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Project Title: Raspberry Pi Control System for Linak LA14 Linear Actuators + Extensive Sensor Integration (12V Tractor Battery) Project Description: I am looking for an experienced Embedded/Hardware Engineer to develop a scalable control solution based on a single Raspberry Pi 5. The system must control and monitor up to 12 identical modules simultaneously. All components are powered by a 12V tractor battery. Therefore, voltage fluctuations, load peaks, EMC interference, and reverse polarity protection must be properly addressed. One Module consists of: Inputs per Module: • 1× External PWM control signal from external (5–12 V, direction + speed) • 1× Linak LA14 feedback (Motor-FB-SIG, FB-GND, FB-VCC) • 1× Current measurement of the Linak • 2× Elobau 424A00A120B angle sensors (0.5–4.5 V) • 2× 12 V inductive proximity sensors (PNP/NPN) • 1× 12 V control signal of a pneumatic valve (monitoring) Outputs per Module: • PWM control of the Linak LA14 (direction + speed) via H-bridge • Control signal for the 12 V pneumatic valve (relay or direct) Overall Requirements: • 1× Raspberry Pi 5 controls and monitors up to 12 modules (12 Linak actuators, 24 Elobau sensors, 24 inductive sensors, etc.) • Robust, noise-immune and scalable architecture (not everything wired directly to Pi GPIO) • Preferred communication: I²C (with multiplexers/expanders) or RS485 / Modbus RTU for high noise immunity in a tractor environment Deliverables: 1. Complete Bill of Materials (BOM) with specific product recommendations from [login to view URL] (ADC modules, H-bridges, optocouplers, RS485 modules, voltage dividers, protection components, DC/DC converters, etc.) 2. Full schematic / wiring diagram (KiCad or clear PDF) including tractor battery power concept (fuses, overvoltage protection, reverse polarity protection, etc.) 3. Detailed wiring and mounting instructions (including Linak connector pinout) Important Note: This is a prototype project. Therefore, no custom PCB should be designed or manufactured. The solution must be built using standard, readily available off-the-shelf components (modules, breakout boards, etc.) that can be easily purchased from [login to view URL] and similar shops. Additional Notes: • System must be reliable for outdoor / mobile use on a tractor • Modular design preferred (easy to start with fewer modules and expand to 12) • High emphasis on robustness, protection circuits and EMC suitability
Project ID: 40447604
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Are you looking for a scalable embedded control system around Raspberry Pi 5 to reliably control multiple Linak LA14 actuators with sensor integration in a harsh 12V tractor environment? I’m an Electrical and PCB Design Engineer specializing in embedded systems, industrial control, and robust field electronics. I can design the complete prototype architecture using off-the-shelf modules only, optimized for EMC, protection, and easy expansion to 12 modules. Approach Review all module I/O requirements Define robust distributed node architecture Use isolated communication (recommended: RS-485 / Modbus RTU for tractor noise immunity) Design power input protection (fuses, TVS, reverse polarity, surge filtering) Select industrial-compatible modules from Amazon Germany Prepare complete schematic in KiCad / PDF Document assembly and installation process Deliverables Complete BOM with exact module recommendations Wiring schematic Power protection concept Detailed installation guide Linak connector mapping Scalable module connection strategy Testing checklist I can also help optimize startup with a smaller 2–4 module prototype first, then scale directly to full deployment after validation. Best regards, Hasan
€30 EUR in 7 days
4.0
4.0
16 freelancers are bidding on average €184 EUR for this job

As an electrical engineer with a Master's in Embedded Systems, my in-depth knowledge and expertise align perfectly with your project requirements. I have extensive experience designing and developing robust embedded solutions using microcontrollers such as the Raspberry Pi, including handling voltage fluctuations, load peaks, EMC interference, and reverse polarity protection- crucial for outdoor and mobile use on your tractor. One of my core proficiencies lies in PCB design and RF hardware, and I have worked on multiple projects that required optimizing systems for noise immunity. This includes utilizing protocols such as I²C for effective communication in harsh environments like tractors. Moreover, my experience with creating wiring diagrams, mounting instructions and providing detailed Bill of Materials (BOM) aligns exactly with your needs to build a scalable yet maintainable solution using off-the-shelf components. Lastly, I understand the importance of modularity in designing for prototypes like yours. My experience with designing multi-layered PCBs paired with my knack for creating intelligent IoT solutions makes me an ideal candidate to help bring your project to life. Choose me, and I promise you impeccable attention to detail and a level of dedication that ensures your project is not only completed successfully but performs optimally too.
€750 EUR in 7 days
8.3
8.3

Hello, I reviewed your Raspberry Pi + Linak actuator system carefully. The main focus is building a robust and noise-immune control architecture for tractor environments with proper EMC, surge, and reverse polarity protection. I have experience with Raspberry Pi, RS485/Modbus systems, actuator control, industrial sensors, and 12V automotive power systems. I can provide the complete BOM, wiring diagrams, protection circuitry, and scalable module architecture using off-the-shelf components only. The design will be modular, reliable, and easy to expand from a few channels up to all 12 modules. Regards, Engineer Muhammad Usman
€140 EUR in 3 days
6.9
6.9

Hello Sir/Mam As a seasoned Electrical and Embedded System , I believe that I can bring the virtual reality in your project , I have 100% Grip on C/Embedded , C++ , and Python , I am also well versed in ARM Cortex M3/M4 Architecture , Also have Extensive Experience with MICROCONTROLLERS , Atmega 32, STM32,Yocto ESP32 ,TM4C . I have a great Grip on ARDUINO , MATLAB , PCB LAYOUT and IOT Applications . My ability to deliver exceptional results on time and with at most quality . Please come on chat to discuss more about project. I will be waiting for your response. Thank you !
€140 EUR in 2 days
5.9
5.9

Dear Client, This should not be wired like a Raspberry Pi hobby project. A 12-module tractor-battery system needs a modular field architecture where power protection, actuator control, sensor reading, and noise immunity are planned before selecting any breakout boards. I can help design a practical off-the-shelf solution without jumping into custom PCB. My focus would be: ✅ modular architecture for 12 Linak LA14 channels ✅ protected 12V power distribution with fuses, reverse polarity and transient protection ✅ suitable ADC / I/O / RS485 or I2C expansion approach instead of overloading Pi GPIO ✅ wiring diagrams, BOM and mounting notes using readily available modules ✅ clear pinout and connection documentation for build and troubleshooting I would especially focus on making the system expandable: start with fewer modules, then scale cleanly to 12. One key question: Do you prefer the strongest noise immunity approach using RS485/Modbus-style distributed modules, or the simplest build using I2C expanders/multiplexers? If you share the current module wiring or actuator specs, I can suggest the cleanest architecture before parts are purchased. Best regards, Prat PCB Must Innovations
€250 EUR in 7 days
6.4
6.4

I've read your brief on the modular control system and this is exactly the kind of firmware architecture challenge I work on daily. With over ten years in embedded development, I've shipped production systems that required precisely this level of modularity and protocol handling. I recently delivered a similar multi-node system for a building automation client using RS485 and MQTT, handling everything from the PCB layout and firmware to the 3D enclosure and full prototype shipment. I can take your requirements and deliver a working, tested system without the back-and-forth that slows most projects down. Let me know if you want to discuss the technical specifics and I'll give you a clear timeline 02 days.
€140 EUR in 2 days
3.3
3.3

Hello, I can help architect this as a rugged modular tractor-grade control platform focused on scalability, EMC resilience, and serviceability using off-the-shelf components only. For a 12-module mobile system, I strongly recommend RS485/Modbus RTU over direct I²C for superior noise immunity, cable length tolerance, and field reliability in high-EMI agricultural environments. Recommended architecture: • Raspberry Pi 5 as supervisory controller/UI • Distributed module nodes (per actuator or grouped) using RS485 transceivers • Industrial DC/DC conversion (12V battery → protected 5V logic rail) • Reverse polarity, TVS surge suppression, fuse segmentation, and load-dump mitigation • H-bridge motor drivers sized for LA14 load profile • ADC modules for Elobau/current sensing • Opto-isolated digital inputs for PWM/proximity/valve monitoring • Modular expansion from 1 to 12 channels without redesign Key priority is protecting against: • Battery spikes/cranking sag • Inductive kickback • Ground loops • Moisture/vibration • Wiring complexity Deliverables can include: • Amazon.de-focused BOM • Full wiring/schematic package • Protection strategy • Module topology • Connector pinout guidance • Mounting and enclosure recommendations My focus would be creating a prototype architecture that is electrically robust, field-serviceable, and expandable—more like practical mobile industrial automation than hobby Raspberry Pi wiring. Best regards, Engr. Muhammad Uzair
€99 EUR in 7 days
1.0
1.0

The intricate challenge of maintaining communication integrity amidst voltage fluctuations and EMI in a tractor environment is paramount for this control system. Leveraging the Raspberry Pi 5, I propose implementing an I²C architecture utilizing multiplexers to handle the simultaneous operation of 12 modules while ensuring noise immunity. The Bill of Materials will feature readily available components tailored for robustness, including protective electronics to mitigate reverse polarity and overvoltage risks. Deliverables will cover comprehensive schematic designs and mounting instructions to facilitate prototyping within 30 days. Happy to share a few early ideas, want me to put something together?
€110 EUR in 30 days
0.0
0.0

Hi, I can design a robust Raspberry Pi 5 based control architecture for your 12-module Linak LA14 tractor system. I will use RS485/Modbus or isolated I²C expanders, ADC modules, optocouplers, protected DC/DC converters, H-bridges, fuses, TVS diodes, and reverse-polarity protection for noise immunity and scalability. My approach is to keep the Pi isolated from field wiring, group each actuator module logically, and use off-the-shelf Amazon.de-ready components only. I’ll specify current sensing, 0.5–4.5V analog sensor conditioning, PNP/NPN proximity input handling, PWM/direction control, and valve monitoring with EMC-safe wiring practices. The design will include a complete BOM, power distribution concept from the 12V tractor battery, protection strategy, schematics/wiring PDF or KiCad files, and mounting instructions. I’ll also document Linak feedback wiring, grounding strategy, shielding, cable routing, fusing, load peak handling, and expansion from a few modules to all 12. I have built embedded control systems involving Raspberry Pi, RS485 devices, motor drivers, ADC sensors, industrial inputs, and outdoor 12V power environments. I’m confident I can deliver a practical prototype-ready design that is reliable, maintainable, and easy to assemble without custom PCB manufacturing. Please send any Linak LA14 datasheets/connector details you already have, and I can start defining the architecture and BOM. regards Cedric
€30 EUR in 7 days
0.0
0.0

Raggendorf, Austria
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