Macrofab Engineering Podcast

Parker ordered all the parts for the SAIM this week. The v-slot rails and brackets from OpenBuild, iES-1706 servos from Leadshine, and 3D printed parts from Shapeways. MacroFab uses 3D printed parts to make custom spacers and tooling for assembly of PCB boards. Parker will be adding acceleration to the motor controller code to make sure the SAIM does not jerk around to much. Maximum Smoothness as Stephen puts it. Stephen has bee working more on the FX Dev Board. The board has a couple different power rails. It has +15VDC, -15VDC, an adjustable +9VDC and a half rail that tracks the +9VDC rail. The half rail uses a voltage divider for the reference voltage and is powered by an opamp. See Figure 2. The 16in/16out board that Stephen made has a 16bit A/D and a 16bit D/A on it. MAX5217BGUA+ and MAX11100EUB+. One uses I2C and the other uses 3 wire spi which Parker thinks is unfortunate. See Figure 2. Stephen has some old mylar 60's era caps that his mentor in junior high gave to him. They are 500pF caps. The Super