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An automatic Tesla coil winder replaces repetitive hand-turning with three coordinated jobs: a spindle rotates the coil form, a carriage lays fine magnet wire across it, and a tension system manages the wire as it unwinds. Hackaday’s November 16, 2020 feature shows how one machine built for coils associated with musical Tesla coil production brings those motions together.
How the automatic Tesla coil winder works
The machine separates rotation from wire placement. A gearmotor drives the main spindle, which turns the coil form. Meanwhile, a stepper motor turns a lead screw, moving the winding carriage along a linear slide so the wire travels across the form as it rotates.
That division of motion is central to the design: the spindle controls rotation, while the lead screw controls the carriage’s traverse. Together, they automate the repeated alignment required to lay fine magnet wire across the secondary coil.
Why wire tension needs active control
Fine magnet wire can tangle if it is not handled consistently. In the featured design, a small DC motor applies torque to the wire spool, while an idler pulley moves with changes in wire tension. A linear potentiometer senses the idler’s position, giving the system feedback it can use to adjust spool behavior.
#1 Best Overall
- 【Precise Control】The automatic winding machine with automatic wire arrangement function, winding pitch accuracy up to ±0.01mm, improves the consistency of finished products. Avoid problems such as coil loosening and rubbing
- 【High Efficiency】Using 900RPM high-speed winding technology, the efficiency is more than 30% higher than the traditional equipment, can meet the needs of mass production.
- 【Widely Compatible】Auto coil winder machine is suitable for 20-46AWG metal wire, 18-46AWG fishing line, silk thread, etc. Widely used in electronics, textile, fishing and other multi-industry scenarios.
- 【Intelligent Program】Can accurately adjust the wire width, speed, total number of turns, single-layer number of turns, length, etc., can easily meet the requirements of complex coil technology
- 【Easy to Use】Intelligent design, simple and clear operation process, so that operators can easily grasp, quickly put into production
In a comment on the Hackaday article, ArcAttack collaborator Joe DiPrima described the control approach: “This unit uses a PID loop + a spring force term to regulate tension. We found with a fresh copper spool, the centrifugal force was enough to produce more drag than desired at high despooling speeds. So depending on the conditions, the loop will add drag if it needs to or assist in despooling. Was a fun problem to solve!” That comment describes this particular machine and its experience with a fresh spool; it is not a universal rule for other spool or winder designs.
What the reported winding time does—and doesn’t—mean
Hackaday’s writer estimated from the video that a coil appears to take about three minutes at top speed. That is a visual estimate, not a measured cycle time or independently verified performance result. The article does not publish a test method or a named performance statistic.
Rank #2
- 【Wide range of application】Equipped with 1.5-13mm chuck, it can be connected to clamp more molds to meet the needs of different customers.
- 【 Count function 】Count range: 0-9999 ring, which can be returned to zero after a single use.
- 【Sturdy and Durable】Upgraded iron gears, finely manufactured, durable. Transmission ratio: 1: 8. Easy to operate.
- 【Manual Coil Winding Machine Parameter】Maximum diameter of winding coil: 150mm(5.85”); Maximum width of winding coil: 100mm(3.9”). Suitable for 16-27AGW wires.
- 【Application】Suitable for winding guitar pickup coils, small motor coils, small transformers, fishing line, webbing, elastic threads, etc. Load capacity not more than 300 grams.
The story identifies the project with ArcAttack and notes that the group offered Tesla coil DIY kits at the time. It does not establish whether kits remain available or describe current partner-program terms.
What is known about the build, and what is not
Hackaday’s November 16, 2020 report says there was no build log. It describes the machine’s main mechanisms, but does not provide complete plans or enough information to reproduce or validate the design. The article tags the project with PSoC 5, but does not explain the controller implementation in its body.
Rank #3
- Suitable for small motor coils, small transformers and fishing lines in the telecommunications and electrical industries. If used on tassels, webbing, elastic threads, the load-bearing capacity should not exceed 300g.
- Equipped with a five-digit counter that records up to 99,999 turns. The transmission ratio between the spindle and the counter is 1:8.
- Pull the reset handle on the left by hand, the counter can be reset to 00000.
- The maximum diameter of coils fit to be wound: 150mm (5.91 inches)
- The maximum length of coils fit to be wound: 100mm (3.94 inches)
- Described: a gearmotor-driven spindle, stepper-driven lead-screw traverse, motorized supply spool, idler pulley, and linear-potentiometer position sensing.
- Not specified: dimensions, wire gauge, turn count, detailed control parameters, a bill of materials, or safety specifications.
- Not established: hands-on testing by the article’s writer or a reproducible benchmark for winding time.
How this approach compares with simpler winding methods
The feature does not compare commercial winders or report controlled measurements against manual winding. It does, however, illustrate design choices a builder can evaluate without treating any one approach as a proven winner.
| Design choice | What it means |
|---|---|
| Manual versus motorized winding | Manual winding avoids building a powered mechanism; a motorized spindle takes over repetitive rotation. |
| Separate versus mechanically linked traverse | The featured machine uses a stepper-driven lead screw to move the carriage separately from spindle rotation. |
| Passive friction versus feedback tension control | Simple spool friction is less involved; the featured setup senses idler movement and adjusts spool torque. |
| Simple construction versus active regulation | Adding sensing and control can address changing spool behavior, but introduces additional mechanisms and control complexity. |
These are trade-offs to consider, not comparative test results. The article does not establish that feedback control is necessary for every Tesla coil secondary or that this design is faster or more reliable than a simpler alternative.
Rank #4
- Tesla Coil Gun generates electric arcs with captivating visual and audio effects, perfect for science demonstrations, classroom experiments, and tech enthusiasts’ entertainment
- Tesla Coil Gun is equipped with a visual voltage meter displaying real-time power, providing clear visibility and monitoring of the power status to enhance control over the tool and safety in use
- Handheld Tesla Coil Kit comes with an upgraded gold-plated panel that is hard to rust, not only enhancing the aesthetic appeal but the durability
- Handheld Tesla Coil Kit is powered by 2900mAh lithium battery, enabling 10,000-time arc generating on a single charge
- Tesla Coil Arc Generator is safe to use, generating arcs with a high frequency reaching Mhz, ensuring a high-frequency skin effect
What a builder should take away
The most useful idea is the coordination of three functions: rotation, wire traverse, and tension management. The featured machine offers a concrete example of how those functions can be automated, while its missing build log means it should be treated as a project feature rather than a set of construction plans. Anyone sourcing enamelled copper magnet wire would need to choose gauge, length, and insulation details to suit their own coil design; the article does not specify them.
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Quick Recap
Best Value
- 【Wide range of application】Equipped with 1.5-13mm chuck, it can be connected to clamp more molds to meet the needs of different customers.
- 【Manual Coil Winding Machine Parameter】Maximum diameter of winding coil: 150mm(5.85”); Maximum width of winding coil: 100mm(3.9”). Suitable for 16-27AGW wires.
- 【Dial Count】For a single revolution count of 99, simple and clear. Loosen the center knob and adjust the pointer to zero the count.
- 【Sturdy and Durable】Upgraded iron gears, finely manufactured, durable. Transmission ratio: 1: 8 (fast); 1: 3 (slow), two speeds available.
- 【Application】Suitable for winding guitar pickup coils, small motor coils, small transformers, fishing line, webbing, elastic threads, etc. Load capacity not more than 300 grams.
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