Hardware

Bitcoin Wallet

No crashing external hard drives losing you a fortune. No security risks of writing down your codes on paper, or trying to store them on your computer where they could be exposed, compromised, or hacked.
Hardware Bitcoin Wallet Electronic Device
Bitcoin wallet device with detailed inscriptions

Case Study:

Turning a Prototype into a Ready-to-Sell Product

Over the course of the last year, the cryptocurrency market has seen a remarkable surge, capturing the attention of investors worldwide and generating a lot of excitement. The potential for substantial returns and the rapid growth of various cryptocurrencies have attracted many individuals to join in and invest in this dynamic market.

However, amidst all the enthusiasm, it's crucial to recognize that securing your crypto holdings is of utmost importance. The decentralized and digital nature of cryptocurrencies can make them vulnerable to various security threats. One major concern is the risk associated with storing your crypto codes, also known as private keys or passwords.

If someone manages to gain unauthorized access to your crypto codes, they effectively gain control over your digital assets. This means they could easily transfer your funds to their own wallets, leaving you with potential financial losses. Instances of hacking, phishing, or other cyberattacks have unfortunately resulted in many people losing their hard-earned crypto assets.

In light of these risks, it's essential to adopt robust security measures to protect your crypto holdings. This includes safeguarding your private keys and ensuring they are kept in a highly secure environment. Common safety practices involve using hardware wallets, which are dedicated devices designed to store crypto keys offline securely, reducing the risk of online vulnerabilities.
The crypto market surged in the last year, attracting global attention and excitement. But securing your crypto is crucial due to potential risks. Cyberattacks, hacking, and unauthorized access to your crypto codes could lead to financial losses.

In light of these risks, it's essential to adopt robust security measures to protect your crypto holdings. This includes safeguarding your private keys and ensuring they are kept in a highly secure environment.

Common safety practices involve using hardware wallets, which are dedicated devices designed to securely store crypto keys offline, reducing the risk of online vulnerabilities.

Challenge:

Our client came to us with the device prototype in hand. They asked us to improve the housing.
The units assembled inside these housings are intended for their extremely high-end enterprise clients and the most valuable contributors from an open-source community which they support. That’s why it was vital to achieve a premium look and feel of the product while optimizing it for the limited production run.
We also needed to create an expansion circuit board and various software modules to help our client turn their prototype into a commercial-grade product which they could then go on to offer to a wider market share.
Bitcoin wallet prototype is being tested on a computer

Solutions:

We developed and produced an expansion board (“shield”) fitting with the mainboard inside the enclosure. This was a custom job specifically for the housing requested by this client. It needed to provide power from a rechargeable battery and have a smart card slot with necessary interfacing circuitry.
Staying aligned with the customer's prototype, which was initially created on a much more basic thermoplastic 3D printer, we engineered a new housing optimized for CNC machining, out of aluminum alloy.
The unique solutions we have applied to this project:
  • Expansion circuit board.
    Fitting the expansion board and mainboard perfectly inside the enclosure allowed for the optimal use of space, while still allowing connectivity to a rechargeable battery. We still made space for a smart card slot, so their customers could use their own cards to store the keys and sign transactions.
  • Improved appearance and ergonomics.
    We made several enhancements on the visual appearance of the enclosure, such as eliminating the external screws and replacing them with slider latches. Laser microperforations were created instead of slit holes to hide the indicator LEDs when they were turned off.
  • Fine finishing.
    We applied fine surface treatment to the enclosure for a superior look and touch, including bead blasting for a satin feel and hard anodizing for a wear-resistant deep color.

Solutions:

We developed and produced an expansion board ("shield") fitting with the mainboard inside the enclosure. This was a custom job specifically for the housing requested by this client. It needed to provide power from a rechargeable battery and have a smart card slot with necessary interfacing circuitry.
Staying aligned with the customer's prototype, which was initially created on a much more basic thermoplastic 3D printer, we engineered a new housing optimized for CNC machining, out of aluminum alloy.
The unique solutions we have applied to this project:
Expansion circuit board
Fitting the expansion board and mainboard perfectly inside the enclosure allowed for the optimal use of space, while still allowing connectivity to a rechargeable battery. We still made space for a smart card slot so their customers could use their own cards to store the keys and sign transactions.
Improved appearance and ergonomics
We made several enhancements on the visual appearance of the enclosure, such as eliminating the external screws and replacing them with slider latches. Laser microperforations were created instead of slit holes to hide the indicator LEDs when they were turned off.
Fine finishing
We applied fine surface treatment to the enclosure for a superior look and touch, including bead blasting for a satin feel and hard anodizing for a wear-resistant deep color.
Hardware Bitcoin Wallet Electronic Device Disassembled
The client wanted a high-end product and was extremely satisfied with the results. Because we were doing such a small manufacturing run of the enhanced version of their prototype, they also valued that we were able to cut costs and still make a very expensive-looking and professional device that was easy to use and gorgeous to look at.

Specifications:

Projects deliverables:

Schematics and PCB documents
- PCB manufacturing files
- 3D models
- Mechanical drawings
- Source code in C, C++ and Python
- Engineering samples
- Mass production batches
HARDWARE  PLATFORM:
STM32F469
SOFTWARE PLATFORM:
MicroPython, LVGL
DISPLAY:
4”, 480 x 800, touchscreen
INTERFACES:
Smart card, USB, ST-LINK
SIZE, WEIGHT:
133 x 70 x 23 mm, 210 gr
See the device on Specter Solutions

Outcome:

We produced a limited production run, featuring various colors. The feedback from our client’s customers was very positive, and and it was well-liked by everyone involved.
Our companies are now jointly working together on a new generation of the product, which is smaller, optimized for mass production, and will have a better supply chain reliability.
The expansion board has found its own niche in the client’s customer base and is currently being mass-produced and supplied worldwide.
Bitcoin wallet device in work

Next Projects

High-performance hardware for a digital world.
Every one of these digital electronic devices that we created had three things in common.

1. They started with a great idea for a digital electronic device.
2. The idea had a unique set of challenges to be overcome.
3. We totally nailed the job and created something unique, from start to finish.

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