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SHAH JAMAN

Capability statement

SHAH JAMAN.

Sensing instruments taken from analog front-end to pilot production — electronic percussion, bioimpedance measurement, and technical education hardware.

Entities
DBTECH Technology Co., Ltd. · INNOSINO (Shanghai) Technology Co., Ltd.
Based
Shanghai · Dhaka
Team
13 engineers across firmware, hardware, and mechanical, based at Hi-Tech Park, Baoshan District, Shanghai.
Contact
contact@innosino.com · +86 15522789541
Revised
2026-08-21

Engineering capability

Six disciplines carried in-house, applied as one product rather than handed between vendors.

Firmware development

C and C++ on bare metal and FreeRTOS. Multi-task real-time architectures, USB CDC device stacks, DMA-driven acquisition, deterministic timing under load.

  • STM32 (H7, F4 families)
  • ATmega / AVR
  • FreeRTOS task and timer design
  • Native USB CDC, JSON streaming protocols
  • Flash and EEPROM storage schemes, wear-aware layouts

STM32H743VIT6 · ATmega2560 · FreeRTOS · USB CDC

Hardware design

Schematic capture through PCB layout, with protection and manufacturability treated as first-class requirements rather than a revision-two fix.

  • Multi-board system partitioning
  • MCU I/O protection networks
  • Power rails, external supply and buck topologies
  • Connector and mechanical integration
  • BOM construction and pilot-batch sourcing

Schematic + PCB · Protection networks · Power rails · Pilot-batch BOM

Sensor and analog front-end design

The part most projects underestimate. Getting a usable signal out of a piezo, an electrode pair, or an impedance cell before any of it reaches a converter.

  • Piezo trigger conditioning and velocity extraction
  • Bioimpedance measurement paths, ratiometric technique
  • DFT-based magnitude and phase extraction
  • Noise budgeting and grounding strategy
  • Calibration and characterization procedures

AD5940 · Piezo conditioning · DFT magnitude / phase · Noise budgeting

FPGA and DSP

Verilog on Lattice iCE40 for the timing-critical paths, and integration with dedicated DSP silicon where sample quality is the product.

  • iCE40UP5K Verilog module design
  • Simulation-first verification (iverilog)
  • Multi-channel parallel trigger processing
  • DSP chip integration and sound bank architecture
  • Velocity layering and round-robin sample strategies

iCE40UP5K · Verilog · iverilog · SAM5504 DSP

Host tooling and control software

Single-file WebSerial applications that talk to the device over USB CDC with a JSON protocol. No installer, no driver hunt, works from a browser tab. Wrapped in Electron only when the product needs to live on a desktop.

  • WebSerial single-HTML control apps
  • Live streaming visualization and logging
  • CSV / JSON data export for analysis
  • Electron packaging when required
  • Reusable framework across product lines

WebSerial API · USB CDC · JSON streaming · Electron

Documentation and technical writing

Design documents, experiment manuals, IC reference material, and BOM documentation produced to a standard that survives handoff to a manufacturer or a classroom.

  • System design documents with revision control
  • Multi-session experiment curricula
  • Component reference libraries
  • Multi-language technical manual production

Design documents · Experiment curricula · Component references · Multi-language manuals

At a glance

13+
Engineers on the team
9+
Active product lines
2+
Countries of operation

Product lines and selected work

Grouped by domain. Each entry is a system this team designed, built and brought up.

Musical instruments

  • Touch Cajon Pro 9.43C

    DBTECH · In development

    A flagship electronic cajon built around an STM32H743 at 480 MHz with a 4.3-inch display — bit-identical in sound to its sibling model, but with the interface a professional player actually needs.

    Two product tiers ship from one sound engine and one firmware core, halving the maintenance surface across the line.

    STM32H743 · LTDC · SAM5504 DSP · FreeRTOS · C · WebSerial

  • Touch Cajon 9.33B

    DBTECH · In development

    An electronic cajon targeting TD-12-class sound quality, with a side-board case designed around the foot pedals players already own.

    SAM5504 DSP · ATmega2560 · FreeRTOS · W25Q512JV · C

  • Inno EDT-4X

    DBTECH · Design complete

    An FPGA-based drum trigger system with an annular piezo array — parallel velocity processing in hardware, so timing doesn't degrade under a fast roll.

    Delivered as a complete design package — three-board mechanical set, 12-module FPGA design, and a bill of materials sourced at pilot volume.

    iCE40UP5K · Verilog · iverilog · Piezo sensing · WebSerial

Biomedical & sensing

  • INNO-IMPZ v2.0

    INNOSINO · Active development

    A bioimpedance measurement instrument for cell-level research work, streaming characterized impedance data straight to a browser-based control application.

    AD5940 · ADICUP3029 · C · USB CDC · WebSerial · DFT

Education hardware

  • Logic Trainer F2

    INNOSINO · Pilot batch

    A digital logic trainer kit with a real-time browser visualization layer — students see the truth table fill in as they wire the circuit.

    Sourced and costed for a 10-unit pilot batch, shipping with a 60+ line bill of materials and an 8-session curriculum.

    ATmega2560 · 74-series logic · 74LS47 · WebSerial · Circuit protection

  • VPLT Unified DAQ STM32H743

    INNOSINO · In development

    A training platform that consolidates PLC, motor, and safety acquisition onto one microcontroller and one USB cable.

    STM32H743 · FreeRTOS · Multi-ADC · USB-C · WebSerial · Electron

  • WSN Trainer Manual Localization IOT8000

    INNOSINO · Delivered

    A Chinese-language wireless sensor network curriculum rebuilt as an 18-chapter English manual in a single self-contained HTML file.

    TinyOS · nesC · HTML · Technical documentation

Tooling

  • WebSerial Instrument Framework

    INNOSINO · Internal, open-source candidate

    The shared host-side layer under every instrument here: one HTML file, a serial port, and a JSON stream.

    WebSerial API · JavaScript · USB CDC · Electron · JSON

How an engagement runs

  1. 01

    A reply within one business day

    Usually with questions about the sensor — what it is, what it outputs, and what you have already measured.

  2. 02

    A scope, in writing

    What gets built, in what order, and what it depends on: architecture, hardware, firmware, tooling, BOM, documentation.

  3. 03

    Bring-up on real hardware

    Development happens against evaluation hardware or your existing board, with the host tooling arriving alongside the firmware rather than after it.

  4. 04

    Pilot batch, then handoff

    Sourcing and a pilot run of around ten units, with a documentation package built to survive handoff to a contract manufacturer.

Scope

Work this team takes

  • Instrument or product development from concept through pilot batch
  • Measurement systems that need a custom analog front-end
  • Firmware for hardware that already exists
  • Technical education hardware and curricula

Work it does not

  • Certified medical devices requiring IEC 60601 / ISO 13485 submission — I build research instruments, not regulated diagnostic products
  • Pure app or web development with no hardware attached

Compliance and standards

The instruments described here are research, education and industrial equipment. INNO-IMPZ in particular is a research instrument: it is not a diagnostic device, is not certified under IEC 60601 or ISO 13485, and is not intended for clinical decision-making or patient use. Engagements are scoped to designs that do not require medical-device certification.

Start a project

The most useful first message: what the sensor is, what you need to measure or produce, and where the project currently sits.

Contact

contact@innosino.com

+86 15522789541

Based

Room 1103A, Building B, 1588,

Qilianshan Road, Baoshan District,

Shanghai, China

Roland marks are referenced as bench benchmarks only; no affiliation is implied. INNO-IMPZ is a research instrument and is not a diagnostic device.

Full detail, case studies and current contact information: shahjaman.com/capability