Is that an attempt to add electric start to the little 160~200cc Honda GCV? Or did you lose yet another wheel due to shaft shearing apart?
I'm kinda wondering what would be necessary to better...
Type: Posts; User: tician; Keyword(s):
Is that an attempt to add electric start to the little 160~200cc Honda GCV? Or did you lose yet another wheel due to shaft shearing apart?
I'm kinda wondering what would be necessary to better...
Typical car batteries are ~40Ah/5hr and only take a minute or so with the alternator at higher speed after starting to recover most of the energy/charge used during starting (my CR-V starts at...
...or have to ask questions multiple times over pm because older messages were lost or deleted.
DATA PACK RAT FOREVER!
How is it so damn difficult for you to read instructions? Over and over and over on multiple topic and multiple forums...
quoth the e-manual...
03-25-2020
Keep the voltage at or below 12V.
Never stall the motors ('continuous' torque of the servos is at most ~1/3 of stall torque).
Never let any joints be driven into interference...
argh. again? That library/example does not indicate what version of the SDK it is designed around or which one you are using. Older SDK versions do not necessarily support the DXL2.0 protocol or...
The PROTOCOL_VERSION must be set to 2.0.
The BAUDRATE must match the setting shown in Dynamixel Wizard.
The MAX_POS_VAL = 1023 must be changed to MAX_POS_VAL = 4095.
I did not look closely...
yep. Only one program can access a given port at any one time.
The Windows serial port (COM) interface is particularly annoying in that it operates on the absolute assumption that a port cannot...
If you are feeling adventurous, it might also be worthwhile to go with the newer XL430 servos (https://www.trossenrobotics.com/dynamixel-xl430-w250-t.aspx)...
What sort of software are you planning to use?
The Bioloid Premium kit is built around Robotis' CM-530 controller which is not compatible with the DARwIn-OP/HROS-1 framework and gait engine. It...
I'm not aware of what happened internally at Trossen, but I've not seen much of several of their long-time employees and their development platforms have shifted almost exclusively to ROS and robot...
Which versions of Dynamixel Wizard and the DXL SDK are you using? The X-series servos all use DXL2.0 protocol, which is different from DXL1.0 protocol.
RoboPlus was broken into separate downloads...
Just a little clarification: a fastener is tightened to a specified torque to exert a desired clamping force. There are a number of parameters that must be examined to correctly select a fastener...
I'm inclined to suggest a guillotine for the penny-pinching executives whose bonuses cost more than flat out replacing all the fasteners during every aircraft airframe/engine overhaul. Barely costs a...
Are these fasteners being used in any sort of life/limb threatening situation? DO NOT REUSE THEM! EVER!
The highest strength alloy steel bolts can be reused in some situations where they have not...
Lots of options.
Easiest that comes to mind is a hopper holding the unsorted parts that are fed onto a conveyor belt in a well spaced manner (one fastener on the belt every couple inches). The...
Considering a standard humanoid robot would have two arms, is it not obvious?
Anything more complex than a toy humanoid robot using hobby servos or AX-12 dynamixel servos is going to be a very...
I only add the center screw to make it easier/safer to pull the horn off the spline (just tighten the screw and it gently pulls the horn off without any force on the bearings in the front case). ...
I do not know how it could damage the motor. Improper methods can destroy the threads in the output gear/spline, or break the spline off the output gear, or crack the front face panel of the servo...
That video is infuriating. Pulling the center screw out like that before pushing on it with the bearing puller can destroy the threads in the output gear/spline.
You do not need a bearing puller....
For the MX-series, I used a spare horn to remove them, but a piece of aluminum ~3mm or thicker with a few holes drilled (and one tapped) would work just as well. The plate needs a center hole tapped...
I'm a fan of the rutan 'cast/carve foam into shape then coat with fiberglass+resin' construction method, but not used it for robots yet. The resulting composite is very stiff and lightweight (good...
Not quite what I was thinking of...
Cannot get image upload as attachment to work right now and getting a mysql error trying to access settings to add an image, but it is literally a U-bracket...
Any thoughts on combining two of the servos onto a differential similar to this to make the two-axis joints a bit more compact/robust? I'm thinking more or less a U-shaped bracket with a hard-mount...
Never touched discord before...
Hoping that quarantine will make me build stuff instead of continuing to sit on my ass, but not too hopeful. Debating whether to pay >$150 in shipping or make a...
Really hope the forums live on, at least as a reference/archive... Haven't bought anything recently, but could make a direct donation to keep them online.
...now made a hackaday.io account just in...
"A low-cost compliant 7-DOF robotic manipulator" (pdf here)
Involves two disks linked with rubber tube stuck in cutouts in the disks to make compliant linkages (flex couplings) that allow fairly...
I have not used Robotis stuff in a few years, but I specifically recall the MX-28 having neither current-limiting motor drivers nor current sensors. It had only a magnetic encoder and an H-bridge...
I was never able to access jwatte's and mine is no longer showing the thumbnail or even properly linking the image. Might be because of "invalid token"/timeout -> re-open in new tab -> restore...
More crammed than this 33x50mm thing?
7640
ATSAM D21 for control with 32k crystal, primary TB67S249 stepper driver, secondary DRV8871 brushed DC driver (for solenoid-based shutter), two...
Robotis ran into dead IC problems when using a single two-channel buffer on their earliest CM-900 boards, so they switched to two one-channel buffers at different voltages (5V TX to buss; 3.3V RX to...
The board manager definitions from this thread will probably still work......
Pretty much anytime I hear omnidirectional, it is some sort of omni-wheel or mecanum wheel system (even 3 or 4 omni-wheels balancing on a large ball for single ground contact point). Suppose the...
I've usually seen that design referred to as some variant/combination of "steered/steerable/powered caster". The willowgarage pr2 was one of the better known designs using it, so that is another...
Just needs a new boot on the spark plug connector... and might be a bit under-powered for that alternator at full load. 1[hp] is 746[W], so even 100% conversion efficiency won't give you full 24V...
For linkage based walking robots, see also: https://www.youtube.com/user/psyclopz http://www.nidona.com/marauder.html
Which is the undecided factor that goes in the square tube cutout in the actuated end of the linkages. My first thought for that was solenoid, then linear actuator (threaded rod coupled to a small...
batteryspace.com still sells plenty of LiFePO4 cells, and assorted e-bike sites sell them as well.
The 'accurate positioning on a plane' bit says indoor with human interaction not outdoor speed...
bleh. I've been encountering lots of people not reading for comprehension recently... one in particular at work last week.
jwatte, they mentioned in the very first sentences: four independently...
The problem is that battery uses a Deans / T-connector and the board does not have that anywhere on it. So, you need something like this (https://www.trossenrobotics.com/battery-wiring-harness) or...