Build Your Own Robot Arm
|Amazon.co.uk Price||:||£38.47 (14/09/2018 19:09 UTC - Detail)|
|Shipping||:||Usually dispatched within 1-2 business days|
- Brand: THUMBS UP
- Condition: Brand New
Build Your Own - Robot Arm self assemble kit - 5 motors
Before you start planning your awesome giant war robot battle-suit, or even just a friendly cybernetic house-bot to tidy your bedroom and do the washing-up for you, it might be better to start small and learn some of the basics. The Build Your Own Robot Arm is the perfect place to start.
Anyone who wants a fascinating technical challenge can build their own remote controlled robot arm with this absorbing self-assembly kit. Although simple to construct, building the robot arm is a great way to learn more about basic robot technology and control systems.
With five motors for multi-directional control of five different joints, the robot arm features base rotation, shoulder, elbow and wrist motion as well as a functional gripping claw. The gripping claw also has an integrated LED spotlight for extra illumination of anything that you are going to pick up.
The five-way directional control allows the robot arm to grab, lift, position, lower and release items smoothly and efficiently.
A wired remote controller gives the user complete control over all of these functions, and in addition to learning about robotic operation during the assembly process, manually controlling the arm is the perfect way to learn more about how machines work.
So, start with this Build Your Own Robot Arm kit and who knows what you'll be working on in the future!
>> Self assembly kit
>> Technologically advanced
>> Ideal way to get youngsters interested in science
>> Science fiction design
Your reviewer is a 59 year old Electronics Design Engineer.
The kit is well presented and the instructions are better than I expected.
IF you have the space, you should place each metal part in an easily identifiable pot so you do not, like me, have to keep referring to the page with the drawings on.
Some screws are very similar and if you force in the wrong one, you are done for the day.
The motors are small and decent quality AND with suppression capacitors which is a nice touch too.
If I have one a criticism here, it is that, at the end you have two motors with Blue/Black wiring BUT, in fairness, this is small beer and I mention it for completeness.
If you have experience with other kits, such as TAMIYA models, you will feel right at home.
Don't rush at the first stage.
The temptation is to build the 4 identical LOOKING gearboxes but wait, there are parts for 5 gearboxes and ONE of the 4 housings needs a different colour OUTPUT gear, which is in a separate bag and you MAY at first think it is missing.
Also... There are 10 plain gear shafts in the kit and ONE of these is 2mm shorter than the other 9 and this short shaft is needed for the gripper.
Use it in ignorance in the wrong place at your peril !
The kit simply falls together though it may tax the younger builder with the desire to rush the job.
A warning here.. Do not over-tighten the self tapping screws as more rotation after the solid 'stop' is now drilling a hole and if you need to remove the screw for any reason, the plastic 'thread' will be severely weakened for next time.
It's plastic.. Not a titanium composite, treat it gently.
Also... Use the right size cross head driver. IF you need to PUSH to stop the driver 'camming out' of the head, it's the wrong size.
Electrically, the kit is very good quality.
I was impressed that the weak solder joints of the wire to the battery terminals were secured with hot glue.. Nice touch. (Might use that in some of MY designs)
I followed the wiring instructions exactly, then decided I knew better and I reversed several of the motor directions by turning the plug round on the connector, because the motors seemed, to me, going in the wrong direction.
This is why some games have a "REVERSE MOUSE DIRECTION" because we plane flyers like things a certain way.
Now, some of the points to be wary of.
There are NO limit stops for the motors other than winding up the gears until they 'ping' or you stall the motor (unlikely as the gearing is VERY high, so a 'ping' it is then), or you break something, eventually.
Keep the 3 year old grandchild well away, it's a toy but not a TOY, OK?
If you damage a gear or two, they MAY be hard to replace.
The Manual suggests this is taken care of when the gears go "Da, Da, Da", (and the dog says, "Gnu, Gnu") so they are skipping (and wearing).
It's up to you.
The gripper is the thing to be gentle with in my view because the motors do overrun and the gripper can exert impressive gripping power (before things start to flex alarmingly).
Forget picking up eggs unless you like the mess. Matchboxes or soft things will protect the gears. To "Da, Da", or not to "Da, Da" that is the question ?
Likewise, do not try to lift the robot by the arm.. Hold it by the battery case and do not try to lift tins of baked beans. Stick to the weight limit. (100g).
Unnecessary load just hurts the gears, whatever the manual says.
You MAY want to run this from a mains power supply and ditch the expensive D cells.?
You need two off, THREE volt power supplies, as the motors are 3 volts and the 6 volt battery is centre tapped so the motors can be reversed. (+/- 3v)
This is not a trivial task if you don't understand electrics or electronics.
The motors take around 1/4 amp each so with decent D cells, you can get bored long before the batteries flag.
Rechargeable batteries output a lower voltage than dry cells so be ready for a small speed reduction if you use them.
Changing batteries is easy.
I would LOVE to see an advanced version of this kit with potentiometers so I can determine the position of each motor as THEN, I can write some automated motion control for some of my PIC Microprocessor projects.
Note that the USB version of a similar kit just replaces the cheap switch box with a very expensive PC to do the same task, (and you don't even get the switch box as an additional option)
You will NOT be able to program a motion towards a fixed point and stop... Not at this price.
So... Final comments.
Brilliant executive toy.
Too fragile for a child (In my view).
Fabulous introduction to parallelogram drives and motion...Read more
10 out of 10!! everything worked first time and is loads of fun picking up bits and pieces!!! I teach electronics and am going to buy another so i can have one for the kids to see at school!
you wont find it cheaper anywhere.. Maplins wanted £35.. cost including postage was £31.50 but could have been cheaper with free postage.. but i wanted it before half term.. Made it in about 2 hours and was so impressed by the design and how well all the pieces fitted together.
Buy it and have fun!