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.
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.
I updated the CNZ1120 Photo Interrupter board to version 2.0. Check out the gallery here.
I updated the CNZ1120 Photo Interrupter board to version 2.0. The new board is smaller and uses SMD components (only two resistors). Check it out here.
I designed a basic motor controller that is robust, cost effective and able to handle high current. I wanted to take advantage of Pulse Width Modulation (PWM) to allow speed control but keep direction control as simple as possible. Thus, I use a pair of SPDT relays for direction and a single MOSFET for PWM. I also use optoisolation to separate digital logic from the back EMF of the motor and relay coils. Go here to see it.
I developed the prototype plug to further extend the mounting options for the Hobbyduino. A breadboard can be mounted for prototyping or components can be soldered onto the board. Go here to see it.
I wanted to expand the mounting options for the Hobbyduino Mini so, I created a screw terminal shield. This shield breaks out the Arduino pins to screw terminals and allows for easy attachment of wires. Go here for the project.