This is a computer generated image of a PCB that I developed for the SnowPak project (not seen in this image: display connector, LED display, tactile buttons). One of the challenges with this design was meeting the requirment for board size, while also meeting the requirment for button separation and fitting the display in the same footprint.
Another challenge was that during manual assembly was pin shorting on the 9-dof sensos, which was a 24-pin QFN package. All of these challenges were overcome and Fraser Instruments received 10 boards on-time for Winter testing.
First Proof-of-Concept Prototype
This prototype was created in 2-3 weeks. It measured force acting on a button sensor and transmitted the information via bluetooth to a smartphone.
Moving away from using smartphones, this prototype measured force acting on a load-cell and displayed the information on an LED display.
New Zealand Winter Prototype
This prototype was shipped to the other side of the world, just in-time for winter in New Zealand. The data gathered using this prototype was important for setting device requriements for the next prototype interation that would be used in Canada's winter.
Canadian Winter Prototype
Based on feedback from the New Zealand Winter Prototype this prototype was designed to be more compact and have finer measurement resolution.
The main feedback on the Canadian Winter Prototype was that the display was too difficult to read, both because of text size and lighting issues. The new display is much larger and is readable even in direct sunlight.
- PCB Design
- PCB Fabrication
- PCB Assembly
- Firmware Development
- 3D Modelling
- 3D Printing