By the way, I was reading about the GPIO9 from: https://docs.espressif.com/projects/esptool/en/latest/esp32c3/advanced-topics/boot-mode-selection.html and https://www.espressif.com/sites/default/files/documentation/esp32-c3_datasheet_en.pdf And from what I understand, GPIO9 is not really really need...

ESP_Sprite wrote: ↑

Wed Feb 08, 2023 12:12 am

That should work fine

So final schamatic will be this. No problems, right?
Thank you for your time.

poor Q1 would have died almost immediately Yeah ahhaha poor Q1 :lol: . Okay, good that you posted that schematic because if you built this, poor Q1 would have died almost immediately. - Q1 is a BJT, and those need their base current limited. You want a series resistor of 10K or something between Vb...

Because the pi network (of which the footprint you would be putting in) has an inductor connecting the LNA pin of the ESP to the antenna; if you put nothing there, the antenna would be disconnected. Hence a 0R link if you don't need the pi network. Oh now I understand, i have done some research abo...

Uh, interesting. Fyi, the reason for that convention is readability: if all positive voltages point up and all grounds point down, it's trivial to see at a glance what gets pulled up and pulled down. As that's kinda important information, the easier it is to be able to see that, the better. I will ...

Ah, that's much more readable. Just a nitpick: some people don't like 'Christmas trees' in their schematic, in other words, if you want to make it really clean, you want all your ground symbols to point down and your power rail symbols to point up. No need to change it for readability in this schem...

Before I start, have you looked at the hardware design guidelines ? - Your schematic is a mess of wires. Suggest you use nets (=those labels with the same name, as a random example this uses a lot of them) to clear things up so we don't have to manually follow traces. I probably didn't catch all mi...

Before I start, have you looked at the hardware design guidelines ? - Your schematic is a mess of wires. Suggest you use nets (=those labels with the same name, as a random example this uses a lot of them) to clear things up so we don't have to manually follow traces. I probably didn't catch all mi...

I made this PCB taking inspiration from picoclick-c3t and 01Space ESP32-C3-0.42LCD. So I had bought the 01space esp32, but I only realize later that it doesn't have a Lipo battery charging module. So I wanted to create the same tab, but with the picoclick top up module. The circuit should be fine, c...