Spiff's Electronics Notebook

Freeduino 2009 - a plain through hole modern 'duino (June 16, 2009)

This one's been waiting in the wings for a while. The Freeduino 2009 is a through-hole Arduino clone with Duemilanove level features like auto power-supply switching, reset on upload, and everything else you'd expect.

The !

Arduino Atmel Freeduino Kit store
Posted by spiffed at 5:47 PM

Fading LED default test sketch (February 12, 2009)

For some time now, every Arduino bootloaded ATmega we've shipped has come with a default testing sketch that slowly pulses the LED on and off in a cyclic fashion.

A "fading" sketch using hardware PWM is included in the IDE distribution under Examples→Analog→Fading to fade an LED, but the Pin 13 status LED isn't connected to a hardware PWM pin.

The answer is to abuse the delayMicroseconds call to create crude software PWM. By setting the pin high; delaying; setting the pin off; and delaying for a different period, we can change the brightness simply by altering the delay.

One catch to this approach, is if you use purely the on/off delay to control the PWM speed, you're left with either a very fast fade or an unsettling flashing. Instead we keep the delay between 4 and 250 µs (about 3 to 4kHz) and add an additional loop around each on/off loop to set the fading speed. --You can't set the delayMicroseconds code to 0 or you'll get an unexpectedly long delay.

Finally, we use the serial port to output a rising count, just to ensure the serial port works.

Continue reading "Fading LED default test sketch"

Arduino Atmel Code Freeduino Kit
Posted by spiffed at 11:11 AM

MPGuino V2 Kits (December 1, 2008)

MPGuino v2 kits are now available.

The MPGuino is an Arduino based open source fuel economy computer for most vehicles with electronic fuel injection and a vehicle speed sensor.

There are a limited number of version 1 kits still available for those wishing.

Full Kit

arduino energy freeduino kit store
Posted by spiffed at 12:14 PM | Comments (0)

Introducing the StickDuino (August 25, 2008)

Whoa, how did we miss announcing this? The StickDuino is a fully featured Arduino clone (freeduino) that allows you to carry an Arduino compatible tool around in your pocket.

Head over to it's instructions or buy one below.

Fully Assembled	Board Only

arduino Atmel freeduino kit store USB
Posted by spiffed at 2:05 PM | Comments (0)

Assembled iDuino Kits (July 31, 2008)

We now carry fully assembled iDuino kits for those who need some but don't want to solder. Because they're a special order for assembly, there's a minimum order of 5 units.

arduino Atmel freeduino kit store
Posted by spiffed at 9:35 PM

ATmega328P support in the Arduino IDE (July 21, 2008)

For some time, there's been over the upcoming ATmega328P. Basically an ATmega168 with twice as much flash, RAM, and EEPROM.

Some time ago, I was lucky enough to secure samples for another project, now after hours of tinkering, I'm pleased to show off the first working beta of a hacked IDE and bootloader.

arduino Atmel freeduino
Posted by spiffed at 3:10 AM

Introducing the DuinoStamp (June 26, 2008)

After working in collaboration with Justin Wyatt on his idea for a stamp-sized Freeduino, I'm pleased to introduce the DuinoStamp. It's a convenient breakout board allowing you to easily embed an Arduino compatible environment into your project. The same size as a 34-pin 0.600" DIP, it's easy to incorporate into bread-boards, perf-board, or PCBs. It contains all the components and connections you need, without including costly and large extras.

Head over to it's instructions or buy one below.

Full Kit	Board Only

arduino Atmel freeduino kit store
Posted by spiffed at 3:40 PM | Comments (0)

Arduino and Freescale MPX Pressure sensors (April 29, 2008)

Freescale makes a range of integrated pressure sensors with 0-5V analog outputs, in a vast array of configurations. Today, I've picked the MPXV5010DP, but you should be able to adapt this to a range of sensors.

Continue reading "Arduino and Freescale MPX Pressure sensors"

Arduino Atmel Code Freeduino Howto Pressure Sensor
Posted by spiffed at 12:10 AM | Comments (0)

New Freeduino Kits (April 15, 2008)

We're pleased to introduce our range of Arduino compatible products starting with the iDuino and MaxSerial. We hope to expand this line with shields and accessories.

arduino freeduino store
Posted by spiffed at 3:48 PM | Comments (0)

Build a MaxSerial Freeduino (April 9, 2008)

About

The MaxSerial is a MAX232 based serial board compatible with the Arduino environment.

Buy

I'm pleased to offer these as a kit, bare PCB, and fully assembled. Use the below options to purchase with-out the optional 3.3 volt supply or explore your other options.

Full Kit	Board Only	Fully Assembled

Continue reading "Build a MaxSerial Freeduino"

Arduino Build Eagle3D Freeduino Howto Kit MAX232 MaxSerial Serial
Posted by spiffed at 2:40 AM

A High-Volume Atmega Arduino Programmer and Tester (April 1, 2008)

I need to program several dozen Atmega168s and I only own ICSP Atmel programmers; what to do? Bodge one up of course. Best of all, the bodged programmer functions as an Arduino test bed.

Continue reading "A High-Volume Atmega Arduino Programmer and Tester"

Arduino Bodge Freeduino Howto Programmer
Posted by spiffed at 11:36 PM | Comments (0)

A max232 Based 'duino (March 8, 2008)

I, and some others it seems, have spotty results talking to the "official" s and their Freeduino counterparts. To that end, I present a max232 based design, complete with Diecimila layout and DTR reset.

Continue reading "A max232 Based 'duino"

Arduino Eagle3D Freeduino Kit MAX232 MaxSerial Serial
Posted by spiffed at 1:14 AM | Comments (0)