Incredible Discrete MOSFET Rover Has Maximum Blink | Hackaday

What do you get by gluing 1738 MOSFETs together? If your answer is "4-bit CPU", it will be completely correct. can be used as

As "CPU1738", it seems to be aimed at beginners in computer theory, and its construction instructions explain how to construct a CPU by combining a single MOSFET into a logic gate.

Although its SMD format is definitely more compact than pure through-hole components, the use of countless small PCBs on top of a larger PCB can result in a considerable package. The CPU was assembled piece by piece, and then the assembly continued, adding sensors, motors and wheels. Finally, a robot appeared, although it looked a little unstable.

Please check the linked video after the break, but before you start playing, please pay attention

The price of only the CPU block (approximately $500). On the other hand, in addition to 1738 MOSFETs, there are 1070 LEDs, so you can buy them in the blink of an eye.

The best Christmas tree ever.

It can be further developed into an automatic toilet seat. When it feels occupied and automatically shuts down after use, the cute blinking light will light up.

Apart from outstanding performance, I have nothing to say, I pay tribute to the direction of the creator. well done.

Need some plexiglass panels (increase stiffness and reflect additional lights in the structure to make it flash more) and cup holders ("Take me a beer/soda"), otherwise it would be great, I hope I can afford it Start/prove it is reasonable $500

Unfortunately, $500 plus a cup holder will only give you a coffee table with potential. That does not include the "rover" part, you must program the "blink". :)

"Although its SMD format is definitely more compact than pure through-hole parts,"

It seems that the PCB can easily accommodate 4 TO92 FETs. Laying them flat will only increase the height by a few millimeters.

A few years ago, I took a cheap NPN transistor spool and dreamed of using it to make a discrete ECL computer. Then life gets stuck. So, I pay tribute to this design. well done!

It seems that I am not the only one.

Would you like to share the experiment?

I'm here

And others

Far away from you. I started this project in university more than 20 years ago, but I didn't take good notes. This is an extension of a project I did for a class in which I investigated the switching speed of various 74 series logic series (3 and 5 inverter ring oscillators). The most difficult part of the project was ultimately the procurement of all (even at the time) obscure 74 series: L, LS, H, C, L, S, AS, ALC, HC, HCT, etc. I was thinking about expanding it to different ECL series – Motorola just expanded their ECLips series of ultra-fast discrete ECL. I am curious what can be done with discrete parts.

As you seem to have discovered, RTL and DTL have many shortcomings, and they are not easier to use than ECL (and you can choose that each signal is a differential signal for free inversion). But the school blocked it. Later, when money was no longer a big issue, I picked up a triode (a household transistor labeled 2n4401), but by then, work and other time demands emerged. Then it was a family... I just remember the project I encountered when cleaning the office from time to time, when I came across transistor spools.

You should definitely record it, and/or join our TTLers group :-)

When others share their similar tickling, it will reduce loneliness;-)

They started selling again! 1000 2n4401 or similar products, price $6. The urge to buy more must be controlled....

Oops, I pressed the wrong button / o \

Please record the documents before buying!

It is easy to purchase parts that tend to accumulate dust in the drawer.

What will you do with 1K transistors? Even for a simple processor, this is quite short. I think you need at least 3K or 4K to get remote useful functions.

If there are less than 3K available, I do not consider buying parts, it is a full reel, preferably 2 or 3! Therefore, if you want to get any feasible results, you have already spent $60 even if you don’t understand your design.

If you still want to move on, please take a look at Tim's latest work :-)

Replace the LED with 3 diodes in series, and that's it.

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