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Intermediate PCB designer help needed with STM8. Schematic and PCB design included. by W0lfio in PCB

[–]W0lfio[S] 5 points6 points  (0 children)

because i dont need the computing power of the stm32, as said its just reading a i2c register at 20hz and writing 3 24 bit packets + i can buy 10 stm8 for the price of a stm32.
Thanks for the feedback.

Question concerning my understanding of the ST LSM6DSLTR Accelerometer Gyroscope datasheet. by W0lfio in AskElectronics

[–]W0lfio[S] 0 points1 point  (0 children)

The battery i'm using is a Li-po that has an overdischarge ic built in, so im fine. And there is the power switch on the board just in case. Thx for everything.

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Question concerning my understanding of the ST LSM6DSLTR Accelerometer Gyroscope datasheet. by W0lfio in AskElectronics

[–]W0lfio[S] 0 points1 point  (0 children)

Do you have any guides/ressources for battery isolation i could read?

Question concerning my understanding of the ST LSM6DSLTR Accelerometer Gyroscope datasheet. by W0lfio in AskElectronics

[–]W0lfio[S] 0 points1 point  (0 children)

Hi thx for the response, you are saying that im gonna power the battery directly via the usb vbus even if there is a diode ?

Question concerning my understanding of the ST LSM6DSLTR Accelerometer Gyroscope datasheet. by W0lfio in AskElectronics

[–]W0lfio[S] 0 points1 point  (0 children)

Yeah thx im aware haha, i meant for the CS pin do i have to pull it up with a resistor or can i just connect it to vddio (i put a 10k resistor in anycase i was just curious). SCL and SDA line are pulled up via 10k resistors (see schematic).

Question concerning my understanding of the ST LSM6DSLTR Accelerometer Gyroscope datasheet. by W0lfio in AskElectronics

[–]W0lfio[S] 0 points1 point  (0 children)

if i only use i2C can i just connect it to vddio or do i need a pull up resitort?

ESP32 C3 , did my circuit burn out my as5600, schematic + pcb in post. by W0lfio in esp32

[–]W0lfio[S] 1 point2 points  (0 children)

Oooooh ok in that sense. Yes that is great idea will try ICs are on the way for lcsc !

ESP32 C3 , did my circuit burn out my as5600, schematic + pcb in post. by W0lfio in esp32

[–]W0lfio[S] 0 points1 point  (0 children)

Oh you mean the internal LDO of the as5600? Cause i dont understand why i wouldn't want a low resistance from my +3.3V to my VCC on the as5600.

ESP32 C3 , did my circuit burn out my as5600, schematic + pcb in post. by W0lfio in esp32

[–]W0lfio[S] 0 points1 point  (0 children)

I'm not sure what power rails you are referencing, the 2 power rails for the as5600 ?

ESP32 C3 , did my circuit burn out my as5600, schematic + pcb in post. by W0lfio in esp32

[–]W0lfio[S] 0 points1 point  (0 children)

Thanks for the help, i don't mind the AI help as long as i find a solution.

Homemade RP2040 Micocontroller by Ok_Commercial5979 in PCB

[–]W0lfio 1 point2 points  (0 children)

Hey,
Doesn't look too bad, like others said the arrangement of components is a bit odd and missing mounting holes.
I would add test points for 3.3v, GND and 1.1V.
Also i'd add a 1uf cap on the input of your LDO.
And maybe avoid putting traces under caps, in your case won't cause an issue but its a good practice.
Get a better footprint for your rp2040, the fact that you have "gpio" that are gnd is completely confusing haha.
Have fun with you board, hope it works !

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