ALog BottleLogger v3.0

Full redesign by @superchap123 that incorporates:

• Buck/boost-regulated power
• 16 channels of 16-bit ADC
• A larger form factor
• An ATMega644p processor (pin-swappable with the 1284p)

v2.2.0: ATMega328p Production Version

Fully-functional and production-ready ALog BottleLogger with ATMega328p MCU and I2C operating at 3.3V with 2-way level shifting.

v2.2.0: ALog Logo

New ALog logo and no Northern Widget logos, for production, e.g., at the University of Minnesota.

Version 2.0.2

Fixed issue with I2C connected to VCC and 3V3. Surface mount components added, updated Capacittor array pads, updated 3V3 Pads.

Version 2.0.1

Fixed issue with I2C connected to VCC and 3V3. Surface mount crystal and indicator LED addad (Goodbye domed friend!).

Version 2.0.0

The final update in the ALog v2.0x series:

• Switches the LED and SD pins to expose PWM digital pins; major change requiring software update
• Uses a single 3V3 regulator
• Fixes pin markings and updated silkscreen text
• Adds a decorative back silkscreen
• Increases capacitor array pad lengths for easier soldering

2.0 Beta

Version 2.0, Beta release. Fully functional, but the silkscreen for the Gerbers is still from the Alpha release. (This has been updated for the Eagle files.)

September

Potential final release for publication.

August

Improved packages and components

Chimborazo

Data logger version developed for field work at Chimborazo, Ecuador, in June 2016. Worked very well in general. Discovered that the 3.3V regulator usually runs low; slated to be replaced.