...实现电源管理模块，设计低功耗电路（锂电池供电）。 设计阻抗检测与反馈模块，确保电流强度根据皮肤阻抗自动调整。 提供电路的安全保护功能（如过流、短路保护）。 打样电路板并进行初步测试，确保电路功能正常。 技术要求： 经验丰富的电子电路设计背景，熟悉低频电刺激器的电路设计（TENS或类似设备经验尤佳）。 熟练掌握微控制器（如STM32、ESP32）和DAC控制信号生成。 有PCB设计经验，能独立完成从原理图设计到打样测试的全流程。 熟悉电流放大、阻抗检测及反馈回路的设计与应用。 能够使用仿真软件（如PSpice、LTSpice）进行电路仿真验证。 2. 外观设计师： 职责： 设计一款适合佩戴在脖子上的设备外观，确保舒适性和稳定性。 根据人体工程学设计电极与颈部的贴合部位，确保设备电极能够精确贴合迷走神经位置。 提供初步3D模型或草图，展示设备外观和电极位置的布局。 设计设备外壳的防水防汗功能（IPX4或更高标准）。 考虑设备的便携性、用户友好性及时尚美观性，适合日常佩戴。 技术要求： 具备可穿戴设备设计经验，了解人体工程学及佩戴舒适性设计要求。 熟练使用3D建模软件（如SolidWorks、AutoCAD、Fusion 360等）。 能够提供从概念到最终产品的完整设计方案。 有过医疗设备、电子产品设计经验者优先。 其他要求： 工程师和设计师将需要紧密协作，确保设备的内部电子元件和外观设计能相互适应。 项目需要在规定的时间内按时交付原理图、PCB打样和初步设计草图。 欢迎有相关领域经验的个人或团队投标。 项目预算： 预算面议，视经验和能力而定。 项目时间： 预计设计和打样时间为4-6周。 联系方式： 如果你有兴趣参与这个项目，请提供相关的工作经验、成功案例以及预期的工作时间和预算要求。
我有路由器上下壳需要设计： 1.尺寸是250X160X50mm; 2.接口包括5个以太网口，3个USB A type,一个DC插座，一个复位按钮； 3.顶部中央有圆形LED指示，直径50mm； 4.带两个扬声器，开口朝下； 内部PCB 参考附件。 要求： 设计简洁有几何艺术感，文件格式SKP
任务： 1、集成Arduino，实现正常的初始化、连接Arduino硬件，并且支持向Arduino上传代码； 2、UI调整； 以上第1步已经完成集成Arduino部分，初始化、连接存在BUG，需修复，上传代码功能待实现。
CAM 350 相关版本工程专业 ***************************** panelized 专业小时 界面GPIO或 FPC链接布线 双面混六层 没有太多责任高求 快速完成~付款‘套餐’ 写个脚本 价钱另议
有4款PCB需要重新设计（修改），尺寸和厚度及工艺不变，现有线路图中有2个圆圈的意思是2个圈之间放反光杯，灯珠排列不能超出内圈范围
我有进行中的、与之前的项目相关的工作parsing jsonarray using Arduino mega with esp8266-12 '
主要是想仿真一个激光测距的，暂时可以不考虑激光传感器，只需要模拟出计算时间差然后乘以光速，最后显示在LCD显示器上。自己已经做了一部分，proteus图已经画好，程序但是有点问题，求帮忙，有偿。
...智能不是庞大的功能 智能不是复杂的操作 智能就是让生活更简单 革命性的三段延时关闭功能，以简短的操作，满足您的各种需求 多种控制方式，适应您所忽略的生活习惯 轻按打开，长按打开，全按打开，多种控制方式 独家专利智能手势识别，防误操作 独家同状态双控设计，让您的生活更简单 独家双控设计 典雅的呼吸灯设计，渐亮渐暗间，仿佛智能有了生命，为您的家装画龙点睛。 优质的用户体验需要强大的硬件支撑。 开关面板、触控面板、防静电保护板、电子芯片组、PC阻燃底座 基于3毫米加厚钢化玻璃材质，弧线凹槽精致研磨，打造最舒适的触摸感受，轻松实现盲操作。 兼具防水功能，使您的家人更安全。 3毫米加厚钢化玻璃材质 曲面弧线凹槽精致研磨 兼具防水功能，使您的家人更安全。 超标不计成本大尺寸触控原件，实现多方式精准操作 强弱电隔离，信号无损传达，正真做到“芯”领神会。 进口KB-A级双层PCB电路板； 30ms之内触摸响应速度， 进口触摸芯片Atmel 固体钽电容； 专业星型防干扰布线设计 德国拜耳进口PC材质 最高阻燃等级V0 配音/欧盟CE标准为您的安全加分。 几十次的试模，只为确定最合适的宽度 几十次的打样，只为做出最完美的弧度 几十次的手板，只为确定最佳的边缘倒角 几十次的样品，只为确定最均匀的导光板制作方案 每一次零点几毫米的改进，都是工程师们对细节的极致追求 寓智能于简单，隐科技于无形，究品味于细节 润泽细腻的圆角设计、时尚倒角设计、适合人体工程学，弧线凹槽 COOLTOUCH充分考虑到了不同的装修风格，精心设计了几种不同款式，提供丰富的个性化选择，智能与艺术的结...
需要一位热衷 Arduino、电子设计的玩家创客帮忙介绍一个拇指般大小 32 位 Arduino 兼容开发板给中国的玩家. 这小小 38mmx18mm 的开发板功能含: 100MHz 32bit RISC / FPU + 1MByte Flash + 212KByte RAM + 2 UART + 2 SPI + 1 PWM + 17 GPIO + GPS 接收器. 售价 $12 (不含 GPS 有源天线). 性价比远超越在群众募资网站 Kickstart上能看到的任何 Arduino 相关开发板 (Digispark, Microduino, Tinyduino, Galago, Teensy 3.0...). 目标是 10 天内帮 NavSpark 活动增加 250 位中国区的支持赞助者, $500 做酬劳, 超过或不及都照比例计算. 例如: 增加 200 位中国区支持赞助者则以 US$400 做酬劳, 1000 位则以 US$2000 做酬劳. NavSpark 活动网址:
I require an experienced embedded C/C++ programmer to assist with my project which is using the CH32F103C8T6/CH32X033F8P6 MCU. The project involves working with either Zephy...I am facing are compilation errors, runtime error. The work won't take much time as the code has already been generated by LLM only error correction is needed. Key Requirements: - Extensive experience in embedded C/C++ - Proficiency in either Zephyr or RT-Thread RTOS - Ability to troubleshoot and fix AI-generated code - Experience with the CH32F103C8T6 MCU Please note that mere knowledge of Arduino is not sufficient for this task. Your role will primarily involve code testing and completion, so a keen eye for detail and strong debugging skills are essential. The freelancer needs to complete the project...
I need an Android application designed for USB OTG connectivity. The purpose of this app is to serve as a comprehensive dealer/installer toolkit for a custom boat lift controller. Project Overview I have a custom Boat Lift Controller (Arduino/AVR-based) that communicates over USB-to-serial. I need an Android app (for phone/tablet with OTG) to serve as a Dealer/Installer Toolkit, providing: Full configuration (all settings, e.g., limit switches, motors, etc.) Setup Wizard (mandatory) with GUI screens guiding through each step of device setup. Control (move the lift up/down, set presets, toggle AUX lines, etc.) Monitoring (real-time serial terminal for manual commands, logs, etc.). Firmware Updates over USB for both the main controller and a sidekick microcontroller board. The fina...
...Control of dynamometer settings - Real-time calculation of horsepower (HP) using a supplied equation The ideal candidate for this project should have extensive experience in app development, particularly for Arduino-based systems. A strong understanding of engine dyno operations and data interpretation will be advantageous. Given the nature of this project, proficiency in real-time data processing and cross-platform app development is crucial. Arduino Dyno APP Project. The objective of this project is to create a App, capable of reading and displaying the output of all the Arduino Dyno hardware sensors. Also display HP based on HP = Torque X RPM/5252 (Torque=weight). The APP layout should be clean looking and well laid out. 1. Create realtime display 2. A star...
I'm looking for a skilled IoT and Bluetooth professional who can help design a remote control using nRF devices from nordic or equivalent for low power consumption to control various types audio equipment like amplifiers, preamplifiers, control equipment, equalizers. The freelancer will also design the Control unit on the Audio equipment using ESP32 (with the native IDF, NOT using Arduino) to receive the do the initial connection with the remote control and the mobile app, then maintain the connection, receive the commands from the paired devices, and send them locally to a queue. The system should be able to control various aspects of the device, including: - Volume control - Track selection - Power on/off - Menu navigation - Device selection - Input selection - Balance...
I need a professional who can customize my WordPress header to replicate exactly the style, design, and functionalities of the menu and mega menu found on Key requirements: - Implement an identical style on a personalized header. - Utilize the theme I already have, which is the same as the reference site. - Ensure all customizations can be executed via the theme's personalization options. I do not need any additional functionalities in the header, nor do I need assistance with theme installation and configuration. The ideal candidate for this project should have extensive experience with Shopify customization, particularly with creating bespoke headers. A keen attention to detail is crucial to ensure an exact replica of the reference site.
I'm seeking assistance with designing ...project involves creating a modulator for the transmitter capable of encoding data using the Amplitude Shift Keying (ASK) modulation scheme. Key project components include: - The data will be sourced from an Arduino in binary form and needs to be modulated with a sine wave for transmission. - The drone will communicate its speed to a controller. - An analysis of the characteristics of both linear and non-linear amplifiers through a modulator at the transmitter end. Ideal skills for this project: - Proficient in circuit design and PCB creation. - Experience in working with Arduino and drone technology. - Knowledgeable in both linear and non-linear amplifier characteristics. Please provide a quote and specify any addition...
...for an experienced hardware engineer to design an RFID reader with Wiegand output. The project includes: - Development of an electronic circuit - PCB (Printed Circuit Board) design - Preparation of all manufacturing files (Gerber, BOM, Pick & Place) - Prototyping and testing of a working unit The goal is to develop fully functional hardware that will work with the firmware we provide for proof of concept. # Requirements: ✅ Experience in electronic circuit and PCB design ✅ Knowledge of RFID technologies (13.56 MHz) and Wiegand interface ✅ Designing circuits with LED indicators, buzzer, and other necessary peripherals ✅ PCB optimization to fit a provided enclosure ✅ Generating all necessary manufacturing files (Gerber, BOM, Pick & Pl...
I'm in need of an experienced PCB designer who can create a double-layer PCB for a consumer electronics project. Key Components: - The PCB will require a power management module to ensure efficient energy use and longevity of the device. Skills and Experience: - Expertise in designing double-layer PCBs, particularly for consumer electronics. - Proficient in incorporating power management systems into PCB designs. - Familiarity with industry standards and best practices for PCB design. - Excellent problem-solving skills and attention to detail.
I'm looking for an expert to wire 5 buttons with 5 LED 7-segment counters. The buttons will be manual push buttons, and their function will be to increment the count on the LED counters. I already have the components including Arduino Uno R3 Boards that are pre-programmed with a time delay so the buttons cannot be spammed. I need to understand how the circuit works and how it is wired properly. Wires have been disconnected and it is not working at this time. Ideal Skills: - Proficient in working with 7-segment displays - Experience with wiring manual push buttons - Knowledge of basic circuit design and implementation
I'm looking for a passionate and skilled Robotics Tutor to teach my Basic Robotics Course. The ideal candidate will have experience in robotics, basic electronics, and programming, specifically with Arduino. The tutor will deliver online classes, guiding students through the course content with hands-on projects and discussions. Key Responsibilities: - Deliver engaging online classes - Guide students through course content - Facilitate hands-on projects and discussions Ideal Skills: - Experience in robotics and basic electronics - Proficient in programming with Arduino - Experience teaching beginners - Strong communication skills for online tutoring
Project Title Schematic & PCB Design for ATmega32U4 + PCF7991 125 kHz Transponder Reader with USB Interface Project Overview I am looking for a skilled electronics engineer or PCB designer to create a schematic and PCB layout for a device that uses: ATmega32U4 (5 V, native USB support, 44TQFP package) PCF7991 RFID base station IC (operating at 5 V, 125 kHz) USB interface for communication with a PC (no external USB–serial chip required) This device will transmit and receive data at 125 kHz for transponders (e.g., automotive immobilizer tags) using the PCF7991 and a coil antenna. The ATmega32U4 will handle the low-level bit-banging, timing, and decoding, while appearing as a USB CDC device (virtual COM port) on the PC side. I have existing Arduino-ba...
I have a reverse-engineered bidirectional amplifier PCB designed for use in tunnels. However, it is currently failing to achieve the required transmission distance coverage of 350 meters. I need experienced electronics engineer or RF (Radio Frequency) specialist to troubleshoot the issue, identify the root cause, and implement the necessary fixes to ensure the amplifier meets the desired performance specifications. • Analyze the existing PCB design and identify potential issues causing the reduced transmission distance. • Perform signal strength and quality tests to diagnose the problem. • Propose and implement design modifications or component replacements to improve performance. • Ensure the amplifier meets the required transmission distance of 350 meter...
I'm seeking a skilled professional with extensive experience in Fusion 360 for PCB design. Although I haven't specified the particular type of PCB work or the industry it's intended for, I require someone who can handle all aspects of PCB design, including schematic creation, PCB layout, and 3D modeling of the PCB. Ideal candidates would possess: - Proficiency in Fusion 360, specifically in PCB design - Strong understanding of schematic design and PCB layout - Experience in 3D modeling of PCBs - Ability to work with both custom and standard components
I need an experienced Arduino engineer to help me with a project. The goal is to control a filter press through a progressive increase of air pressure. This will be used in an industrial setting. Key Requirements: - Design an automated control system using Arduino and remotely control - Implement this to regulate air pressure in the filter press Ideal Skills: - Strong background in Arduino programming - Previous experience with industrial automation systems - Understanding of filter press operations
...voltage rails (1.2V, 1.8V, 2.7V, 10V). • Minimize heat dissipation and power loss in wearable conditions. 4. PCB Design & Prototyping • Design a compact, flexible PCB suitable for smart glasses. • Implement best practices for high-speed signals, RF design, and power integrity. • Generate Gerber files, BOM, and manufacturing documents. 5. Firmware & Communication Framework (Optional, but a plus) • Assist with low-level firmware development for FPGA, Bluetooth, and sensor integration. • Provide sample code for Bluetooth communication and camera interfacing. Deliverables: 1. Updated Circuit Schematic (with necessary modifications). 2. Optimized PCB Design (Altium/KiCad/Eagle, including Gerber files). 3. Component...
...an encrypted message or hash that only your server can validate. ✅ Solution: Use NTAG 424 DNA for AES-128 encryption & dynamic authentication. ❌ Risk: More expensive than regular NFC tags but extremely secure. 3. Implement Server-Side Authentication (Tokenized URLs) Instead of embedding a static URL on the NFC tag, generate a unique, temporary token for each scan. The URL could look like this: arduino Copy Edit The token is validated server-side and can: Expire after one use (prevents replay attacks). Be tied to the NFC chip UID (ensures it’s the original tag). Include a cryptographic signature (HMAC or JWT) to prevent tampering. ✅ Solution: Use JWT (JSON Web Token) or HMAC signatures to validate scans. ❌ Risk: Requires a server backend to generate
I need a WordPress developer to create a mega menu similar to the one on Nautilus Marketing for my existing website, which is built using Elementor theme builder. As of now, I only need the "Solution" bar to be structured as a mega menu. The goal is to have a clean, structured, and user-friendly menu similar to the reference site. Requirements: ✅ Build a mega menu for one section ("Solution" bar) ✅ Use Elementor for customization and easy future edits ✅ Ensure responsiveness on desktop, tablet, and mobile ✅ Match the style of my existing website while incorporating the functionality from the example site ✅ Deliver within 24 hours Current Website: Example Mega Menu: Skills Required: ? WordPress ? Elementor & Elementor
I'm looking to develop a pair of on-ear, wearable headphones. Ideal skills for this project include: - Electronics engineering - Audio technology expertise - Wearable technology design experience - Proficiency in consumer electronics Please provide relevant past projects in your proposal.
I'm looking for an experienced developer to port existing Arduino and Raspberry Pi project (found at ) to an STM32 microcontroller. The project involves sensor integrations, data logging, and control algorithms. Key Requirements: - Porting critical features from the existing project - Implementing WiFi capabilities using the STM32's built-in WiFi module - Open to using alternative libraries or frameworks instead of the ones used with Arduino and RPi Ideal Skills and Experience: - Proficient in STM32 programming - Experience with Arduino and Raspberry Pi - Knowledge of sensor integrations and data logging - Familiarity with control algorithms - WiFi module implementation experience - Ability to suggest and use alternative libraries or frameworks.
Programa para Arduino ESP32 e display TFT 2.4 220x320 ILI9341 com um temporizador de 00min. 00seg. disparado por uma entrada que tbm dispara um totalizador de 4digitos e indicação de um codigo QRcode
I'm looking for an experienced PCB designer and programmer to help with a project in industrial machinery. The PCB will primarily process data from sensors, so experience with data processing is crucial. Additionally, the PCB will need to be compatible with the Field-Oriented Control (FOC) motor method. Ideal skills and experience for the job: - PCB design experience - Programming expertise - Familiarity with industrial machinery - Understanding of sensor data processing - Knowledge of Field-Oriented Control The expected timeline for the project is 1-2 months. The project requires detailed documentation for both the PCB design and programming. The PCB should use the RS485 communication protocol for interaction with the sensors.
I need an Arduino Uno code, alongside a connection diagram, that will allow me to integrate an RFID reader with a MIDI serial bridge. The setup should output a distinct MIDI note for each of my 6 RFID tags. Key Requirements: - Each RFID tag should trigger a different MIDI note when scanned. - The MIDI note numbers need to be hard-coded within the program. - The use of a 7-byte RFID tag, with UID provided by me. Ideal Skills: - Proficient in Arduino programming. - Experience with MIDI serial bridge setups. - Knowledgeable about RFID technology. - Capable of creating clear, understandable connection diagrams. The connection setup will be as follows: - An RFID reader is connected to the Arduino. - The Arduino is linked to a Hairless MIDI serial bridge. - The s...
I'm seeking a skilled electronics designer to create a PCB for a consumer electronics project. It should incorporate standard LEDs and sensors. Key Requirements: - Expertise in PCB design for consumer electronics. - Proficiency in integrating standard LEDs and sensors onto a PCB. - Prior experience with designing PCBs for consumer electronics is crucial. - Understanding of LED and sensor specifications and requirements. The ideal candidate should be capable of designing a flexible and reliable PCB that meets the needs of a consumer product. I look forward to your proposal.
I'm looking for a skilled engineer to develop an Arduino-based project for controlling an LED light. The light will be an LED and will be activated through a mobile application with a simple click. Key Requirements: - Experience with Arduino programming - Proficiency in developing mobile applications - Knowledge of LED circuitry - Ability to create a seamless user experience - Good communication skills for project updates and discussions The main task will be to design the control system, program the Arduino, and develop the mobile app interface. The goal is to have a functional, user-friendly system for controlling the LED light via clicks on a mobile app.
...Smith charts and ADS tools. - RF filter design workflows using Smith charts and ADS. - Measurement techniques: Analysis of S-parameters, probe configurations, and essential RF concepts. - RF amplifier simulations: Stability, gain analysis, and noise performance evaluation. - Comprehensive RF circuit simulations, starting with idealized designs and progressing to complex cases. - Importing PCB layouts into ADS to simulate practical design scenarios. 3. RF ADC and DAC Design and Simulation in ADS: - Fundamental principles of RF ADC (Analog-to-Digital Converters) and DAC (Digital-to-Analog Converters). - Key design considerations and their application in RF systems. - Simulation of RF ADC/DAC performance and integration into broader RF designs using ADS. - End-t...
I'm seeking a skilled...seeking a skilled and dedicated developer to design a physical PCB for managing power from a 220v AC and DC source. The primary function of this PCB will be power distribution. Key Aspects: - The PCB must be able to effectively distribute power from a 220v AC and DC source. - I have specific components in mind for this project, so familiarity and experience with them will be a plus. - Components required on the PCB include Transformers, Capacitors, Mosfets, and an esp32. Ideal Skills and Experience: - Proven experience in PCB design and development. - Proficiency in working with power distribution PCBs. - Familiarity with the specified components: Transformers, Capacitors, Mosfets, and esp32. - Ability to design a robust ...
*** OVERVIEW *** - Ten US dollars per hour. - One hour per day (or per night). - You will help me design, code, and develop an IoT product using MicroPython running on an ESP32 microchip. - You do *not* need any experience with microcontrollers, electronics, electrical engineering, mechatronics, Arduino, PCB, circuit design, or Python. - If Freelancer.com prevents you from bidding on this project or if you want to avoid “spending” one of your Freelancer bids you can apply "passively” for this project by pasting "MicroPython_ESP32_11_September_2019" into your Freelancer profile. Please see the section below in this posting called *** APPLYING "PASSIVELY" *** for more information. *** LOCATION *** You must live th...
I'm looking for an experienced developer to port existing Arduino and Raspberry Pi project (found at ) to an STM32 microcontroller. The project involves sensor integrations, data logging, and control algorithms. Key Requirements: - Porting critical features from the existing project - Implementing WiFi capabilities using the STM32's built-in WiFi module - Open to using alternative libraries or frameworks instead of the ones used with Arduino and RPi Ideal Skills and Experience: - Proficient in STM32 programming - Experience with Arduino and Raspberry Pi - Knowledge of sensor integrations and data logging - Familiarity with control algorithms - WiFi module implementation experience - Ability to suggest and use alternative libraries or frameworks.
This looks like a very simple fix, but there will be more work later. Look here to see the device. The home page has a two minute video that will explain what we are doing. The Arduino controls four pumps using PWM by pressing any of 12 keys on a keypad. All "formulas" are timed to shut off automatically. We have added (and it works) the monitoring of BLE beacons so that the MAC address nearest the Platform is identified and the Platform sends a line similar to the following message to Serial Monitor #2502101,10991,5,ff:ff:11:4c:50:d1,99& Serial # of Platform time in seconds since Platform powered up + 10000 MAC address of nearest beacon (They all transmit address,"iTAG" there are 13 spaces behind iTAG, and signal strength That is all we need to det...
Hi, this is the to be the PCB design quotation. The PCB of the power supply circuit is required to be designed with the Schematics. Software simulation files and PCB will be delivered.
...Espressif's ESP32/ESP32-S2/ESP32-S3. It can be controlled via a mobile app or a game controller over a Wifi network. Key aspects of the project include: - Testing the ease of control via the mobile app - Assessing the responsiveness to the game controller - Testing that the esp32 drone code actually works - using basic components to test functionality. For example testing on LED's for each motor. - Test PCB Gerber files online as well The ideal freelancer for this project should have: - Experience with Espressif esp drone - Extensive experience in functionality and usability testing - A strong understanding of ESP32 technology - Proficiency in evaluating mobile applications and game controllers. Please note that I only require testing services, all code and contro...
I'm looking for a talented mobile app developer to create a Smart Home Automation app for both iOS and Android. The server and database are MQTT-based and already set up at a given address. This app will connect with PCB via MQTT, enabling users to control various types of switches (2-node, 4-node, 6-node). Key Features: - Switch Control: Users must be able to control their home switches through the app. - User Registration and Login: The app should offer a secure and easy-to-use login and registration system. - Real-time Updates: The app should provide real-time updates to the users about their home status. UI Style: The app requires a modern and interactive User Interface (UI). So, experience in UI/UX design is a plus. Skills and Experience Required: - Proficient in cross...
