Added IPYNB and schematic of summing section

README.md

@@ -38,6 +38,10 @@ Mixes two inputs onto two outputs using 4 Potentiometers.
 | ---- | ----- | --- |
 | <img src="gerbers/MAMI-QUAD_Combined_Top.png" width="200px"> | <img src="gerbers/MAMI-QUAD_Combined_Bottom.png" width="200px"> | <img src="images/3d-quad.png" width="200px"> |
 
+The summing section looks like this and allows a jumper ()`J_ATT1` and `J_ATT2`) or a switch (2.54mm lead spacing) to be used to switch between unipolar and bipolar attenuation for each row seperately.  
+![](images/schematic_summing.png)
+
+
 ## Output Module [MAMI-OUTPUT]
 
 Provides two 3.5mm Mono output jacks, with a Jumper (or switch) each row of tiles can be switched between unipolar and bipolar attenuation.
@@ -46,3 +50,6 @@ Provides two 3.5mm Mono output jacks, with a Jumper (or switch) each row of tile
 | ---- | ------ | --- |
 | <img src="gerbers/MAMI-OUTPUT_Combined_Top.png" height="200px"> | <img src="gerbers/MAMI-OUTPUT_Combined_Bottom.png" height="200px"> | <img src="images/3d-output.png" height="200px"> |
 
+# Panels
+
+Constructing a panel is straightforward: drill holes for all potentiometers, switches and jacks. There is an example panel for a 8x8 Matrix in the `panels` directory
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calculate-parts.ipynb

+{
+  "cells": [
+    {
+      "cell_type": "code",
+      "source": [
+        "# Change these values to calculate the needed values\n",
+        "requirements = {\"inputs\": 8, \"outputs\":8}\n",
+        "\n",
+        "\n",
+        "# Do not edit below this Point unless you know what you are doing\n",
+        "data = {\n",
+        "    \"mami-input\": {\n",
+        "        \"input-channels\": 2,\n",
+        "        \"parts\": [\n",
+        "            {\"MPN\": \"PJ301M-12\", \"n\": 2},\n",
+        "            {\"MPN\": \"Subminiature On-Off-(On) Toggle switch\", \"n\": 2},\n",
+        "        ]\n",
+        "    },\n",
+        "    \"mami-output\": {\n",
+        "        \"output-channels\": 2,\n",
+        "        \"parts\": [\n",
+        "            {\"MPN\": \"LME49720\", \"n\": 2},\n",
+        "            {\"MPN\": \"100nF 0605 25V\", \"n\": 4},\n",
+        "            {\"MPN\": \"100k 0805\", \"n\": 8},\n",
+        "            {\"MPN\": \"PJ301M-12\", \"n\": 2}\n",
+        "        ]\n",
+        "    },\n",
+        "    \"mami-quad\": {\n",
+        "        \"input-channels\":2, \"output-channels\":2,\n",
+        "        \"parts\": [\n",
+        "            {\"MPN\": \"P0915N-FC15BR100K\", \"n\": 4},\n",
+        "            {\"MPN\": \"Knob\", \"n\": 4},\n",
+        "            {\"MPN\": \"100k 0805\", \"n\": 4}\n",
+        "        ]\n",
+        "    }\n",
+        "}\n",
+        "\n",
+        "# Calculate how many PCBs are needed\n",
+        "n_input_modules = int(requirements[\"inputs\"] / data[\"mami-input\"][\"input-channels\"])\n",
+        "n_output_modules = int(requirements[\"outputs\"] / data[\"mami-output\"][\"output-channels\"])\n",
+        "n_quad_modules = int((requirements[\"inputs\"] * requirements[\"outputs\"]) / (data[\"mami-output\"][\"output-channels\"] * data[\"mami-input\"][\"input-channels\"]))\n",
+        "\n",
+        "\n",
+        "\n",
+        "Print the PCB\n",
+        "print(\"Needed for a {}x{} Matrix Mixer\".format(requirements[\"inputs\"], requirements[\"outputs\"]))\n",
+        "print(\"{}\".format(\"=\"*50))\n",
+        "print(\"{0:>5}x MAMI-INPUT-Module\".format(n_input_modules))\n",
+        "print(\"{0:>5}x MAMI-OUTPUT-Module\".format(n_output_modules))\n",
+        "print(\"{0:>5}x MAMI-QUAD-Module\\n\".format(n_quad_modules))\n",
+        "\n",
+        "# Collect all the parts\n",
+        "bom = {}\n",
+        "\n",
+        "for part in data[\"mami-input\"][\"parts\"]*n_input_modules + data[\"mami-quad\"][\"parts\"]*n_quad_modules + data[\"mami-output\"][\"parts\"]*n_output_modules:\n",
+        "    if part[\"MPN\"] in bom:\n",
+        "        bom[part[\"MPN\"]] += part[\"n\"]\n",
+        "    else:\n",
+        "        bom[part[\"MPN\"]] = part[\"n\"]\n",
+        "\n",
+        "# Print the BOM\n",
+        "print(\"Parts\\n{}\".format(\"=\"*50))\n",
+        "for key, value in bom.items():\n",
+        "    print(\"{:>5}x {}\".format(value, key))"
+      ],
+      "outputs": [
+        {
+          "output_type": "stream",
+          "name": "stdout",
+          "text": [
+            "Needed for a 8x8 Matrix Mixer:\n",
+            "==================================================\n",
+            "    4x MAMI-INPUT-Module\n",
+            "    4x MAMI-OUTPUT-Module\n",
+            "   16x MAMI-QUAD-Module\n",
+            "\n",
+            "Parts\n",
+            "==================================================\n",
+            "   16x PJ301M-12\n",
+            "    8x Subminiature On-Off-(On) Toggle switch\n",
+            "   64x P0915N-FC15BR100K\n",
+            "   64x Knob\n",
+            "   96x 100k 0805\n",
+            "    8x LME49720\n",
+            "   16x 100nF 0605 25V\n"
+          ]
+        }
+      ],
+      "execution_count": 29,
+      "metadata": {
+        "collapsed": false,
+        "outputHidden": false,
+        "inputHidden": false
+      }
+    },
+    {
+      "cell_type": "code",
+      "source": [],
+      "outputs": [],
+      "execution_count": null,
+      "metadata": {
+        "collapsed": false,
+        "outputHidden": false,
+        "inputHidden": false
+      }
+    }
+  ],
+  "metadata": {
+    "kernel_info": {
+      "name": "python3"
+    },
+    "language_info": {
+      "name": "python",
+      "version": "3.7.3",
+      "mimetype": "text/x-python",
+      "codemirror_mode": {
+        "name": "ipython",
+        "version": 3
+      },
+      "pygments_lexer": "ipython3",
+      "nbconvert_exporter": "python",
+      "file_extension": ".py"
+    },
+    "kernelspec": {
+      "name": "python3",
+      "language": "python",
+      "display_name": "Python 3"
+    },
+    "nteract": {
+      "version": "0.15.0"
+    }
+  },
+  "nbformat": 4,
+  "nbformat_minor": 0
+}
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