SparkFun Electronics

I’ve posted a new, part 3 article on my debugger project, along with new code and an overview video.  The new code  is now able debug an Arduino UNO running at 16 MHz and also includes some bug fixes and enhancements.   https://sites.google.com/site/wayneholder/debugwire3   https://youtu.be/F1202b0l...

Just a quick update, I've updated the code for both DebugWireDebugger and OnePinSerial to improve the automatic baud rate detection and the reliability of debugWire communication using OnePinSerial. The new code has successfully worked with an ATTiny85 running at 8 MHz. See: https://sites.google.com...

I’ve developed an Arduino sketch that runs on one Arduino and allows it to control and debug another Arduino, or an AVR-Series micro-controller such as an ATTiny85.  With some limitations, you can use the controlling Arduino to disassemble code, single step code, inspect and modify the current value...

I've written a new key input library that supports a special type of multiplexing that can scan 6 buttons using only 3 I/O pins, 10 buttons using 4 I/O pins, 15 buttons using 5 I/O pins, and so on. For more details, see my web page and video at: Introducing KeyPlexLib (or, 'Wayneplexing' on Arduino ...

I’ve designed a small circuit you can build which lets you power an Arduino On, or Off by pushing a button, or responding to an external signal, such as from a sensor. You can also use this circuit with a Real Time Clock (RTC) module to power on an Arduino at a particular time, or date and time and ...

I did read through the rules carefully, but it doesn't seem to address the two specific cases I asked about, at least with respect to ground vehicles. Manual intervention seems to be allowed in the Aerial category, but it's not clear if I can carry, or use a transmitter to stop a ground vehicle if i...

Thanks for clearing up the issue with the ramp dimensions and for the guidance on the stanchion and hoop pipe diameters. That helps a lot. On a different subject, the rules say "The vehicle must be fully autonomous and self-contained. No transmitters or communication beacons (other than GPS) of any ...

The walkthrough video (at about the 3:27 mark) indicates the width of the ramp as being 4.5' (feet). However, the diagram on the page at https://avc.sparkfun.com/2013 shows this same measurement as 45" (inches), which is substantully narrower at 3 3/4' (feet). Can you confirm which measurement is co...

It's now February and still no update on AVC? June 15 is not that far away and, for those of us coming from out of state, it would be really helpful to know a few details about the new venue and it's location so we can make travel and lodging plans. Not meaning to complain, but I do hope we can lear...

Any news, or updates? Even a few crumbs of information would be nice...

Wayne

I believe the problem is that the buffer size used to hold received characters in SoftwareSerial was reduced in Arduino 1.0. For some background on this, see my post at:

https://sites.google.com/site/waynehold ... g-with-gps

Wayne

Well, after spending an hour typing meaningless text, I decided to stop. There's still plenty of money left, but it's just not worth my time to sit here on a work day doing a totally boring task, over and over and over and over just to get $100. To all the rest of you, I wish you the best. But, hone...

I'd like an Arduino shield that looked like: http://www.sparkfun.com/products/7914 but provided the following features: 1. A beefier 3.3 Volt regulator and pins to tap this voltage 2. Switchable, onboard level convertors for selected pins, such as: a. Analog input pin 4 (SDA) and analog input pin 5 ...

After several years of saying I'm going to try but then chickening out, I finally signed up for the 2012 AVC and plan to build a ground vehicle. So, now that I've probably bitten off more than I can chew, I'm looking for advice and wondering if anyone has, or is willing to share some with a new guy ...

I've developed a simple, Java-based IDE for writing assembly code for the ATTiny10 family. I've also developed a simple HV programming circuit that works with the IDE to create a complete solution for writing code and then programming an ATTiny10 device. Since my design implements a high voltage pro...