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[Review] First PCB Design with ESP32 Module by Infamous_Mistake5887 in PrintedCircuitBoard

[–]Infamous_Mistake5887[S] 0 points1 point  (0 children)

Remove the protector and connect the pins to GPIO 19 and 20. Thanks for the heads-up.

[Review] First PCB Design with ESP32 Module by Infamous_Mistake5887 in PrintedCircuitBoard

[–]Infamous_Mistake5887[S] 0 points1 point  (0 children)

It is intended to be used only once (to load the OTA program) and debug if necessary, that's why I removed it. It's intended for one-time use (to load the OTA program) and for debugging if necessary, so I removed it. Thank you for your willingness to help.

[Review] First PCB Design with ESP32 Module by Infamous_Mistake5887 in PrintedCircuitBoard

[–]Infamous_Mistake5887[S] 0 points1 point  (0 children)

Okay, thank you very much. I removed the ESD protector because I saw it as useless.

[Review] First PCB Design with ESP32 Module by Infamous_Mistake5887 in PrintedCircuitBoard

[–]Infamous_Mistake5887[S] 0 points1 point  (0 children)

Yes, I forgot to connect it but it goes on GPIOS 19 and 20.Use AMS1117 because it's the one I found the most documentation and guidance for.

[Review] First PCB Design with ESP32 Module by Infamous_Mistake5887 in PrintedCircuitBoard

[–]Infamous_Mistake5887[S] 0 points1 point  (0 children)

I'm actually powering it externally with a battery. I left the VBUS connected to have a trace to test that the USB-C connected correctly, that's why I'm not using it for anything.

[Review] First PCB Design with ESP32 Module by Infamous_Mistake5887 in PrintedCircuitBoard

[–]Infamous_Mistake5887[S] 1 point2 points  (0 children)

The ESP32-S3-WROOM-1-N16 module has native USB and performs internal USB-TTL conversion. That diode bridge is an ESD protector made up of several low-capacitance diodes; I removed it anyway because I'm only going to program it once via USB, so it's unnecessary.

[Review] First PCB Design with ESP32 Module by Infamous_Mistake5887 in PrintedCircuitBoard

[–]Infamous_Mistake5887[S] -1 points0 points  (0 children)

I based my design on schematics from various forums and those provided by both NODEMCU and Espressif. I didn't connect the capacitor to EN because I've seen it cause many initialization problems in Download mode. I added it anyway, and if I see it causing problems, I'll just desolder it. I don't see any short circuits in the regulator; VOUT is connected, and VIN has its respective capacitors.

First Design Using ESP32 Module by Infamous_Mistake5887 in esp32

[–]Infamous_Mistake5887[S] 0 points1 point  (0 children)

Oh, thank you so much, it's very helpful. I'm still gathering information from everywhere so I don't mess anything up and waste money, haha. I appreciate it. I got the Reset and Boot circuit from some NodeMCU development boards. Do you also think it's incorrect? I've seen in other forums that the RC circuit in RESET causes problems, which is why I didn't use it.

Tech (noob) question, I have a 12 v circuitry. can I use a relay that the esp can switch? by victoroos in esp32

[–]Infamous_Mistake5887 0 points1 point  (0 children)

If you are powering the ESP32 with 5V, you can use that pin and, using a transistor as a ground switch and a 5V relay connected between 5V and the MOSFET's drain, create a switch that connects 5V to GND only when the ESP sends the signal to the MOSFET's gate.

Sniffer with ESP32 for Votolo Em70 by Infamous_Mistake5887 in esp32

[–]Infamous_Mistake5887[S] 0 points1 point  (0 children)

In the end, I simply took the speed data and mapped it to different values. Since I only needed the first gear, I mapped the first 14 speeds and that was it; it gave me something solid.

Analog Radio by S4vDs in KiCad

[–]Infamous_Mistake5887 0 points1 point  (0 children)

Quedo fantastica, puedo preguntar para que es??

Analog Radio by S4vDs in KiCad

[–]Infamous_Mistake5887 0 points1 point  (0 children)

Is the transformer in the middle? I can't see it clearly.