DEMO MANUAL DC2026C Linduino One Isolated Arduino-Compatible Demonstration Board DESCRIPTION Linear Technologys DC2026 (called the Linduino One) is The Linduino One adds several features to the standard compatible with the Arduino Uno microcontroller board. Arduino Uno board: Arduino hardware consists of an Atmel microcontroller A 14-pin QuikEval connector provides a direct connec- with a bootloader allowing quick in-circuit firmware up- tion to a growing list of hundreds of Linear Technology dates. The software is a simple programming environment demo boards, including ADCs, DACs, Power System based on the AVRGCC compiler. This platform is popular Management, RF Synthesizers, System Monitor and because it is easy to use, both the hardware and software Control, and many others. are open source, and it can be programmed in C. We find Selectable 5V, 3.3V, 2.5V, 1.8V logic levels and analog it an ideal way to demonstrate and distribute libraries for supply on QuikEval Connector integrated circuits that have digital interfaces such as 2 Inter-Integrated Circuit (I C) and Serial Peripheral Interface An LTM 2884 provides galvanic isolation of USB data (SPI). While the Linduino One is Arduino-compatible, it and power for both safety and noise rejection. is not produced by the official Arduino team, and they do Auxiliary 7V to 20V power input on isolated side, with not receive any monetary support from this board. Please, conversion to 5V provided by an LT 3973 allowing high consider supporting them by purchasing other items from: power operation up to 750mA. DEMO MANUAL DC2026C QUICK START GUIDE The Linduino One comes preloaded with a DC590 emula- Manual Software Installation tor program (called a sketch) that allows attached demo 1) Download LTSketchbook.zip from www.linear.com/ boards to run with the standard QuikEval GUI software. docs/43958. This is the entire code base for the Linduino This allows the functionality of the board to be verified board, including all demo code, libraries for individual before starting firmware development. After evaluation devices, auxiliary functions, and HTML documentation. with QuikEval, the Linduino One can be reprogrammed Extract this file to a location for working files, such as with customer code. There is a top-level demonstration your My Documents directory or C: Projects. sketch for each parts library that provides a text terminal 2) Note: If QuikEval is already installed, please update to interface to the board, demonstrating the library functions. the latest version by selecting Tools Update Pro- The Linduino One is also available as DC2026C-KIT, which gram, then proceed to step 3. If not, download and run includes a DC934 as an easy to use example daughter QuikEval from www.linear.com/software. This installs board. DC934 is the demonstration board for the LTC 2607 the QuikEval program, as well as the FTDI USB drivers 2 dual 16-bit, I C digital to analog converter (DAC). This required for the Linduino One (and other Linear Tech- board also has an LTC2422 2-channel, 20-bit, SPI inter- nology interface boards.) Drivers are also distributed face analog to digital converter (ADC) that reads back the with the Arduino IDE, but it is recommended to let DAC output. Thus, this board demonstrates operation of QuikEval install the drivers to ensure compatibility with 2 both SPI and I C interfaces, and multichannel ADCs and the Linduino One. You will be prompted to connect the DACs. The following sections describe the procedure for board to the PC during installation. Once the installation installing the required software and operating the DC934 is complete, quit QuikEval. with both QuikEval software and with a terminal based 3) Download the Arduino Integrated Development Envi- demo program. ronment (IDE) from either While this manual describes operation with the DC934,