ajoyraman

Great work! I want to make one with Nano.I find that the arduino nano has the same basic configuration as your tester on the chain and a version could be built around this by adding the other components required. I fused both the .hex file provided by you and also a .hex file which was compiled from source using Atmel Studio. I looked for a response to serial commands. With Pin7 H/L there is no response at 9600-8-N-1. to VER.. etc. My current limitation is that without an USBasp the programming is via AVRISP. I am keen to get the nano version working. Any suggestions would be appreciated.

Great work! I want to make one. I find that the arduino nano has the same basic configuration as your tester on the chain and a version could be built around this by adding the other components required. I fused both the .hex file provided by you and also a .hex file which was compiled from source using Atmel Studio. I looked for a response to serial commands. With Pin7 H/L there is no response at 9600-8-N-1. to VER.. etc. My current limitation is that without an USBasp the programming is via AVRISP. I am keen to get the nano version working. Any suggestions would be appreciated.

Dangerous! But I like your attitude. Your son will surely learn to work with his hands

I like your approach in doing projects with things lying around. Put your Sponge-Switch under the doormat outside your house and link it to a buzzer (work with batteries) and make an auto doorbell. Try turning this into a real pressure sensor by filling your sponge with graphite powder then compressing it would change its resistance. Will it work ? try and see. Best wishes for many more instructables from you11

Graet!

Excellent idea and wonderful implementation!

Very impressive work and multiplatform too. Great! Will it run on a Nano?

Must be cute! any pics'

I Love this ! Thanks for sharing

You have provided a brilliant idea for using old 7-segment dosplay's which we may have stocked up. Wonder if is possible to make a smaller version?

Good Work! Thanks for sharing!

Good idea for desoldering, any thoughts for soldering?

As one old guy to another, thanks for your encouragement.

Novel Idea, Great work!

Thanks, you could use any microcontroller ADC. My full project details are here: https://www.element14.com/community/external-link.jspa?url=https%3A%2F%2Fsites.google.com%2Fsite%2Framanajoy%2Fhome%2Fmy-zip-rar-files%2FAj_Road_Test.zip%3Fattredirects%3D0%26d%3D1

Your implementation of a POV independent of rotation speed is fantastic!

Dear Ashok, Thank you for going through the article carefully and providing your valuable input. The L/R are also interchanged in the hand drawn diagram. Here is the corrected block-diagram.

Great work!

Good Work, thanks for sharing!

Great project! There are two physical effects in action: the first is the eddy current rotating the magnet ring, and the second the magnetic flux cutting the coil to generate the emf.

Good friction, adjustable wire size, auto-centering. Great idea!

Great concept!

Great concept!

Nicely Done! Voted !

Instead of 10 Ohms if you had used 1 K's it would have been a 12K earring set. Resistors are always lying around. Great work! You have my vote.

Thanks, I was waiting for a comment like this.

Wonderful project. Thanks for sharing!

I have tried this with only a single tube. If you connect 3 X 18W tubes in parallel firstly this comes to 54W which is beyond the 40W rating. Also, as tubes in parallel may not start simultaneously whichever comes ON first is likely to get damaged. I advise you not to try this!

Many thanks for your encouragement!

Very well written, you have my vote! I wonder if this concept could be used as part of a 'modulator' in a simple transmitter scheme?

This is an excellent student project, well done! It would be nice if you could provide the actual values of your calculations based on the formulas you have used as a validation of your design. And, you need to be more careful regarding safety.

Excellent work and very well documented! Thanks for sharing!

I use little boxes. But your idea is much better. Thanks for sharing!

With a 220V AC Supply the input circuit acts like a full-wave bridge rectifier and the voltage across C5 is approx 300V DC. To obtain this DC voltage with a 110V AC Supply it could be possible to replace the full-wave bridge by a voltage-doubler circuit. I have not tried this and one would need to experiment with the capacitor values for the doubler.

I have a Asahi Pentax with several interchangeable lenses. You have given life to them! You have my vote.

Great work! This Oscilloscope is worth building for sheer pleasure of understanding the intricacies of your design.

Excellent piece of work! Thanks for sharing.

Good project and well explained! Thanks for sharing.

This is the theory of DDS:N-bit phase accumulator will have 2^N stepsEach phase step = nUsing a clock frequency = fclockfout = n X fclock/ 2^N "use this for your calculation"The frequency resolution would be = fclock/2^Nand the number of sample points on the waveform generated ~ 2^N/n = fclock/foutIn this instructable we use a 24-bit phase-accumulator with a fclock of 372kHz, the upper 7-bits go to the look-up table which has 6-bit waveform data which is output to the 6-bit d/a. We would get ~15 waveform samples at 25 kHz

Good approach but be careful that the overall structural weaight does not go up.

Good work! on completing the details of your design, fabrication and operation. Just one suggestion: Could you work out and mark the ideal CG location so that when the location of components is suitably adjusted for this the plane would be statically stable could glide comfortably in case of power failure.

Excellent contribution to the aeromodelling fraternity. This could be a starter RC model for kids. Do complete the details of construction.

Good Idea! I have a spare set of pliers which are worth this modification.

Basic idea is great! Since we do not have a feedback on the switch status and as there is likelihood of false trigger based on calls not made by us, I suggest you include a time sequence. Something like, 2 calls in 2 minutes is ON and 3 calls in 2 minutes is OFF. Thanks for sharing!

Yes I agree that was another option