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Join the discussion of general engineering topics. The design, building, and use of engines, machines, and structures. Use the forum for any engineering topics not applicable to the specific categories.

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Low-Cost Object Detection System Using ESP32-CAM – Approach, Challenges
1K threads
Electronics Low-Cost Object Detection System Using ESP32-CAM – Approach, Challenges
Discover the Ideal Counterweight for Your Needs - Expert Tips
  • kjmdrumz3
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Can IR Heating Be Effectively Focused Over Long Distances for Snow Prevention?
  • A.J.710
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18
Health risks of ABS FDM (3d printing)
  • jamesson
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4
COVID An Engineer's take on testing for Covid-19
  • sophiecentaur
  • · Replies 13 ·
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13
How to Fly a B-26: Official Training Film
  • Ivan Seeking
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8
DIY large aperture optical comparator
  • Stormer
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3
17 years later: Thank you FredGarvin and Artman
  • slackwing
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5
How Fast Did This Wheel-Driven Vehicle Go?
  • ElliotSmith
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1
[Statics] Determining the normal force at an internal point of a member
  • Worn_Out_Tools
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1
Boom Angle of Crane: Is High Extension Necessary?
  • DaveC426913
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5
Vacuum Airships - would multi-skinning work?
  • some bloke
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What is left to discover or invent for the hobbyist scientist/engineer
  • Saiyan300Warrior
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How Can Engineering Moments Bring Real Emotion?
  • davenn
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7
Why Are Multi-Barreled Muzzleloaders Inaccurate Despite Aligned Barrels?
  • kalkyl
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14
Surviving Large Bases on Airless Worlds: Is It Possible?
  • Whipley Snidelash
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5
Which sub-forum is better suited for questions on robotics theory
  • PainterGuy
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1
Building a Cheap, Portable Water Level Recorder for Seiche Monitoring
  • DaveC426913
  • · Replies 13 ·
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13
Old fashioned gas stove with automatic lighting - how?
  • sophiecentaur
  • · Replies 14 ·
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14
When does the calibration uncertainty contribute to a measurement uncertainty?
  • fonz
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5
Some airplane pilot jargon: "Rotate", "Heavy"
  • Stephen Tashi
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5
Are Supercomputers Still Profitable in the Age of Cloud Computing?
  • Phylosopher
  • · Replies 7 ·
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7
Flood drainage outflow rate from horizontal 1500m drainpipe at sump
  • Point Conception
  • · Replies 8 ·
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8
Why Do Physical Systems Seek Minimum Potential Energy?
  • LawrenceC
  • · Replies 6 ·
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6
Gravity Fed Farm Animal Watering System
  • FarmerTodd
  • · Replies 11 ·
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11
How Do You Calculate Load Inertia for a Lead Screw System?
  • beashayyael
  • · Replies 10 ·
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10
Handling brake failure/stuck accelerator in auto transmission cars
  • Wrichik Basu
  • · Replies 13 ·
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13
Force on Dam: Height or Amount of Water?
  • peanutaxis
  • · Replies 19 ·
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19
Discovering Digital Twin: Experiences and Resources
  • Hraabo
  • · Replies 9 ·
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9
Unplugged Chest Freezer and It Won't Freeze Anymore - Why?
  • kyphysics
  • · Replies 8 ·
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Big Data and a Saturation Point
  • Gear300
  • · Replies 4 ·
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4
Deterministic method for cost estimation
  • LT Judd
  • · Replies 7 ·
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7
If My Water Heater Doesn't Work, Is Water Still Safe to Drink (if Cold)?
  • kyphysics
  • · Replies 19 ·
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Question about irradiance from a UV lamp
  • piscosour00
  • · Replies 6 ·
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6
How would you build a solar stove that works at night & the next morning?
  • pskpi
  • · Replies 11 ·
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11
COVID Effect of Covid-19 on architecture
  • Stephen Tashi
  • · Replies 3 ·
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3
Problem / conflict with gas appliance ventilation standard
  • Jehannum
  • · Replies 10 ·
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10
Is it possible to make a "laser" etcher using "piped" sunlight?
  • some bloke
  • · Replies 12 ·
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12
Is it possible to build a laser from a light bulb?
  • somega
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4
Can Fiber Optic Cables Create a Custom Shaped LCD Screen?
  • kolleamm
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5
Structural Systems: Steel and Reinforced Concrete (RC)
  • okandrea
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Building jig for a project, trying to think of the ISO standard that would apply
  • lee123456789
  • · Replies 10 ·
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Statics and Structural Analysis Question
  • track1716
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3
Can I Transform Multiple Steel Beams into a Single Piece of Concrete?
  • pj33
  • · Replies 5 ·
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5
Wind-Induced Bending Stress on Chimney with Rectangular Cross-Section
  • pj33
  • · Replies 2 ·
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Where to find engineering drawings?
  • AhmedHesham
  • · Replies 2 ·
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2
Is Nuclear Engineering a Stress-Free Field?
  • random_soldier
  • · Replies 5 ·
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5
Understanding Bending Moments and Moment Equilibrium in Structural Analysis
  • pj33
  • · Replies 2 ·
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2
Dumb question on attics and vents/airflow
  • kyphysics
  • · Replies 17 ·
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17
High temperature (~950 C) heating blanket
  • M_1
  • · Replies 25 ·
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25
Engine with 432,000 miles is in surprisingly good condition
  • ElliotSmith
  • · Replies 1 ·
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1
First moment of area and second moment of area
  • harryiverson
  • · Replies 4 ·
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4
How do you control the dosing of powders?
  • kunalvanjare
  • · Replies 4 ·
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4
Weird (or not) issues in thin-walled cylindrical shell buckling modes
  • Vigardo
  • · Replies 2 ·
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2
Australian Open Heat Stress Scale
  • JT Smith
  • · Replies 2 ·
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2
How did Galileo manufacture his telescope?
  • AhmedHesham
  • · Replies 11 ·
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11
What's the best software to use when designing 2D floor plans for structures?
  • Robert House
  • · Replies 11 ·
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11
Design loads for wind towers & jackets?
  • Vigardo
  • · Replies 14 ·
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14
Why Use the Parallel Axis Theorem with the Second Moment of AREA?
  • tomtomtom1
  • · Replies 3 ·
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3
Max load on inclined interlayer of easel
  • moonfifty
  • · Replies 4 ·
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4
Innovative Scientific Uses of GPS
  • anorlunda
  • · Replies 29 ·
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29
Marimba bar tuning and temperature
  • Marimba Australia
  • · Replies 9 ·
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9
What is the Safest Rule of Thumb for Designing with a Safety Margin?
  • Stephenk53
  • · Replies 17 ·
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17
Possibility of turning a threaded rod with spur gears using a motor
  • AdamQuinn
  • · Replies 20 ·
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20
Mounting fire / smoke alarms with magnets
  • Franly
  • · Replies 8 ·
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8
Can we create science from engineering?
  • Anti Hydrogen
  • · Replies 3 ·
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3
How Is Error Managed When Measuring the Difference Between Two Values?
  • liquidFuzz
  • · Replies 4 ·
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Understanding the Point Of Action of a Force
  • tomtomtom1
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3
Why Are Triangles the Optimal Shape for Bridge Design Over Arches?
  • thezi
  • · Replies 6 ·
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6
Unit of Velocity from a Random Walk measured by an accelerometer
  • hoddy
  • · Replies 2 ·
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2
Is this officer checking his radar gun calibration incorrectly?
  • berkeman
  • · Replies 15 ·
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System to collect a small amount of water from the air
  • jamesson
  • · Replies 11 ·
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11
Does water flowing through a pipe make noise?
  • member 656954
  • · Replies 20 ·
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20
Could Airships Revolutionize Affordable Housing Delivery?
  • MrCosmic
  • · Replies 26 ·
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26
How to measure a quantity of grains for an instant coffee maker project?
  • hugo_faurand
  • · Replies 8 ·
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8
How to reflect light through a glass like those in holographic sight?
  • mastermechanic
  • · Replies 2 ·
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2
Engineering Drawing: An Essential Tool for the Egyptian Engineer
  • AhmedHesham
  • · Replies 5 ·
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5
Solar heat gain on a typical solar cell
  • jeff jones
  • · Replies 27 ·
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27
How Do Tiny Speakers Produce High-Quality Sound?
  • anorlunda
  • · Replies 27 ·
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27
Civil engineering - dike improvement
  • Waffle24
  • · Replies 3 ·
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3
Calculate Shock Force with Rope Elongation in Excel
  • Jeff Randall
  • · Replies 17 ·
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17
Trends in Trainings on Engineering Standards
  • anoop_gupta
  • · Replies 2 ·
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2
The history of the home water filter
  • qnach
  • · Replies 6 ·
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6
Sizing corner reflectors for frequencies in the audible range
  • Aubergine Agonistes
  • · Replies 8 ·
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8
Is Ventilation Necessary for Safe 3D Printing?
  • anorlunda
  • · Replies 4 ·
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4
What Is the Shear Strength of a Cut I-Beam in a Cantilevered Structure?
  • vernierdesign
  • · Replies 4 ·
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4
Is a Wine Cellar Without a Cooling System Possible in Phoenix?
  • Michaeldaum
  • · Replies 5 ·
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5
Nonlinear least squares problem
  • ciaran_hughes
  • · Replies 1 ·
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1
Can I readily clamp a pipe with 450 weight without it slipping?
  • wells
  • · Replies 5 ·
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5
New technologies that are less "advanced" than old?
  • vco
  • · Replies 10 ·
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10
Heat vs Cold Protection/Insulation
  • chienphong
  • · Replies 1 ·
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1
Velocity of unspooling fishing line
  • elixirnova
  • · Replies 1 ·
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1
DFA Minimization Marking Step Guide | Zulfi
  • zak100
  • · Replies 4 ·
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4
Ethical Discussion -- Engineering used to create innovation versus destruction
  • hamin4
  • · Replies 13 ·
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Nodes in a decentralised manufacturing system
  • Student abc
  • · Replies 1 ·
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1
How much are wind farms useful to manage wildfires?
  • Z0dCHiY8
  • · Replies 48 ·
2
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48
Seeking Thermal Insulator & Electrical Insulator for Peltier Device
  • Kvm90
  • · Replies 4 ·
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4
Municipal water lines in cold climates - history of technology?
  • Stephen Tashi
  • · Replies 5 ·
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5
What about bombing versus Wildfires?
  • Z0dCHiY8
  • · Replies 14 ·
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14
Source strangulation for an instant water heater?
  • Jonathan212
  • · Replies 80 ·
3
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80
Is Biomass Really Carbon Neutral?
  • russ_watters
  • · Replies 76 ·
3
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76