From ce9442fa6d010984af997065babd988d99db9c11 Mon Sep 17 00:00:00 2001 From: Sam Calisch <sam.calisch@cba.mit.edu> Date: Tue, 26 Sep 2017 09:33:48 -0400 Subject: [PATCH] Update README.md --- README.md | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/README.md b/README.md index 7c79378..7e7d315 100644 --- a/README.md +++ b/README.md @@ -62,12 +62,15 @@ Fusion 360 lets us quickly test loading cases for flexure designs. Below are si <img src='v1/img/flexure-twist.mp4' width=300px> -Building on the experiments with the AS5510, we explore the use of the AS5013 to perform 3-dimensional tracking of a magnet. This IC is nominally an 8-bit 2 axis magnetic encoder, though it contains 5 hall effect sensors, each with 12-bit resolution, adjustable gains, and I2C-accessible raw values. <a href='as5013-test'>as5013-test/</a> contains pcb source files for a board to evaluate this measurement. +Building on the experiments with the AS5510, we explore the use of the AS5013 ($4.42 in Q100) to perform 3-dimensional tracking of a magnet. This IC is nominally an 8-bit 2 axis magnetic encoder, though it contains 5 hall effect sensors, each with 12-bit resolution, adjustable gains, and I2C-accessible raw values. <a href='as5013-test'>as5013-test/</a> contains pcb source files for a board to evaluate this measurement. -<img src='as5013-test/testing2.jpg' width=350px> -<img src='as5013-test/nrf52-as5013-board.jpg' width=400px> +<img src='as5013-test/block-diagram.png' width=350px> +<img src='as5013-test/shape-functions.jpg' width=400px> To characterize the use of the AS5013 as a three-dimensional tracking device, we use a 5 axis stage (2 axes motorized, 3 manual) built around two Thorlabs PT1M micrometer stages. After setting a magnet height and orientation, we can sample the 5 hall elements over a two dimensional array of magnet displacements. Executing this for a handful of magnet heights should let us fit functions for X, Y, and Z in terms of the 5 hall readings. +<img src='as5013-test/testing2.jpg' width=350px> +<img src='as5013-test/nrf52-as5013-board.jpg' width=400px> + -- GitLab