From 519655b1a635f234b024aad55425b31d31714f01 Mon Sep 17 00:00:00 2001
From: Sam Calisch <sam.calisch@cba.mit.edu>
Date: Thu, 11 Jan 2018 16:08:40 -0500
Subject: [PATCH] Update index.html
---
nrf52-stepper/index.html | 1 +
1 file changed, 1 insertion(+)
diff --git a/nrf52-stepper/index.html b/nrf52-stepper/index.html
index 31ed362..9b1d796 100644
--- a/nrf52-stepper/index.html
+++ b/nrf52-stepper/index.html
@@ -15,6 +15,7 @@ pre code {
<a href='nrf52-stepper-layout.png'><img src='nrf52-stepper-layout.png' height=300px></a>
<a href='nrf52-stepper-traces.png'><img src='nrf52-stepper-traces.png' height=300px></a>
<a href='nrf52-stepper-interior.png'><img src='nrf52-stepper-interior.png' height=300px></a>
+<a href='nrf52-stepper-mounted.jpg'><img src='nrf52-stepper-mounted.jpg' height=300px></a>
<p>This is a stepper motor controller built around the DRV8825 and the nRF52. The nRF52 receives commands over the radio and controls the motor, which means we only need to deliver power to the motor, no data lines.</p>
<p>This board uses a PWM output and a low pass filter to deliver a voltage level to control the current limiting value for the DRV8825. A 10K resistor and a 1uF capacitor do a reasonably good job smoothing the 10kHz PWM into a constant voltage level.</p>
--
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