You will get App for ESP32/nRF Devices – Seamless Connectivity & IoT Solutions
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Top Rated
Project details
Most BLE apps fail from weak connections, battery drain, or firmware flaws. I fix these first. Here’s how:
✅ Hardware-Level Mastery
ESP32/nRF power optimization (40% less drain)
Solved "disconnection plague" with custom tuning
Built-in interference shielding
✅ Unbreakable App Core
Auto-recovery when signal drops
Handles 1000+ sensor reads/sec
Military-grade encryption standard
✅ Real-World Ready
150m+ range tested (BLE 5 Long Range)
72-hour stress tests = years of stability
Pre-certified for FCC/CE compliance
✅ Future-Proofed
Seamless OTA firmware updates
Ready for mesh networking
Dashboard/MQTT hooks pre-built
✅ Zero-Risk for You
Pay only after approving demos
30-day post-delivery guarantee
Full source + ELI5 docs
Recent Wins:
Medical wearable: 1-year battery
Warehouse tracker: 500+ devices
Auto gateway: 99.99% uptime
You Get:
My 7 years BLE battle experience
Direct Nordic/Espressif contacts
"I'll handle it" problem solving
Prototype in 5 days. No headaches.
✅ Hardware-Level Mastery
ESP32/nRF power optimization (40% less drain)
Solved "disconnection plague" with custom tuning
Built-in interference shielding
✅ Unbreakable App Core
Auto-recovery when signal drops
Handles 1000+ sensor reads/sec
Military-grade encryption standard
✅ Real-World Ready
150m+ range tested (BLE 5 Long Range)
72-hour stress tests = years of stability
Pre-certified for FCC/CE compliance
✅ Future-Proofed
Seamless OTA firmware updates
Ready for mesh networking
Dashboard/MQTT hooks pre-built
✅ Zero-Risk for You
Pay only after approving demos
30-day post-delivery guarantee
Full source + ELI5 docs
Recent Wins:
Medical wearable: 1-year battery
Warehouse tracker: 500+ devices
Auto gateway: 99.99% uptime
You Get:
My 7 years BLE battle experience
Direct Nordic/Espressif contacts
"I'll handle it" problem solving
Prototype in 5 days. No headaches.
Platform
AndroidApp Type
Native AppDevelopment Technology
Flutter, KotlinApp Purpose
Education, IoTExpertise
DesignWhat's included
| Service Tiers |
Starter
$150
|
Standard
$300
|
Advanced
$800
|
|---|---|---|---|
| Delivery Time | 3 days | 7 days | 10 days |
Number of Revisions | 3 | 5 | Unlimited |
Number of Mobile Operating Systems | 1 | 2 | 2 |
App Store Upload | - | - | - |
App Icon Design | |||
Splash Screen | - | ||
Ad Network Integration | - | - | |
Source Code | - | - |
56 reviews
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This project doesn't have any reviews.
SM
Steel M.
Jun 24, 2026
Breadboard Circuit Help
It was incredibly easy to work with Tehsinudin. He was a great explainer and executor - he was able to coach me through my breadboard and then quickly took the next steps to produce my project files. Fast communication & clear communication across all areas of the project. I will be using him again!
AN
Arshad N.
May 16, 2026
Healthcare App Development Specialist Needed
He is really the best person that i have worked with on Upwork. He finds solutions of the issues instead wasting the time
AN
Arshad N.
May 16, 2026
Embedded Firmware + IoT Engineer for Smart Dispensing Device (MVP)
Knowledgeable - Help greatly
NV
Nik V.
Mar 9, 2026
Arduino Programming for Stepper Motor Control upgrade
The Arduino Programming for Stepper Motor Control Upgrade was implemented exceptionally well and represents a significant improvement to the overall project. The upgrade greatly enhanced the precision, stability, and responsiveness of the stepper motor system, resulting in noticeably smoother and more reliable performance.
The programming approach demonstrates a strong understanding of Arduino architecture and stepper motor control logic. The code is well-structured, efficient, and easy to maintain, which will make future modifications and scalability much easier. The optimization of motor control routines and timing management clearly shows careful planning and technical competence.
Another major strength of this upgrade is the improved synchronization and accuracy in motor movement. This directly contributes to better system reliability and higher overall project quality. Additionally, the implementation reflects excellent problem-solving skills and attention to detail throughout the development process.
Overall, this upgrade adds substantial value to the project and significantly improves its technical performance. I strongly recommend Tehsinudin Wazir as it demonstrates high-quality engineering practice, reliability, and clear potential for further development and integration in advanced applications.
The programming approach demonstrates a strong understanding of Arduino architecture and stepper motor control logic. The code is well-structured, efficient, and easy to maintain, which will make future modifications and scalability much easier. The optimization of motor control routines and timing management clearly shows careful planning and technical competence.
Another major strength of this upgrade is the improved synchronization and accuracy in motor movement. This directly contributes to better system reliability and higher overall project quality. Additionally, the implementation reflects excellent problem-solving skills and attention to detail throughout the development process.
Overall, this upgrade adds substantial value to the project and significantly improves its technical performance. I strongly recommend Tehsinudin Wazir as it demonstrates high-quality engineering practice, reliability, and clear potential for further development and integration in advanced applications.
EK
Evan K.
Feb 19, 2026
optimize arduino code
my code is finished
About Tehsinudin
Embedded Systems Expert in nRF, BLE, ESP32, PCB, TinyML, Arduino,RPi
100%
Job Success
Islamabad, Pakistan - 9:41 am local time
Your Trusted Partner for End-to-End Embedded Solutions: Delivering Production-Ready Hardware and AI-Integrated Systems in Weeks, Not Months. With 5+ Years of Expertise and 50+ Successful Projects in Wearable Tech, Industrial IoT, and Custom PCB Design.
**100% Job Success Score | Same-Day Response Guarantee **
My core expertise includes:
- Custom PCB Design & Rapid Prototyping
- Wearable Technology Development (Medical Devices, Fitness Trackers, Smart Textiles)
- Low-Power Firmware Development (C/C++/Python) for ESP32, STM32, Raspberry Pi, nRF52840
- TinyML & Edge AI on Microcontrollers (TensorFlow Lite, Edge Impulse, Scikit-learn)
- Industrial IoT & Wireless Connectivity (BLE, LoRa, Zigbee, Cellular)
- Cloud Integration & Data Management (AWS IoT, Google Cloud, MQTT, REST APIs)
I don't just code—I architect scalable, energy-efficient, intelligent embedded systems that drive real business value.
💡 What I Deliver: Comprehensive Full-Cycle Development
✅ 1. Wearable Technology & Medical Devices
- FDA-Compliant Wearables (ECG Monitors, Fitness Trackers, Thermoelectric Coolers, Health Sensors)
- Ultra-Low Power Optimization for 3x Extended Battery Life
- Flexible PCB Designs for Comfortable, Durable, Wrist-Worn Devices
- Biomedical Signal Processing with Real-Time Analytics and AI Integration
✅ 2. End-to-End IoT Solutions
From Single-Node Sensors to Scalable Networks:
- Firmware in C/C++/Python (Bare-Metal, RTOS, Linux-Based)
- Secure Cloud Connectivity (AWS IoT, MQTT, WebSockets)
- Custom Real-Time Dashboards for Data Visualization (Grafana, InfluxDB)
✅ 3. Custom PCB Design & Prototyping
High-Performance, Manufacturable PCBs Tailored for:
- Low-Power Wearables and Medical Devices
- Industrial Sensor Nodes with IP67/IP68 Ratings
- RF/Wireless Systems (BLE, LoRa, Cellular)
Tools: Altium Designer, KiCad, Eagle, Fusion 360
Capabilities:
- Multi-Layer Designs (4+ Layers) with Impedance Control
- DFM/DFA Optimization for Seamless Mass Production
- Rapid Prototyping via 3D Printing and CNC Milling
✅ 4. TinyML & Edge AI Deployment
Machine Learning on Resource-Constrained Devices for:
- Predictive Maintenance (Vibration, Thermal Anomaly Detection)
- Smart Sensors (Voice Recognition, Motion Tracking, Environmental Monitoring, Biometrics)
- AI-Enhanced Wearables for Real-Time Health and Fitness Analysis
Tech Stack: TensorFlow Lite, PyTorch, Edge Impulse, Scikit-learn
✅ 5. Python for Embedded Systems
Leveraging Python Beyond Firmware:
- AI/ML Model Training & Deployment (TensorFlow, PyTorch)
- Automated Testing Frameworks (PyTest, Robot Framework)
- Data Analysis & Visualization (Pandas, Matplotlib)
- Medical Device Validation and Clinical Testing Protocols
🚀 Proven Project Portfolio: From Concept to Market Launch
🏆 AI-Powered Sports Tracker (TinyML + ESP32) | $12,000 Budget
Challenge: Accurate Real-Time Swing Analysis for Baseball Training
Solution: Deployed CNN Model on ESP32 with 98% Accuracy and IR Beam Detection Integration
Impact: Accelerated Product Launch by 3 Months, Boosting Client Competitiveness
🏆 Thermoelectric Wrist Cooler (Wearable Tech + PCB Design)
Challenge: Efficient Cooling in Compact, Low-Power Form Factor
Solution: nRF52840 MCU with Peltier Module, Custom Flexible PCB, and Thermal Management
Impact: Extended Battery Life by 200%, Enabling All-Day Comfort for Users
🛠️ Technical Stack
- Hardware: ESP32, Arduino, STM32 (U5/H7/F4), nRF52840, Raspberry Pi
- Software: C/C++, Python (Embedded & ML), Rust
- AI/ML: TensorFlow Lite, PyTorch, Edge Impulse, Scikit-learn
- Cloud: AWS IoT Core, Google Cloud IoT, InfluxDB, Grafana
- PCB Tools: Altium Designer, KiCad, Fusion 360, LTspice
🌟 Why Clients Choose Me for Embedded Systems, IoT, and Wearable Projects
⚡ One-Stop Solution Provider
- Eliminate the Need for Multiple Specialists: I Handle Schematic Design, PCB Layout, Firmware, AI Integration, Cloud Setup, and Mobile Apps
⚡ Demonstrated Reliability
- 100% On-Time Delivery Across 50+ Projects
- Zero Failed Prototypes Through Rigorous Simulations and Testing
- Clean, Documented Code with Git Version Control for Easy Maintenance
⚡ Exceptional Communication & Support
- Same-Day Responses (Within 6 Hours)
- Weekly Milestone Reviews with Video Demos and Progress Reports
- Comprehensive Technical Documentation Included
- 90-Day Post-Delivery Warranty with Ongoing Consultation
🔥 Ready to Bring Your Embedded Vision to Life?
Schedule a FREE 30-Minute Strategy Session Today, Including:
-Technical Feasibility and Risk Assessment
-Customized Timeline with Milestone Deliverables
-Tailored Technology Stack Recommendations
-Cost-Saving Strategies and ROI Projections
Available Now for New Projects—Guaranteed Working Prototype in 2-3 Weeks.
👉 Click "Invite to Job" or Message Me to Get Started!
Steps for completing your project
After purchasing the project, send requirements so Tehsinudin can start the project.
Delivery time starts when Tehsinudin receives requirements from you.
Tehsinudin works on your project following the steps below.
Revisions may occur after the delivery date.
Plan & Scope
Discuss needs, finalize features, and agree on timelines.
BLE Setup
Configure ESP32/nRF hardware and test basic connectivity.