Saris Hammer Smart Bike Trainer

Lead Engineer on Two Successful Bike Trainer Products

During the development of the Hammer and Magnus indoor bike trainer I was the lead engineer on the projects.

I created and tested the electrical architecture that included a wireless a Bluetooth Low Energy radio, a high power DC power supply, and high precision measurement system.

I also managed the development of the firmware on the ST Microcontroller. The firmware needed to take 100 measurements per second and adjust the DC power supply with each measurement.

During the ramp into production I designed, built, and tested 3 high power calibration systems. Each was capable of delivering 1200 watts of power to the trainer and measuring the applied torque to within +/-1%.

As part of the development process I participated in the international effort to create a new Bluetooth specification detailing how to control these new bike trainers using BLE. The specification can be found here.