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- martonthenagy commented on The Shavingwood Workshop's instructable Homemade Vertical Drill Press Clamp
- martonthenagy completed the lesson Mitres in the class Table Saw Class
- martonthenagy commented on RayP24's instructable Low-Tech Moving Eyes Portrait (Rembrandt)
View Instructable »Here You can find some demos and explanations: https://www.youtube.com/watch?v=A4QcyW-qTUg, https://www.youtube.com/watch?v=BaofyuCXZ_0, https://www.youtube.com/watch?v=sKa0eaKsdA0
- martonthenagy completed the lesson Skills Infusion & Going Further in the class Arduino Class
- martonthenagy commented on loveandrenovations's instructable DIY Yard DiceView Instructable »
How your dice are making consistent numbers?I'm asking this because some edges are rounded, others not, this may lead to uneven results.
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- martonthenagy commented on stonioni's instructable DIY Contactless Magnetic Induction Bike DynamoView Instructable »
Please change the inspiration video to this (because that was deleted): http://www.youtube.com/watch?v=Zi7rsuBdm5s
- martonthenagy commented on romanursuhack's instructable How to Make a Mini Pyrography ToolView Instructable »
+1 Just for compensating the false idea of resistors.Here you _must_not_ include a resistor. Any resistor equal, or larger than 0.1 Ohm will get the most of the voltage drop, so the needles will not get any, so the power will go to the wrong place.But, You need current limiting to not burn Your house down. * When using the specified kind of phone adapters, current limiting is in the adapter. * When using 9V alkaline battery, the current limiting is in the battery, because it cannot give You too much current (based in chemistry). * When You use a powerful power supply, set up current limiting, or decrease voltage to get the ideal voltage / amperage ratio.
- martonthenagy commented on dedehai's instructable Batteryless Bicycle Safety LightView Instructable »
Great work.My personal favorite DIY induction bike light is this: https://www.instructables.com/id/Magnetic-induction-safety-bike-lights-Nearly-invis-1/
- martonthenagy commented on Slater-Victoroff's instructable How to Make an Arduino-controlled Bike-lightView Instructable »
1. A basic friction magnet gives low power, especially then you want a front light. Use a rechargable battery in every case, charge it from anything you want (with an appropriate charge controller). And drive your electronics from stabilized voltage (with dc-dc boost to 5V converter).2. The Arduino cannot give large current output needed for a front light, so you must separate it: use a transistor, or other appropriate part to drive the high current LED, and not forget about current limiting.
- martonthenagy commented on BeeblebroxTheHalfth's instructable Cheapest Bike Light Ever MadeView Instructable »
Add the current limiting resistor! There may be the case of ideal voltage of battery and LED, but when you fully charge the battery, a LED will fully open, and slowly die from overcurrent.Add something to direct the light to front. The LED light goes almost every direction, so only few goes to front. I attach my first try, it is made from aluminium foil + double sided paper + plain paper.You may buy "led lens 20mm", it is cheap, but really adds to the cost.
- martonthenagy commented on lonesoulsurfer's instructable Up-Cycle a Vintage FlashlightView Instructable »
Okay, now I understand. Thanks for your answer.
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Sawing the opening picture I was wandering about what this project will be. Finally I got it. Usually the opening picture shows the finished product...