Happy New Year 2024 - what's your dream project this year ?

Happy 2024 - Anyone have a dream project for this year, or a project to take off the shelf and finish ?

My dream project is build an autonomous model car, i.e. a Donkey Car. I have the RC chassis. It started in 2021, RPi 3. A bit of prototyping in 2022 with a MOTOPLATE hat . 2023 replaced the RPi3 with an RPi4.

2024 I want to replace the RPi camera with a Nicla Vision. I wonder if an RP5 is in its future. Maybe this project gets an unexpected upgrade for a Road Test with ROS2.

What's your dream ?

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Workshopshed over 1 year ago

Got an up coming house/workshop move so not expecting much time for projects this year
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BigG over 1 year ago

My dream project is taking an idea and making it a reality without having to learn through failure... case in point... my first failure of the year... and now I know all about p-channel mosfets...

And note to self... do not take up an old project between Christmas and New Year... your tummy is still full of Christmas turkey and the brain is not fully engaged. Boy oh boy...
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dang74 over 1 year ago in reply to BigG

If your voltage originates from pin 1 of the DC connector everything seems correct to me. Pull down resistor R2 ensures a negative VGS to turn Q2 on by default. R1 I assume is connected to a signal that turns off Q1 when a positive voltage is present. So I don't see the error... but maybe my mind is also still sleepy from holiday times.
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BigG over 1 year ago in reply to dang74

I have drain and source reversed. Also, source voltage can be greater than 5V, which is not good for most 3V3 MCU's driving the gate - I also forgot to add in a transistor for this purpose.
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dang74 over 1 year ago in reply to BigG

One more question. The USB connector pictured at the bottom of your schematic, is that the source of the 5V supply... or is it receiving 5V from elsewhere on your board?
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BigG over 1 year ago in reply to dang74

So the USB connector pictured at the bottom is receiving 5V, or if it's a USB-C connection, or say for a phone, it could be 9V or even higher.

For a bit of background, this was the original forum post I created a good while ago when I was seeking guidance about this little project of mine: For FET-sake, I keep switching and cannot find a suitable MOSFET (or BJT)
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dang74 over 1 year ago in reply to BigG

Okay, if it's supposed to receive then I see what you mean about source and drain being reversed. It's only occurred to me just now how plumbing can serve as a good analogy for P channel MOSFETs. Its source generally connects to a source and its drain connects to something down stream.
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kmikemoo over 1 year ago

I keep coming back to "One that I actually finish - not just get it good enough and then move on to something else." Something that is DONE.
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flyingbean over 1 year ago in reply to kmikemoo

Let's see how many members can follow the path from the beginning to the end and from being OK to being WELL DONE.
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Jan Cumps over 1 year ago in reply to flyingbean

The levels of project completion:

source: https://www.smokedbbqsource.com/steak-doneness-guide/
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