Automotive Pi Interface PCB

@markoa7

I’ll design a compact two-layer PCB that accepts 12 V from the vehicle and delivers a 5 V rail for the Raspberry Pi 5, while keeping noise out of the Pi’s camera and Wi‑Fi. The board will output four live signals, battery voltage, load current, tach edges via an optocoupler, and the oil sender input through the ADS1115 on the Pi. A board-mounted calibration resistor fixes the oil path. Delivery includes a schematic with labeled parts, a KiCad (two-layer) PCB layout with manufacturing notes, a complete BOM, and Gerber/drill files. I will bench-test on a lab supply and then validate in-car to ensure clean 5 V under cranking and accurate ADC readings. A key point to discuss is How strict are the 5 V rail transient specs during cranking, and should the design incorporate galvanic isolation for the ADC/Pi signal paths?. Marko Aleksic.

@tshibsamuel477

Hi there, I have carefully reviewed your requirements for a single automotive PCB that powers a Raspberry Pi 5 from the vehicle’s 12 V system while monitoring battery voltage, load current, tachometer pulses, and oil pressure. My experience covers automotive power electronics, Raspberry Pi interfaces, ADC signal conditioning, current/voltage sensing, optocouplers, protection circuits, and two-layer PCB design. I have already worked with the main technologies involved, including high-current DC regulation, ADS1115 interfaces, shunt current sensing, tachometer isolation, and 40-pin Raspberry Pi headers. I can handle the complete schematic and PCB design in KiCad, including automotive transient/reverse-polarity protection, low-noise 5 V regulation, sensor conditioning, thermal/current calculations, DFM checks, BOM, and fabrication-ready Gerbers. I will also ensure the power stage is appropriately designed for cranking conditions rather than relying on a basic 12 V buck converter. Given my skillset, I can complete this efficiently and provide a clean, production-ready design. Send me a message with the vehicle and sensor specifications, and I can start immediately. Best regards, Samuel tshibangu

@tetianam8

⭐⭐⭐⭐⭐ Hi, I can design this as a complete KiCad two-layer automotive interface board, with the power supply, ADC measurement circuits, tach isolation, and Raspberry Pi mechanical interface treated as one integrated design. The most important part is making the 12 V input robust enough for an actual vehicle environment. I would design the input and buck stage with appropriate protection, filtering, current/thermal margin, and layout of the high-current switching loops so the 5 V rail remains stable during normal operation and cranking conditions. For the measurement side, I would carefully scale and filter the battery-voltage and shunt-current signals for the ADS1115, while protecting the ADC inputs. The tachometer input would use the specified optocoupler arrangement to isolate ignition noise and provide clean logic-level transitions. The oil-sender signal would include the required precision PCB-mounted resistor so the calibration remains consistent. The work would include: Schematic and component selection KiCad PCB layout and mechanical integration Power/transient and mixed-signal layout review ERC/DRC and manufacturability checks BOM with distributor part numbers Gerbers, drill files and manufacturing notes Please provide the expected Pi current draw, tachometer signal characteristics, maximum battery/load current, and oil-sender output range. With those details I can select the power and sensing components appropriately and define the final design architecture.

@timl42

With over a decade of experience in electrical engineering and circuit design, I am confident that I can create the Automotive Pi Interface PCB that you require. As an expert in PCB design with proficiency in OrCAD, PADS, and Altium, I have successfully fabricated numerous single- and multi-layer boards similar to your project, offering high preciseness and reliability even under challenging conditions. Specifically, I specialize in Power Electronics PCBs, which aligns perfectly with the main requirement of precisely regulating 12V to 5V while keeping noise level low. Besides that, my experience in Analog & Digital Circuit design would ensure optimal functioning of voltage monitors, tachometer line decoupling using optocoupler, and oil-sender wire signal routing with a mounted precision resistor on the PCB for stable calibration. This guarantees not only a clean 5V output but also accurate ADC readings.

@yaroslavmark

Hi, I have experience designing automotive/industrial power and mixed-signal hardware with 12–24 V protected inputs, high-current DC/DC conversion, current sensing, ADC conditioning, opto-isolated inputs, and MCU/SBC interfaces. I have designed boards with 10+ protected I/O channels and production-ready power stages using TVS, reverse-polarity, over-current, filtering, thermal management, and accurate analog sensing. Approach ✅ I will design the automotive 12 V front end and low-noise 5 V high-current buck stage with cranking, surge/load-dump, reverse-polarity, and input filtering protection. ✅ I will implement calibrated battery-voltage/current sensing, tachometer optoisolation, and the oil-sender resistor/interface with ADS1115-safe voltage ranges and filtering. ✅ I will lay out the 2-layer PCB around the right-angle Pi 40-pin header with short high-current paths, solid grounding, thermal copper, accessible terminals, DRC/DFM, and fabrication outputs. Questions ✅ What maximum Raspberry Pi 5 load current and minimum battery voltage during engine cranking should the 5 V rail maintain? ✅ What are the tachometer signal amplitude/frequency and oil-sender resistance/voltage range so I can size the protection and ADC scaling correctly? Best, Yaroslav

@Mahmoud00Ibrahim

Hello, I’m an Automotive Hardware Engineer specialized in PCB design and embedded hardware. I can design this complete automotive PCB, including the protected 12V-to-5V power stage for Raspberry Pi 5, battery voltage/current sensing, isolated tachometer input, and oil-sender interface. I’ll deliver the complete KiCad schematic, PCB layout, BOM with distributor PNs, and manufacturing-ready Gerbers/drill files, with proper automotive protection, filtering, grounding, and test points for reliable in-car operation. I have hands-on experience designing automotive power and signal-interface boards, including transient protection and noisy vehicle environments.

@hayat38402

Hi, how are you doing? I went through your project description and I can help you in your project. your project requirements perfectly match my expertise. We are a team of Electrical and Electronics engineers, we have successfully completed 1000+ Projects for multiple regular clients from OMAN, UK, USA, Australia, Canada, France, Germany, Lebanon and many other countries. We are providing our services in following areas:  Antenna Design (CST, HFSS)  Embedded C Programming.  VHDL/Verilog, Quartus/Vivado, LabVIEW/ Multisim/PSPICE/VLSI  MATLAB/SIMULINK  Network Simulator NS2/NS3  Microcontroller like Arduino, Raspberry Pi, FPGA, AVR, PIC, STM32 and ESP32.  IDEs like Keil MDK V5, ATmel studio and MPLab XC8.  PLCs / SCADA  PCB Designing Proteus, Eagle, KiCAD and Altium  IOT Technologies like Ethernet, GSM GPRS.  HTTP Restful APIs connection for IOT Communications. Also, we have good command over report writing, I can show you many samples of our previous reports. Kindly consider us for your project and text me so that we can further discuss specifically about your project's main goals and requirements.

@shykhAbubakar

Hi, I am ready to design your automotive Raspberry Pi 5 interface PCB with a clean 12V-to-5V buck regulator, automotive-grade noise filtering, battery voltage and current sensing, optocoupler-isolated tachometer input, and oil-sender signal for ADS1115, all connecting through an on-board 40-pin right-angle header, following IPC-2221, IPC-7351, IEC 61000-4, and ISO 7637 standards. Project Deliverables Complete schematic PCB layout BOM Gerber and Drill files Could you please clarify: Q1: What is the Pi's expected current draw at the 5V rail? Q2: Do you have any preference for the buck converter topology, connector type, or PCB outline dimensions? I have over 8 years of experience in automotive power and sensor interface PCB design. Similar projects I have done: · Automotive Raspberry Pi Power/Sensor Interface PCB with Isolated Tachometer Input · 12V-to-5V Automotive Regulator Board with Battery Voltage/Current Monitoring Software I can use: KiCad/Altium Designer I'm ready to start immediately and look forward to receiving your current draw specification and connector preference. Thank you! Warm regards, Abubakar

@maksymstel

Okay, I got what you want exactly. I am a Full Stack Engineer Embedded Engineer with 10 years of experience, providing automotive power electronics, Raspberry Pi interfaces, DC-DC converters, ADC sensing, tachometer signal conditioning, and KiCad PCB design. In my opinion, the key is to treat this as an automotive power and signal-integrity design rather than a simple 12V-to-5V converter. I would design the 5V rail with adequate transient protection and filtering, while isolating noisy tach signals and carefully scaling battery voltage, current, and oil-sender signals for accurate ADS1115 measurements. This project is very similar to my previous works. I have designed battery-powered embedded boards with regulated supplies, current/voltage sensing, protected digital inputs, and MCU/Raspberry Pi interfaces. I also have experience with compact 2-layer layouts, connector integration, grounding, filtering, and production-ready manufacturing files. So, I will divide your project into three major steps. 1️⃣ Design the power, sensing, tach isolation, oil-sender interface, and Raspberry Pi header. 2️⃣ Create the compact 2-layer KiCad PCB with optimized grounding, filtering, and connectors. 3️⃣ Validate DRC/DFM and deliver BOM, Gerbers, drill files, and complete KiCad project. Via private chatting or meeting, I will provide the creative idea and good tech solution for your project. Best regards. Maksym

@nishanthamahesh

Dear Sir, I am an experienced embedded system developer. I have expertise in designing electronic circuit and multi-layer PCB. I would like to provide my full effort for your project. Best Wishes

@caodx

Hello, I can design this complete automotive Raspberry Pi interface board from schematic through production-ready PCB. My background is in mixed-signal electronics, power supplies, embedded systems, and PCB design using Altium Designer. The design will include a low-noise automotive 12V-to-5V buck converter sized for Raspberry Pi 5 operation, battery voltage monitoring, high-side current sensing, opto-isolated tachometer input, and precision oil-sender signal conditioning for ADS1115 measurements. Special attention will be given to cranking transients, EMI reduction, grounding strategy, and protection against vehicle electrical noise. I will provide the schematic with footprints assigned, PCB layout, manufacturing documentation, BOM with distributor part numbers, and final Gerber/drill files for fabrication. The PCB will include the right-angle 40-pin Raspberry Pi header, field wiring terminals, and mounting holes. Before starting, I would review the tachometer signal characteristics, oil sender specifications, and expected Pi power consumption to ensure accurate measurement performance and stable operation in a vehicle environment. I can deliver the project in Altium or KiCad depending on your preference.

@soniaer987

I would design the buck front end and the tach optocoupler isolation with that abuse in mind from the first schematic. → I've shipped custom PCBs for Pi-based systems (air quality monitor, vending controllers) with clean power rails and ADC sensing. → I'll deliver the KiCad schematic, routed 2-layer layout, BOM with distributor part numbers, and Gerbers — buck to solid 5V, high-side divider plus shunt, opto-isolated tach, on-board oil-sender resistor, right-angle 40-pin header, JST/screw terminals, four mounting holes. → Schematic and layout in about a week, ready for your bench and in-car testing.

@uzairelectronics

Hello, I can design this complete automotive Raspberry Pi 5 power and sensor PCB in KiCad, including schematic, PCB layout, BOM, and Gerber/drill files. I have experience with power regulation, ADC signal conditioning, current sensing, optocoupler isolation, and Raspberry Pi interfaces. I’ll design a robust 12 V to 5 V supply with proper filtering and protection for automotive cranking and electrical noise. The battery voltage/current sensing will be separated into clean ADS1115-compatible ADC channels with appropriate scaling. I’ll also isolate the tachometer input and route the oil-sender signal through the required precision PCB-mounted resistor. The 40-pin right-angle Pi header, connectors, mounting holes, footprints, and manufacturing requirements will be included. I’ll provide a production-ready two-layer layout and complete BOM with distributor part numbers. I can also support bench testing and troubleshooting to ensure the 5 V rail and ADC readings meet your acceptance requirements. Best regards, Engr. Muhammad Uzair

@aribaumer

Hi! I can design your custom automotive Raspberry Pi 5 interface board to deliver a clean five-volt supply and safely isolate all vehicle signals. The main issue that tends to get tricky in vehicle power design is handling extreme voltage spikes and sudden drops during engine cranking. I address this by placing robust TVS diodes at the main input alongside an automotive-rated buck regulator to keep the supply line strictly stable. One thing I would like to confirm is the maximum peak current your Pi setup will draw when running heavy workloads. Recently, I have designed and built a similar vehicle power management PCB using KiCad for embedded Linux hardware. That board integrated synchronous buck converters, optocoupled inputs for noisy engine signals, and precision current-sensing shunts that delivered highly accurate ADC readings. I routed the entire layout with wide power traces and dedicated ground planes to shield the sensitive camera lines from external electrical noise. Best, Ariba

@elijahhmonreal

Hi there, I'm a PCB Design Engineer with 12+ years' experience in automotive and embedded systems, specializing in power management and multi-signal conditioning. Your Raspberry Pi automotive interface is exactly my wheelhouse, I've designed dozens of 12V automotive supplies with noise isolation and sensor integration for harsh in-vehicle environments. I'll deliver a production-ready design featuring a robust synchronous buck converter (likely an LM5133 or TPS5410) tuned for rock-solid 5V output under cranking transients, precision voltage and current-sense networks scaled for the ADS1115, optocoupler-isolated tachometer conditioning, and a properly routed oil-sender front-end. The 40-pin right-angle header will mount directly, and all sensing traces will be laid out with ground planes and star-grounding to eliminate noise coupling to your camera and Wi-Fi. You'll receive a fully annotated KiCad schematic with part numbers, a manufacturing-ready two-layer layout, a complete distributor BOM, and Gerber/drill files. I'll include test points and layout notes so your bench validation and in-car tuning are straightforward. Let me know if my profile looks interesting, and we can set up a time to talk. Best regards, Elijah M

@SidUSA

Hi, Quantum Code Solutions is available to transform your vehicle power and signal conditioning needs into a polished, custom PCB solution. The core of a high-end Raspberry Pi 5 hardware integration lies in robust buck regulation and clean signal isolation to ensure live read-outs for battery voltage, load current, tach pulses, and oil pressure remain responsive and noise-free. We plan to utilize a synchronous step-down regulator alongside optocoupled inputs and precision resistor networks to map your signals cleanly into the ADS1115 while shielding the Pi from Automotive transients. Recently, our team delivered a custom automotive sensor interface board for a vehicle telemetry project using KiCad. We designed a clean power regulation circuit and isolated input stage that handled real-time data streaming for high-noise automotive signals. We corrected ground loop issues and built a structured schematic that allowed them to deploy the same board design reliably under active engine loads. Our work made the hardware interface robust for edge computing and streamlined their overall system assembly. Let's discuss in more detail now. Reach out to initiate a conversation! Best regards, Quantum Code Solutions

@nicolasarmandoc

Hello, The main challenge here is making the 5 V rail and signal conditioning reliable in a real vehicle environment, especially during cranking and ignition noise. I’d design the two-layer PCB around an automotive-tolerant buck regulator with appropriate input protection and filtering, then separate the battery voltage/current sensing, optocoupled tachometer input, and oil-sender ADC path so noisy signals do not compromise the Raspberry Pi supply or measurements. I’d use KiCad for the schematic and PCB, including the onboard 40-pin right-angle header, fixed calibration resistor, connectors, mounting holes, labeled footprints, and manufacturing notes. The BOM would include distributor part numbers, followed by ERC/DRC checks and verification of clearances, grounding, trace sizing, and power integrity before generating Gerbers and drill files. What is the Raspberry Pi 5 peak current you expect during startup, and do you have a target maximum input voltage for the vehicle battery line? I’d focus the design around clean 5 V output and measurements that can be validated directly against your bench and in-car tests. Nicolas

@lucasf155

That sounds exciting ✨ I understand you need a vehicle-grade, two-layer PCB that protects the Raspberry Pi 5 from a harsh 12V automotive environment, while accurately conditioning battery voltage/current, tachometer pulses, and the oil-sender signal. The key challenge is making the 5V rail stable during cranking and transients while keeping switching/ignition noise away from the Pi's camera, Wi-Fi, and ADC measurements. I’d design this with automotive transient protection, appropriate input filtering, a robust synchronous buck stage, carefully placed current sensing, protected ADC inputs, and deliberate grounding/layout. I’d also validate the tach optocoupler interface for clean logic transitions and keep the oil-sender conditioning/calibration resistor physically fixed on the PCB as requested. What skills I have ☑️ Power: Buck/synchronous converters, 12 V→5 V regulation, transient protection, filtering, power integrity ☑️ Analog: Voltage dividers, shunt current sensing, ADC conditioning, precision resistors, calibration ☑️ Digital: Optocoupler tach interface, pulse conditioning, Raspberry Pi GPIO/ADC interfaces ☑️ PCB: KiCad, two-layer layout, grounding, return paths, thermal considerations, DFM

@ryoichir

hello, there? I understand you need a vehicle-grade PCB that takes a noisy 12V battery input, provides a stable 5V supply for a Raspberry Pi 5, and safely measures battery voltage, current, tachometer pulses, and oil-sender pressure through the ADS1115. The main challenge is protecting the Pi from automotive electrical noise and cranking transients while maintaining accurate sensor readings. I will design the circuit with a suitable buck power stage, protected voltage and current measurement inputs, optocoupled tachometer isolation, and a properly routed oil-sender signal path with the calibration resistor fixed on the PCB. I will also include the Raspberry Pi 40-pin header, vehicle connectors, mounting holes, labeled schematic, assigned footprints, BOM, manufacturing notes, and fabrication files. My approach is to create the KiCad design, review power and signal paths carefully, verify the layout for two-layer manufacturing, and deliver files ready for prototype testing. thanks.