252 Results for "bldc"

BLDC Motor Problems and Repair
Log from Open esk8 Remote - v1
In 2018, I had two bitter crashes which hurt me plenty. As a result, my front left motor broke some time later. A spring shim got damaged that reduces axial slack inside of the motor. It split into pieces (two of which I haven’t even found, yet) and...

Feelings of a BLDC Speed & Position Control
Log from STM32 Blue pill IoT expansion boards
Experimentation setupThe PS4 Joystick is a good way to manipulate multiple variables simultaneously which is suitable for experimentation. The touch pad adds possibilities for position reference.The Raspberry pi here is not needed for the BLDC control...

Controlling a brushless motor (BLDC): Software
Log from FlexSEA: Wearable robotics toolkit
As a starting point, I highly recommend reading AN857 Brushless DC Motor Control Made Easy & AN885 Brushless DC (BLDC) Motor Fundamentals from Microchip. The So, Which PWM Technique is Best? series from TI will then complement your knowledge of BLDC...

Centripetal Force and the BLDC Gyrofan
Log from TrillSat
I started to look more closely at the centripetal force equation, since I've been wary of raising the Gyrofan speed higher with its full mass, as I didn't know exactly how much force was being generated. I'd like to ramp the thing up to get appreciable...

BLDC/Gyrofan Is Back in Action
Log from TrillSat
I fully charged the two Lithium-ion battery banks (around 8.4 volts in series), but the BLDC problem that I mentioned in my previous log entry still occurred, so I wrote up a small amount of Python and C code to create a new XMPP command called "bldctest...

Controlling a brushless motor (BLDC): Hardware
Log from FlexSEA: Wearable robotics toolkit
The BLDC schematic consists of 3 copies of the Half-bridge sheet (motor commutation), the Shorted-Leads protection circuit, phase voltage sensing and bridge temperature sensing.U7 (temperature sensor) is routed close to the power MOSFETs. Figure 13 shows...

Encoder for the bldc test bench
Log from Self standing balancing robot
Rotary encoder 600 steps encoder link CAD Model nRF52 Firmware After the failure to use the qdec peripheral, fallback was on pio, interrupt, but that gives another advantage, the one of capturing timestamp on the nRF for every event, so that the log...

Plan for an improved BLDC controller
Log from prism laser scanner
Rotating polygon laser scanners need to keep track of the angular position of theprism or mirror.In an earlier version of Hexastorm, this was achieved with a Sharp A160 polygonmotor. This board has a NIBC3111 chip. Motor speed could becontrolled by sending...

Slim Cycloidal gearbox with the BLDC motor in the middle
Log from 3D Printed Robot Actuator
41:1 Dual Disk, Single stage27mm x 102dia QM4208 motor, 6809 Bearing

Second BLDC is Installed (and giving me trouble, of course)
Log from TrillSat
The replacement BLDC has been soldered in place on Circuit Board C, and the new ZIF ribbon cable connector seems to work pretty well. However, since I'm trying not to wire on top of the BLDC this time, I've just about run out of room for the circuit...

New Thruster layout, BLDC driver rabbit hole and Embedded Linux
Log from Aruna - ROV
New thruster layout design The current thruster design of the ROV is quite agile with the 6 motors the submersible is able to move in 5 dimensions. With the front (1 and 2) en back (3 and 4) motors being able to use to go in 3 dimensions (X axis, Y...

Log #9 BLDC Hybrid drive with "2-speed Shifter"
Log from Hoverboards for Assistive Devices
While I was experimenting with controlling the speed of the H/B drive wheels, I realized that really slow speed control was difficult to achieve with reasonable torque. This is unfortunate, because I'm anticipating needing slow (safe) speeds, but...

4# Drive components for the 3rd to 6th robot axis
Log from Dynamic 6-Axis Robot from scratch
Overview of the Nanotec BLDC motors and drivers: BLDC Motors:The first two axis are driven with the larger BLDC motors the rest with the smaller ones.BLDC Motor Drive:

NOMAD Quadrupedal Robot
Details from NOMAD Quadrupedal Robot
Robot mass: 18kg with Batteries Body Dimensions: 650mm L x 160mm H x 400mm W Leg link length: of 280mm Lower leg actuation: 1.4:1 chain driveJoint Actuators: (12) Custom NOMAD BLDC QDD Actuator More details to come!

PIN Assignment
Log from Field-Oriented-Control Stepper driver
The two current sense ANALOG input´s are assigned to ADC12_INP4 and ADC1_INP2, which should make it possible to use the dual ADC mode, for simultaneous samples. That leaves ANALOG temperature (thermistor) port and ANALOG voltage_divider (BUS voltage)...

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