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  1. I've been using the 4 DACs on the Analog Shield. They are bipolar. An unsigned int in the range of 0-65535 (16 bits) converts to an output voltage between -5V and 5V.
  2. Thank you very much for the quick reply, and also for modifying the .cpp and .h files for the analogShield library. I have ordered a Wi-fire board and look forward to trying it in a few days. If it works well for my project, I may be ordering a few more for students to use when they build their projects for a summer course.
  3. I've been using the Analog Shield with the uC32 board, but I was just reading the specifications on the Chipkit Wifire and would like to try using that board instead because of the much larger static RAM (512kB vs 32kB for the uC32). I read the reference manual for the Chipkit Wifire, and it appears to me that the Analog Shield should work from the hardware point of view. I tried compiling some code using the Analog Shield for the Wifire with Arduino software and chipkit-core, but the Analog Shield library gives an error "Incorrect processor type" because the board doesn't have a PIC32MX proc
  4. I have 4 uc32 boards with AnalogShields. I have been programming one set using mpide under Windows 7 for several weeks. Yesterday I was in a classroom with a group of students busily working on a project with Linux (Ubuntu 64 bit) laptops and discovered that the mpide under Linux will not upload a compiled file, such as the "blink" example, to the uc32 boards. The error message is "avrdude: stk500v2_ReceiveMessage(): timeout". I found a couple of threads on the chipKit forum reporting this error but no solution, other than using a Windows machine! The students have only next week to work on t