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diff --git a/peripheral/libupm/src/cjq4435/cjq4435.h b/peripheral/libupm/src/cjq4435/cjq4435.h
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+/*
+ * Author: Jon Trulson <jtrulson@ics.com>
+ * Copyright (c) 2015 Intel Corporation.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+#pragma once
+
+#include <mraa/pwm.h>
+
+namespace upm {
+  /**
+   * @brief CJQ4435 MOSFET library
+   * @defgroup cjq4435 libupm-cjq4435
+   * @ingroup seeed gpio pwm electric robok
+   */
+
+  /**
+   * @library cjq4435
+   * @sensor cjq4435
+   * @comname Grove MOSFET
+   * @altname CJQ4435
+   * @type electric
+   * @man seeed
+   * @con gpio pwm
+   * @kit robok
+   *
+   * @brief API for the CJQ4435 MOSFET
+   *
+   * UPM module for the CJQ4435 MOSFET. It was developed using the
+   * Grove MOSFET module.  A MOSFET is like a switch, but it can
+   * switch much faster than a mechanical relay.  Here, we implement
+   * support via MRAA pulse width modulation (PWM) functions.
+   * Note: available periods vary depending on
+   * the capabilities of your device.
+   *
+   * @image html cjq4435.jpg
+   * @snippet cjq4435.cxx Interesting
+   */
+  class CJQ4435 {
+  public:
+    /**
+     * CJQ4435 constructor
+     *
+     * @param pin Digital pin to use; this pin must be PWM-capable
+     */
+    CJQ4435(int pin);
+
+    /**
+     * CJQ4435 destructor
+     */
+    ~CJQ4435();
+
+    /**
+     * Sets a period in microseconds
+     *
+     * @param us Period in microseconds
+     */
+    void setPeriodUS(int us);
+
+    /**
+     * Sets a period in milliseconds
+     *
+     * @param ms Period in milliseconds
+     */
+    void setPeriodMS(int ms);
+
+    /**
+     * Sets a period in seconds
+     *
+     * @param seconds Period in seconds
+     */
+    void setPeriodSeconds(float seconds);
+
+    /**
+     * Enables output
+     *
+     * @param enable Enables PWM output if true, disables otherwise
+     */
+    void enable(bool enable);
+
+    /**
+     * Sets a duty cycle. Duty cycle is a floating-point number
+     * between 0.0 (always off) and 1.0 (always on). It represents a
+     * proportion of time, per period, during which the output is
+     * driven high.
+     *
+     * @param dutyCycle Duty cycle to use
+     */
+    void setDutyCycle(float dutyCycle);
+
+    /**
+     * Shortcut to turn the output to continuous on (high)
+     */
+    void on();
+
+    /**
+     * Shortcut to turn the output to continuous off (low)
+     */
+    void off();
+
+  private:
+    bool m_enabled;
+    mraa_pwm_context m_pwm;
+  };
+}
+
+