diff --git a/modules/EPS/calc.ipynb b/modules/EPS/calc.ipynb
new file mode 100644
index 0000000..fef2a50
--- /dev/null
+++ b/modules/EPS/calc.ipynb
@@ -0,0 +1,114 @@
+{
+ "metadata": {
+  "language_info": {
+   "codemirror_mode": {
+    "name": "ipython",
+    "version": 3
+   },
+   "file_extension": ".py",
+   "mimetype": "text/x-python",
+   "name": "python",
+   "nbconvert_exporter": "python",
+   "pygments_lexer": "ipython3",
+   "version": "3.8.10"
+  },
+  "orig_nbformat": 4,
+  "kernelspec": {
+   "name": "python3",
+   "display_name": "Python 3.8.10 64-bit"
+  },
+  "interpreter": {
+   "hash": "31f2aee4e71d21fbe5cf8b01ff0e069b9275f58929596ceb00d14d90e3e16cd6"
+  }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 2,
+ "cells": [
+  {
+   "cell_type": "code",
+   "execution_count": 2,
+   "metadata": {},
+   "outputs": [
+    {
+     "output_type": "stream",
+     "name": "stdout",
+     "text": [
+      "--------------------------------------------\nIdeal resistor: 0.0132R\nPower loss: 0.33W\n"
+     ]
+    },
+    {
+     "output_type": "error",
+     "ename": "IndexError",
+     "evalue": "Replacement index 0 out of range for positional args tuple",
+     "traceback": [
+      "\u001b[0;31m---------------------------------------------------------------------------\u001b[0m",
+      "\u001b[0;31mIndexError\u001b[0m                                Traceback (most recent call last)",
+      "\u001b[0;32m/tmp/ipykernel_112179/3645271640.py\u001b[0m in \u001b[0;36m<module>\u001b[0;34m\u001b[0m\n\u001b[1;32m     14\u001b[0m     \u001b[0mprint\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34m\"Ideal resistor: {}R\"\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mformat\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0mideal_resistor\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m     15\u001b[0m     \u001b[0mprint\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34m\"Power loss: {}W\"\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mformat\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0mpower_loss\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m---> 16\u001b[0;31m     \u001b[0mprint\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34m\"Resolution: {}A\"\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mformat\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m\u001b[1;32m     17\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n",
+      "\u001b[0;31mIndexError\u001b[0m: Replacement index 0 out of range for positional args tuple"
+     ]
+    }
+   ],
+   "source": [
+    "max_sense_voltage = 3.3\n",
+    "max_output_current = 5.0\n",
+    "adc_resolution = 4096\n",
+    "\n",
+    "max_acceptable_power_loss = 0.1\n",
+    "\n",
+    "amp_ratios = [50,100,200]\n",
+    "\n",
+    "for ratio in amp_ratios:\n",
+    "\n",
+    "    ideal_resistor = max_sense_voltage/ratio / max_output_current\n",
+    "    power_loss = ideal_resistor * max_output_current**2\n",
+    "    resolution = \n",
+    "    print(\"--------------------------------------------\")\n",
+    "    print(\"Ideal resistor: {}R\".format(ideal_resistor))\n",
+    "    print(\"Power loss: {}W\".format(power_loss))\n",
+    "    print(\"Resolution: {}A\".format())\n",
+    "\n"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 14,
+   "metadata": {},
+   "outputs": [
+    {
+     "output_type": "stream",
+     "name": "stdout",
+     "text": [
+      "Length: 1.1136363636363635\nWraps:  16.880069721867685\n"
+     ]
+    }
+   ],
+   "source": [
+    "import math\n",
+    "\n",
+    "bat_diameter = 21\n",
+    "wrap_length = bat_diameter * math.pi / 1000\n",
+    "heating_power = 2\n",
+    "voltage = 3.5\n",
+    "wire_resistance = 5.5 # per meter\n",
+    "\n",
+    "current = heating_power / voltage\n",
+    "resistance = voltage / current\n",
+    "length = resistance / wire_resistance\n",
+    "wraps = length / wrap_length\n",
+    "\n",
+    "print(\"Length: {}\".format(length))\n",
+    "print(\"Wraps:  {}\".format(wraps))\n",
+    "\n",
+    "\n",
+    "\n"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": []
+  }
+ ]
+}
\ No newline at end of file