From 0ba0148cd553fc226b677eeb0a4bcd99fb97a810 Mon Sep 17 00:00:00 2001
From: Grace Copplestone <grace.copplestone@cba.mit.edu>
Date: Mon, 14 Aug 2017 17:51:23 -0400
Subject: [PATCH] Update README.md

---
 README.md | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/README.md b/README.md
index 997e7cc..76156ae 100644
--- a/README.md
+++ b/README.md
@@ -12,3 +12,13 @@ This device produces around 0.1 volts/amp out of the sensor (or ~1 mV per Watt t
 Below, we see the flux guides registered into pockets on the pcb. 
 
 <img src='img/bc832-watt-0.jpg' width=40%>
+
+### Power requirements
+
+The nRF52832 draws 5mA peak @ 3.3V
+
+The Hall Effect Sensor draws xmA @ 3.3V
+
+Assume whole device runs at peak load for 10% of the time
+
+$$P=IV=5e-3*3.3*0.1=1.65mW$$
\ No newline at end of file
-- 
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