Arduino from Scratch Part 8 – ATMEGA16U2 Subsystem2 Sep 2015In Part 7, we pulled together all the parts necessary to connect our USB Type B socket to a microcontroller.…
Arduino from Scratch Part 7 – Arduino USB Connection25 Aug 2015In Part 6, we covered the how and the why of the Pin 13 LED, along with the related op-amp…
Arduino From Scratch Part 6 – Pin 13 LED22 Aug 2015In Part 5, we brought the voltage comparator to a tentative conclusion (still need those LDO output caps), now we’re…
Arduino From Scratch Part 5 – Selecting Comparator Parts21 Aug 2015In Part 4 we described the way that the comparator circuit disables the 5V USB voltage in the presence of…
Arduino From Scratch Part 4 – Voltage Conflict Management19 Aug 2015In Part 3, we defined the net names for our voltages in preparation for being able to keep them well…
Arduino From Scratch Part 3 – Schematic Net Names17 Aug 2015In Part 2 we dug into the voltage regulator subsystem. After thinking about it for a bit, I wasn’t happy…
Arduino From Scratch Part 2 – Voltage Regulator Subsystem14 Aug 2015In Part 1, I broke the schematic down into bite sized subsystems, and here in part 2, I’m going to…
Build an Arduino Uno R3 From Scratch Part 112 Aug 2015I’ve been wondering what might be interesting as a series to write, that would help people to understand what this…
The Arduino SPI Library13 Apr 2015 Now that we have a firm understanding of how we need to configure the signals to communicate with a SPI…