<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">Hi Doug,<div class="">In case it is helpful, I used the <a href="https://cdn-learn.adafruit.com/downloads/pdf/bno055-absolute-orientation-sensor-with-raspberry-pi-and-beaglebone-black.pdf" class="">https://cdn-learn.adafruit.com/downloads/pdf/bno055-absolute-orientation-sensor-with-raspberry-pi-and-beaglebone-black.pdf</a> tutorial to make the BNO055 work with a Pi.</div><div class="">Ross<br class=""><div><br class=""><blockquote type="cite" class=""><div class="">On Jan 3, 2020, at 1:23 PM, Doug Paradis via DPRGlist <<a href="mailto:dprglist@lists.dprg.org" class="">dprglist@lists.dprg.org</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div dir="ltr" class=""><p class="MsoNormal" style="margin:0in 0in 8pt;line-height:107%;font-size:11pt;font-family:Calibri,sans-serif"><span style="font-size:12pt;line-height:107%;color:rgb(32,31,30);background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial" class="">Murray</span>,</p><p class="MsoNormal" style="margin:0in 0in 8pt;line-height:107%;font-size:11pt;font-family:Calibri,sans-serif"><span style="font-size:12pt;line-height:107%;color:rgb(32,31,30);background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial" class="">I have
enjoyed looking over the NZPRG website. I noticed that in your reply to Carl,
that you had ruled out connecting the BNO-055 to the Raspberry Pi due to the
clock-stretching issue with the Rpi I2C driver.</span></p><p class="MsoNormal" style="margin:0in 0in 8pt;line-height:107%;font-size:11pt;font-family:Calibri,sans-serif"><span style="font-size:12pt;line-height:107%;color:rgb(32,31,30);background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial" class="">There
appears to be 3 approaches to making the BNO-055 work with the Raspberry Pi.</span></p><div style="margin: 0in 0in 0.0001pt 0.5in; line-height: 107%; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><span style="font-size:12pt;line-height:107%;color:rgb(32,31,30)" class="">1.<span style="font-variant-numeric:normal;font-variant-east-asian:normal;font-stretch:normal;font-size:7pt;line-height:normal;font-family:"Times New Roman"" class=""> </span></span><span style="font-size:12pt;line-height:107%;color:rgb(32,31,30);background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial" class="">Use the BNO-055’s
serial interface. See Adafruit tutorial: </span><a href="https://cdn-learn.adafruit.com/downloads/pdf/bno055-absolute-orientation-sensor-with-raspberry-pi-and-beaglebone-black.pdf" style="color:rgb(5,99,193)" class="">https://cdn-learn.adafruit.com/downloads/pdf/bno055-absolute-orientation-sensor-with-raspberry-pi-and-beaglebone-black.pdf</a><span style="font-size:12pt;line-height:107%;color:rgb(32,31,30);background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial" class=""></span></div><div style="margin: 0in 0in 0.0001pt 0.5in; line-height: 107%; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><span style="font-size:12pt;line-height:107%;color:rgb(32,31,30)" class="">2.<span style="font-variant-numeric:normal;font-variant-east-asian:normal;font-stretch:normal;font-size:7pt;line-height:normal;font-family:"Times New Roman"" class=""> </span></span><span style="font-size:12pt;line-height:107%;color:rgb(32,31,30);background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial" class="">Add a </span><span style="font-size: 12pt; line-height: 107%; background-position: initial initial; background-repeat: initial initial;" class="">device tree
overlay device as described in <a href="https://gps-pie.com/pi_i2c_config.htm" style="color:rgb(5,99,193)" class="">https://gps-pie.com/pi_i2c_config.htm</a>
and </span><a href="https://www.raspberrypi.org/forums/viewtopic.php?t=205576" style="color:rgb(5,99,193)" class="">https://www.raspberrypi.org/forums/viewtopic.php?t=205576</a>.<span style="font-size:12pt;line-height:107%;color:rgb(32,31,30);background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial" class=""></span></div><p class="gmail-MsoListParagraphCxSpLast" style="margin:0in 0in 8pt 0.5in;line-height:107%;font-size:11pt;font-family:Calibri,sans-serif"><span style="font-size:12pt;line-height:107%;color:rgb(32,31,30)" class="">3.<span style="font-variant-numeric:normal;font-variant-east-asian:normal;font-stretch:normal;font-size:7pt;line-height:normal;font-family:"Times New Roman"" class=""> </span></span>Fix
the issue in C using the bcm2835 library as described in the book “Raspberry Pi
IoT in C” by Harry Fairhead. This book describes the cause of the problem. It
is an excellent book.<span style="font-size:12pt;line-height:107%;color:rgb(32,31,30);background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial" class=""></span></p><div style="margin: 0in 0in 8pt; line-height: 107%; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><span style="font-size:12pt;line-height:107%;color:rgb(32,31,30);background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial" class=""> </span><br class="webkit-block-placeholder"></div><p class="MsoNormal" style="margin:0in 0in 8pt;line-height:107%;font-size:11pt;font-family:Calibri,sans-serif"><span style="font-size:12pt;line-height:107%;color:rgb(32,31,30);background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial" class="">I wish
you and the NZPRG the best of luck. </span></p><p class="MsoNormal" style="margin:0in 0in 8pt;line-height:107%;font-size:11pt;font-family:Calibri,sans-serif"><span style="font-size:12pt;line-height:107%;color:rgb(32,31,30);background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial" class="">Regards,</span></p><p class="MsoNormal" style="margin:0in 0in 8pt;line-height:107%;font-size:11pt;font-family:Calibri,sans-serif"><span style="font-size:12pt;line-height:107%;color:rgb(32,31,30);background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial" class="">Doug P.</span></p></div>
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