# Esp32-c3-wroom-1 **URL:** \ **Category:** parts help\ **Created:** [March 20, 2026, 2:53pm UTC](https://forum.fritzing.org/t/esp32-c3-wroom-1/33923 "2026-03-20T14:53:46Z")\ **Posts on this page:** 13\ **Page:** 1
**Author:** ![george1255](https://forum.fritzing.org/letter_avatar_proxy/v4/letter/g/d6d6ee/32.png) [@george1255](https://forum.fritzing.org/u/george1255)\ **Post date:** [March 20, 2026, 2:53pm UTC](https://forum.fritzing.org/t/esp32-c3-wroom-1/33923/1 "2026-03-20T14:53:46Z")
**Name of the part​❗** ESP32-C3-WROOM-02 / ESP32-C3-WROOM-02U * * * **Your previous work, similar parts** I searched for existing ESP32-C3 modules in the Fritzing parts library but did not find a dedicated part for the ESP32-C3-WROOM-02 or ESP32-C3-WROOM-02U module. There are some ESP32 modules available (like ESP32-WROOM-32), but the pinout and physical layout are different. * * * **Top view​❗** _(Insert image here – top view of the module showing pin layout and antenna area)_ Example description of the image: Top view of the ESP32-C3-WROOM-02 module showing the PCB antenna (or u.FL connector in the 02U version), shield, and castellated pins. * * * **Datasheet​❗** [https://www.mouser.com/catalog/specsheets/Espressif%20Systems\_09072021\_ESP32-C3-WROOM-02U-N4.pdf](https://www.mouser.com/catalog/specsheets/Espressif%20Systems_09072021_ESP32-C3-WROOM-02U-N4.pdf) * * * **Footprint** SMD module with castellated pads (18 pins total) * * * **Type** Breakout board, sub assembly, plug in module (A) Antenna (AE) Battery (BT) Capacitor (C) Diode (D) Display (DS) Fuse (F) Hardware , mounting screws, etc. (H) Jack, fixed part of a connector pair, header (J) Relay (K) Inductor, Coil, Ferrite bead (L) Loudspeaker, Buzzer (LS) Motor (M) Microphone (MK) Plug, moveable part of a connector pair (P) Transistor (Q) Resistor (R) Thermistor (RT) Varistor (RV) Switch (S) Transformer (T) Integrated Circuit (IC) Crystal, Oscillator (Y) Zener diode (Z) Other ---
**Author:** ![Harald\_Rau](https://forum.fritzing.org/user_avatar/forum.fritzing.org/harald_rau/32/21072_2.png) [@Harald\_Rau](https://forum.fritzing.org/u/Harald_Rau)\ **Post date:** [March 20, 2026, 4:07pm UTC](https://forum.fritzing.org/t/esp32-c3-wroom-1/33923/2 "2026-03-20T16:07:25Z")
Hello, Is there any part in Fritzing with these castellated pads? I think I’d fail at that. Regards, Harald! ---
**Author:** ![Harald\_Rau](https://forum.fritzing.org/user_avatar/forum.fritzing.org/harald_rau/32/21072_2.png) [@Harald\_Rau](https://forum.fritzing.org/u/Harald_Rau)\ **Post date:** [March 20, 2026, 4:24pm UTC](https://forum.fritzing.org/t/esp32-c3-wroom-1/33923/3 "2026-03-20T16:24:21Z")
I found something here. Could this component be adapted to the ESP32-C3? [ESP32-S3-WROOM-1.fzpz](https://forum.fritzing.org/uploads/short-url/wkir6PiWTIjHodSRUpQszWScl25.fzpz) (43.9 KB) Regards, Harald! ---
**Author:** ![george1255](https://forum.fritzing.org/letter_avatar_proxy/v4/letter/g/d6d6ee/32.png) [@george1255](https://forum.fritzing.org/u/george1255)\ **Post date:** [March 20, 2026, 5:03pm UTC](https://forum.fritzing.org/t/esp32-c3-wroom-1/33923/4 "2026-03-20T17:03:58Z")
[https://www.mouser.com/catalog/specsheets/Espressif%20Systems\_09072021\_ESP32-C3-WROOM-02U-N4.pdf](https://www.mouser.com/catalog/specsheets/Espressif%20Systems_09072021_ESP32-C3-WROOM-02U-N4.pdf) ---
**Author:** ![Harald\_Rau](https://forum.fritzing.org/user_avatar/forum.fritzing.org/harald_rau/32/21072_2.png) [@Harald\_Rau](https://forum.fritzing.org/u/Harald_Rau)\ **Post date:** [March 20, 2026, 5:52pm UTC](https://forum.fritzing.org/t/esp32-c3-wroom-1/33923/5 "2026-03-20T17:52:25Z")
Yes, I have that exact datasheet as well. I’ve already tweaked the file I sent a bit. I think we can handle it. ![svg.breadboard.ESP32-C3-WROOM-1_breadboard](https://forum.fritzing.org/uploads/default/original/3X/8/2/8247e1c391a3b961f5280274cc32c5d9cab0013d.svg) There are also still 2 pins too many! I’ll do the other files over the weekend. Regards, Harald ---
**Author:** ![Harald\_Rau](https://forum.fritzing.org/user_avatar/forum.fritzing.org/harald_rau/32/21072_2.png) [@Harald\_Rau](https://forum.fritzing.org/u/Harald_Rau)\ **Post date:** [March 21, 2026, 6:47pm UTC](https://forum.fritzing.org/t/esp32-c3-wroom-1/33923/6 "2026-03-21T18:47:34Z")
Hello, Could someone please check the two files? ![svg.breadboard.ESP32-C3-WROOM-1_breadboard](https://forum.fritzing.org/uploads/default/original/3X/f/1/f10a6e8a5820920dca7493b1c45bfec20b8f751b.svg) ![svg.pcb.ESP32-S3-WROOM-1_optimiert_pcb](https://forum.fritzing.org/uploads/default/original/3X/f/2/f29a77cfd2eddc757917da638bb738a194bb8b98.svg) The dimensions of the PCB view were a bit tricky. The datasheet is further up in the post. I’ll build the Fritzing part from it tomorrow. Regards, Harald! ---
**Author:** ![Harald\_Rau](https://forum.fritzing.org/user_avatar/forum.fritzing.org/harald_rau/32/21072_2.png) [@Harald\_Rau](https://forum.fritzing.org/u/Harald_Rau)\ **Post date:** [March 22, 2026, 8:43am UTC](https://forum.fritzing.org/t/esp32-c3-wroom-1/33923/7 "2026-03-22T08:43:08Z")
So, as I said, the PCB dimensions differ significantly from the ESP32 component. I’ve attached the PCB view. For the pads, I tried to implement the specifications from the datasheet. ![Abweichungen_Leiterplatte](https://forum.fritzing.org/uploads/default/original/3X/3/0/3085e7b895e9a184d635a6c36dc86bf360de428d.svg) Here is the component for review and improvement. [ESP32-C3-WROOM.fzpz](https://forum.fritzing.org/uploads/short-url/zgU03YFJInRtvxvsTbn8FR5UVmn.fzpz) (18,7 KB) Regards, Harald! ---
**Author:** ![tresjam](https://forum.fritzing.org/user_avatar/forum.fritzing.org/tresjam/32/24754_2.png) [@tresjam](https://forum.fritzing.org/u/tresjam)\ **Post date:** [March 25, 2026, 7:05am UTC](https://forum.fritzing.org/t/esp32-c3-wroom-1/33923/8 "2026-03-25T07:05:32Z")
I took a look at the part, it works so far. However, I noticed that the connectors make contact in the middle, not at the end. ![grafik](https://forum.fritzing.org/uploads/default/original/3X/9/7/97aaf4370152b6b2fd463aca2e402b9951af525b.png) ---
**Author:** ![Harald\_Rau](https://forum.fritzing.org/user_avatar/forum.fritzing.org/harald_rau/32/21072_2.png) [@Harald\_Rau](https://forum.fritzing.org/u/Harald_Rau)\ **Post date:** [March 25, 2026, 7:31am UTC](https://forum.fritzing.org/t/esp32-c3-wroom-1/33923/9 "2026-03-25T07:31:54Z")
Ah, you can actually do that in the editor, I’m not sure if I did it. If necessary, I’ll have to edit the XML file - whether that will work, I can’t say. You can try it yourself in the parts editor. The connections need to be set to O (East) and W (West). Regards, Harald! ---
**Author:** ![Harald\_Rau](https://forum.fritzing.org/user_avatar/forum.fritzing.org/harald_rau/32/21072_2.png) [@Harald\_Rau](https://forum.fritzing.org/u/Harald_Rau)\ **Post date:** [March 25, 2026, 7:47am UTC](https://forum.fritzing.org/t/esp32-c3-wroom-1/33923/10 "2026-03-25T07:47:04Z")
Yes, you’re right. I must have forgotten that. Here is the updated version with the connectors at the end of the PINs. [ESP32-C3-WROOM.fzpz](https://forum.fritzing.org/uploads/short-url/uMLm4nqSnc6ZOjCRXQR3hLlMMk9.fzpz) (18.9 KB) Regards, Harald! ---
**Author:** ![tresjam](https://forum.fritzing.org/user_avatar/forum.fritzing.org/tresjam/32/24754_2.png) [@tresjam](https://forum.fritzing.org/u/tresjam)\ **Post date:** [March 25, 2026, 4:22pm UTC](https://forum.fritzing.org/t/esp32-c3-wroom-1/33923/11 "2026-03-25T16:22:37Z")
Just checked again, it still looks the same. I then tried to fix it via Inkscape, unfortunately that didn’t work. With my PGA2311, which I published at the beginning of 2025, it worked without any problems. Maybe it’s due to my Inkscape version… ---
**Author:** ![Harald\_Rau](https://forum.fritzing.org/user_avatar/forum.fritzing.org/harald_rau/32/21072_2.png) [@Harald\_Rau](https://forum.fritzing.org/u/Harald_Rau)\ **Post date:** [March 25, 2026, 6:51pm UTC](https://forum.fritzing.org/t/esp32-c3-wroom-1/33923/12 "2026-03-25T18:51:14Z")
That’s not so nice, could it be that this happens during importing. I changed the alignment of the PINs in the component editor. I went to the component and right-clicked on Edit Component… ![Bildschirmfoto vom 2026-03-25 19-52-53](https://forum.fritzing.org/uploads/default/original/3X/6/3/633568ac5f24b620b81d50aebf5fb07879bbd1e3.png) Then clicked on each PIN and set the terminal point, either East or West. After that File/Save. I did not use Inkscape for this. It worked for me then. ![Bildschirmfoto vom 2026-03-25 19-50-09](https://forum.fritzing.org/uploads/default/original/3X/a/6/a609b8898cff2848a2722719fa842542961493f5.png) ---
**Author:** ![tresjam](https://forum.fritzing.org/user_avatar/forum.fritzing.org/tresjam/32/24754_2.png) [@tresjam](https://forum.fritzing.org/u/tresjam)\ **Post date:** [March 26, 2026, 10:43am UTC](https://forum.fritzing.org/t/esp32-c3-wroom-1/33923/13 "2026-03-26T10:43:16Z")
No idea why, but in my last attempts the error was still there. Maybe the file was still in the browser cache, so I kept downloading and importing the first version. Today it works without any problems…