We don't just code. We solder.
Our engineering division turns hardware concepts into physical reality, from schematic capture to DFM-ready prototypes, UL-compliant control panels to a production-ready board.
- Most software shops can't review a schematic.
- Most hardware design firms can't write the firmware.
- Splitting those two disciplines across vendors means integration problems become nobody's problem.
- Design reviews get skipped because the electrical team and the software team don't share a language.
- Prototypes pass hardware validation, then fail in the field because nobody accounted for the full system.
Letter 10 Group bridges both. Your PCB, your embedded code, and the cloud platform it connects to are all designed by people who understand the full stack.
Electrical Design
Industrial Control.
- Deliverables: Full schematics, BOMs, and wiring diagrams.
- Regulated Environments: Specialized experience designing for pharmaceutical (GMP) and food & beverage, including sterile line automation and validation support.
- Industrial Automation: Integration with PLC systems including Rockwell/Allen-Bradley and Siemens.
PCB Design & Prototyping
Idea to Prototype.
- Design for Manufacturability (DFM): We design boards that are ready for mass production, not just the lab bench.
- IoT Integration: Specialists in integrating sensors, Wi-Fi, and Bluetooth modules.
- Prototype to Production: We support you through NPI and first article inspection.
Embedded Systems & Firmware
Hardware that thinks.
- Microcontroller Development: ARM Cortex-M, ESP32, Nordic nRF series.
- RTOS & Bare Metal: FreeRTOS for timing-critical applications; bare-metal for resource-constrained designs.
- Protocol Implementation: I²C, SPI, UART, CAN bus, Modbus, BLE, Wi-Fi.
- Hardware-Software Co-Design: When the same team writes the firmware and lays out the board, integration issues surface in design, not on the factory floor.
Industrial IoT Integration
Factory floor to cloud.
- OT/IT Convergence: Bridging factory-floor operational technology with corporate IT networks securely.
- PLC Data Extraction: Reading from existing Rockwell, Siemens, and legacy PLCs via ThingWorx and Kepware.
- Edge-to-Cloud Pipelines: Data from sensors to dashboards with sub-second latency.
Compliance isn't a footnote.
We've designed for pharmaceutical GMP lines, food & beverage production, defense-adjacent supply chains, and UL-compliant industrial control systems.
Compliance isn't a footnote. It's in the design from day one.
Have a hardware concept?
From a single PCB to the factory floor electrical cabinet to software in the cloud: that's all us. We scope every engagement before committing to timelines.