Are you wanting to broaden your knowledge of electronics and want to gain a general knowledge about DC motors, but haven't found the right resources because it all seems so daunting? Demystify the DC motor and learn more about their types and applications at @motbots !

DC Motors Demystified: A Deep Dive into Their Types and Applications:
➡️ https://motbots.com/dc-motors/

#motbots #dcmotor #electronics

As you know, a #DCmotor proportionally rotates in with direction's flow of #electricalcurrent🤔! This #electroniccomponent, H-bridge, #howitworks is ability to switch directions' flow of #umeme, so is why #controlunit of #controlsystems uses it to enable automated bi-directional movement of..👇

www.5021.tips/ujanja/ECU

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#teachyourself #autoelectrical #umeme #wiring #ECUrepairs #HapaUjanjaTu #jifunze #mwenyewe #doityourself #techtips #5021tips #repairtips #ECUprogramming #keyprogramming #cars

Code Club Electronics 17

https://personaljournal.ca/paulsutton/code-club-electronics-17

Code Club Electronics 15

https://personaljournal.ca/paulsutton/code-club-electronics-15

How to control a DC motor via ESP32 and Bluetooth with L298N on PlatformIO

https://www.techrm.com/how-to-control-a-dc-motor-via-esp32-and-bluetooth-with-l298n-on-platformio/

#bluetooth, #breadboard, #DCmotor, #digital, #digitalelectronics, #Dupontcables, #esp32, #Hbridge, #internetofthings, #iot, #L298N, #library, #linux, #NodeMCU, #platformio, #PWM, #tutorial

Super Simple Camera Slider With A Neat Twist

When you get into making videos of products or your own cool hacks, at some point you're going to start wondering how those neat panning and rotating shots are achieved. The answer is quite often some kind of mechanical slider which sends the camera along a predefined path. Buying one can be an expensive outlay, so many people opt to build one. [Rahel zahir Ali] was no different, and designed and built a very simple slide, but with a neat twist.

This design uses a geared DC motor, taken from a car windscreen wiper. That's a cost effective way to get your hands on a nice high-torque motor with an integral reduction gearbox. The added twist is that the camera mount is pivoted and slides on a third, central smooth rod. The ends of this guide rod can be offset at either end, allowing the camera to rotate up to thirty degrees as the slide progresses from one end to the other. With a few tweaks, the slider can be vertically mounted, to give those up-and-over shots. Super simple, low tech and not an Arduino in sight.

The CAD modelling was done with Fusion 360, with all the models downloadable with source, in case someone needs to adapt the design further. We were just expecting a pile of STLs, so seeing the full source was a nice surprise, given how many open source projects like this (especially on Thingiverse) do often seem to neglect this.

Electronics consist of a simple DC motor controller (although [Rahel] doesn't mention a specific product, it should not be hard to source) which deals with the speed control, and a DPDT latching rocker switch handles the motor direction. A pair of microswitches are used to stop the motor at the end of its travel. Other than a 3D printer, there is nothing at all special needed to make yourself quite a useful little slider!

We've seen a few slider designs, since this is a common problem for content creators. Here's a more complicated one, and another one.

#digitalcamerashacks #cameraslider #dcmotor #motioncontrol #pan #tilt #timingbelt

Teaching A DC Servo Motor To Act Like A Stepper

[Frank Herrmann] had an interesting idea to turn a geared DC motor into a servo motor assembly, but with a stepper motor-like interface. By stacking some small PCBs behind the motor body, it was possible to squeeze a DRV8837 DC motor driver and a pair of hall effect sensors on the first PCB layer, with the magnetic encoder nestled tightly behind it. Pin headers at the edge of the PCB connect to a second PCB bearing the microcontroller, which is based on the cheap STM32L432. The second PCB also holds an associated LDO and debug LED. Together, this handful of parts provide all that is needed to read the encoder, control the motor rotation and listen on the 'stepper motor driver' interface pins hooked up to the motion controller upstream. The Arduino source for this can be found on the project GitHub.

Whilst [Frank] mentions that this assembly has a weight and torque advantage over a NEMA 17 sized stepper motor, but we see no hard data on accuracy and repeatability which would be important for precise operations like 3D printing.

This project is part of a larger goal to make a complete 3D printer based around these 'DC motor stepper motors' which we will watch with interest.

While we're on the subject of closed-loop control of DC motors, here's another attempt to do the same, without the integration. If these are too small for you, then you always repurpose some windscreen washer motors.

#hardware #closedloop #dcmotor #gearedmotor #steppermotor #stm32

Electric “Radial” RC Aircraft Motor

For a long time radial aircraft engines, with their distinctive cylinder housings arranged in a circle, were a common sight on aircraft. As an experiment, [KendinYap], wanted to see if he could combine 3 small DC motors into a usable RC aircraft motor, effectively creating an electric radial engine.

The assembly consists of three "180" type brushed DC motors, mounted radially in a 3D printed casing. A 3D printed conical gear is attached to each motor shaft, which drives a single output gear and shaft mounted in the center with two bearings. The gear ratio is 3:1. A variety of propellers can be mounted using 3D printed adaptors. As a baseline, [KendinYap] tested a single motor on a scale with a 4.25-inch propeller on a scale, which produced 170 g of thrust at 21500 RPM. Once integrated into the engine housing, the three motors produced 490 g of thrust at 5700 RPM, with a larger propeller. Three independent motors and propellers should theoretically provide 510 g of thrust, so there are some mechanical losses when combining 3 of them in a single assembly. However, it should still be capable of powering a small RC plane. It's also not impossible that a different propeller could yield better results.

While there is no doubt that it's no match for a brushless RC motor, testing random ideas just to see if it's possible is usually fun and an excellent learning experience. We've seen some crazy flyable RC power plants, including a cordless drill, a squirrel-cage blower, and a leaf blower.

#dronehacks #enginehacks #dcmotor #radialengine #rcairplane

Revolving Plant Tower is Solar-Powered

Do you live in a small or yard-less space, but want to grow things anyway? You're not totally out of luck -- you'll just have to get creative and probably vertical with your planting scheme. And since apartments and other smallish dwellings often have a limited amount of exposure, it would really help a lot if you could somehow rotate the plants so that they receive even sunlight.

[JT_Makes_It]'s rotating strawberry tower ticks all these boxes and more. The 12 V solar cell powers a small DC motor that spins at the gentle speed of 0.6 RPM. The tube is hanging from a swiveling carabiner that acts like a clutch -- if a strong wind comes along or something bumps into it, the motor will continue to spin the carabiner.

[JT_Makes_It] already had a tube with holes, though they did cut several more into it. As built, this is not exactly apartment dweller-friendly, unless you have off-site access to things like plasma cutters and welding equipment. But as they point out, you could theoretically use PVC and a hole saw and make it shorter and therefore lighter. We think this looks great, although we're a bit concerned about the weight. Not so much on the mechanism itself; that looks strong. We're just wondering how long that carport frame will support it. Judge the build quality for yourself from the video after the break.

Did you know that strawberries can do tricks? Fasciation makes fanned-out berries, and vivipary makes them hairy.

#mischacks #carabiner #clutch #dcmotor #solarcell #solarpower #strawberries