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About Me
I work in embedded electronics and software, and sometimes get time to play at robotics at home.
I grew up with the ZX81 and BBC micro when computers came with a programming language for free. Previously I have tried making home projects using 8051 and PIC processors, but have always been held back by not having (free) tools that include a high level language. 20 years on, and the nice tools are all free!
I currently have a Netduino plus v1 connected to an Ardumoto shield for driving two pairs of motors on a DFROBOT ROB0003 buggy. The buggy is fitted with Sharp analogue and digital range sensors, and a pair of bumper switches. It uses a pair of opto-isolators on the PWM outputs between the Netduino and Ardumoto shield; this prevents the motors running at power on and separates the Netduino and motor power supplies. I have used my "fix it" shield to breakout connections on the Netduino. On top of the buggy I have a set of LEDs driven by a 74HC595 via SPI; the LEDs indicate current direction.
Random facts:
[*]My first computer was a ZX81 - but my first program was on a ZX80.
[*]I write code in assembler, C & C++, perl, C# and am just starting out with Python.
[*]I used to ride a 250Watt 36Volt electric bike, but gave up when we got a second car and Britain got rainy for a whole year.
[*]I am a schools ambassador for "STEM" Science Technology Engineering & Maths.
[*]I have an Android Tablet but prefer to use my Palm with 20th Century technology as it works.
[*]I got a Raspberry Pi for Christmas 2012 - going to try and link it to my Netduino Plus.
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If you are going to buy an Android tablet - make sure you have a padded room so it doesn't break when you throw it at the wall.
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Berkshire, UK
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Interests
Electronics, software.
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In Topic: How to reduce pin usage
24 May 2015 - 07:13 AM
Not always a problem, but sometimes important.
Paul
In Topic: Pull Up, Pull Down, Pulling my hair out!
24 February 2015 - 09:02 PM
Well done.
My first experience of I2C (not on a Netduino) was a very bad one. We spent around a week trying to debug our comms issue before we finally read the data sheet's errata list and found out the I2C would never work properly on the processor we were using. Then we had to work out how to make the product work without working I2C hardware - not fun!
Paul
In Topic: Pull Up, Pull Down, Pulling my hair out!
22 February 2015 - 07:39 PM
Good to hear.
When you're done, the wiki is a good place to share.
In Topic: Pull Up, Pull Down, Pulling my hair out!
20 February 2015 - 05:01 PM
My knowledge has run out now.
There have been lots of threads about I2C on the forums, but I found that searching for them does not seem to work for me.
Perhaps someone else knows if the ACK is actually checked by the Netduino?
Maybe when writing, the ACK is not checked and the Netduino just counts the number of bytes sent out.
Anyone?
In Topic: Netduino MiniSumo robot
20 February 2015 - 08:18 AM
Great project!
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