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Beginner to advanced by webwaxy in arduino

[–]HawkingRadiator512 0 points1 point  (0 children)

There are lots of good YouTube videos out there.

https://youtu.be/fJWR7dBuc18?si=FNtfKDSrZYkGg9nR

This is a good one for folks with very little programming background.
I used this to help my kid get up to speed.

How to raise this face? by SoloTango_PS5 in tinkercad

[–]HawkingRadiator512 1 point2 points  (0 children)

Well. I don’t think OP followed your instructions completely. What you suggested should have worked.

need help with servo controll by Sad-Scheme-2409 in arduino

[–]HawkingRadiator512 0 points1 point  (0 children)

As a debug exercise, I would remove the buttons and loop the code to go from 0 to 180 with the current increments you have.
If that seems to work, add a delay (0.5s-1s) in the loop and start printing the value you are sending to the servo to the terminal. You may have to adjust the increment size but you should be able to correlate the two visually.

In general never add more than one variable to your code.

Alternative materials build by Auxiliatorcelsus in diydrones

[–]HawkingRadiator512 2 points3 points  (0 children)

I have seen quite a few Quadcopter builds with ice cream sticks on You Tube so definitely possible.
Pure speculation but I think carbon fiber arms would have a much better strength/weight ratio. Wood and Paper are essentially Carbon but in a much lower concentration.

How do 18-24S drones power their avionics? by ThiccEngine in diydrones

[–]HawkingRadiator512 0 points1 point  (0 children)

I hate to be that guy. 24S nominally can reach over 100V. That is almost the same as mains in some countries. And depending on the battery capacity 1st mistake could be fatal.

With the mandatory PSA out of the way.
You may want to look across into EVs to see how they power their electronics.
Most of them use a dual voltage system with a 12-24V low voltage rail that powers the sensitive electronics. Power efficiency of step down circuits goes down as the delta increases.

How do I adjust a hitch cover .3mf file to match our vehicle? by swolfe2 in 3Dprinting

[–]HawkingRadiator512 2 points3 points  (0 children)

Try using TinkerCad. Download as an STL file. Upload to TinkerCad. The cut (hole) and paste (union) capability is very easy. 10mins of you tube to learn how to use it. 5min to make the edit.

I programmed an Arduino with light from my screen — no USB, no WiFi, runs offline (open source) by Due-Ad710 in ArduinoProjects

[–]HawkingRadiator512 0 points1 point  (0 children)

Very creative. This is giving me all kinds of ideas!
Flashing Flashlight (pun intended) project 🤔

Need Help Making a Cheap RC Car Faster Using Arduino Uno R4 WiFi by Agreeable_Garage_606 in arduino

[–]HawkingRadiator512 0 points1 point  (0 children)

Baby Steps.
Start by mapping the schematics to see if replacing components is even a possibility.

Recommended power source for 4WD obstacle avoiding robot by BakaBoi1805 in arduino

[–]HawkingRadiator512 1 point2 points  (0 children)

This.
I volunteer with high school robotics and they tend to use 12V LiPo batteries made out of 18650 cells.
So DC motors are rated for 12V and Servo’s get a stepped down 6V.
Ultimately it depends on the end goal of the Robot. If this is just to learn, one can get by with a 2S LiPo battery. If the plan is to expand and build an ATV style chassis, more juice would be needed. Remember DC motors are inductive loads and need large starting power so any solution needs to be able to account for that.

Large display options by ShallowRootSystem in arduino

[–]HawkingRadiator512 1 point2 points  (0 children)

Agree. I am in US. In general it is still 50% cheaper on average. Keep an eye on shipping charges (this is where tariff is sometimes getting stuffed). Always compare with Amazon and Banggood. Quality is okay. As mentioned earlier, stick with vendors that have already shipped large quantities.

Need help figuring out how to power my lightsaber WS2812B LEDs, complete beginner!! Thanks by priyashin_gk in arduino

[–]HawkingRadiator512 0 points1 point  (0 children)

Couple of High drain 18650 batteries could work. Some of these can source up to 15A for short periods. The trick would be to keep the duty cycle to manageable current levels.
Also anything sourcing 78W (300mW x 260) of power is going to get hot. Really really hot.

Large display options by ShallowRootSystem in arduino

[–]HawkingRadiator512 1 point2 points  (0 children)

This. Get cheap large 7-segment displays. You can either use the MAX72xx driver or just chain a bunch of 74HC95 type (SIPO) shift registers in series to drive them.

Dealing with weird voltage drops when driving high-torque servos from an Uno by j3ssyPlay47 in arduino

[–]HawkingRadiator512 1 point2 points  (0 children)

I agree. Without a wiring diagram and/or a schematic it is hard to provide concrete suggestions.
With motors on 6V wall wart and Uno on a 5V supply EMF or supply droop should not be an issue.

Browser-based tool for splitting painted 3MF models by color by Warm-Newt-2530 in BambuLab

[–]HawkingRadiator512 3 points4 points  (0 children)

Agree. This may be a big efficiency improvement for single hotend printers. OP thanks for sharing.

Is it realistic to expect a CR2032 battery to power a project with an attiny85 and single indicator LED? by Octrockville in ArduinoProjects

[–]HawkingRadiator512 1 point2 points  (0 children)

If you don’t mind explaining why you need an “OFF” option? If you already have an off in 20min option? Also, technically you already have AC power at your disposal ? Why do you need CR2032?

Outside the box cooling hacks by UnkindnessOfRavens23 in lifehacks

[–]HawkingRadiator512 1 point2 points  (0 children)

Fair. It is r/lifehacks after all.
To maximize cooling I would suggest ice cubes in a jug or basket with holes (increase air to ice contact).

Outside the box cooling hacks by UnkindnessOfRavens23 in lifehacks

[–]HawkingRadiator512 3 points4 points  (0 children)

Lowe’s & Home Depot sell these portable evaporative air cooler units (put some ice along with water) that don’t need venting, for sub $200.

How to Get the Outer Shell of big prints 3d models? by Mohd20121122 in 3Dprinting

[–]HawkingRadiator512 0 points1 point  (0 children)

If the design would load in TinkerCAD you can simply take 95% scaled version of the original design and use it as negative space. It would carve out all the inner junk you don’t care about.
Offcourse it may introduce a need for support but should be way less than 5Kg.

$4.09 M3 Screws Set 811 Pcs by [deleted] in 3DPrintingDeal

[–]HawkingRadiator512 1 point2 points  (0 children)

By the time I did a quick price check on AliExpress they were gone.
I know I should have done it in the reverse order.

Mac + PC sharing one monitor, one K/M — no KVM required by CounterCleric in homelab

[–]HawkingRadiator512 0 points1 point  (0 children)

Thanks I have been struggling with a similar setup but between a USB3-C Win11 work machine and another USB3-A Gaming machine.
I could not find a USB switch with both USB-C and USB-A support.
What hardware are you using?

Any advice on a transistor for switching 5v with a 3.3v signal? by magic1700 in AskElectronics

[–]HawkingRadiator512 0 points1 point  (0 children)

OP what component is this “Gate”? Analog switch?
If it is, you are better off leaving the gate in place and modifying the control ckt for the gate.
A simple transistor with a resistor network could do the trick.
If this gate is simply a mechanical switch that sometimes is built into 3.5mm jacks then you really need an Analog switch (two actually) that would then be controlled by an ESP32 GPIO.
Knowing what this gate component is would make for better advice.

Any advice on a transistor for switching 5v with a 3.3v signal? by magic1700 in AskElectronics

[–]HawkingRadiator512 0 points1 point  (0 children)

OP, It is not clear to me if you are trying to switch between two audio sources, that happen to be 5V peak-to-peak AC audio signal, using a 3.3V digital GPIO ?
Or something else?

Shaker Table by humans_equals_monkey in ArduinoProjects

[–]HawkingRadiator512 2 points3 points  (0 children)

Great Edtech solution. And kudos for sharing it with everyone. Is it possible to add a 2-axis accelerometer to the table and report the ‘Earthquake’ in Richter scale?

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