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1  Topics / Robotics / Re: IR Battle Tanks on: June 11, 2014, 02:05:38 am
I added an Android directory to which contains Android java code used to control a Scale 1/16 Heng Long Tiger tank
I added a youtube video:
2  Topics / Robotics / Android and UDP on: June 03, 2014, 11:10:42 pm
Wow its been more than a year since my last post. 
I just finished testing out a new interface here is a list of components and why they were chosen.
1) Heng Long Scale 1/16 battle tank: Chosen because the pinouts to the board are known and lots of room to add components
2)L298 H-Bridge: Chosen for price (about $3.00 on ebay), and it can also convert 7.2V battery to 5V for Arduino
3)Access Point: Chosen for price (about $10.00 on ebay) and will allow udp communications from a Android Tablet
4)ENC28J60 module: Chosen for price (about $4.00 on ebay) and has a decent library for udp
5)Mini pro knockoff: Chosen for price (about $3.00 on ebay) and runs arduino code

A video and source code for android app and arduino mini pro will follow
3  Using Arduino / Project Guidance / Re: Control arduino via bluetooth and android(eclipse) on: March 29, 2014, 11:23:40 pm
I created a github repository that has an eclipse project for controlling an arduino module from bluetooth.
4  Topics / Device Hacking / Re: Nunchuk Eagle on: September 11, 2013, 10:16:02 pm
Created this dual nunchuk tindie project:
5  Topics / Education and Teaching / Re: Arduino Simulator Open Source in c++ using free CPP Dev Compiler on: June 10, 2013, 08:33:34 pm
Added a shift register project.  I only takes me a couple days now to add a new component.  If you have any suggestions please let me know.  Thanks
6  Topics / Education and Teaching / Re: Arduino Simulator Open Source in c++ using free CPP Dev Compiler on: June 04, 2013, 08:13:46 pm
Added a Rotary Dip project.  Video:
7  Topics / Education and Teaching / Re: Arduino Simulator Open Source in c++ using free CPP Dev Compiler on: May 15, 2013, 10:39:53 pm
Updated Simulator to include 3 digit 7 segment display.
Github repository has moved to:
Each project inside the simulator has its own dedicated sketch.
New Video posted to to demo the 3 digit / 7 segment module
8  Topics / Device Hacking / Nunchuk Eagle on: May 05, 2013, 07:10:05 pm
  There was a nunchuk eagle topic started a couple years ago but it was not answered and is now closed.
  I also would like to make a nunchuk adapter in eagle.  I know they are available at sparkfun.
  The nunchuk adapter is basically 4 connectors.  2 on the top and 2 on the bottom.
  They are .15 inches apart ( I think) and are about roughly .1 inches wide.
  The top is ground and SCL and the bottom is power and SDA.   I can wire the items in eagle.  But I don't know how to create pads that occupy the same area but on the top is one pad and on the bottom is a different pad.

  Meanwhile...2 days later....I found some helpful links including a schematic that has 2 nunchuk breakouts:

Schematic and board are referenced here:
alternate writeup:

alternate writeup:  
9  Topics / Robotics / Re: IR Battle Tanks on: March 14, 2013, 06:05:16 am
  Although you could possibly fit a raspberry pi inside a scale 1/16th tank I don't recommend it.
Remember, the raspberry pi is used for the controller.  The controller will be connected to the transmitter.
In the tank itself you will place the receiver, and yes I've made very small receivers with diy Arduinos that fit in smaller than 1/16 tanks.

  But back to the horsepower question.  This was the easiest/quickest way for me to read wiimote/Bluetooth.  I saw a link to a usb host shield solution, and I also have a Bluetooth shield that I would like to try.  But I haven't had success yet.
10  General Category / General Discussion / Re: Are we not makers? on: February 25, 2013, 10:58:29 pm
Thank you.
   Now the question is, how to integrate their library with what I'm using: stepper.h from
  or Perhaps I can just my code since it is just a goofy example for proof of concept. 

  I guess the question is how to calibrate or get the same "quality" results. 

  I have nema 17 stepper motor which I believe is standard.  I probably need to get a real table to compare results.
11  General Category / General Discussion / Re: Are we not makers? on: February 25, 2013, 07:21:54 pm
Looking for gcode module for Arduino.  There must be some libraries out there to interpret g-codes.
12  General Category / General Discussion / Re: Are we not makers? on: February 22, 2013, 12:08:59 pm
Updated schematic and ordered new pcb from Iteadstudio...Github repo updated
13  General Category / General Discussion / Are we not makers? on: February 20, 2013, 10:15:03 pm
  A friend of mine was talking about his latest rep-rap project and he mentioned that the stepper motor controller was the most expensive part.  
  Hmmm...are we not makers?  There should be no "expensive" parts.  We have the whole chinese continent churning out inexpensive components at our ebay fingertips.

   So, I was thinking: 3 hbridges to control 3 stepper motors and an mcp23017 attached by I2c to an arduino to handle any other stop switch/sensor thingies.  The hbridges were cheap only a buck or so.  Iteadstudio kicked out a pcb after a few weeks, but testing showed that the hridge I selected couldn't provide enough power to drive a NEMA-17 ($15 ebay stepper motor suitable for 3D printer).

   So that idea went on the shelf for awhile and then I saw this $4 hbridge on ebay: I used them before to drive some rc tanks.  They have plenty of power.

   And so the idea was reborn.  I'll created a github repo to open source the improved schematic and source codes to handle g-codes here:  Here is a crappy video:
14  Topics / Education and Teaching / Re: Arduino Simulator Open Source in c++ using free CPP Dev Compiler on: February 12, 2013, 09:47:29 pm
My apologize.  I corrected my name spelling.  The repo is located:
(I wasn't sure if anyone was actually checking).

I removed ArduinoBasic...that will simplify it slightly.
15  Topics / Robotics / Re: IR Battle Tanks on: February 11, 2013, 11:14:54 pm
Darn, shipping is outrageous, will have to wait until they stock this item in their US store.
I did however find this: which is basically the same motor plus a wheel for $4 with free shipping.  
  I think this would make a nice robo/battlefield base.

  I started a github repository located
  It contains a schematic for the receiver that uses an nrf24l01 and has a place for an hbridge to control 2 wheels.
  I'm going to order the pcb from iteadstudio so it will be a few weeks before I know whether it is correct.

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