Our Electronic Product Design Services

Electronic Product Development

We provide full end-to-end electronic product design, from concept to manufacture:

Electronic product design and circuit design
Schematic capture and simulation
Low-power battery product design
Motor control electronics
Component selection and obsolescence management
Prototype bring-up and breadboarding
EMC pre-compliance support and CE marking support

Embedded Software Development Services

We develop firmware and embedded software in C across the ESP32, STM32, and PIC families:

ESP32 firmware development
STM32 firmware development
PIC microcontroller firmware
Real-time embedded control software (8-bit to 32-bit)
Wireless integration — Wi-Fi and Bluetooth (BLE)
Communication protocols — UART, I²C, SPI, RS-232, RS-485, CAN
Development and debug using SEGGER J-Link, ESP-IDF, STM32CubeIDE, and MPLAB X

PCB Layout and Design Service

We design PCBs from a schematic, or re-engineer them from a legacy board, using Altium 365 PCB design. Boards can be rigid, rigid-flex, or flexible.

RF PCB layout — controlled impedance, antenna matching
Mixed-signal PCB design — analogue/digital separation and grounding
Power electronics PCB layout — thermal and high-current design
Layer stack-up, copper weights, and crosstalk control
DFM review to ensure manufacturability

Every board is delivered as a complete manufacturing package: BOM generation, Gerber files, pick-and-place files, and full documentation ready for your fabricator and assembler.

Support Services

Electronic components become obsolete, are superseded by improved versions, or reach a "Last Time Buy" notice. We can help source an equivalent or replacement part where available, or redesign the PCB to integrate revised components.

We also reverse-engineer existing product lines to reduce cost, add the latest components, or introduce new functionality. Redesigning a legacy product can extend its life and help reposition it for a new market.

FREQUENTLY Asked QUESTIONS

FAQ section

What does Tomsar Engineering specialise in?
Tomsar Engineering Ltd is a UK electronics design consultancy based in West Yorkshire, specialising in embedded systems (ESP32, STM32, PIC), Altium 365 PCB design, and firmware for commercial and industrial products.

Can Tomsar take my product from concept to manufacture?
Yes. Tomsar supports the full development path — feasibility, electronic and embedded design, PCB layout, prototyping, testing and manufacturing data — taking a product from initial idea through to a manufacture-ready design.

Can Tomsar design a PCB from my schematic?
Yes. Tomsar can take an existing schematic and BOM and create a manufacture-ready PCB layout, including Gerber files, BOM, pick-and-place data and assembly documentation.

Can Tomsar develop embedded firmware?
Yes. Tomsar develops embedded C firmware for ESP32, STM32, and PIC microcontrollers, including real-time control and communication interfaces such as RS-232, I²C, SPI, RS-485 and CAN.

Can Tomsar reverse engineer an old PCB?
Yes. Tomsar can help recreate missing schematics, PCB layout data and Gerber manufacturing files from a physical or legacy circuit board.

Does Tomsar support EMC and CE compliance?
Yes. Tomsar can support design decisions, prototype testing and documentation needed for EMC and CE compliance.

Can Tomsar help with obsolete components?
Yes. Tomsar can identify replacement components or redesign the PCB and firmware where obsolete parts are no longer available.