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Projects – Hobbybotics Reflow Controller Quad V1.0

March 12, 2013

Here’s a quick update to the new reflow controller project I introduced earlier.  I have fully populated one of the prototype boards and began to write test sketches to ensure it functions properly.  The project is moving a little slower right now as I am in the process of closing on a new house and… Read More ›

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Projects – Hobbybotics Reflow Controller Quad V1.0

I’ve been working on a redesign of the original reflow controller.  Here are the features for the new board: Four MAX31855 Type-K Thermocouple interfaces DS3234 Real Time Clock with battery backup FT231x USB XBee or Bluetooth Wireless MCP23008 I/O Expanders for 2-wire expanded communication ULN2803 Darlington buffered output relay/SSR control Internal or external micro SD… Read More ›

Hobbybotics Serial LCD Controller

Projects – Hobbybotics Serial LCD Controller V3.0

Some of the projects I design make use of character displays. The Liquid Crystal Displays (LCD) I typically use are based on the Hitachi HD44780 LCD command set. Most HD44780 compatible LCDs use a standard 16 contact interface and are known as parallel devices. This project presents a design that allows the LCD to be… Read More ›


Projects – Crazy for 3D Printing – First 3D Design

In the first installment of my adventures with 3D printers I talked briefly about Cubify Invent from the makers of the Cube 3D printer. For just $49 you can pick up Cubify Invent which has many features that are contained in more expensive 3D packages such as Solid Works.  The work flow is similar to 123D by… Read More ›

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Projects – Crazy for 3D Printing – An Introduction

Back in June 2012 I posted about purchasing a Makerbot Replicator 3D printer with dual extruders. Since then, I have been working with it so much that I have neglected many of my other project(s). As such, I intend to document my journey into the world of 3D fabrication. According to the RepRap wiki: “RepRap is humanity’s first general-purpose self-replicating manufacturing machine…. Read More ›


Project – Internet Enabled Multi-zone Thermostat (DesignSpark Challenge Entry)

I’m currently working on documenting this project but, here is a link to my entry for the DesignSpark Challenge. The competition has already been decided and my entry garnered an honorable mention award! This was the first competition that I entered and to win an honorable mention out of over 1000 entrants means a lot… Read More ›

Projects – Hobbybotics Reflow Controller V8.03

A while ago I decided to start designing my circuits using Surface Mount Devices (SMD).  There are many advantages to using SMD components over through-hole components.  Some of the major advantages are size and cost.  The smaller size means I can make the circuit boards smaller.  In addition, smaller components and smaller circuit boards means… Read More ›

Projects – Hobbybotics SHT1x Humidity/Temperature Breakout V1.0

I designed a breakout board for the Sensirion SHT1x Humidity and Temperature Sensors.  The SHT1x family of sensors can measure relative humidity, temperature Celsius and temperature Fahrenheit.  My plans are to use the design for various heating and control projects such as a wireless thermostat, greenhouse controller and some environmental projects.  The project link details a… Read More ›

Projects – Hobbybotics Analog Devices AD595 Thermocouple Breakout V1.0

I designed a breakout board for the Analog Devices AD595 Cold-Junction Compensated Type-K Thermocouple interface.  This breakout board is an alternative to the MAX6675 version I detailed here.  Check it out here.

Projects – Hobbybotics MAX6675 Thermocouple Breakout V1.0

I designed a breakout board for the MAX6675 Cold-Junction Compensated Type-K Thermocouple interface.  My plans are to use the design for various heating control projects such as a Sous-vide cooker, wireless thermostat, smoker controller, beer brew controller, reflow oven and some environmental projects.  Check it out here.

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