https://github.com/olikraus/u8glib Using SSD1306 based 128×64 I2C display + arduino Uno Worked fine with the Adafruit library and others that use the default Arduino Wire library. Eventually after pulling my hair out for awhile I figured out it was because the default arduino library turns on the internal pullup resistors in the atmega chip, and my…
Robotics
Electronics, Robotics
Auto USB/Battery input selector using 2x P channel MOSFETs
by Chester Lowrey • • 0 Comments
Reference for the idea What do you think? I still need to test this on a breadboard… I know you could use a schottky or normal diode on the 5V USB side as I am going to regulate it down to 3.3V anyway so the voltage drop is inconsequential. I know it looks like the…
Electronics, Robotics
Chip Scale 12 Pin ATTINY20-UUR
by Chester Lowrey • • 0 Comments
Possibly the smallest 12 pin micro-controller currently available? Highlights: 1.5 x 1.4 x .5 mm 🙂 2KB 12Mhz 10 IO pins .4mm pin pitch Possible to route 8 of the IO using .127mm (5mil) traces and clearance You loose one internal pad due to trace width, and another external pad because one of the internal…
Arduino
Sublime Text + Stino Plugin = Arduino programming in a nice IDE
by Chester Lowrey • • 2 Comments
Robotics
One Inch Robot Starting Point
by Chester Lowrey • • 0 Comments
My mostly custom parts database for the PCB CAD program Target3001 : Download Database Individual component parts datasheets: VEMD2023SLX01 Â Photo Pin Diode SMD Side Looker Manufacturer Datasheet Buy From Digikey Buy From Mouser Part File for Target3001 Download VSOP38338Â Preamplifier Circuit for IR Remote Control Manufacturer Datasheet Buy From Digikey Buy From Mouser Part File for…