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Dubbie Dubbie's Blog

38 posts
I took the Nano controller that I used with the small train from my SuperRobot and just reconnected it to the battery and DC motors on my DCMotorMobot. This is all connected outside the 3D printed shell so is just dragged or pushed along but I wanted to make sure that the motor driver H bridge PCB that I was using would work with these motors, as it didn't work very well with my SuperRobot. As you can see from the video below, it all worked fine.     I have purchased some Arduino N ...
Just came back to my house to find an envelope containing some stuff from Tariq and Element 14. Not entirely sure why they sent me some stuff as I am not a recent winner of Project14. Maybe it was for being a runner up or a presenter or just being nice. Whatever it was for it is gratefully received. Some stickers, a presenter14 T-shirt (which looks sufficiently large), a MKR Zero and a MKR connector PCB, all very good. I had seen the MKR Zero previously and was interested in it so I am very plea ...
I printed out the remaining part for my half dome head for the DC  Motor Mobile Robot and I decided that I did not really like it. It didn't fit together particularly well and it just didn't look very good. So, I decided to return to my original idea of a complete dome head. This was quite simple to do although it took 2 1/2 hours to print the dome. The new base plate took another hour. However, these two parts now fit nicely together with a good interference fit and I think it looks much b ...
The next step in my DC motor mobile robot was the 3D printing of the top dome part. The purpose of this part is to contain some sensors so that the mobile robot can obtain information about the environment in front of the chassis. By making this a rotating dome it enables the use of single dimension sensors such as ultrasonic, infrared or even laser rangefinder sensors, as well as having the potential to include one or more cameras, as well as appropriate displays to provide information to the u ...
The next step in my DC Motor Mobile Robot is to add the battery container. This is a 3D printer box that a slightly smaller 4 x AA battery holder fits into. I decided to use a smaller battery holder as the original one did not leave any room for putting some sides onto it. The downside of the smaller battery holder is that it doesn't have an ON/OFF switch but that should not really matter, once I have the controller added.   The battery holder fitted perfectly so what was needed next was a ...
Having purchased some of the Micro Metal GearMotors I decided to make a small mobile robot to try them out. As the motors are so neat I decided that I would try to make a mobile robot that was also 'neat' and try and make it look as nice as possible. Most of my builds are cobbled together and look rather haphazard so I thought I might try and make a nicer looking one with everything perfect, or as perfect as I can manage.   Below is the chassis that I have designed and 3D printed. I have c ...
In the recent Month of Robots competition I made something I called SuperRobot, but disapprovingly it wasn't so super as the DC motors and drivers I selected just didn't seem up to the task of moving the quite heavy chassis. I decided that I needed to get some better DC motors and gain a better understanding of the DC motor driver PCBs that are available for them. Enrico Miglino recently illustrated some neat and small DC motors with metal gears and I thought they looked so good that I would get ...
dubbie

My Spanners

Posted by dubbie May 9, 2019
Recently there have been some blogs about the different tools that various Element14 members own and use so I decided to display my set of spanners and sockets that I have gathered over my lifetime. The ones I like the most are the ones I purchased most recently, which are slim, small and shiny. I bought a set for my son and decided they were so nice I had to have a set for myself. Then there is my earlier set of very small spanners, the smallest set that I could find, which I purchased when I r ...
dubbie

My New Robot

Posted by dubbie Mar 26, 2019
Just received my latest robot called Super Fighter, already assembled which is a change for me. I was attracted to this robot as it had a reasonable price, it looked good, it was supposed to walk (which it does - sort of), fire a 'laser', speak and most importantly, fires foam disks out the front.     It is quite an interesting design as most parts are independent of all others. The laser arm contains it's own motor and LED, the two legs have a motor in each foot, the head just cont ...
It has been a few weeks since I last did any work on my TinyMoBot.   TinyMoBot #6 : The Transparent Version    The battery pack I was using was a 4xAA pack and was much too large to fit inside the glass cover being used. So I decided to purchase a battery booster to take a 3.7V LiPo battery I had to the 5V needed by the rest of the system. As I was ordering this component I decided to get a smaller Arduino as well and settled on the Beetle which is small but does seem rather ex ...
I have a problem with the Element14 web site. Whenever I try to view my emails and messages the number next to the bell turns to a dash and no matter what I do I cannot view any of the messages. Additionally, I cannot create a Blog or look at my actions until after I have selected another process from the drop down menus - at which point the number of messages re-appears and everything works again, except for accessing messages. I'm sure I saw some similar problem to this in another Blog somewhe ...
For my TinyMobot  project ( Tiny24hourMoBot #5 : Post Script - Making it even Tinier ) I have been looking for some smaller motors to replace the continuous rotation micro servo motors I currently use. I have ordered a selection of various types, including some small stepper motors and the first of these have arrived.   There are micro DC motors approximately 8 mm long and 4 mm in diameter. They are designed to be vibrators in mobile phones so come with an off-centre weight attached. ...
eI have now re-assembled the robot arm more correctly and connected all the wiring together and it is all working, sort of!   I downloaded the correct software now as I think the software I was looking at in Blog4 was the right one. LewanSoul make all their software downloads available in the same place so you have to look for the right one rather than just download what shows on the robot you are looking at. Anyway, once downloaded and everything plugged in it started to work. I wasn't su ...
Having completed the mechanical assembly I moved onto the electrical assembly, which is essentially just the connecting of the servo motors inserial format to the controller and then adding power. However, when trying to wire up the servo motors I discovered that I had made a small mistake right at the beginning when assembling the base where I had turned one of the plates the wrong way up. What this meant was that two holes did not align and therefore the small three wire cables used to connect ...
I have now completed the mechanical build of the LewanSoul xArm Robotic Arm. Apart from a few quirky bits in the video (only) construction guide I was able to put the whole arm without too much difficulty. There are still a few aspects that I am not sure about but I assume these will be sorted out during the wiring and calibration processes, which are the next steps.       So far it has all been good and seems well worth the money that I spent on it.   Dubbie ...