Mini ESP32 Wifi Module

3rd-party modules
#12

Hi Spildit,
in flipper zero I installed the release Eng1n33r:
flipper-z-f7-update-un4-0f9ea9

ESP32 Marauder is pre-installed.

In ESP32 chip I installed the firmware justcallmekoko:
esp32_marauder_v0_9_15_20220907_flipper

Did you see any error? I dont think that this issue depends by software but eletronics.

It is possibile invert the TX and RX pin by flipper zero software? Because the PCB has issue in pinout TX and RX, it is inverted .

Thanks for the support.

#13

The error most likely is related to the fact that the app on the Eng firmware you mentioned is made to work with the official wifi dev board with Marauder on it and NOT on the ESP mod that you did mention…

Try to buy flipper official debug wifi dev board and install the Marauder firmware on it, check if the app on the flipper do work with that.

#14

Ok, thanks, the problem is that WiFi Devboard is soldout, but i will wait that it is available.

Thanks for the support.

1 Like
#15

No problem. Let me know if you manage to make it work later with the dev board. Regards.

#16

Oh yeah it looks like the pins have been switched. I’ve designed a revised version of the board here: OSH Park ~

Changes:

  • Fixed the issue where TX/RX have been flipped
  • Added an LED connected to GPIO4 for ESP32
  • Added an on-off switch to enable/disable the wifi module (to save power)
  • Replaced programming header with a PCB jumper, so that in theory the ESP32 could be flashed using the Flipper USB-UART bridge by pressing something conductive against it while turning on the module
  • Added space for another bypass capacitor for better power stability

It hasn’t come in yet, so I don’t know if it’ll work

As for why the ESP Marauder doesn’t seem to be compatible, this module uses an ESP32-S instead of an ESP32-S2 (which is what the Wifi Dev Board) uses. I suspect that it should be possible to recompile ESP Marauder to work on the ESP32-S.

2 Likes
#17

Thanks for sharing the second version of the project.
Is it possible to draw the PCB for ESP32-S2 WROVER?
This should be exactly the chip installed on the original development board.
By doing this we should minimize the incompatibility problems.

#18

Here’s a variant that uses the ESP32-S2 WROVER OSH Park ~

1 Like
#19

Thanks antimatter15 !

#20

Hi, I tested the ESP32-S with the Marauder Firmware and work fine, i bought the pcb fixed. Thanks for all .

20221015_005533
20221015_0055334032×3024 2.98 MB

1 Like
#21

New version of the circuit board seems to work (using Marauder Mini firmware rather than the Flipper version)! My PR for adding pins 16/15 as DTR/RTS pins was landed recently which should make flashing/reprogramming much easier.

image
image1398×1144 94.6 KB

4 Likes
#22

I love the design and I’d like to create one myself.
besides the board and ESP-S2-module, what other parts do I need for this?

#23

Hey mate, looks awesome, is there any BOM list? I see in the bottom side some footprints c1 c3 R1 LED1, looks like a led, resistor, and… but le me knwo what we need :slight_smile:

Thanks and congrats by the initiative.

2 Likes
#24
  • D1: 2V LED
  • R1: 68 R
  • C1: 0.1 uF
  • C2: 10 uF

Probably :slight_smile:

3 Likes
#25

awesome thanks!

#26

According to another schema:
https://github.com/DrB0rk/Flipper-Zero-Boards/tree/main/Multi%20boards/Multi%20Board

1 Like
#27

Can you send me the products link of the working version, i would like to buy the components thx.

2 Likes
#28

Hello my friend, could you send me the links of what you used tu build the working esp 32, thx

1 Like
#29

Any update on this? Would love a parts list as well.

2 Likes
#30

Any chance you had a part number for the switch on the S2 version? I believe I have found everything else I need on Mouser, but I don’t think I can find a switch small enough.

Thankyou for your time.

#31

Hey can we all have a parts list please. TY!