| 4.servo | Pol Jara Rodriguez | 2023-05-24 10:23:25 | UNO | |
| 40 Relés MQTT | Pipo A X | 2019-05-23 16:52:51 | MEGA / 2560 | |
| 42 | Hug Zaguirre Stoica | 2023-03-23 19:49:08 | ESP32 STEAMakers | |
| 456 | Cat Pop | 2022-11-11 01:38:33 | UNO | |
| 4A_Clauida_Robert_Anri | Carme Alemany | 2023-05-27 19:26:15 | UNO | |
| 4A_Ilia_Marina_Gerard | Carme Alemany | 2023-05-27 19:17:20 | UNO | |
| 4A_Núria_Paula_Natàlia_Alvaro_Parking | Carme Alemany | 2023-05-27 18:13:29 | UNO | |
| 4A_VIDA SUBMARINA AinaAleixMerian | Merian Naya Ramirez | 2023-06-01 07:31:22 | UNO | |
| 4A_VIDA SUBMARINA AinaAleixMerian | Carme Alemany | 2023-06-05 18:48:44 | UNO | |
| 4A_VIDA SUBMARINA AinaAleixMerian | Carme Alemany | 2023-05-27 18:47:07 | UNO | |
| 4D-REG AUTOMÀTIC D'UN HORT- Jana i Adam | Carme Alemany | 2023-05-28 17:51:37 | UNO | |
| 4D_Xinhao_Laia_Aida_CONTENIDOR PATI | Carme Alemany | 2023-05-28 06:52:31 | UNO | |
| 4WD Robotrash - Controlado por Bluetooth | Facilitador01 Icr3a | 2020-02-17 15:06:50 | UNO | |
| 4WD Robotrash - Seguidor de linea | Facilitador01 Icr3a | 2020-02-17 14:55:17 | UNO | |
| 4WD self-driving car avoiding obstacles | Hongseok Kim | 2018-07-27 02:14:07 | UNO | |
| 4_led_kette_dimmen_1.1 (2) | Hans Wurst | 2018-03-09 12:41:58 | UNO | |
| 4_led_lauflichtgeschwindigkeit | Hans Wurst | 2018-03-09 13:00:21 | UNO | |
| 4a.- Semáforo ampliado | Ernesto J. Abad | 2019-06-14 08:53:29 | UNO | |
| 4b.- Semáforo ampliado con peatones | Ernesto J. Abad | 2019-06-14 08:54:06 | UNO | |
| 4bis .1 | Biel Gallego | 2022-10-24 08:55:47 | ESP32 STEAMakers + Imagina TdR STEAM | |
| 4bis.2 | Biel Gallego | 2022-10-26 08:30:31 | ESP32 STEAMakers + Imagina TdR STEAM | |
| 4c.- Semáforo con peatones mejorado | Ernesto J. Abad | 2019-06-14 08:54:42 | UNO | |
| 4to sec Luces Bluetooth :v | Yemira Fernanda Ayna Quispe | 2018-10-02 17:14:12 | UNO | |
| 4wd Robotrash - Ctrl ultrasonido | Facilitador01 Icr3a | 2020-02-19 19:01:38 | UNO | |
| 5 | Martina Fernández Novoa | 2023-03-29 08:39:20 | ESP32 STEAMakers + Imagina TdR STEAM | |