Arduino-Compatibles on Make:

Phillip Torrone posted in his Soapbox column on Make: yesterday: 'My Top 10 Favorite Arduino-Compatible “Clones” and Derivatives' with examples showing the broad spectrum of board variants. All of them (except the Menta) were already on my Arduino-compatible boards spreadsheet, and after commenting with a link, I've been inundated with emails suggesting other boards to add-- wonderful!!

Yesterday I added:

• Femtoduino: Fabio Varesano's tiny 328-based board with .05" pin pitch.
• Menta by Adafruit fits in an Altoids tin, has a prototyping area and is shield-compatible!
• Minuino is another fine Spikenzie Labs Arduino-compatible board with as few components as possible and the smallest footprint to accommodate shields.
• ReaDIYmate is a Kickstarter project which Seeed is pre-selling, including WiFi, MP3 decoding, a MicroSD slot, and audio amplifier... wow! BUT: the Kickstarter isn't funded yet! Go support this cool board!! Update 4/26/12: I did!! Update 4/29/12: It got funded! $27,143 of the $25K goal, excellent!!

Suggested boards I'll look into: AllgaierShops Breadboard Adapter (BYO ATmega), SMDuino (design only), MHVBoard (also design only), two boards from Ro-Bot-X Designs, JeeNode Micro, and maybe Akafuino X and a few other xmega boards which are not strictly Arduino-compatible (yet?).