Category Archives: Electronics

Trigger Trap – Universal Arduino Camera Trigger

Posted on October 31, 2011 by krazatchu

UPDATE DEC 6th: Now in Production! See TriggerTrap.com for details…  The Trigger Trap is an Arduino compatible universal camera trigger. Supporting out of the box laser, sound and time lapse triggering, the Trigger Trap brings the ease and simplicity of … Continue reading →

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Solder Hotplate

Posted on November 22, 2010 by krazatchu

To perform low temperature soldering of laser diodes a hotplate is being designed and built. It consists of two parts, the heater and the controller. The heat source is four 5 ohm 25 watt resisters attached to a half inch … Continue reading →

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LED Flashlight with 1w Constant Current Drive

Posted on August 30, 2010 by krazatchu

A constant current LED driver was implemented to power a 1 Watt Cree P4 XR-E providing roughly 85 Lumens @ 350 mA. The constant current SMPS was based on the LTC3490 allowing operation from an input as low as 1 … Continue reading →

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9 Watt LED Desk Lamp

Posted on August 25, 2010 by krazatchu

A desk Lamp was realized with a 9w LED module, a salvaged Pentium slot heatsink and an AtMega 8. Two switch mode supplies were used, one to provide 5v for the AVR and the other in constant current mode to … Continue reading →

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WindPOV Weather Station

Posted on August 19, 2010 by krazatchu

A wind turbine powered weather station displaying temperature, humidity and wind speed by persistence of vision using 8 white LEDs along a wing tip. The turbine blades were cut from a length of 4 inch PVC pipe. A 12v stepper … Continue reading →

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Capacitive Water Sensor

Posted on May 20, 2010 by krazatchu

A capacitive sensor was developed as a feedback method to measure the moisture content of a system. It was based on an AtTiny2313 running on the internal RC oscillator  @ 8 mHz. The analog comparator of the AVR was set … Continue reading →

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DC Servo Drive

Posted on May 31, 2009 by krazatchu

Update: Do to heavy traffic and popular demand NoM1 Design has decided to create an easy to assemble DC Servo kit. Complete information can be found at http://n0m1.com/2011/11/19/nomi-locus-dc-servo-kit/    This is a DC Servo drive built in the summer of … Continue reading →

Posted in CNC, Electronics | 3 Comments

Arduino Proto Board

Posted on April 18, 2009 by krazatchu

An Arduino compatible proto board was realized as part of a larger project. Provisions were made to include additional features for future use. The board is based on the Atmega128 and includes an AT86RF230 for 802.15.4 RF communication, a DS1307 … Continue reading →

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Data Logging Weigh Scale

Posted on December 31, 2008 by krazatchu

Implemented here is a data logging digital weigh scale. The original scale was gutted, leaving the four strain gauges, one per leg.  The main controller is an AtMega32. An AD623 is used for differential amplification of the strain gauge signal. … Continue reading →

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IR LED Matrix with DMX-512 Control

Posted on November 4, 2008 by krazatchu

A complete computer controlled lighting system implemented as an art installation was realized using the DMX-512 protocol. OpenDMX was used for sending packets along a multi-drop RS-485 bus. AtTiny2313?s were converting DMX into 8 PWM channels per vertical drop. The … Continue reading →

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