#Smart Bench Power Supply

1 messages · Page 1 of 1 (latest)

neon eagle
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I'm working a smart bench power supply controllable via wifi, voice or normal buttons, it has a rechargeable battery to keep uC running and 100W max input using USB power delivery.

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exotic delta
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That is a ginormous IC, what's the reason for choosing it?

neon eagle
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it's actually pretty small

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board is just 10cm x 10cm

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i needed it for voice rec and sensor + memory stuff, it's an stm32h747bit6

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the original plan was adding a camera too

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and i still plan on using it later

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that's why i chose it in the first place

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for image recognition

exotic delta
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it is fairly huge

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but yeah, makes sense

neon eagle
exotic delta
neon eagle
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Oh lol

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That has 208 pins

exotic delta
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is there a reason you're not going to a SOC?

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or SOM

neon eagle
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I just wanted to make something myself

exotic delta
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Perfect!

neon eagle
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Progress

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sick ingot
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looking sick! how do you round the edges of your board ?

neon eagle
sick ingot
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oh I see, it's not just a square you rounded using premade funtions

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thanks!

neon eagle
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Np

honest swan
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how many of the pins are you using on that? That's a dizzying amount of QFP pins

neon eagle
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208

neon eagle
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Waveform generator and memory added

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only audio is left

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then i have to connect everything to the stm32

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luckily bottom laayer is empty

velvet steeple
neon eagle
sand zephyr
neon eagle
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when i am home i can send the kicad project too

sand zephyr
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Ohh that would be great!

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What are the features of this PCB other than that wifi controlled?

neon eagle
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and more

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don't remember everything

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those 2 buck boost can output some amps (with configurable limiters)

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and it has a signal generator (sine, triangle and square)

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and it has ucpd

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ok, we have a problem, the buck boost is not available anymore, you will have to find another one

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just import the file to a cart

sand zephyr
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Looking forward to collaborate on this one!

neon eagle
neon eagle
neon eagle
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the project files

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stm32 cube included

drifting dome
neon eagle
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was planning to use some ML in it

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i needed the power

neon eagle
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the pcb was not done

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it was barely started

tight mason
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Honestly with that many pins, external memory and an LCD I'd just move to an FPGA and have the esp32 drive it?

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Although if you want a USB 2.0 device then you'd have a limited selection of esp32 options

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And I imagine you might not want to write hdl

muted agate
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The only problem i can think of with voice is something like hearing 14 as 40 and sizzling whatever is connected

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Or 19 as 90

neon eagle
muted agate
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CPLDs are cheap

muted agate
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But it won't reduce the pins needed by much

deep bobcat
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Did it work

neon eagle
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The pcb wasn't even completed

craggy trout
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I’m used to working with low power pcbs but I don’t see much resources on high power design

neon eagle
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rn i am working on a pcb with stm32mp257 IC with PCIe

drifting dome
neon eagle
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Depends

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some peripherals are

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some are not

drifting dome
tight mason
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The peripherals are either going to have Linux drivers (still being upstreamed) or live on the realtime M33 core

neon eagle
neon eagle
drifting dome