Microcontroller Boards
LEDs

Anwaar (أنوار)

Hardware Platform for Personal, Portable PCB Tokens

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Anwaar, which is Arabic for "a collection of lights," combines art and circuitry into a convenient, attractive, wearable medium of expression. Each of our products includes a microcontroller, power-management circuitry, breakouts, a hybrid supercapacitor, and a beautifully designed faceplate, which is where the magic happens. You can wear your Anwaar as a necklace or brooch, hang it as an ornament, carry it as a pocket token, build it into a product, or put it to use in a million other ways.

The Extended Anwaar Family

The Anwaar collection will include several different families of boards that differ in size, shape, and microcontroller location. All families share certain design principles, however. They are all two-piece products that include a baseboard connected to a faceplate by a low-profile header and M.2 machine screws. faceplates are swappable and used to display circuit art while baseboards handle energy storage and power management.

This campaign will focus on the Amulet family. Our Amulets are small disks, 36 mm in diameter and 7.2 mm thick. They are extremely satisfying to hold in your hand and small enough that you can hang them from or attach them to just about anything.

We built Anwaar so that folks who are just getting started with PCB design can produce their own Anwaar-compatible faceplates. Depending on what components you choose to incorporate into your creation, you may need intermediate soldering skills, but we selected SMD headers with a 1.27 mm pitch because they’re reasonably easy to solder by hand. And all of the components we use to construct Anwaar are available "off the shelf" from semiconductor and component distributors.

Features & Specifications

All of the Amulets in this campaign include our A-TINY-15F baseboard and a compatible faceplate. One of the faceplates we’re making available is our A-Proto board, which you can use to prototype your own design.

A-TINY-15F Baseboard

A-Proto Faceplate

Powered by Microchip

The ATtiny1616-MNR is the brains of this board. The newer, 1/2-series ATtinys are capable little 8-bit MCUs and a perfect fit for our application, thanks in part to their small GFN package size. They also consume less power, which is important for Anwaar due to its portable nature. We chose the 1 series (as opposed to the 2 series) because its peripheral touch controller allows for a smaller BOM count and more flexible touch designs. They are easier to program and customize than the ARM SAM lines because they support MCU configuration through the Arduino core. In short, their low power consumption, small footprint, and open-source accessibility make these MCUs essential for our project.

Anwaar in Action

PWM Fade Example

PTC Touch Example

Face-Plate Swap Example

Hybrid Capacitors

Hybrid CapacitorEDLC (supercapacitor)Lithium IonExplanation
VolatilityLow Low High Risk of fire and other hazards
Charge Cycle100,000 cycles 100,000+ cycles 500 - 10,000 cycles A cycle is a full charge and discharge
Estimated Lifespan10 to 15 years 15+ years 3 to 5 years At 100% rated levels
Temperature range-20 to +85 °C -40 to +85 °C -20 to +55 °C Internal temperature
Charge speedFast Very Fast Slow to medium
Self Discharge< 5% per month 0% after 20 days < 5 % per month Energy lost when not in use
Energy Density20 to 200 Wh/kg 3 to 5 Wh/kg 80 to 200 Wh/kg Greater density means longer runtime
Power Density2,000 to to 5,000 W/kg 2,000 to 10,000 W/kg 500 to 1,500 W/kg A greater number mean higher available current

Pinout Diagram

Open Source

Anwaar is OSHWA-certified open hardware, and our baseboards are licensed under CERN-OHL-S V2.0. We relied on free and open-source tools like KiCad, FreeCad, and Krita to build it, and our design files are available on Gitlab. We also provide KiCad templates to help you with your own faceplate designs. Just add them to your third-party templates folder, and create a new project to get started. Thanks to a wonderful third-party Arduino core, Anwaar boards are easy to program. (Here’s some sample code!) Last but not least, we’re working to improve our documentation and tutorials.

In case it’s not obvious, we’re really excited to see what you all make with Anwaar!

Interested in This Project?

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Anwaar (أنوار) is part of Microchip Get Launched

About the Team

Chipperdoodles Chippydootles

Colorado, USA  ·   chippydootles.com

Chipperdoodles Chippydootles was started by Martin Knobel (aka Chipperdoodles) in order to share some neat electronic things (affectionately refereed to as doots) they make to the world

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