AD5791 20Bit DAC Evaluation board with Arduino

I’ve been playing with a 20bit DAC today. This is a precision DAC from Analog devices which is interfaced over SPI. There’s some non-Arduino example code on github here. I hacked around with this so I could test the board on an Arduino. The code is below. Gotchas included: forgetting to connect the Voltage Reference!, …

LTC1859CG Evaluation board with an Arduino

I’ve been playing with a LTC1859 Evaluation board. Linear supply code for their Linduino platform (which costs a lot) and a cable to connect to it. However the Linduino is really just a standard Arduino with a special connector. I wired up the SPI interface to the board as shown above and it works fine …

Picomotor 8351 Internal Pics

I decided to have a poke around in one of the Picomotors I bought. The construction is fairly simple. I’ve annotated the above picture and it matches the description in the product documentation well: A nice neat little construction! More pics below: For blog updates and more follow me on twitter.

Playing with Picomotors

I’ve written about slip-stick motors before here and I’ve now purchased a couple from ebay to play with. I acquired both 30nm and 100nm resolution Picomotors and a Picomotor 8701 driver. This post documents the process on getting them up and running. This is the 30nm resolution motor: It’s kind of seen better days. The …