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u/skiermax

r/Renault r/AskElectronics r/PrintedCircuitBoard r/shittyaskelectronics
Image 1 — [Schematics review] PAM8006 audio amplifier
Image 2 — [Schematics review] PAM8006 audio amplifier
▲ 2 r/PrintedCircuitBoard

[Schematics review] PAM8006 audio amplifier

Hi, I've tried to make a copy of CJMCU-PAM8006 breakout board to test it and integrate it on my final board. Right now, I only need one channel for my mono speaker application. All of the Left channel side is unmounted and left channel power is not connected.

The board itself seems to work, but the sound coming out of the speaker is much weaker than on the board I bought.

On the original board, there is no PL (Power Limit) resistor, so it is on DMP on mine as well.

Can you spot any no no's on the schematics?

u/skiermax — 5 days ago
▲ 1 r/Renault

AdBlue default & DDT4ALL diagnostic

Hi,

I have 2019 Megane 4 1.5 blue DCI. As you can conclude from the title, I have an issue concerning urea antipollution system that I try to diagnose over DDT4ALL.

After a start, the dash showed a notification that in 800km, starting won't be possible and I need to fill the tank. No previous warning like 'fill the tank before 2400km/1200km' as usual, straight to 800km. So I filled, but after 100km the fault doesn't go away.

So far, I've seen an anomaly concerning the "Urea quality" that sits around 45%. Could anyone help me figure it out? Scan it's own car and share the screens of UREA ECU at default, working values?

Many thanks

reddit.com
u/skiermax — 1 month ago
▲ 1 r/AskElectronics

Is this design for a floating pin could work?

A bike motor controller pin 'MZ_3Speed' has 3 possible states, HIGH, LOW, and High-Z.

Usually people tie up a 3-state switch to that but I want to make an electronic version of it.

I'm mainly worried about the upper P-MOS. The datasheet states that Vgs = -2V. As my ESP GPIO pins can go up to 3.3V max, would that mean that I will be able to turn it ON, but unable to switch OFF?

PS. I know there is a forbidden state that would fry my circuit.

u/skiermax — 3 months ago
▲ 9 r/AskElectronics

Would You have an idea what IC is hidden behind this sort of cables?

Hi there!

I try to make a PCB that allows my phone to be charged AND manage an USB memory stick at the same time.

I bought a similar device. After openning the USB-C power side, I discovered some ICs impossible to find on usual canals.

I've found 3 main chips:

  • CY105 U6PT6.00
  • double: 4407A GA2R8V
  • NABbx

Another redditor had a similar question under this post, having a bit more details about his board.

Would you have any informations about this (or similar) circuits that allows to power the device and set a host behaviour?

u/skiermax — 3 months ago