HLK-RM04 Testbed

December 8, 2014
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HLK-RM04 Testbed

  Like many developers I purchased an HLK-RM04 WiFi route module with the intent of Flashing my own Linux image onto it. So I wired it up and tried to build an OpenWRT image using a virtual machine running Ubuntu. What I ended up with is a bricked module and I had no tools to…

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Rolly Bot Preview

November 10, 2014
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Rolly Bot Preview

My first 3D printed Rolly Bot design is a work in progress. The printed plastic parts work well enough that I want to move on to designing a user friendly PCB as part of the design. As you can see in the photo of the yellow Rolly Bot the current UNO and wiring are a…

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WS2812B Introduction

November 4, 2014
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WS2812B Introduction

The WS2812B is a bit addressable RGB LED. The WS2812B (don’t confuse this with a WS2812 which has six pins) is a four pin device that is very simple to wire up to an Arduino. The LEDs can be daisy chained and are available as LED strips or discrete parts. Notice that no resistors are…

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Carduino/Swarmbot

September 26, 2014
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Carduino/Swarmbot

I’m not sure whether this design should be called Carduino or Swarmbot. The design of this car is based on the Arduino UNO where the pin map matches that of an UNO. The design includes a dual H-bridge so that the motors are individually reversible. I have also included an IR remote control to send…

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Mini Maker Faire Ottawa

August 15, 2014
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Mini Maker Faire Ottawa

After posting about the Paper Car 2014 circuit its about time to reveal the final project. In preparation for the Ottawa mini maker faire I have designed yet another paper car. Hopefully the project will run a little smoother than last year. The new design is much simpler to assemble with less soldering and a…

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Using Paper Car 2014

August 4, 2014
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Using Paper Car 2014

The Tiny84 paper car controller includes the following two features by default. First there is a motor speed controller which allows you to directly drive two low current motors. Using FET transistors attached to the Tiny84 I can drive two high current outputs. Typically the Tiny84 delivers 20mA of current while the FETs extend this…

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