diff --git a/RaspberryPiZero_node_rpio/index.html b/RaspberryPiZero_node_rpio/index.html
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index 0000000000000000000000000000000000000000..d5777116e715edf9ab12cc543ef97ef98c6c3734
--- /dev/null
+++ b/RaspberryPiZero_node_rpio/index.html
@@ -0,0 +1,36 @@
+<html>
+<head>
+<style>
+pre code {
+ background-color: #eee;
+ border: 1px solid #999;
+ display: block;
+ padding: 20px;
+}
+</style>
+
+
+</head>
+<body>
+
+<h1>RaspberryPi Zero W with BCM2835</h1>
+
+<figure>
+<img src='node_rpio.png'>
+<figcaption>Ring oscillator with node-rpio.</figcaption>
+</figure>
+
+<p>This ring oscillator uses the <a href='https://github.com/jperkin/node-rpio'>node rpio</a> from Jonathan Perkin. The code is available <a href='ring.js'>here</a>, or visible below.</p>
+
+<pre>
+<code>
+var rpio = require('rpio');
+rpio.open(3, rpio.OUTPUT);
+rpio.open(5, rpio.INPUT);
+while(1){rpio.write(3, 1-rpio.read(5) ); }
+</code>
+</pre>
+
+</body>
+
+</html>
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diff --git a/RaspberryPiZero_node_rpio/node_rpio.png b/RaspberryPiZero_node_rpio/node_rpio.png
new file mode 100755
index 0000000000000000000000000000000000000000..2906b51d4ab3bb2f0be5969b29c85305c8203b4e
Binary files /dev/null and b/RaspberryPiZero_node_rpio/node_rpio.png differ
diff --git a/RaspberryPiZero_node_rpio/ring.js b/RaspberryPiZero_node_rpio/ring.js
new file mode 100644
index 0000000000000000000000000000000000000000..801a74f4e4f9165aa305d4eeedfd5dd4f244be98
--- /dev/null
+++ b/RaspberryPiZero_node_rpio/ring.js
@@ -0,0 +1,4 @@
+var rpio = require('rpio');
+rpio.open(3, rpio.OUTPUT);
+rpio.open(5, rpio.INPUT);
+while(1){rpio.write(3, 1-rpio.read(5) ); }
\ No newline at end of file
diff --git a/ring.json b/ring.json
index bea7887edcbe2b7740acf8c3af1fe4e0fa959044..fc29eded5dc9421494380a7b8071bf9bcb321c4b 100644
--- a/ring.json
+++ b/ring.json
@@ -127,9 +127,19 @@
"subdirectory_path":"RaspberryPiZero_bcm2835",
"dev_board_price":5.00,
"dev_board_sales_link":"",
- "ic_price":2.00,
+ "ic_price":0.00,
"ic_sales_link":"",
"ring_period":350
- }
+ },
+ {
+ "name":"RPiZero, node rpio",
+ "serial_number":"",
+ "subdirectory_path":"RaspberryPiZero_node_rpio",
+ "dev_board_price":5.00,
+ "dev_board_sales_link":"",
+ "ic_price":0.00,
+ "ic_sales_link":"",
+ "ring_period":7648
+ }
]
}
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