Consulting

Your IoT product, from idea to factory.

Silicon Witchery designs IoT devices, with LTE-M cellular and Bluetooth at its core. We take your product from the first schematic to final testing at the lab, down to the antenna, firmware and power budget. When our S1 or S2 module fits, we can build on it to save you time.

Book a call arrow_outward How we work

Free 30-minute call · Written proposal and price before any work starts

engagement.md 
# Design
✓ Requirements and power budget
✓ Schematic, PCB and antenna
# Build
✓ Firmware and drivers
✓ Prototypes in your hands
# Certify
✓ Pre-certification testing
✓ Final testing at the lab
→ Into production
What we do

Help with one part, or the whole product.

Silicon Witchery can take on one piece of your device, such as the antenna or the camera system, or design all of it. Our work so far includes smartwatches, smart glasses, ECG and PPG health wearables, and multi-camera 3D imaging for inspection.

sensors

Wireless and antennas

LTE-M, Bluetooth and other radios, with antennas designed and tuned inside your enclosure. We plan range, coverage and battery life from the first schematic.

developer_board

Low-power electronics

Schematics and PCBs for ultra-low-power, battery-powered devices, built around the I²C and SPI sensors your product needs.

terminal

Embedded firmware

Firmware for Arm Cortex-M0 to Cortex-M33 microcontrollers, Arm Linux application processors and RISC-V, from sensor drivers to the link to your cloud.

memory

Cameras, displays and FPGAs

Multi-camera global-shutter systems, image signal processing, embedded displays, and FPGA engines that accelerate raster and vector graphics.

precision_manufacturing

Certification and production

We design for CE, FCC and UKCA from the first schematic, catch emission problems early with near-field scans, and take your product through the lab into manufacturing.

hub

Our S1 and S2 modules

When one fits, we build your product on the S2 for LTE-M and GPS, or the S1 for Bluetooth and an FPGA.

How we work

Scoped up front. Built with your team.

  1. Intro call

    A free call about what you're building, where it runs and what it has to talk to.

  2. Written proposal

    A written plan with deliverables, timeline and price before any work starts.

  3. Build with you

    We build alongside your team, with a working device early and often.

  4. Handover

    Your team gets the deliverables set in the proposal, ready for production.

Two ways to build

Start from a blank board, or skip ahead on one of our modules.

Silicon Witchery designs your product from a blank board, or builds it on the S1 or S2 when one fits. A module arrives with its radio and power circuits already designed, so your budget goes into the parts only your product has.

Designed from scratch

For products that need their own form, radio or power budget. Silicon Witchery designs:

  • The schematic and PCB
  • The antenna, tuned in your enclosure
  • The firmware and drivers
  • The path through certification

Built on our modules

The S2 brings LTE-M, GPS, a SIM, prepaid data and over-the-air code updates. The S1 brings Bluetooth, an FPGA and battery charging in 6 × 11.5 mm. Silicon Witchery designs:

  • The board it mounts on
  • The sensor drivers and code
  • The link to your systems
  • The enclosure

On the S2, Silicon Witchery maintains the firmware, the SIM and Superstack after handover. Your team maintains only its Lua.

Questions

Before you book a call.

What does Silicon Witchery design?

Silicon Witchery designs complete IoT products, or one part of them: LTE-M cellular and Bluetooth hardware, antennas, low-power electronics, embedded firmware, and camera, display and FPGA systems. Silicon Witchery's work so far includes smartwatches, smart glasses, ECG and PPG health wearables, and multi-camera 3D imaging for inspection. Silicon Witchery also makes the S1 and S2 modules, and designed Superstack.

Do I have to use Silicon Witchery's modules?

No. Silicon Witchery designs products from a blank board, and builds on its own modules only when one fits. The S2 Module fits a product that sends readings or takes commands over LTE-M in a country on the S2 coverage table, and brings the modem, GPS, antenna, SIM, prepaid data and over-the-air code updates. The S1 Module fits a small battery-powered Bluetooth device, such as a wearable, that needs an FPGA for signal processing.

Can Silicon Witchery design a carrier board for the S2?

Yes. Pads on the underside of the S2 carry all of its power and IO, so a carrier board can reach them with spring-loaded pogo pins. Silicon Witchery designs carrier boards that hold your sensors, connectors and power supply, with the S2 mounted on top.

Can Silicon Witchery help certify my product?

Yes. Silicon Witchery designs for CE, FCC and UKCA from the first schematic and finds emission problems early with near-field scans. It runs pre-certification testing, then takes your product to the lab for final testing.

Who maintains a product built on the S2?

Silicon Witchery maintains the S2 firmware, the SIM and LTE-M connectivity, and Superstack for every S2. Your team maintains its Lua code and its own systems.

Will Silicon Witchery sign an NDA?

Yes. Silicon Witchery signs an NDA before you share project details.

How is Silicon Witchery consulting priced?

Silicon Witchery quotes every project in a written proposal, which sets the scope, price, timeline and IP ownership before any work starts.

Where is Silicon Witchery based?

Silicon Witchery is based in Sweden and works with clients worldwide.

Who will I work with?

Your first call is with Raj Nakarja, the engineer who designed the S2 and Superstack.

Contact

Tell us what you're building.

Book a 30-minute call with an engineer. Prefer email? Write to info@siliconwitchery.com.

Book a call arrow_outward