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Mario N.
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Mario N.

PCB design, Firmware, CAD, Hardware systems

I have my own registered Engineering Prototyping Company, where we help customers go from idea to manufacturing. We offer a full-cycle prototyping journey: Idea--Firmware--3D design--PCB design--CAD/CAM--Testing--App--Sourcing and Manufacturing in China We help with Management and Engineering ONE stop for all prototyping needs: With over 7 years of experience, we can help you design your electronics, produce your 3D model, CAD/CAM and manufacture your prototype. Electronics and Firmware - 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 - Multi-layer PCB design experience with: • Microprocessor: ARM Cortex-M3, Cortex-M4, • STM32, ESP32, Atmega, Nordic •. Low-power chip: Nordic nRF52840, nRF5340, nRF52832, ESP32, STM32WL series • SoM, custom board design for: CM4, Rasp, Orange Pi, iMX8, Jetson Nano/Xavier/Orin, RK3588, RK3568, RV1126 Rockchip, TI AM6254 ,... • Power supply: DC-DC (isolated, Flyback, Boost, Buck, LDOs…). • Communication circuit with motor driver: BLDC, AC servo, DC servo…via I/O, ADC and CAN. • Wireless, IoT: RF, Wifi, Bluetooth 4.0, GSM (3G, 4G/LTE), LoraWAN... - Experience in building evaluation kits such as Arduino, ESP32, ESP8266, STM32... - BOM creation from favourite suppliers: Digikey/Mouser/JLCPCB, LCSC... - Knowledge of proper layout techniques for EMC and EMI compliance. - Knowledge of DFA, DFM, and PCB manufacturing and assembly processes. - Firmware development using C, C++, and Python language, QT - UX/UI design for STM32, ESP32, Rasp Pi, using Figma, TouchGFX, LVGL - IoT: MQTT, Thingsboard, AWS, Blynk.. Industrial and Mechanical Design: •CAD for machines, manufacturing (DFM), 3D printing, reverse engineering (Autodesk Inventor and Fusion 360, SolidWorks, Siemens NX, ) • CAD product design, parametric CAD design and rendering (Autodesk Inventor and Fusion 360, SolidWorks) - Physical product prototyping and Manufacturing: -Making the casing ( metal and plastic) in-house without machines. Fusion 360, SolidWorks, Blender, We offer travel to location. We offer 24/7 support. English, Russian, Bulgarian. Japanese, Spanish

🇧🇬Sofia, Bulgaria$50/hr100% JSS5.00 (4)Since Dec 2022

Earnings and projects

MRR
$5.1k

Last 6 months ÷ 6

World#5,206 / 412k
🇧🇬Country#17 / 1,161
Revenue, last 30 days
$5.5k

Last 6 months: $31k

World#4,700 / 412k
🇧🇬Country#16 / 1,161
Total earnings
$40k

Billed in all: $42k

World#90,258 / 412k
🇧🇬Country#311 / 1,161
Per project
$2.2k

$3.1k in the last 6 months

World#70,964 / 412k
🇧🇬Country#215 / 1,161
Projects, last 6 months
10
40% fixed60% hourly
World#18,299 / 412k
🇧🇬Country#32 / 1,161
Projects in all
18

Across 22 contracts

32% fixed68% hourly
World#143,610 / 412k
🇧🇬Country#488 / 1,161

Earnings, last 30 days

$42k+$5.5k earned in the last 30 daysBilled in all, before Upwork's fee · drag across the chart to see what was earned in any stretch
$35k$40k$45kOct 9Oct 24Nov 8

Skill rankings: Top 0.85% in CAD Conversion

Ranked by MRR among everyone on Upwork with the skill.

  1. #5Manufacturing470 freelancers · 🇧🇬 #1Top 1%
  2. #53D Scanning158 freelancers · 🇧🇬 #1Top 3%
  3. #7CAD Conversion823 freelancers · 🇧🇬 #1Top 0.85%
  4. #14Rapid Prototyping448 freelancers · 🇧🇬 #1Top 3%
  5. #16Autodesk Fusion 360753 freelancers · 🇧🇬 #1Top 2%
  6. #16Electronics432 freelancers · 🇧🇬 #1Top 4%
  7. #17Arduino1,007 freelancers · 🇧🇬 #1Top 2%
  8. #18STM32545 freelancers · 🇧🇬 #1Top 3%