{"id":5418,"date":"2017-09-01T09:05:05","date_gmt":"2017-09-01T14:05:05","guid":{"rendered":"http:\/\/www.plastibots.com\/?p=5418"},"modified":"2017-12-29T12:21:08","modified_gmt":"2017-12-29T17:21:08","slug":"blucrawler-lego-rock-crawler-with-btbox-bluetooth-controller","status":"publish","type":"post","link":"https:\/\/www.plastibots.com\/index.php\/2017\/09\/01\/blucrawler-lego-rock-crawler-with-btbox-bluetooth-controller\/","title":{"rendered":"BluCrawler &#8211; LEGO Rock Crawler with BTBox Bluetooth Controller"},"content":{"rendered":"<p>First off.. I want to give a shout-out (and credit) to <a href=\"https:\/\/www.eurobricks.com\/forum\/index.php?\/profile\/137404-punktaconyc\/\" target=\"_blank\" rel=\"noopener noreferrer\">PunkTacoNYC<\/a> as BluCrawler is based off his <a href=\"https:\/\/www.eurobricks.com\/forum\/index.php?\/forums\/topic\/120645-moc-lego-technic-chilli-crawler\/\" target=\"_blank\" rel=\"noopener noreferrer\">Chilli Crawler<\/a>\u00a0&#8211; this is his creation. I&#8217;m \u00a0just taking it down another path.<a href=\"http:\/\/www.plastibots.com\/wordpress\/wp-content\/uploads\/2017\/09\/IMG_4104-1.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignright size-thumbnail wp-image-5498\" src=\"http:\/\/www.plastibots.com\/wordpress\/wp-content\/uploads\/2017\/09\/IMG_4104-1-150x150.jpg\" alt=\"\" width=\"150\" height=\"150\" \/><\/a> \u00a0\u00a0 \u00a0You can also find published instructions if you want to build it yourself. \u00a0For some time, I wanted to get an RC crawler, but they can be $$$. \u00a0When I came across PunkTacoNYC&#8217;s Chilli Crawler, that was it.. I figured I had 90% of the parts already in my Technic\/Mindstorms collection, so off to Bricklink I went&#8230; \u00a0 \u00a0My version is pretty much the same except that I only had the LEGO PF remote and IR receiver (he uses Sbrick). The issue is that the LEGO IR system requires line-of-sight between the remote and receiver. \u00a0Not very good.. \u00a0 \u00a0So, I decided to do something about it. \u00a0Pop over to my <a href=\"http:\/\/wp.me\/pK41j-1p7\" target=\"_blank\" rel=\"noopener noreferrer\">write-up<\/a> of <strong>BTBox<\/strong> for more on what I came up with.<\/p>\n<p>Note: This is an active project. I&#8217;m making regular changes and updating this page, so keep checking back for updates.<\/p>\n<p>&nbsp;<\/p>\n<p><strong>Version 2:<\/strong><\/p>\n<p><a href=\"http:\/\/www.plastibots.com\/wordpress\/wp-content\/uploads\/2017\/09\/IMG_4104-1.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-large wp-image-5498\" src=\"http:\/\/www.plastibots.com\/wordpress\/wp-content\/uploads\/2017\/09\/IMG_4104-1-1024x526.jpg\" alt=\"\" width=\"1024\" height=\"526\" srcset=\"https:\/\/www.plastibots.com\/wordpress\/wp-content\/uploads\/2017\/09\/IMG_4104-1-1024x526.jpg 1024w, https:\/\/www.plastibots.com\/wordpress\/wp-content\/uploads\/2017\/09\/IMG_4104-1-300x154.jpg 300w, https:\/\/www.plastibots.com\/wordpress\/wp-content\/uploads\/2017\/09\/IMG_4104-1-768x395.jpg 768w, https:\/\/www.plastibots.com\/wordpress\/wp-content\/uploads\/2017\/09\/IMG_4104-1.jpg 1632w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/p>\n<p>&nbsp;<\/p>\n<p><a href=\"http:\/\/www.plastibots.com\/wordpress\/wp-content\/uploads\/2017\/09\/IMG_4105.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-5502 size-large\" src=\"http:\/\/www.plastibots.com\/wordpress\/wp-content\/uploads\/2017\/09\/IMG_4105-1024x768.jpg\" alt=\"\" width=\"1024\" height=\"768\" srcset=\"https:\/\/www.plastibots.com\/wordpress\/wp-content\/uploads\/2017\/09\/IMG_4105-1024x768.jpg 1024w, https:\/\/www.plastibots.com\/wordpress\/wp-content\/uploads\/2017\/09\/IMG_4105-300x225.jpg 300w, https:\/\/www.plastibots.com\/wordpress\/wp-content\/uploads\/2017\/09\/IMG_4105-768x576.jpg 768w, https:\/\/www.plastibots.com\/wordpress\/wp-content\/uploads\/2017\/09\/IMG_4105-640x480.jpg 640w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/p>\n<p><iframe loading=\"lazy\" title=\"LEGO BluCrawler Tackles the Net\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/mB2nIs2NpE8?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/p>\n<p><iframe loading=\"lazy\" title=\"BluCrawler - LEGO Crawler - Course\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/Se0j4SpETHE?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/p>\n<p><iframe loading=\"lazy\" title=\"BLuCrawler - LEGO Rock Crawler V2 - Couch Challenge\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/pLkxkMj_Qyg?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/p>\n<p>After some crawling, I noticed some challenges with the design that I wanted to improve upon. \u00a0Namely:<\/p>\n<ul>\n<li>Links: Connecting links would disconnect from the ball joints during extreme climbing, or stress.<\/li>\n<li>Steering &#8211; the current design uses a M-motor and it drives in either direction based on the joystick. \u00a0I&#8217;d often find myself going too far and grinding gears. I wanted to try the servo so motion would be automatically limited.<\/li>\n<li>Steering Portals: \u00a0 The original front unit that used a combination of pieces that resulted in more play than I wanted. \u00a0I wanted to integrate the same <a href=\"http:\/\/img.bricklink.com\/P\/86\/92908.jpg\">steering portals<\/a> that the back drive unit was using.<\/li>\n<li>Motors &#8211; The XL motors are ideal for this build, but I wanted to try to see if <a href=\"https:\/\/img.bricklink.com\/ItemImage\/SN\/0\/88003-1.png\">L-motors<\/a> would do (when geared appropriately).<\/li>\n<\/ul>\n<p><strong>V2 Improvements<\/strong>:<\/p>\n<p><strong>Links<\/strong>:\u00a0 I&#8217;m now using Technic <a href=\"https:\/\/img.bricklink.com\/ItemImage\/PN\/11\/x136.png\">Wishbone<\/a> links which allow direct connections (was using <a href=\"https:\/\/img.bricklink.com\/ItemImage\/PN\/11\/32293.png\">these<\/a>\u00a0&#8211; part #32293, but they constantly popped off under stress).\u00a0 It comes at the expense that there is less side-to-side torsion movement range &#8211; but this is buffered by allowing space for the link\u00a0to slide along the axle.<\/p>\n<p>&nbsp;<\/p>\n<p><iframe loading=\"lazy\" title=\"BluCrawler - LEGO Rock Crawler V2 - Climb\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/_hXG7BzZoeQ?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/p>\n<p><iframe loading=\"lazy\" title=\"BluCrawler Front LXF\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/B743ziY_hdE?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/p>\n<p>&nbsp;<\/p>\n<p><iframe loading=\"lazy\" title=\"BluCrawler Rear LXF\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/pZZITBSRCrg?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/p>\n<p><iframe loading=\"lazy\" title=\"BluCrawler LEGO Rock Crawler - Complete\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/YPlnMRTwFGY?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<table>\n<tbody>\n<tr>\n<td><a href=\"http:\/\/www.plastibots.com\/wordpress\/wp-content\/uploads\/2017\/09\/IMG_4018.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-thumbnail wp-image-5473\" src=\"http:\/\/www.plastibots.com\/wordpress\/wp-content\/uploads\/2017\/09\/IMG_4018-150x150.jpg\" alt=\"\" width=\"150\" height=\"150\" \/><\/a><\/td>\n<td><a href=\"http:\/\/www.plastibots.com\/wordpress\/wp-content\/uploads\/2017\/09\/IMG_4021.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-thumbnail wp-image-5472\" src=\"http:\/\/www.plastibots.com\/wordpress\/wp-content\/uploads\/2017\/09\/IMG_4021-150x150.jpg\" alt=\"\" width=\"150\" height=\"150\" \/><\/a><\/td>\n<td><a href=\"http:\/\/www.plastibots.com\/wordpress\/wp-content\/uploads\/2017\/09\/IMG_4023.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-thumbnail wp-image-5470\" src=\"http:\/\/www.plastibots.com\/wordpress\/wp-content\/uploads\/2017\/09\/IMG_4023-150x150.jpg\" alt=\"\" width=\"150\" height=\"150\" \/><\/a><\/td>\n<td><a href=\"http:\/\/www.plastibots.com\/wordpress\/wp-content\/uploads\/2017\/09\/IMG_4020.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-thumbnail wp-image-5469\" src=\"http:\/\/www.plastibots.com\/wordpress\/wp-content\/uploads\/2017\/09\/IMG_4020-150x150.jpg\" alt=\"\" width=\"150\" height=\"150\" \/><\/a><\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\" colspan=\"4\">Technic Wishbone links connecting the chassis to the drive units.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><strong>Steering<\/strong>:<\/p>\n<p>I&#8217;m onto round 2 for steering.\u00a0 Per below, I decided to try a servo motor.\u00a0 The result was ok, but there were few issues. Namely that the throw was not sufficient.\u00a0 I mitigated this by completely re-building the front and back units as mirrors of each other &#8211; both with servo steering.\u00a0 This worked better, but still didn&#8217;t cut it.\u00a0 The servos were simply not powerful enough for the forces being put on the crawler as it went through obstacles.\u00a0 I ended up going back to a direct drive approach with a LEGO M Motor.\u00a0 I also was challenged with mounting and wanted something that could drive the gears and forces, but not cause something to break if I drove the motor to extreme ends.\u00a0 I decided to use a LEGO elastic drive approach.\u00a0 \u00a0To my surprise, it&#8217;s working quite well.\u00a0 It looks odd, but it works.\u00a0 I get the thrown needed.\u00a0 I was considering again mirroring the front and rear but would run into trouble if one of the motors slips out of sequence.\u00a0 This gives me another idea I may look at for <a href=\"http:\/\/www.plastibots.com\/index.php\/2017\/09\/01\/btbox-lego-power-functions-bluetooth-controller\/\" target=\"_blank\" rel=\"noopener noreferrer\">BTBox<\/a>.\u00a0 Getting into integrating some sort of sensor input. Something like taco counters like a servo would use which would allow me to keep the steering in sync.\u00a0 Sort of like a servo. Anyway, that&#8217;s a Winter project.\u00a0 I&#8217;ll update if I get around to doing it.<\/p>\n<p><a href=\"http:\/\/www.plastibots.com\/wordpress\/wp-content\/uploads\/2017\/09\/IMG_4106.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-5501 alignleft\" src=\"http:\/\/www.plastibots.com\/wordpress\/wp-content\/uploads\/2017\/09\/IMG_4106-300x225.jpg\" alt=\"\" width=\"300\" height=\"225\" srcset=\"https:\/\/www.plastibots.com\/wordpress\/wp-content\/uploads\/2017\/09\/IMG_4106-300x225.jpg 300w, https:\/\/www.plastibots.com\/wordpress\/wp-content\/uploads\/2017\/09\/IMG_4106-768x576.jpg 768w, https:\/\/www.plastibots.com\/wordpress\/wp-content\/uploads\/2017\/09\/IMG_4106-1024x768.jpg 1024w, https:\/\/www.plastibots.com\/wordpress\/wp-content\/uploads\/2017\/09\/IMG_4106-640x480.jpg 640w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p><em>Old: My adventure to modify the steering resulted in my\u00a0completely rebuilding the front unit. \u00a0 \u00a0The goal was to integrate the <a href=\"https:\/\/img.bricklink.com\/ItemImage\/SN\/0\/88004-1.png\">Servo Motor<\/a> into the design. \u00a0The challenge was where to put it. \u00a0I ended up using the space where the XL motor was from the previous design. \u00a0 For the drive motor and gearing, I used a similar approach from the original but with a different combination of gears to allow the lower torque ratings of the <a href=\"https:\/\/img.bricklink.com\/ItemImage\/SN\/0\/88003-1.png\">L-Motor<\/a> handle things. \u00a0I also managed to create a means to easily swap out gear ratios. \u00a0The current setup \u00a0has a geared down ratio but allows me to use either a 8 to 24 \u00a0(3:1) or 16 to 16 (1:1) gear set depending on the terrain. \u00a0I also replaced the original steering arm components with Technic <a href=\"http:\/\/img.bricklink.com\/P\/86\/92908.jpg\">Steering Portals<\/a>. Result is a stiffer front drive unit.<\/em><\/p>\n<table>\n<tbody>\n<tr>\n<td><em><a href=\"http:\/\/www.plastibots.com\/wordpress\/wp-content\/uploads\/2017\/09\/IMG_4024.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"size-thumbnail wp-image-5475 aligncenter\" src=\"http:\/\/www.plastibots.com\/wordpress\/wp-content\/uploads\/2017\/09\/IMG_4024-150x150.jpg\" alt=\"\" width=\"150\" height=\"150\" \/><\/a><\/em><\/td>\n<td><em>\u00a0<\/em><\/td>\n<td><em><a href=\"http:\/\/www.plastibots.com\/wordpress\/wp-content\/uploads\/2017\/09\/IMG_4025.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-5474 size-thumbnail\" src=\"http:\/\/www.plastibots.com\/wordpress\/wp-content\/uploads\/2017\/09\/IMG_4025-e1504903692391-150x150.jpg\" alt=\"\" width=\"150\" height=\"150\" \/><\/a><\/em><\/td>\n<td><em><a href=\"http:\/\/www.plastibots.com\/wordpress\/wp-content\/uploads\/2017\/09\/IMG_4022.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-5471 size-thumbnail\" src=\"http:\/\/www.plastibots.com\/wordpress\/wp-content\/uploads\/2017\/09\/IMG_4022-150x150.jpg\" alt=\"\" width=\"150\" height=\"150\" \/><\/a><\/em><\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\" colspan=\"4\">Old: Servo Motor Steering 12 Tooth Direct to Rack Unit<\/p>\n<p>Also Shows L-Motor at Top<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><strong>Remote Control:<\/strong><\/p>\n<p>I&#8217;m using the Blynk app on my phone to remotely control BluCrawler using my custom motor controller that I call BTBox (more\u00a0<a href=\"http:\/\/www.plastibots.com\/index.php\/2017\/09\/01\/btbox-lego-power-functions-bluetooth-controller\/\" target=\"_blank\" rel=\"noopener noreferrer\">here<\/a>).\u00a0 Lots of detail is at the link, but in short, I wanted to build a custom motor controller that I could use with Blynk apps and write my own sketches against.\u00a0 I&#8217;m already looking at a future version that has sensor inputs as well as things like light control etc.\u00a0 You could easily use a SBrick, or BuWizz or even the LEGO PF IR Controllers as well.<\/p>\n<p><a href=\"http:\/\/www.plastibots.com\/wordpress\/wp-content\/uploads\/2017\/08\/2017_0831_092429_001.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-medium wp-image-5437\" src=\"http:\/\/www.plastibots.com\/wordpress\/wp-content\/uploads\/2017\/08\/2017_0831_092429_001-300x225.jpg\" alt=\"\" width=\"300\" height=\"225\" srcset=\"https:\/\/www.plastibots.com\/wordpress\/wp-content\/uploads\/2017\/08\/2017_0831_092429_001-300x225.jpg 300w, https:\/\/www.plastibots.com\/wordpress\/wp-content\/uploads\/2017\/08\/2017_0831_092429_001-768x576.jpg 768w, https:\/\/www.plastibots.com\/wordpress\/wp-content\/uploads\/2017\/08\/2017_0831_092429_001-1024x768.jpg 1024w, https:\/\/www.plastibots.com\/wordpress\/wp-content\/uploads\/2017\/08\/2017_0831_092429_001-640x480.jpg 640w, https:\/\/www.plastibots.com\/wordpress\/wp-content\/uploads\/2017\/08\/2017_0831_092429_001.jpg 2016w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><\/p>\n<p><strong>Build It:<\/strong><\/p>\n<p>If you want to build BluCrawler, I&#8217;ve included the LXF files.\u00a0 Not all parts were available in LDD. Also, there were some alignment issues that would not allow me to mount certain pieces.\u00a0 This is evident in the extra parts I&#8217;ve shown in the video&#8217;s above.\u00a0 Their placement should be self-evident.\u00a0 \u00a0There are 2 L-Motors and 1 M-Motor.\u00a0 \u00a0Also, the shocks I use are black (soft spring).\u00a0 You can follow the links above to PunkTacoNYCs original Chilly Crawler if you like as well.<\/p>\n<p><a href=\"http:\/\/www.plastibots.com\/wordpress\/wp-content\/uploads\/2017\/09\/BluCrawlerComplete.zip\" target=\"_blank\" rel=\"noopener noreferrer\">BluCrawler LEGO Digital Designer LXF File &#8211; Complete<\/a><\/p>\n<p><a href=\"http:\/\/www.plastibots.com\/wordpress\/wp-content\/uploads\/2017\/09\/BluCrawlerLXF_Plastibots.com_.zip\" target=\"_blank\" rel=\"noopener noreferrer\">BluCrawler LEGO Digital Designer LXF Files &#8211; Front and Rear Units<\/a><\/p>\n<p><a href=\"http:\/\/www.plastibots.com\/wordpress\/wp-content\/uploads\/2017\/09\/Capture-1.png\">Tires <\/a>are GMade 1.9 Off Road Tires (<a href=\"http:\/\/www.ebay.com\/itm\/Gmade-MT1904-Off-Road-Tires-1-9-Inch-Wheels-EP-4WD-1-10-RC-Cars-Crawler-GM70304\/381756535374?ssPageName=STRK%3AMEBIDX%3AIT&amp;_trksid=p2057872.m2749.l2649\" target=\"_blank\" rel=\"noopener noreferrer\">Gmade MT1904 Off Road Tires 1.9 Inch Wheels EP 4WD 1:10 RC Cars Crawler #GM70304<\/a>).\u00a0 They can also be found <a href=\"http:\/\/www.rcmart.com\/gmade-gm70304-1904-offroad-tires-p-69098.html?cPath=35_1360\" target=\"_blank\" rel=\"noopener noreferrer\">here<\/a>.<\/p>\n<p>=================================================================================================<\/p>\n<p><span style=\"text-decoration: underline;\"><strong>Version 1:<\/strong><\/span><\/p>\n<p>Below is info and videos of the original version of BluCrawler &#8211; based on PunkTacoNYC&#8217;s Chili Crawler.<\/p>\n<p><iframe loading=\"lazy\" title=\"BTBox in BluCrawler\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/0jLmlsZxeZ4?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/p>\n<p><iframe loading=\"lazy\" title=\"BluCrawler Eating a Rock - With BTBox Controller\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/Vb0C1MD7oDE?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/p>\n<p>&nbsp;<\/p>\n<p><a href=\"http:\/\/www.plastibots.com\/wordpress\/wp-content\/uploads\/2017\/08\/IMG_3953.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-5419\" src=\"http:\/\/www.plastibots.com\/wordpress\/wp-content\/uploads\/2017\/08\/IMG_3953-1024x768.jpg\" alt=\"\" width=\"600\" height=\"450\" srcset=\"https:\/\/www.plastibots.com\/wordpress\/wp-content\/uploads\/2017\/08\/IMG_3953-1024x768.jpg 1024w, https:\/\/www.plastibots.com\/wordpress\/wp-content\/uploads\/2017\/08\/IMG_3953-300x225.jpg 300w, https:\/\/www.plastibots.com\/wordpress\/wp-content\/uploads\/2017\/08\/IMG_3953-768x576.jpg 768w, https:\/\/www.plastibots.com\/wordpress\/wp-content\/uploads\/2017\/08\/IMG_3953-640x480.jpg 640w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/a> <a href=\"http:\/\/www.plastibots.com\/wordpress\/wp-content\/uploads\/2017\/08\/IMG_3952.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-5420\" src=\"http:\/\/www.plastibots.com\/wordpress\/wp-content\/uploads\/2017\/08\/IMG_3952-1024x768.jpg\" alt=\"\" width=\"600\" height=\"450\" srcset=\"https:\/\/www.plastibots.com\/wordpress\/wp-content\/uploads\/2017\/08\/IMG_3952-1024x768.jpg 1024w, https:\/\/www.plastibots.com\/wordpress\/wp-content\/uploads\/2017\/08\/IMG_3952-300x225.jpg 300w, https:\/\/www.plastibots.com\/wordpress\/wp-content\/uploads\/2017\/08\/IMG_3952-768x576.jpg 768w, https:\/\/www.plastibots.com\/wordpress\/wp-content\/uploads\/2017\/08\/IMG_3952-640x480.jpg 640w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/a> <a href=\"http:\/\/www.plastibots.com\/wordpress\/wp-content\/uploads\/2017\/08\/IMG_3951.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-5421\" src=\"http:\/\/www.plastibots.com\/wordpress\/wp-content\/uploads\/2017\/08\/IMG_3951-300x225.jpg\" alt=\"\" width=\"600\" height=\"450\" srcset=\"https:\/\/www.plastibots.com\/wordpress\/wp-content\/uploads\/2017\/08\/IMG_3951-300x225.jpg 300w, https:\/\/www.plastibots.com\/wordpress\/wp-content\/uploads\/2017\/08\/IMG_3951-768x576.jpg 768w, https:\/\/www.plastibots.com\/wordpress\/wp-content\/uploads\/2017\/08\/IMG_3951-1024x768.jpg 1024w, https:\/\/www.plastibots.com\/wordpress\/wp-content\/uploads\/2017\/08\/IMG_3951-640x480.jpg 640w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/a> <a href=\"http:\/\/www.plastibots.com\/wordpress\/wp-content\/uploads\/2017\/08\/IMG_3950-1.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-5422\" src=\"http:\/\/www.plastibots.com\/wordpress\/wp-content\/uploads\/2017\/08\/IMG_3950-1-300x225.jpg\" alt=\"\" width=\"600\" height=\"450\" srcset=\"https:\/\/www.plastibots.com\/wordpress\/wp-content\/uploads\/2017\/08\/IMG_3950-1-300x225.jpg 300w, https:\/\/www.plastibots.com\/wordpress\/wp-content\/uploads\/2017\/08\/IMG_3950-1-768x576.jpg 768w, https:\/\/www.plastibots.com\/wordpress\/wp-content\/uploads\/2017\/08\/IMG_3950-1-1024x768.jpg 1024w, https:\/\/www.plastibots.com\/wordpress\/wp-content\/uploads\/2017\/08\/IMG_3950-1-640x480.jpg 640w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/a> <a href=\"http:\/\/www.plastibots.com\/wordpress\/wp-content\/uploads\/2017\/08\/IMG_3949.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-5423\" src=\"http:\/\/www.plastibots.com\/wordpress\/wp-content\/uploads\/2017\/08\/IMG_3949-300x225.jpg\" alt=\"\" width=\"600\" height=\"450\" srcset=\"https:\/\/www.plastibots.com\/wordpress\/wp-content\/uploads\/2017\/08\/IMG_3949-300x225.jpg 300w, https:\/\/www.plastibots.com\/wordpress\/wp-content\/uploads\/2017\/08\/IMG_3949-768x576.jpg 768w, https:\/\/www.plastibots.com\/wordpress\/wp-content\/uploads\/2017\/08\/IMG_3949-1024x768.jpg 1024w, https:\/\/www.plastibots.com\/wordpress\/wp-content\/uploads\/2017\/08\/IMG_3949-640x480.jpg 640w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/a> <a href=\"http:\/\/www.plastibots.com\/wordpress\/wp-content\/uploads\/2017\/08\/IMG_3948.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-5424\" src=\"http:\/\/www.plastibots.com\/wordpress\/wp-content\/uploads\/2017\/08\/IMG_3948-300x225.jpg\" alt=\"\" width=\"600\" height=\"450\" srcset=\"https:\/\/www.plastibots.com\/wordpress\/wp-content\/uploads\/2017\/08\/IMG_3948-300x225.jpg 300w, https:\/\/www.plastibots.com\/wordpress\/wp-content\/uploads\/2017\/08\/IMG_3948-768x576.jpg 768w, https:\/\/www.plastibots.com\/wordpress\/wp-content\/uploads\/2017\/08\/IMG_3948-1024x768.jpg 1024w, https:\/\/www.plastibots.com\/wordpress\/wp-content\/uploads\/2017\/08\/IMG_3948-640x480.jpg 640w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>First off.. I want to give a shout-out (and credit) to PunkTacoNYC as BluCrawler is based off his Chilli Crawler\u00a0&#8211; this is his creation. I&#8217;m \u00a0just taking it down another path. \u00a0\u00a0 \u00a0You can also find published instructions if you want to build it yourself. \u00a0For some time, I wanted to get an RC crawler, but they can be $$$. \u00a0When I came across PunkTacoNYC&#8217;s Chilli Crawler, that was it.. I figured I had 90% &hellip; <a href=\"https:\/\/www.plastibots.com\/index.php\/2017\/09\/01\/blucrawler-lego-rock-crawler-with-btbox-bluetooth-controller\/\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":4,"featured_media":5498,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[65,78,129],"tags":[77,175],"class_list":["post-5418","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-arduino-electronics","category-bluetooth","category-lego","tag-lego","tag-power-functions","has_thumb"],"aioseo_notices":[],"jetpack_featured_media_url":"https:\/\/www.plastibots.com\/wordpress\/wp-content\/uploads\/2017\/09\/IMG_4104-1.jpg","jetpack_shortlink":"https:\/\/wp.me\/pK41j-1po","jetpack_sharing_enabled":true,"post_mailing_queue_ids":[],"_links":{"self":[{"href":"https:\/\/www.plastibots.com\/index.php\/wp-json\/wp\/v2\/posts\/5418","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.plastibots.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.plastibots.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.plastibots.com\/index.php\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/www.plastibots.com\/index.php\/wp-json\/wp\/v2\/comments?post=5418"}],"version-history":[{"count":0,"href":"https:\/\/www.plastibots.com\/index.php\/wp-json\/wp\/v2\/posts\/5418\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.plastibots.com\/index.php\/wp-json\/wp\/v2\/media\/5498"}],"wp:attachment":[{"href":"https:\/\/www.plastibots.com\/index.php\/wp-json\/wp\/v2\/media?parent=5418"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.plastibots.com\/index.php\/wp-json\/wp\/v2\/categories?post=5418"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.plastibots.com\/index.php\/wp-json\/wp\/v2\/tags?post=5418"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}