High Voltage EPROM Man


Introduction: High Voltage EPROM Man

About: Electromechanical Engineer, Product Designer, Maker. I love to make prototypes and teach others in the process. I graduated from UCF and spent two years working at NASA.

Meet EPROM Man. He has an EPROM body, bulb socket head, with a 16MHz crystal for eyes, fuses for arms, fuse clips for hands, adjustable caps for knee caps, and MOSFET feet. He was inspired by a similar robot that my Father in Law made many years ago.

Step 1: Things You'll Need

1. High Voltage Generator

2. Toggle Switch

3. 9V battery or any other battery 3V and higher.

4. EPROM and other electronic components.

5. Heat Shrink tubing, electrical tape and hot glue for insulation.

Step 2: Schematic

Connect the positive end of your battery to the toggle switch and the negative end directly to the high voltage generator. Solder some thick wire to the output of your high voltage generator. Be sure to insulate as much as possible to prevent sparks inside your enclosure. If you're unsure, just use hot glue. One thing to consider is that 9V batteries do not have a very large capacity and will not last very long in this configuration. Using multiple AA batteries would last much longer.

Step 3: Be Creative

Once you have everything wired up, solder your components together and use glue where necessary. Be creative and make what ever you feel like making. If you want to have arcs in the window of the EPROM like mine, make sure your arms and hands are electrically connected to the EPROM pins.

WARNING: This is high voltage so please be careful when supplying this with a high capacity source.

Before you make any assumptions as to how dangerous this is, consider the following:

1. The gloves aren’t for shock protection, I just like gloves.

2. The voltage is about 12kV-16kV measured with a high impedance HV meter not the 400kV that the module claims.

3. This is using a simple voltage multiplier found in most cheap stun guns on the market that are designed to output less than 10mA for safety reasons when used as intented. Add that with the fact that I’m using a 9V battery as the source that has a very low output capacity and you'll see that this thing is only capable of a few milliamps.



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    can we use the 400kv generator to make fractal art or

    Lichtenberg figures?

    I'd love to incorporate this into a future Astromech build if it's battery operated!

    How exactly are the sparks getting into the chip? You have the arms soldered to both sides of the chip, BUT to each other....So is it going into the pins,and then out the other side via air/chip gap? I'm confused on how you are getting arcing like this. I would think that one side of the chip is attached to one leg of the HV module, and the other side of the chip, to the other leg of the HV module.

    1 reply

    You can do it like you are saying by hooking it up to each side of the chip but I wanted a sturdier robot. Look closely at the video and you will see that is arcing across the feet too. The current takes all available paths that the source is capable of supplying. It even works with a single AA battery.

    Instead of 9V batteries, do you think an AC to DC converter would work?

    2 replies

    Check with the input specs on the HV module. I tried an old multi-voltage 12v car power plug....but it didn't work. I checked my specs, and it needs 2-6a input at 3-6v!!! So a simple AC-DC psu might not have enough power for it to work.

    Yes, but I would stay within 3V-6V if using a DC power supply.

    I'm using a m27C512, basically the same device with more memory on board. I can not get the arc across the internal chip. Looking at the video both arms are electrical shorts, to themselves and the pins on the chip. Is this correct?

    I can get an arc from wire to wire. Otherwise my arc goes from wire to "hand" on each end.

    For the legs:
    Talon Electronics (www.talonix.com)
    VRC0044 1-12pf Johnson T9-5 Slot adjust air variable capacitor $1.55 each

    2 replies

    You may need to take a chip and bend out all of the pins and experiment to find out which pin combinations will give you a nice arc in the window. This may also greatly vary depending on the the material the die was potted in. It may not work at all in your chip, but I'm not sure.

    No problem. I'll see what works. Worst case back to e**y for the matching chip. Great little project by the way, It's been fun.

    Very nicely done! One of the best "I have to make one for myself" projects I've seen in awhile. Question on the legs: What did you use for the upper part of the legs?

    1 reply

    Thank you, his upper legs are adjustable capacitors with a ceramic base.

    I guess there's a video, but for some reason all I can see is a white space.

    I hope it turns up soon, I'd like to see how to put this together.

    5 replies

    That's weird. That happened to me yesterday on mobile, but it works fine on my computer. Can you see it now? Feel free to ask about a specific part of the sculpture. I wrapped copper wire around the fuse arms and everything else was soldered together except for the 16Mhz crystal. I glued the crystal to the bulb socket.

    It may have been filters - it's fine now, through FireFox at home, but I was looking at work, through their filters.

    Do you have any suggestions as how I can improve this to make it feature-worthy?

    I'd like to see how you put it all together (the man, the circuitry into the box etc) - at the moment, we jump from a list of parts to a completed device.

    I added some more pictures and a schematic. I guess I should have taken more pictures along the way, but it's just soldered together. It's really simple.

    Thank you everybody who emailed me to let me know how its done.iv got it figured out ,all i can say is the instructable community rocks.thank you

    Thanx that is so kool i love it...just wondering how you hook the arms to the pins on the eprom and to what set of pins...thank you