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I need a compact 4-in-1 ESC that can reliably push 60 A per phase on up to 8 S Li-Po packs while running the open-source AM32 firmware. The brain must be an STM32 MCU, and the design has to accept Betaflight’s passthrough updater so field-flashing stays simple for end users. Hardware requirements • Power stage: 60 A continuous, 8 S (33.6 V) max, low-Rds(on) MOSFETs and gate drivers that are readily available in “Blue-compliant” (lead-free, RoHS-equivalent) versions. • MCU: any suitable STM32 line is fine as long as it meets AM32 timing, PWM and ADC constraints; I am open to your recommendation. • Sensing: at least one ADC channel per ESC for voltage and current plus spare pins for temperature or rpm hall sensors. • Telemetry: UART wired out so the flight controller reads real-time stats. • Firmware: AM32 port with Betaflight passthrough enabled, tested to make sure a user can flash from BLHeli Configurator or the Betaflight GUI. Deliverables 1. Complete schematic and routed PCB files (KiCad or Altium). 2. Manufacturable BOM with Blue-compliant parts and second-source options. 3. Pin-mapped, compilable AM32 project (CubeIDE or PlatformIO) plus compiled .hex. 4. Brief bring-up guide: how to power on safely, verify comms, and trigger the Betaflight updater. Acceptance criteria • Board passes a bench test at 60 A for 60 s on all four channels without thermal derating. • Telemetry arrives inside Betaflight at the expected refresh rate. • Firmware can be reflashed in-place through passthrough without SWD. If you have previous multi-motor ESC layouts or AM32 contributions, please mention them—seeing proven DRC-clean power routing and noise-free ADC reads will make selection quick.
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Hello, Antonie, this is Julian. I’m an embedded hardware and motor-control engineer with 8+ years of experience designing high-current ESCs and STM32-based power electronics for multirotor and robotics applications, and I’ve reviewed your 8S 60A 4-in-1 AM32 ESC requirements in detail. I’ve completed 15+ ESC and motor-driver PCB designs, including 6 multi-channel (4-in-1 / 6-in-1) layouts rated between 45A–80A per phase, all DRC-clean and manufactured successfully. For this project, I would design a compact 8S power stage using low-Rds(on) MOSFETs with >20% thermal margin, paired with a suitable STM32 (G4 or F4 series) that fully meets AM32 PWM, ADC, and timing constraints. I have hands-on experience porting and validating AM32, enabling Betaflight passthrough flashing and confirming stable telemetry over UART at expected refresh rates. My designs routinely include per-ESC current and voltage sensing, noise-optimized ADC routing, and spare IO for temperature or RPM sensing, ensuring clean readings even under high load. I provide manufacturing-ready schematics, routed PCB files, and BOMs with second-source Blue-compliant parts, along with a tested firmware project and compiled HEX. I’ve bench-validated similar boards at 60A+ continuous for 60–90 seconds without derating using proper copper pours, via stitching, and thermal balancing. Best
$1.125 USD em 7 dias
4,4
4,4
54 freelancers estão ofertando em média $1.147 USD for esse trabalho

As an experienced Electrical Engineer with a Master's in Embedded Systems, I am well-versed in all aspects of the project from circuit design and PCB layout to firmware development. I have extensive knowledge and practical experience with STM32 MCUs as well as the AM32 firmware, making me an excellent fit for your 4-in-1 ESC design. Notably, my proficiency in firmware development has a strong emphasis on embedded C/C++, RTOS, and peripheral drivers - all essential elements for a project of this nature. In previous works, I have successfully developed complex IoT products ranging from wireless sensor networks to robust motor control systems. Furthermore, my PCB design skills using tools like Altium Designer and KiCad ensure efficient and noise-free power routing to maintain high-quality ADC readings, pivotal for the project's expected performance standards. In addition to meeting your core requirements, I am committed to ensuring your overall satisfaction by providing deliverables that guarantee self-sufficiency, such as a comprehensive bring-up guide for secure operation and effective updater triggering of your AM32 8S 4-in-1 ESC Design.
$1.500 USD em 15 dias
8,1
8,1

Hi, I can design a compact 4‑in‑1 ESC (60 A per phase, 8 S max) running AM32 firmware on an STM32 MCU, with Betaflight passthrough for easy field updates—optimized for thermal performance and clean telemetry. MY APPROACH Power Stage: Select low‑Rds(on), RoHS‑compliant MOSFETs + gate drivers rated for 60 A continuous at 33.6 V; design for thermal headroom (copper pours, via stitching, heatsink pads). MCU & Sensing: Choose a suitable STM32 (e.g., STM32G0/F0/G4 series) meeting AM32 timing/PWM/ADC needs; route ADC channels for voltage/current per ESC + spare pins for temp/hall sensors. Telemetry & Comms: UART breakout for flight‑controller telemetry; verify Betaflight passthrough compatibility. Firmware: Port/configure AM32 for the chosen STM32, enable passthrough, compile .hex, and test reflash via BLHeli Configurator/Betaflight GUI (no SWD required). DELIVERABLES Schematic + routed PCB (KiCad or Altium) RoHS‑compliant BOM with second sources Compilable AM32 project + .hex Bring‑up guide (power‑on, comms check, passthrough flash) ACCEPTANCE 60 A × 60 s bench test (all 4 channels, no thermal derating) Telemetry verified in Betaflight Successful in‑place reflash via passthrough RELEVANT EXPERIENCE Multi‑motor ESC design (high‑current power routing, thermal management) STM32 firmware (motor control, ADC, UART telemetry) AM32/BLHeli ecosystem familiarity I am Ready to start immediately please confirm preferred STM32 series (if any) and target board dimensions/connector type.
$820 USD em 3 dias
6,3
6,3

Hi there, I'm Muhammad Awais, a hardware-software embedded engineer who loves clean power rails and quiet ADCs. You need a compact 4-in-1 ESC that delivers 60 A per phase on 8S, runs AM32 with an STM32 brain, and supports Betaflight passthrough flash from BLHeli Configurator or Betaflight GUI. I’ll design a robust, RoHS-friendly power stage with low-Rds(on) MOSFETs, precise current/voltage sensing on every ESC, and spare pins for temp or RPM sensors. Telemetry will be on UART so your flight controller sees real-time stats. Deliverables: schematic and routed PCB files (KiCad or Altium); a manufacturable BOM with blue-compliant parts and second sources; a pin-mapped AM32 project (CubeIDE/PlatformIO) plus compiled .hex; a brief bring-up guide to power on safely, verify comms, and trigger the Betaflight updater. Approach: pick a suitable STM32 for AM32 timing, plan clean power routing with separate analog/digital grounds, and lay out a compact 4-in-1 with solid decoupling. Port AM32 firmware with Passthrough, then bench-test at 60 A per channel to confirm no thermal derating and proper UART telemetry rate. I’ll document decisions and provide build instructions and a tester’s checklist for easy field use. 4-5 essential questions for you: Do you have preferred MOSFET vendors or footprints for blue-compliant parts? What are your target board dimensions and weight? How many ADC channels do you require for sensing (per-ESC + spare) and any specific sensor types? What UART baud ra
$1.500 USD em 21 dias
6,0
6,0

Hello mate, When i seen the details "AM32 8S 4-in-1 ESC Design" which you are searching. I am super exited to start it ASAP! I have many software's & tools for make it- Ki Cad, Autodesk EAGLE, Altinum, Circuit board design, Autodesk fusion 360 etc. Make 2d & 3d both I will share update within it in 1-2 Hours. WILL SHOW YOU SOME PAST OF WORKS Best regards, Manu R.
$761 USD em 1 dia
5,3
5,3

Hello, I understand you’re looking for a compact, high-current 4-in-1 ESC design capable of 60 A continuous per phase on up to 8S Li-Po, running AM32 on an STM32 MCU with full Betaflight passthrough support. I have experience designing high-power motor control hardware, including multi-channel ESC layouts, STM32-based control stages, low-noise current/voltage sensing, and firmware bring-up aligned with open-source ecosystems like AM32. My focus is always on electrical robustness, thermal margin, and manufacturability. For this project, I will design a DRC-clean schematic and PCB with carefully routed power stages, low-Rds(on) MOSFETs, robust gate drivers, and proper current paths to sustain 60 A across all four channels without derating. I’ll select an STM32 variant that comfortably meets AM32 timing, ADC, and PWM constraints, map telemetry and sensing correctly, and deliver a working AM32 port compatible with Betaflight passthrough flashing. The BOM will use Blue-compliant parts with realistic second sources, and I’ll provide a clear bring-up and validation guide covering power-on, telemetry checks, and firmware updates. You’ll receive a production-ready hardware and firmware package designed for real-world use and future revisions. Thanks Asif.
$1.500 USD em 11 dias
5,2
5,2

⭐⭐⭐⭐⭐ Senior PCB & Firmware & Prototyping Engineer Here! ⭐⭐⭐⭐⭐ Hello! I have checked out your project details and I am confident that I can finish your project perfectly. I can design a compact, race-grade 4-in-1 ESC that reliably delivers 60 A per phase on up to 8 S while remaining fully compatible with AM32 and Betaflight passthrough flashing. I have direct experience laying out high-current multi-motor ESCs, selecting low-Rds(on) MOSFETs and robust gate drivers, and validating designs for sustained thermal and electrical stress. For this project I would recommend a proven STM32 variant already supported by AM32, map ADC channels cleanly for voltage and current sensing with low-noise layout techniques, and expose UART telemetry exactly as Betaflight expects. The PCB will prioritize short power loops, solid ground referencing, and balanced copper for efficient heat spreading without unnecessary weight. I will deliver DRC-clean schematics and routing, a sourcing-ready BOM with Blue-compliant parts and alternates, and a tested AM32 build that flashes via Betaflight passthrough without SWD. My workflow includes bench validation guidance so you can confidently hit the 60 A acceptance targets. Looking forward to discussing more details. Regards, Mykola
$1.125 USD em 15 dias
5,1
5,1

As a seasoned electrical engineer with demonstrated prowess in Circuit Design and Microcontroller programming, I'm supremely confident that I have what it takes to create the impeccable ESC design you seek. Having worked extensively with diverse projects including ESP32, Arduino, and even Raspberry Pi, demonstrates my knack for choosing the right components to ensure optimal performance; harnessing this skill set in your project equates to a perfect fit. In addition to my expertise in Electrical Engineering and Electronics, I've specialized in PCB designing utilizing KiCad and altium which aligns perfectly with your requirements for schematic and routed PCB files. My thorough understanding of STM32 line MCU's is essential for executing your AM32 firmware needs, ensuring timing, PWM, and ADC constraints are adhered to accordingly. To accelerate your selection process further, I have successfully worked on multi-motor ESC layouts similar to your request. My designs always prioritize DRC-clean power routing and noise-free ADC reads, both of which will be instrumental in achieving a smooth bench test and seamless telemetry integration into Betaflight. Lastly, given my experience extends to challenging global projects
$1.125 USD em 7 dias
5,2
5,2

Hi there! Power density at 8S with four motors gets unforgiving fast, especially when firmware timing, ADC noise, and passthrough flashing all have to coexist on the same board. To resolve this, I’d structure the ESC around a mid-range STM32 (F303 or G431) with center-aligned PWM timers, isolated ADC sampling windows, and tight gate-drive loops, while keeping AM32’s passthrough path electrically clean for field updates. ? This is exactly the type of high-current ESC hardware I build. ? Designed 6S–8S multi-motor ESCs using STM32F3/G4 with low-Rds(on) MOSFETs and external gate drivers ? Routed DRC-clean power stages (50–70 A) with stable ADC current sensing under switching noise ? Ported and validated AM32 targets with UART telemetry and Betaflight passthrough flashing Happy to review your current constraints or walk through a reference power-stage layout before locking parts. Top Rated with 100% job success, delivering firmware and hardware that survive real current, not just simulations. Best regards, Safeer Ahmad
$1.400 USD em 7 dias
5,1
5,1

Hello! With our expertise in Embedded Systems and PCB Design, we are ready to tackle your AM32 8S 4-in-1 ESC project. We will craft a compact design capable of pushing 60 A per phase on up to 8 S Li-Po packs, integrated with the open-source AM32 firmware running on an STM32 MCU. Our team will ensure the ESC's reliability and compatibility with Betaflight's passthrough updater for user-friendly field-flashing. We use KiCad for schematic and PCB design, guaranteeing a high-quality deliverable aligned with your hardware and firmware requirements. Let's discuss the details further!
$750 USD em 1 dia
4,7
4,7

Hi, I am a US-based certified electronics, embedded firmware, and automation engineer with hands-on experience designing high-current 4-in-1 ESCs and deploying AM32-based motor control solutions for multirotor and robotics platforms. I have previously delivered 6–8 S ESC designs in the 60–70 A class using STM32 F3/F4/G4 MCUs, low-Rds(on) Blue-compliant MOSFETs, and noise-optimized power and current-sense layouts that passed sustained bench and thermal testing. For this project, I will architect a compact 4-in-1 ESC capable of 60 A continuous per phase at 8 S, select an STM32 fully compliant with AM32 PWM, timing, and ADC requirements, and implement per-ESC voltage/current sensing with expansion for temperature or Hall-RPM inputs. You will receive complete schematics and routed PCB files (KiCad or Altium), along with a production-ready BOM featuring Blue-compliant components and vetted second-source options. I will deliver a fully pin-mapped, compilable AM32 firmware project (CubeIDE or PlatformIO), validate Betaflight passthrough flashing via Betaflight and BLHeli Configurator, and confirm reliable UART telemetry inside Betaflight. A concise bring-up and validation guide will be included, covering safe power-on, communication checks, 60-second 60 A bench validation, and in-field firmware reflashing without SWD. Best regards. Jared
$1.200 USD em 7 dias
4,7
4,7

Best AM32 8S 4-in-1 ESC Design & Bring-Up Partner ⭐⭐⭐⭐ Hi, Thanks for outlining the requirements so clearly. I’ve supported high-current, multi-channel ESC and power-electronics designs where clean power routing, reliable sensing, and system compatibility were critical from day one. Your AM32-based 8S 4-in-1 ESC is very achievable with the right component selection and layout discipline. The goal is simple: deliver a compact, manufacturable 4-in-1 ESC that can reliably sustain 60 A per phase on 8 S packs, operates cleanly on an STM32-based control platform, and supports Betaflight passthrough updating for end users. ✅ How I’ll Help You Succeed 1. Select a suitable STM32 MCU and power-stage architecture that meets AM32 timing, ADC, and PWM requirements while remaining supply-chain friendly. 2. Design a robust 60 A / 8 S power stage using low-Rds(on), Blue-compliant MOSFETs and a proven gate-drive topology with proper dead-time control. 3. Implement voltage, current, and telemetry sensing with clean signal integrity to ensure stable Betaflight reporting. ✅ I’ve delivered high-current motor-drive and ESC designs where thermal management, noise control, and system integration had to work together seamlessly. ✅ Before I start, one quick thing: do you have a target board size or stack height in mind, and is there a preferred connector footprint for battery and motor outputs? Best regards, Prat PCB Must Innovations
$1.000 USD em 12 dias
6,5
6,5

Hello, With an extensive background and passion in circuit design, electrical engineering, and microcontroller programming, I believe I'm a great fit for the AM32 8S 4-in-1 ESC Design project. My ability to understand complex firmware interactions and my experience with multidisciplinary projects directly aligns with the specific needs of this endeavor and your hardware requirements. Given the nature of this project, I want to assure you that I’m no stranger to working with high-power modules such as MOSFETs and gate drivers, and managing consequential variables such as temperature regulation. As an added advantage, I have experience using both KiCad and Altium for PCB design which will enable me to provide you with comprehensive deliverables including manufacturing-ready BOM and detailed schematic diagrams. I have also developed my skills in noise-free ADC reading during my time working on similar open-source firmware-based projects which required me to implement effective telemetry that ensured real-time stats integration. These experiences not only reflect my proficiency but also prove my ability to meet your acceptance criteria. Rest assured, choosing me for your project means selecting a dedicated professional that values precision, efficiency, and quality. Let's create flawless AM32 8S 4-in-1 ESC together! Thanks!
$750 USD em 2 dias
4,0
4,0

As an experienced electrical engineer with a deep understanding of circuit design and PCB layout, I am uniquely positioned to deliver a professional and efficient design for your AM32 8S 4-in-1 ESC. Over the years, I have tackled various complex engineering challenges and successfully navigated through them. This has provided me with a keen eye for detail, enabling me to create designs that not only meet but exceed industry standards, something that is crucial for a project of this nature. Additionally, my proficiency in using tools like KiCad and Altium plays a significant role in ensuring the delivery of high-quality schematic and routed PCB files which meet all your hardware requirements. Furthermore, my knowledge in MCU choice and firmware adaptation will ensure that we incorporate the suitable STM32 line for your project, including making it AM32 timing, PWM, and ADC compliant. Lastly, I want to emphasize how my previous layouts and AM32 contributions add value to my candidacy for this project. My layouts are known for their robust and noise-free ADC reads while maintaining clean power routing; qualities essential to your project's function and effectiveness.
$1.000 USD em 7 dias
4,0
4,0

✅ Okay, I got what you want exactly. I am a senior embedded hardware & motor control engineer with over 10 years of experience, providing STM32-based ESC design, high-current power electronics, AM32/BLHeli firmware integration, and drone flight controller interoperability. In my opinion, this ESC should be designed with a thermally balanced 4-layer stackup, ultra-low-inductance power loops, and carefully filtered current sensing to keep AM32 timing clean at 8S. I would focus on gate-driver placement, Kelvin sensing, and ADC noise isolation so Betaflight telemetry stays stable even under 60 A load. This project is very similar to my previous works. I recently designed a 6S 55 A 4-in-1 ESC using STM32G431 with inline shunt current sensing and UART telemetry validated in Betaflight, including passthrough flashing without SWD. I also worked on a standalone 8S single-channel ESC where I selected Blue-compliant MOSFETs, validated 70 A burst current, and tuned AM32 deadtime and PWM frequency for thermal stability. ✅ So, I will divide your project like following: ⚡ System architecture, MCU selection, and power stage component validation ⚡ Schematic design with sensing, telemetry, and passthrough support ⚡ High-current PCB layout, DRC cleanup, and thermal optimization ⚡ AM32 porting, pin mapping, Betaflight passthrough testing ⚡ Bench bring-up, load testing, and documentation delivery Best regards, Yaroslav
$1.125 USD em 7 dias
3,5
3,5

⭐⭐⭐⭐⭐ Hi, I’ve read this carefully and this is a serious ESC—not a hobby layout. You’re looking for a compact 4-in-1, 60 A/phase, 8 S ESC with clean power routing, noise-stable sensing, and a proper AM32 + Betaflight passthrough implementation so end users never have to touch SWD. I understand the acceptance criteria and what will actually be tested on the bench. I’m an embedded power electronics engineer with direct experience designing high-current multi-motor ESCs using STM32 MCUs, low-Rds(on) MOSFET stages, and AM32/BLHeli-class firmware stacks. I’m comfortable selecting STM32 parts that meet AM32 timing/ADC constraints, designing gate-drive layouts that survive sustained current, and keeping ADC telemetry clean in a noisy environment. What I’ll deliver: • Full schematic + routed PCB (KiCad or Altium) • Blue-compliant BOM with alternates • AM32 port (CubeIDE or PlatformIO) + compiled HEX • Bring-up and passthrough flashing guide Milestones: Power stage & MCU architecture selection Schematic + DRC-clean PCB routing AM32 port, telemetry & passthrough validation Bench bring-up support I design for manufacturability, thermal margin, and field usability, not just peak specs. Quick checks before locking scope: • Target PCB size / mounting pattern? • 4-layer or 6-layer preference for current density & EMI? If you want proven power routing and firmware that flashes cleanly in Betaflight, I’m ready to start.
$750 USD em 1 dia
3,0
3,0

Hi, this is Mohand, a talented electrical and electronics engineer with deep expertise in high-power ESC designs for drones and RC applications, including multiple 4-in-1 boards handling 60A+ on 6-8S LiPo packs using STM32 MCUs and open-source firmwares like AM32 and Bluejay. I've successfully designed and prototyped compact ESCs with low-Rds(on) MOSFETs (e.g., Infineon BSC series), robust gate drivers, and precise ADC sensing for voltage, current, and temp, ensuring thermal stability under sustained 60A loads without derating, as validated in my bench tests for freestyle quad projects. I'll deliver complete schematics and routed PCB files in KiCad (or Altium if preferred), featuring noise-isolated power stages, DRC-clean high-current routing, spare pins for hall sensors, and Blue-compliant BOM with second-source options for easy manufacturing. The package includes a pin-mapped, compilable AM32 firmware project (PlatformIO-based) with .hex files, tested for seamless Betaflight GUI reflashing and real-time telemetry at expected rates. My prior multi-motor layouts have demonstrated rock-solid comms, thermal performance (60A x 60s per channel), and field-updatable firmware, drawing from my embedded systems work in drone electronics and Fusion 360 PCB exports. Let's get this manufacturable design prototyped quickly
$1.000 USD em 7 dias
3,0
3,0

As an industry-leading multidisciplinary studio, we pride ourselves on our ability to turn complex concepts into reliable and production-ready solutions. Our team brings several years of experience in circuit design, electrical engineering, and PCB layout, making us the perfect candidate for your AM32 8S 4-in-1 ESC project. We understand your requirement for a compact 4-in-1 ESC with 60 A per phase on up to 8S Li-Po packs running AM32 firmware. Having worked on numerous similar projects before, we can assure you that we have an in-depth understanding of the necessary hardware and firmware specifications needed to meet your demands. Furthermore, our familiarity with Betaflight's passthrough updater means we can guarantee simple field-flashing for end users. Quality is at the core of everything we do - from clean power routing to noise-free ADC reads. Our proven history of DRC-clean power routing and successful noise management in previous multi-motor ESC layouts make us confident that we can not only meet but exceed your expectations. Moreover, we are more than well-equipped to produce detailed deliverables including comprehensive schematics, manufacturable BOMs, compiled firmware code and a step-by-step bring-up guide. In short, choosing our team will not only give you peace of mind about timely delivery but maximum performance as well.
$1.100 USD em 3 dias
2,6
2,6

Hello there, I am excited about the opportunity to work on your project for a compact 4-in-1 ESC that meets the specific requirements you have outlined. With a focus on utilizing an STM32 MCU, ensuring compatibility with the AM32 firmware, and incorporating features like Betaflight's passthrough updater, I am confident in my ability to deliver a high-quality solution that aligns with your needs. My expertise in hardware design, schematic creation, and PCB layout will enable me to provide the necessary deliverables for this project. Regards, anilptk
$1.100 USD em 5 dias
2,1
2,1

With over a decade of experience in circuit design, electrical engineering, and PCB design, I am well-equipped to take on your AM32 8S 4-in-1 ESC project. Having worked extensively with STM32 MCUs and AM32 firmware over the years, I am confidently familiar with their timing, PWM, and ADC constraints. Additionally, I have a proven track record of providing clean power routing and noise-free ADC reads. In regard to the specific requirements of your project, I can assure you a compact 4-in-1 ESC design that not only meets but exceeds your specified power needs of 60 A per phase on up to 8 S Li-Po packs. My expertise in sourcing readily available components will ensure compliance with RoHS standards and make second-sourcing options easier for you. Moreover, my knowledge extends beyond hardware design as I am fully capable of developing a pin-mapped, compilable AM32 project (in CubeIDE or PlatformIO) for you. Lastly, let's not forget the importance of a concise bring-up guide for end-users - it'll definitely be included in the deliverables.
$750 USD em 7 dias
2,3
2,3

Hi, I have designed high-current multi-channel motor controller PCBs using STM32 MCUs, including power-stage layout, current sensing, and UART telemetry for flight controllers. On a previous drone project, I ported and tested open-source ESC firmware on custom hardware and verified reliable flashing through Betaflight passthrough. I'd love to share my experiences with you. Best regards, Tab
$1.000 USD em 7 dias
2,1
2,1

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