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Sheeba D.
Calicut, India
IoT Consulting, IoT solution development, IoT Prototype development, IoT Minimum Viable Product ( MVP ) development since 2014.
100+ IoT projects completed
Served clients from over 20 countries
Over 30000 hours in IoT projects
With over a decade of experience and a proven track record of delivering 100+ successful IoT projects, we're your partners in innovation.
Our team of IoT enthusiasts, embedded engineers, and web/mobile app developers has successfully transformed complex ideas into tangible IoT solutions across diverse industries. We have helped clients optimize operations, reduce costs, and drive growth in a variety of industries.
Sensorvision IoT Platform: Our customizable platform excels in device management and data visualization, providing actionable insights.
We specialize in IoT Development with the following technologies - ESP32, LoRa, LoRaWAN, BLE, Particle, Mobile app development with React Native
IoT use cases - IoT enabled product development, Energy monitoring and management, High value asset monitoring and tracking, Industrial condition monitoring, Smart farming, Hydroponics, Irrigation control, IoT building automation, Smart garments, Rule-based alert systems
The IoT applications we have developed used:
Hardware platforms used –
Particle (Electron, Argon, Boron, Xenon)
ESP(ESP8266, ESP32)
STM 32
nRF 52
Arduino
Raspberry Pi,
ATmega and ARM
Pycom Controllers
Communication networks -
Wi-Fi and Cellular (GSM/GPRS)
Bluetooth and BLE
LoRa, LoRaWAN and LPWAN
Zigbee and Zigbee Mesh
BACnet and Modbus
Sigfox, NRF and MRF transceivers and Ethernet connections.
Cloud services - Integration established using HTTP and MQTT protocols
AWS cloud - EC2, S3, SNS, AWS IoT, AWS Greengrass, AWS Lambda, Cognito and RDS & Dynamo DB.
Azure IoT
Particle Device Cloud
Google Cloud
ThingsBoard
IBM Bluemix
Clients’ custom cloud platforms
Web and Mobile App Development -
LAMP, MEAN & MERN stacks
Core Technologies – HTML, CSS and JavaScript
JavaScript – Node.js, Angular.js, React.js, Vue.js, React Native
.NET, Python and Node-RED
Ionic and Native App Development
Actuators -
Solenoid Valves, Relays and LEDs.
Hardware communication protocols -
UART, SPI, I2C, USART, RS232, RS485, 1-Wire.
Sensors Used –
GPS based tracking solutions with additional sensor integration
IMU sensors (Accelerometer, Gyrometer, Magnetometer)
Environmental sensors (Thermocouple, Dht22, Lm35, DS18B20, BMP280, Rain sensors, Leaf wetness sensor, Soil moisture sensor, Water level, Water flow, Ambient light, LDR)
Proximity sensors (Ultrasonic, IR, PIR)
Detection sensors (Contact, Level, Hall effect sensor, Reed switch, Limit switches)
Air quality sensors (OMRON, Sensiron, Co2 Sensors, Dust sensor, VOC, MQ135, CCS811)
Vibration sensors, Vibration sensor switch, Tilt sensors
Motion sensors (ADXL345, GY521)
- Mobile App Development
- Azure Cosmos DB
- Internet of Things Solutions Design
- Amazon S3
- LoRa
- Google Cloud Platform
- Amazon EC2
- Firmware Programming
- AWS CloudFront
- PCB Design
- AWS CloudFormation
- Progressive Web App
- STM32
- API Development
- ESP32
Sergii P.
Kiev, Ukraine
✅ 100% Client Recommendation
✅ Top Embedded and Firmware developer
✅ Top Hardware designer
✅ Top Software design
✅ Top Mechanical design and industrial design
✅ Top Enclosure design
Services:
1) Hardware/Electronics design (Power, Analog, Digital/High-speed and RF electronics design)
2) Precertification testing (EMI, ESD, EMC, FCC, CE, UL)
3) Firmware design С/C++ (Bare metal MCU/MPU, FreeRTOS, Zephyr RTOS, Embedded Linux, Wireless protocols, Security, Interfaces, etc)
4) Industrial and Mechanical design (Enclosure design, 3D printing, IP standards, Prepare all for injection molding, etc)
5) UX/UI design (Embedded devices with displays, Mobile and Desktop applications)
6) Software design (Android, IOS, Linux kernel and user space development)
7) Embedded Quality Assurance(QA) and testing
8) Manual verification/testing PCB/FPC, functional and unit testing of the Firmware/Software, stress testing, temperature range testing
Service->Hardware design service:
- Power electronics design: (PFC, Solar charging controller, chargers, high voltage control, Motor controllers DC/AC/BLDC )
- Analog electronics design: High-accuracy analog measurements, Noise filtration, Digital to analog conversion, Amplifying signal
- Digital and high-speed electronics design: - Memories DDRx/LPDDRx, SDRAM, Camera and display interfaces (MIPI-DSI, MIPI-CSI, DisplayPort, etc), Data communication interfaces (QSpi, SPI, UART, I2C, FMC, I2S, USB 2/3.x, etc), (
- RF Designs: ( 50-60 GHz (Radars), 1-6 GHz (UWB, Wifi, BLE, ZigBee, GPS, NB-IoT, LTE-M/LTE, Z-Wave, etc), 13,6 MHz, 128 kHz (NFC, RFID, etc), 433 MHz (Custom protocols)
Service->Industrial and Mechanical design
- Industrial design of the sketch - it includes a few sketch designs, depending on the physical sizes of the device, specific of industry and user experience
- Mechnical CAD design with deep PCB integration - it includes full mechanical draw based on the industrial design with detailed sizes, materials and manufacturing specific.
- Thermal calculation and simulation - it includes simulation of the heating device inside enclosure, with theoretical cooling calculation
- 3D printing and verification - we use 3D printer hp jet fusion 5210, with a very nice quality of printing, that helps us to make a good verification of parts with PCBs
- Injection molding - the last step, which includes manufacturing optimization and making pres forms, preparing documentation for the manufacturing
Service->Firmware design С/C++:
- Languages: C/C++, Assembler
- Diagrams: Block, UML, Workflow, APIs
- Interfaces: I2S, SAI, MIPI-DSI, MIPI-CSI, USB 2/3.x, LTDC, DDR3/DDR4/LPDDR4, I2C, SPI/QSPI, UART, CAN, Ethernet
- Wireless: NB-IoT, LTE M, GPRS, GPS, LTE, UWB, WiFi, BLE, ZigBee, Z-Wave, LoRa, Thread, 6LoWPAN, Sub 1GHz, NFC (13,6 MHz), RFID 433 MHZ and 128 kHz
- Protocols : MQTT, HTTP, FTP, Modbus TCP/RTU, SNMP, TCP/IP, UDP/IP, DLMS, custom protocols
- Security: AES, SSL/TLS, custom algorithms
- Libs and frameworks: TouchGFX (GUI lib for MCU), emWin (GUI lib for MCU), LVGL (GUI lib for MCU), WolfSSL (SSL/TLS), Mbed TLS(SSL/TLS), osxMotionFX (Sensors fusion algorithm based on the Kalman theory), FatFS, lwIP (TCP/IP stack), WICED (Wifi stack), aws/amazon-freertos, Paho MQTT, TensorFlow
- Embedded OS: FreeRTOS, TI-RTOS, ZephyrOs, Embedded Linux, Yocto, ROS
- MCUs: NXP (i.MX RT1064, LPC1100, LPC4000), Nordic (NRF52xx/NRF53xx/NRF91xx), TI (CC3220/CC26xx/CC1100/CC3200, MSP430), Espressif (esp32, esp8266), ST(STM32H7/F7/F4/L4/F0/L0/WB/WL/G0 and STM8), Atmel/Microchip(SAM D20/D21/L21/R21/V70/V71, SAMA5/SAM4/SAMD4), Silicon Labs(EFR32, ZGM130S), Cypress (PSoC 3/PSoC 4), Kinetis (Family MK81FN256VDC15), Holtek (HT68xx)
- MPUs: Analog Devices (ADSP-2156x SHARC), Qualcomm (Snapdragon 625/425/610/845), Allwinner (A64, A33, H3, H6 series), NXP (I.MX6/I.MX7/I.M8) , ST(STM32MP1)
- SOMs: NVIDIA Jetson nano, NVIDIA Jetson Orin Nano, NVIDIA Jetson AGX Orin, Toradex (Colibri iMX6, IMX7, IMX8), Raspberry pi (CM3, CM4 modules), Inforce (Qualcomm Snapdragon 410, 820, 845 SOM), 8devices (Mango on Qualcomm IPQ6000/IPQ6010 Soc), Sensiedge(SensiBle 1 and 2, SensiLora)
Service->Software:
- Languages: Java, Kotlin, C#, C/C++, Python, Java Script
- Diagrams: Block, UML, Workflow, APIs
- Interfaces: USB, Ethernet
- Protocols : MQTT, HTTP, FTP, Modbus TCP/RTU, SNMP, TCP/IP, UDP/IP, DLMS, custom protocols
- Wireless: BLE, WiFi, UWB
- Security: AES, SSL/TLS
- Libs and frameworks: GStreamer, Paho MQTT, WolfSSL (SSL/TLS), Mbed TLS(SSL/TLS), QT framework, Xamarin Forms and Maui, ASP .NET Core and web development, React (web UI development), SQLite DB, FireBase DB, Mong DB, InfuxDB DB, Room, TensorFlow, Node.js
- OS: Android, IOS, Linux, Windows
- C++
- MQTT
- Embedded Linux
- Embedded C
- NFC
- Arduino
- PCB Design
- Real-Time Operating System
- Qt Framework
- Firmware Programming
- ARM Cortex-M
- Robotics
- FreeRTOS
- Altium Designer
- RFID
Max T.
Prague, Czech Republic
Hi everyone! I’m Max, and I’ve been delivering commercial electronics development and production services for over 12 years. What drives me isn’t just the technology—it’s the process of turning ideas into real, working products.
I genuinely enjoy working with electronics, which is why I don’t see the people I work with as “clients” but as partners. To create outstanding results, you need more than just technical skills—you need passion, ownership, and a collaborative mindset.
My rate might be on the higher side, but I deliver fast and efficiently, so the overall final time (and cost) often ends up lower than average.
Key Services:
- New Product Design
- Existing Design Improvements
- Prototyping & Mass Production Management
- Sourcing and Production in China/EU
APPLICATIONS
• RF design (GPS/GSM/BLE/Wi-Fi/Zigbee)
• AI Processing Systems
• FPGA
• CPU (Allwinner, i.MX6, i.MX7, i.MX8, and others)
• Ethernet
• Android/Linux and other processor-based devices
• USB 2.0/3.0, USB-C
• IoT
• SMPS power supply, wireless QI chargers
• GaN Chargers and wall adapters
• Embedded MCU systems
• MEMS (Accelerometer, Gyroscope, Magnetometer)
• LED lighting
SERVICES
• PCB Design & Layout
• Electrical Engineering
• Realistic 3D PCB Modeling
• Prototyping (PCBA)
• Cost-effective design consulting
• Mass production management
• DFM guide
OUTPUTS
• Schematic drawing
• PCB Layout
• Gerber files / Drills
• BOM
• Pick&Place
• 3D Models
- Electronic Circuit Design
- Raspberry Pi
- LED Physics
- Altium Designer
- Power Electronics
- Microcontroller Programming
- PCB Design
- WiFi
Mina M.
Cairo, Egypt
Experienced Digital IC Design Engineer and RTL Coding Expert, SoC specialist offering FPGA/ASIC RTL Coding in Verilog, SystemVerilog, and VHDL, with Multilingual Tutoring.
Available Round-the-Clock | Flexible Pricing | Prioritizing Service Excellence
My Experience:
I've worked extensively with CPUs, Computer Archecture, Digital Electronics, Assembly Languages and HDL coding.
For ASIC design, I've harnessed the power of Synopsys tools, employing both TCL scripts and GUI.
I am also proficient in documenting designs using three methods: LaTeX, and Microsoft Word.
My portfolio showcases a diverse array of complex designs across fields like image processing, cryptography, communication protocols, and processors, all implemented using HDLs.
Reach out to discuss the details, and I'll be here to assist you at any time. Your success is my priority.
Key Skills:
- Digital IC design
- RTL Coding using Verilog/SystemVerilog and VHDL
- Simulation and debugging using QuestaSim/ModelSim
- Computer Archecture design (ARM, RISC-V, X86) and Assembly Language coding.
- FPGA/ASIC flow
- Communication protocols such as: UART - SPI - I2C - AXI
- Programming languages such as: Python • C/C++.
- Knowledge in scripting Language : TCL.
Through these skills and various projects I have improved my technical skills, applied my knowledge and grown my network with people around the globe.
Tools:
Vivado IDE • Quartus prime • VS Code • Xilinx ISE • ModelSim/QuestaSim • Synopsys Deesign Compiler •MATLAB • Git/GitHub • Notepad++.
- Computer Hardware Design
- Computer Assembly
- Computer Engineering
- Verilog
- CPU Design
- SystemVerilog
- X86 Assembly Language
- Assembly Language
- Embedded System
- ARM Microcontroller
- C
- Cache Management
- C++
Simon B.
Eitorf, Germany
github.com/SimRunBot
Technologies I use:
* Nextjs, React
* Tailwind
* Vercel
* Stripe
* Typescript/Javascript
* Git
- JavaScript
- TypeScript
- Blockchain
- Solidity
- Smart Contract
- NFT Minting
- React
- Stable Diffusion
- ChatGPT
- Web Development
- SaaS Development
Jotham Ivan A.
Quezon City, Philippines
Hello! I am a freelancer specializing in Linux-based Operating Systems, Infrastructure Designs, Network Design and Implementation, storage designs, and a solutions architect for high availability clustering.
I have more than five years of experience in Linux Systems and Network Administration, particularly on High Performance Computing and large storage systems. I can handle basic system administration tasks like maintaining plesk domains, designing storage systems, raid configurations, desktop environment installations to more advanced system administration like designing and implementing high-availability clustering using PCS (pacemaker + corosync) and as well as database clustering using Percona XtraDB cluster (mysql)
Some of the backgrounds I have in Linux system administration include installing or compiling different software from different developers for the client to use. Most of them are scientific tools.
I also have extensive knowledge in Ovirt and OpenStack Cloud Administration, and basic knowledge in AWS and Virtalus systems
On the network administration side, I can help you design and implement network architectures involving LANs, VLANs, and WANs using PfSense together with the application of PfSync and CARP for high availability.
I am familiar with Ubuntu, Debian, Suse, Redhat, Centos operating systems, PfSense and OPNSense firewalls, EXOs, DELL switches.
I also handled backup architecture using BareOS and other storage clusters/filesystems like ZFS, Ceph. GlusterFS and LustreFS.
Feel free to contact me and ask away professional questions; I'd be happy to answer them!
- Network Design
- Zabbix
- Linux
- CentOS
- Ubuntu
- OpenVPN
- Raspberry Pi
- Backup Administration
- Copywriting
- Technical Writing
- MySQL
- Linux System Administration
- Server Virtualization
- Plesk
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