertaken several projects involving LCD interfacing and micro controller programming utilizing CD resources to their full potential. But what truly sets me apart is my passion for understanding the precise needs of my clients and creating solutions that surpass their expectations. This mindset is underscored by my promise to implement "unlocking displays" functionality and incorporating flash lights when the outer buttons are pressed simultaneously through meticulous embedded system coding. Finally, I understand you seek a professional who uses PCB layout software(such as Altium) to bring your CAD models to life seamlessly.
$84 USD in 7 days
7.2
7.2

With my 8 years' experience as an electrical engineer and my proficiency in circuit and PCB design, I am confident that I can design and implement a relevant and efficient circuit using your preferred ESP32 microcontroller to realize your desired LCD text displays. My expertise in microcontroller programming, specifically with the ESP32, aligns perfectly with your project requirements. I have a solid background working with I2C communication and LCD interfacing, which will be essential for connecting four 1-2 inch screens to display text effectively. Your project, as I envision it, delves beyond mere technicalities: it examines system functionality. The ability of your device to 'unlock' the display after pressing the two outer buttons simultaneously validates the user's intention; a feature that fosters user satisfaction is what sets a great product apart from just another device. My capability to work across diverse platforms and software will also come in handy when storing the names on the device so they remain unchanged even after power cycling. In terms of PCB layout design, I've met stringent specifications before and consistently delivered quality outputs. Coupling this prowess with my knowledge in electronic mechanical engineering, designing your PCB to meet exact specifications suits me well. All in all, hiring me would guarantee you an efficient, accurate and reliable circuit for your envisioned label system. Thank you for considering my candidacy.
$55 USD in 1 day
5.5
5.5

I have more than 10 years experience in electronics hardware design and firmware development with full products prototypes . So I can do your job within a time limit with your satisfaction.
$2,980 USD in 30 days
5.0
5.0

Hello there! I am ready to undertake the project involving the design of a circuit using an ESP32 microcontroller to operate four 1-2 inch LCD screens communicating via I2C. The circuit will enable the display of three large letter characters on each LCD screen controlled by press buttons. The functionality includes unlocking the display by pressing outer buttons simultaneously, cycling through the alphabet to select letters, and locking the name display. Additionally, the names will be saved for future power-ups. I will also assist in laying out the PCB to match your CAD model specifications. Looking forward to collaborating on this exciting project! Cheers, RedBrick American Engineering
$30 USD in 1 day
3.8
3.8

Hello, I understand you need a circuit design using an ESP32 microcontroller to display text on four 1-2 inch SSD1315 LCD screens. The screens will show 3 large letter characters each and be controlled by press buttons. Pressing the outer buttons simultaneously will unlock the display, allowing cycling through the alphabet to set the desired names. Locking the display with another simultaneous press will store the names permanently. The PCB layout will match the exact specifications of your CAD model. I have the expertise in microcontroller programming, I2C communication, and PCB layout to bring your project to life. Looking forward to working with you on this exciting project! How important is it for the PCB layout to match the exact specifications of your CAD model? Best regards, STUDIO GO
$30 USD in 1 day
3.9
3.9

Hello As both an aficionado of electrical engineering and a skilled 3D modeler, I can't help but get thrilled about your project. The design you're seeking (which entails compiling text on multiple screens) resonates perfectly with my experience in Microcontroller Programming and PCB Layout. Furthermore, my firm grasp of the ESP32 microcontroller and I2C communication signified by successful projects will effectively manage the complexity of the task. In addition to meeting the main requirements, I propose some enhancements to bring value to your system. For instance, a feature that allows the device to store programmed names despite power cycles is a smart addition I can offer considering my extensive experience in Embedded Systems programming. Thanks & Regards, Sakshi
$35 USD in 71 days
3.1
3.1

Hello Sir, I am pleased to propose a solution for your circuit design project involving 4 SSD1315 LCD screens controlled by an ESP32 microcontroller. The design will allow displaying 3 large letter characters on each screen using press buttons for character selection. The functionality includes unlocking with a flash, cycling through the alphabet, locking the display, and ensuring data persistence during power cycles. Additionally, I will assist in PCB layout to match your CAD model specifications. With expertise in ESP32 programming, I2C communication, and circuit design, I am well-equipped to deliver the desired solution efficiently. Let's discuss further details to ensure a successful project completion. Could you please clarify if the PCB layout specifications should precisely match the CAD model you provided in the attachment? Warm Regards, LandMark Engineering
$100 USD in 2 days
3.2
3.2

Hello Sir I have reviewed your project description for Microcontroller LCD Circuit Design and am excited about the opportunity to contribute. With five years of experience in the field, I have worked with a variety of electrical systems and components. My expertise includes: A strong understanding of electrical engineering principles and techniques Designing, testing, and troubleshooting electrical systems Proficiency in circuit design, embedded systems, and power electronics Hands-on experience with various electrical engineering tools I am confident that my skills will be valuable to your project and am hopeful for a long-term collaboration. Thanks and regards, Harvinder
$66 USD in 2 days
3.5
3.5

With my substantial expertise in Arduino, Circuit Design, Electrical Engineering, Electronics, Microcontroller, and PCB Layout, I am confident that I possess the requisite skills to execute your project brilliantly. Having worked extensively on microcontrollers, especially with the ESP32, I am familiar with all aspects of circuit design and schematic creation. My knowledge and cmdgxf3experience also extend to I2C communication and LCD interfacing which directly aligns with your project requirements. I understand and appreciate the meticulousness necessary for requesting specific labels that can be changed using buttons on the device itself and retained even after power up. To cater to your needs effectively, not only will I create a circuit design using an ESP32 microcontroller to communicate with four 1-2 inch SSD1315 LCD screens via I2C, but also incorporate the necessary logic for alphabetic transitions by pressing buttons.
$50 USD in 1 day
2.6
2.6

Hi, I have three years of experience in ESP32 programming, I2C communication, and circuit design. I can confidently design and implement a solution that matches your exact requirements. I understand you want to integrate four SSD1315 LCD screens each displaying three large capital characters into your existing device, while also adding button controls that allow users to unlock, cycle through letters, lock selections, and retain settings after power cycles. I have successfully developed similar microcontroller-based interfaces in the past, including custom I2C display systems and input-driven control logic, so I am confident in handling both the firmware and the hardware design aspects. On the hardware side, I will provide a clear and reliable circuit design. On the firmware side, I’ll ensure smooth I2C communication with all four LCDs, efficient input handling for the buttons, visual feedback for unlocking/locking states, and non-volatile memory storage so that names persist after reboot. My goal is to deliver a robust, easy-to-use solution that feels well-integrated and production-ready. I can also provide few of my previous such projects. I am looking forward to collaborate with you.
$80 USD in 3 days
1.8
1.8

Hey Konan H. how are you? I checked your project- Microcontroller LCD Circuit Design carefully and got interested. I can help you perfectly with your project. I am skilled in Electronics, Electrical Engineering, Arduino, Circuit Design, Signal Processing, Embedded Systems, Prototyping, Microcontroller, PCB Layout and I2C. I am ready to start working right now. Looking forward to working with you. Best regards, Vasyl.
$120 USD in 3 days
0.0
0.0

Hello, Your project, combining the ESP32 microcontroller with the SSD1315 LCDs for a dynamic labeling system, is impressive. I'm ready to create a precise circuit design that ensures seamless I2C communication for each screen. I can deliver the required functionality, including button controls for character cycling, display locking, and storage of names for power-up continuity. Additionally, I will provide a meticulously laid-out PCB that matches your CAD specifications. Looking forward to collaborating on this exciting enhancement. Could you provide more details on the specific dimensions or specifications for the PCB layout to ensure everything aligns perfectly with your CAD model? Thank You, THE CALIFORNIA STUDIO
$40 USD in 1 day
0.0
0.0

We are a perfect match-Your search is over I see you need a circuit design for 4 I2C-connected 1-2 inch LCD screens using ESP32 microcontroller for text display. With my expertise in ESP32, I2C communication, and LCD interfacing, I recently completed a similar project for a client integrating multiple displays seamlessly. To complete the project successfully, we can follow these steps: 1. Understand the required text display functionality on the LCD screens. 2. Design a circuit layout integrating the ESP32 microcontroller and 4 SSD1315 LCD screens. 3. Implement the logic for button-activated cycling through letters and storing names persistently. 4. Create a user-friendly PCB layout according to your CAD model specifications. While I am new to Freelancer, I bring years of experience, ensuring punctual delivery, precise execution, and client satisfaction. I am ready to start immediately. Lets Chat.
$150 USD in 14 days
0.0
0.0

I have gone through your project description ✅ and I see exactly what you need - a circuit design using an ESP32 microcontroller for 4 I2C-connected 1-2 inch LCD screens displaying text. My expertise lies in microcontroller programming, ESP32, I2C communication, and LCD interfacing. While I am new to Freelancer, I have ample experience in similar projects off-site. View my portfolio here: [https://www.freelancer.com/u/moejoe03?frm=moejoe03&sb=t]. Excited to help make your text display seamless, professional, and exactly how you envision it. Regards, Mohammed Yusuf
$100 USD in 14 days
0.0
0.0

Hi, I can design your ESP32-based circuit with 4x SSD1315 OLEDs over I2C and 3 push buttons per screen for lock/unlock, alphabet cycling, and persistent name storage. I’ll provide: ESP32 firmware (button handling, display control, EEPROM/NVS storage). Circuit + PCB layout aligned with your CAD cutouts. Reliable, tested solution ready for prototyping. I have strong experience with ESP32, I2C displays, and PCB design, so I can deliver a clean, working design quickly. Best, Shakaib Naqvi
$50 USD in 5 days
0.0
0.0

I am an experienced PCB designer specializing in consumer electronics and radio applications. Skilled with Altium and KiCad, I will deliver a precise double-layer PCB including schematic, layout, BOM, Gerber, and assembly outputs. My focus is on accuracy, manufacturability, and on-time delivery.
$90 USD in 7 days
0.0
0.0

Quatro Barras, Brazil
Payment method verified
Member since Aug 29, 2025
$250-750 USD
₹12500-37500 INR
$30-250 CAD
₹1500-12500 INR
₹37500-75000 INR
$25-50 CAD / hour
$50-75 USD
$250-500 USD
₹75000-150000 INR
$30-250 USD
$30-250 USD
₹12500-37500 INR
₹12500-37500 INR
₹1500-12500 INR
₹12500-37500 INR
$30-250 USD
$15-25 CAD / hour
₹12500-37500 INR
₹100-400 INR / hour
₹12500-37500 INR