Yet again another firmware version: the mighty 1.1.2. This one kicks the bugs out:

• Pitch wheel doesn’t interfere with note on/off commands anymore.
• Release time doesn’t get lost in space anymore.
• Unit tests are added and expanded to safeguard the quality of all the state machines in the code: MIDI decoding, envelope processing, etc.

Bigger news: the direct follow-up of the piggy is already in the making. The code name is Super Piggy, remember it.

Features:

• Next to the SAW oscillator it will get a PWM mode, with adjustable pulse width!
• No less than four additional pots (pot lovers, rejoice!) for ADSR or LFO envelope.
• Oscillator mode and ADSR/LFO controls are switchable by pushbutton and indicated by leds

The layout:

PCB’s are expected to be on their way from China to Tasty Chips headquarters in a week or two (planned to be earlier, but Chinese New Year tends to get in the way ;)) Stay tuned!

A bugfix for the Frequency Modulation feature has been uploaden. When FM modulation frequency was enabled (midi control command 0x0C set to non-zero), but modulation depth was set to 0, there was a random offset added to the pitch. Every power cycle gave a different pitch (!). This is fixed in firmware version 1.1.1.

Since this website went online, a lot has happened:

• Firmware 1.1 has been released: VCO calibration now within 1%, FM and ADSR are fully MIDI controlled, MIDI thru is working
• A new demo has been added to the main Piggy page
• Credits and specs and manual were all updated to fit the site style. Manual was also updated to explain the new firmware features