diff --git a/hardware/arduino/Weather_Shield_Basic/README.md b/hardware/arduino/Weather_Shield_Basic/README.md
index 2f64bd9..f26c70b 100644
--- a/hardware/arduino/Weather_Shield_Basic/README.md
+++ b/hardware/arduino/Weather_Shield_Basic/README.md
@@ -3,3 +3,10 @@
 Used as a basic sensor test case using the serial sensor type.
 
 I have a very old Weather Shield and it worked well enough to verify the concept of sensor data. This is here for my own reference and show casing some ideas. YMMV greatly if using this code.
+
+## Hardware / Bill Of Materials
+
+| Quantity | Hardware                                |
+| -------- | --------------------------------------- |
+| 1        | Arduino Micro                           |
+| 1        | SparkFun Weather Shield                 |
diff --git a/hardware/arduino/attiny_isp/README.md b/hardware/arduino/attiny_isp/README.md
index 3a0303a..74a932e 100644
--- a/hardware/arduino/attiny_isp/README.md
+++ b/hardware/arduino/attiny_isp/README.md
@@ -1,3 +1,16 @@
 # isp
 
 The ISP programmer code, schematics and more used for programming the ATTiny chips used elsewhere.
+
+## Hardware / Bill Of Materials
+
+| Quantity | Hardware                                |
+| -------- | --------------------------------------- |
+| 1        | Arduino Uno                             |
+| 1        | Arduino Proto Shield                    |
+| 1        | ZIF Socket                              |
+| 1        | 0.1 uF ceramic capacitor                |
+| 1        | Common Anode RGB LED                    |
+| 3        | npn Transistor                          |
+| 3        | 10k Resistor                            |
+| 3        | 4.7k Resistor                           |
diff --git a/hardware/arduino/calibration_jig/MAX6816-MAX6818.pdf b/hardware/arduino/calibration_jig/MAX6816-MAX6818.pdf
deleted file mode 100644
index 124773d..0000000
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diff --git a/hardware/arduino/calibration_jig/README.md b/hardware/arduino/calibration_jig/README.md
index 8a7a825..a61b47a 100644
--- a/hardware/arduino/calibration_jig/README.md
+++ b/hardware/arduino/calibration_jig/README.md
@@ -1,3 +1,16 @@
 # calibration_jig
 
 An Arduino based build that allows testing and reading various sensors (used elsewhere) values for calibration prior to setup with the main dashboards and deployment.
+
+## Hardware / Bill Of Materials
+
+| Quantity | Hardware                                |
+| -------- | --------------------------------------- |
+| 1        | Adafruit Metro Express M0               |
+| 1        | SparkFun QWIIC Proto Shield             |
+| 1        | Arduino Proto Shield                    |
+| 3        | Push button                             |
+| 1        | MAX6816EUS+T (Button Debounce)         |
+| 1        | MAX6817EUT+T (Button Debounce)          |
+| 1        | Adafruit 2.2" TFT LCD                   |
+| 2        | 4.7k Resistor                           |
diff --git a/hardware/arduino/calibration_jig/schematic/Schematic_Home-Assistant_Calibration-Jig_20190611135853.pdf b/hardware/arduino/calibration_jig/schematic/Schematic_Home-Assistant_Calibration-Jig_20190611135853.pdf
new file mode 100644
index 0000000..dd1cc0c
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diff --git a/hardware/arduino/calibration_jig/schematic/Schematic_Home-Assistant_Calibration-Jig_20190611135910.png b/hardware/arduino/calibration_jig/schematic/Schematic_Home-Assistant_Calibration-Jig_20190611135910.png
new file mode 100644
index 0000000..1c33b78
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diff --git a/hardware/arduino/i2c_dip/README.md b/hardware/arduino/i2c_dip/README.md
index bde003d..762f332 100644
--- a/hardware/arduino/i2c_dip/README.md
+++ b/hardware/arduino/i2c_dip/README.md
@@ -5,3 +5,11 @@ A *simple* i2c based dip switch that can be queried as a sensor.
 This build uses an ATTiny 2313 / 4313 for the i2c slave with an 8 pin dip switch. The status of all 8 pins on the dip switch are returned via i2c as a single byte that can be used to determine state of all 8.
 
 The main ATTiny code that reads the dip switch states and sends back a single byte with each dip's state encoded as a ```0``` for ```off``` and ```1``` for on.
+
+## Hardware / Bill Of Materials
+
+| Quantity | Hardware                                |
+| -------- | --------------------------------------- |
+| 1        | ATTiny 4313                             |
+| 2        | 8 pin DIP switch                        |
+| 1        | 0.1uF Capacitor                         |
diff --git a/hardware/arduino/water_level/README.md b/hardware/arduino/water_level/README.md
index cd1bf65..b4563d4 100644
--- a/hardware/arduino/water_level/README.md
+++ b/hardware/arduino/water_level/README.md
@@ -1,3 +1,11 @@
 # Water Level Sensor
 
 A water level meter adapted to i2c using an ATTiny85
+
+## Hardware / Bill Of Materials
+
+| Quantity | Hardware                                                 |
+| -------- | -------------------------------------------------------- |
+| 1        | ATTiny 85                                                |
+| 1        | Milone Standard eTape Assembly (Voltage Divider Version) |
+| 1        | 0.1uF Capacitor                                          |