{"id":7,"date":"2014-04-15T15:28:00","date_gmt":"2014-04-15T14:28:00","guid":{"rendered":""},"modified":"2025-06-09T13:14:51","modified_gmt":"2025-06-09T12:14:51","slug":"multiwii-controller","status":"publish","type":"post","link":"https:\/\/blog.hslracing.com\/rcmodels\/2014\/04\/multiwii-controller.html","title":{"rendered":"MultiWii Controller"},"content":{"rendered":"

I recently purchased an\u00a0SK450 quadcopter<\/a>\u00a0and\u00a0dead cat conversion kit<\/a>\u00a0from\u00a0Hobby King<\/a>\u00a0along with a\u00a0KK2.1.5 controller board<\/a>.<\/p>\n

After checking out some of the\u00a0MultiWii<\/a>\u00a0websites I thought it should be fairly simple to make a\u00a0MultiWii<\/a>\u00a0board\u00a0from an\u00a0Arduino Nano<\/a>\u00a0that can make use of all the relevant guidance chips.<\/p>\n

I intend to make use of the latest release of the firmware from\u00a0code.google.com<\/a>\u00a0which at the time of writing is version 2.3.<\/p>\n

I like the idea of the\u00a0All-in-One Pro<\/a>\u00a0controller, however I don’t so much like the $50.00 (\u00a330.00) price tag, and even with this controller, GPS is still add-on functionality.<\/p>\n

I recently purchased a couple of\u00a0Arduino Nano<\/a>\u00a0boards from ebay for $6.06 (\u00a33.65) each.<\/p>\n

\"\"<\/a><\/div>\n

a couple of 10 Degrees of Freedom (DOF) boards for $10.28 (\u00a36.19) each.<\/p>\n

\"\"<\/a><\/div>\n
This board has the following modules: L3G4200D 3 axis gyro, ADXL345 3 axis accelerometer, HMC5883L 3 axis magnetic field and BMP085 for barometric pressure.<\/div>\n
<\/div>\n
A GPS antenna for $15.98 (\u00a38.99)<\/div>\n
\"\"<\/a><\/div>\n
and an I2C to serial interface for the GPS module for $5.59 (\u00a33.34)<\/div>\n
\"\"<\/a><\/div>\n
These last 2 items, I would have needed to buy for the\u00a0All-in-One Pro<\/a>\u00a0controller as well, so will not be included in any costings.<\/div>\n
<\/div>\n
The schematic for the controller is actually pretty straight forward.<\/div>\n
\"\"<\/a><\/div>\n
Most of the connections are simply one-to-one mappings with the\u00a0Arduino Nano<\/a>.<\/div>\n
<\/div>\n
I have allowed for all the normal flight controls, 8 motors, camera gimbal pitch and roll, as well as 3\u00a0I2C<\/a>\u00a0connections, the 5 pin one being for the 10DOF board, one of the others will be for the GPS, the spare could be for an LCD screen or some other functionality.<\/div>\n
<\/div>\n
The board can also be implemented with a one sided implementation and is only 1.85 inches square (47mm).<\/div>\n
\"\"<\/a><\/div>\n
Even if you choose not to use an earth plane, there would only one cross over wire, connecting ground pin of BRL (Bottom Rear Left Motor) with the ground pin for C-R (Camera Roll).<\/div>\n
<\/div>\n
I may yet make the board slightly bigger to allow for mounting holes, however I am sure it will still be under 5cm, which means it would only cost $9.99 for 10 from\u00a0Itead Studio<\/a>.<\/div>\n
<\/div>\n
The board is also simple enough for DIY etching or CNC routing.<\/div>\n
<\/div>\n
Total cost per board (assuming I use\u00a0Itead Studio<\/a>), including the 10DOF board and\u00a0Arduino Nano<\/a>\u00a0is about $14.00 or \u00a38.45, I could make 3.5 of these and still have paid less than for the\u00a0All-in-One Pro<\/a>.<\/div>\n
<\/div>\n
The final design for this board will be posted on my Electronics Projects Blog<\/a>.<\/div>\n","protected":false},"excerpt":{"rendered":"

I recently purchased an\u00a0SK450 quadcopter\u00a0and\u00a0dead cat conversion kit\u00a0from\u00a0Hobby King\u00a0along with a\u00a0KK2.1.5 controller board. After checking out some of the\u00a0MultiWii\u00a0websites I thought it should be fairly simple to make a\u00a0MultiWii\u00a0board\u00a0from an\u00a0Arduino Nano\u00a0that can make use of all the relevant guidance chips. I intend to make use of the latest release of the firmware from\u00a0code.google.com\u00a0which at the…<\/p>\n","protected":false},"author":1,"featured_media":21,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-7","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorised"],"_links":{"self":[{"href":"https:\/\/blog.hslracing.com\/rcmodels\/wp-json\/wp\/v2\/posts\/7","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.hslracing.com\/rcmodels\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.hslracing.com\/rcmodels\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.hslracing.com\/rcmodels\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.hslracing.com\/rcmodels\/wp-json\/wp\/v2\/comments?post=7"}],"version-history":[{"count":4,"href":"https:\/\/blog.hslracing.com\/rcmodels\/wp-json\/wp\/v2\/posts\/7\/revisions"}],"predecessor-version":[{"id":87,"href":"https:\/\/blog.hslracing.com\/rcmodels\/wp-json\/wp\/v2\/posts\/7\/revisions\/87"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/blog.hslracing.com\/rcmodels\/wp-json\/wp\/v2\/media\/21"}],"wp:attachment":[{"href":"https:\/\/blog.hslracing.com\/rcmodels\/wp-json\/wp\/v2\/media?parent=7"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.hslracing.com\/rcmodels\/wp-json\/wp\/v2\/categories?post=7"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.hslracing.com\/rcmodels\/wp-json\/wp\/v2\/tags?post=7"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}