
Neuron
giant-axon/lu.i-neuron-pcb
Lu.i is an electronic neuron circuit mimicking and illustrating the basic dynamics of real, biological neurons. The printed circuit board (PCB) features a configurable, fully analog implementation of the leaky…

Scanner 3D low-cost sur Raspberry Pi : ligne laser, 2 caméras, plateau rotatif → maillage STL
Schema is an open-source printed circuit board by tom-berthoud, from the tom-berthoud/scanner3d-pmd repository on GitHub. It is a 2-layer board of 59.5 × 68 mm with 29 parts on 22 nets, routed with 85 tracks and 0 vias.
It is built around the LM2596S-5.0 and SI2302. Its parts include 12 connectors, 8 resistors, 4 transistors and 1 IC.
Un scanner 3D open source, compact et low-cost, conçu autour d'un Raspberry Pi.
Numérisez un objet, reconstruisez sa géométrie et exportez un modèle STL prêt à être réutilisé.
Voir le poster du projet · Lire le rapport complet
Scanner 3D transforme un objet posé sur un plateau rotatif en un modèle numérique exploitable grâce à une ligne laser, deux caméras et une chaîne logicielle complète — de la capture au maillage STL.
| Couche | Rôle |
|---|---|
| Acquisition | Capture synchronisée des deux caméras et commande du laser |
| Vision | Détection robuste de la ligne laser et réduction du bruit |
| Géométrie | Calibration caméra / laser, triangulation et fusion des deux vues |
| Reconstruction | Assemblage des profils en nuage de points puis maillage |
| Interface | Pilotage web, aperçu caméra, progression en temps réel et viewer 3D |
| Matériel | Raspberry Pi, moteur pas à pas, plateau rotatif, double caméra et écran local |
Le prototype répond aux objectifs du projet :
Les raccourcis de déploiement, la calibration, le lancement sur Raspberry Pi et les routes de l'API sont documentés dans README-technique.md.
Projet multidisciplinaire PMD — HEIG-VD, 2026
Tom Berthoud · Jason Weber · Luc Marchand · Tim Stamm · Hadrien Fuentes
Sous la responsabilité de Cédric Bornand.
Projet étudiant : le scanner est un prototype expérimental. Le laser doit rester éteint lorsque le boîtier est ouvert et ne doit jamais être regardé directement.
| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | 100 | Resistor_SMD:R_1206_3216Metric | R5, R6, R7, R8 |
| 4 | 100k | Resistor_SMD:R_1206_3216Metric | R1, R2, R3, R4 |
| 4 | SI2302 | Package_TO_SOT_SMD:SOT-23 | Q1, Q2, Q3, Q4 |
| 1 | Alim Rasberry | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | J3 |
| 1 | Alim driver | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J2 |
| 1 | Capteur porte | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J12 |
| 1 | GPIO Rasberry | Connector_PinHeader_2.54mm:PinHeader_1x10_P2.54mm_Vertical | J5 |
| 1 | IN | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J1 |
| 1 | LM2596 | Library_Perso:LM2596 module | U1 |
| 1 | Laser | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J11 |
| 1 | Pilotage driver | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J4 |
| 1 | Res1 | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J6 |
| 1 | Res2 | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J7 |
| 1 | Res3 | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J8 |
| 1 | Res4 | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J9 |
| 1 | Res5 | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J10 |
The 25 most common of 29 parts.
It measures 59.5 × 68 mm and has 2 copper layers, 1.6 mm thick.
29 parts, built around the LM2596S-5.0 and SI2302. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
From the tom-berthoud/scanner3d-pmd repository on GitHub, at the commit this page was made from: the board is docs/schema/schema.kicad_pcb and its schematic docs/schema/schema.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Its repository states no licence, so its author keeps all rights: ask tom-berthoud before reusing the design.

giant-axon/lu.i-neuron-pcb
Lu.i is an electronic neuron circuit mimicking and illustrating the basic dynamics of real, biological neurons. The printed circuit board (PCB) features a configurable, fully analog implementation of the leaky…

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