Storm tracker
solderable/storm-tracker-hardware
Open-source-ready Storm Tracker hardware design, documentation, BOM, and manufacturing package

Ouvrir potfleur.kicadpro. Le schéma racine potfleur.kicadsch réunit les feuilles RAK3172, capteur SHT40 et alimentation BQ25570.
Pot fleur is an open-source printed circuit board by MaxBarbe, from the MaxBarbe/SmartPot_RAK3172 repository on GitHub. It is a 4-layer board of 30 × 60 mm with 50 parts on 45 nets, routed with 749 tracks and 75 vias.
It is built around the SHT40-AD1B-R2 and B3U-1000P. Its parts include 9 connectors, 7 capacitors, 5 resistors, 3 ICs and 2 switches.
Ouvrir pot_fleur.kicad_pro. Le schéma racine pot_fleur.kicad_sch réunit les feuilles RAK3172, capteur SHT40 et alimentation BQ25570.
Carte préliminaire de 30 × 60 mm sur quatre couches, 48 empreintes présentes et 12 non montées, broches sur les côtés. C22 est volontairement non monté. R6/C6/L1 sont en 0603 ; ce boîtier est une contrainte du projet.
L’antenne CST finale remplace maintenant l’ancienne antenne TI sur A1. La géométrie a été légèrement ajustée pour conserver le PCB 30 × 60 mm, et un raccord RF physique a été ajouté. Voir la fiche d’intégration et l’aperçu. Une resimulation est nécessaire ; les captures CST originales ne valident pas encore cette adaptation.
Les valeurs ROK1=4,12 MΩ, ROK2=7,87 MΩ et ROK3=1,02 MΩ donnent les seuils nominaux étudiés d'environ 3,52 / 3,82 V ; le réseau de surtension reste ROV1=7,15 MΩ et ROV2=8,66 MΩ. Ces valeurs ne remplacent pas une vérification des tolérances et du fonctionnement réel.
Les bibliothèques d'empreintes et de symboles locales sont déclarées dans fp-lib-table et sym-lib-table. Les chemins utilisent ${KIPRJMOD} ; conserver les dossiers footprints, symbols et 3dmodels avec le projet. Les ressources pédagogiques ont été déplacées dans references/EDU_RAK_2026.
Les rapports sans erreur ne valident pas la performance RF ou l'alimentation. Le placement de CREF1, CBYP1, CIN2 et LBUCK1 doit être revu autour de U3. L'empilage quatre couches reste à confirmer avec le fabricant.
Carte assemblée STEP, carte nue STEP, vues 3D et références des modèles. Les modèles manquants de RAK3172, BQ25570, SHT40 et LBOOST1 ont été complétés sans modification du routage. Les modèles DNP sont exclus du STEP assemblé.
| Qty | Value | Footprint | References |
|---|---|---|---|
| 7 | R | Resistor_SMD:R_0603_1608Metric | ROK1B1, ROK2B1, ROK3B1, ROUT1B1, ROUT2B1, ROV1B1, ROV2B1 |
| 5 | 100nF | Capacitor_SMD:C_0603_1608Metric | C3, C4, C5, CBYP1, CIN1 |
| 4 | Conn_01x04_Pin | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J1, J2, J4, J7 |
| 2 | 0 | Resistor_SMD:R_0603_1608Metric | R4, R6 |
| 2 | 22uF | Capacitor_SMD:C_0603_1608Metric | COUT1, CSTOR1 |
| 2 | 4,7k | Resistor_SMD:R_0603_1608Metric | R8, R9 |
| 2 | B3U-1000P | Button_Switch_SMD:SW_SPST_B3U-1000P | SW1, SW2 |
| 2 | Conn_01x02_Pin | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J5, J6 |
| 2 | MountingHole_3mm | MountingHole_3mm | H1, H2 |
| 1 | 1.02M | Resistor_SMD:R_0603_1608Metric | ROK3 |
| 1 | 100k | Resistor_SMD:R_0603_1608Metric | R3 |
| 1 | 100uF | Capacitor_SMD:C_0603_1608Metric | C22 |
| 1 | 10nF | Capacitor_SMD:C_0603_1608Metric | CREF1 |
| 1 | 10uH | Inductor_SMD:L_1008_2520Metric | LBUCK1 |
| 1 | 22uH | LBOOST:IND_LPS4018-223MRC | LBOOST1 |
| 1 | 4.12M | Resistor_SMD:R_0603_1608Metric | ROK1 |
| 1 | 4.64M | Resistor_SMD:R_0603_1608Metric | ROUT1 |
| 1 | 4.7uF | Capacitor_SMD:C_0603_1608Metric | CIN2 |
| 1 | 7.15M | Resistor_SMD:R_0603_1608Metric | ROV1 |
| 1 | 7.87M | Resistor_SMD:R_0603_1608Metric | ROK2 |
| 1 | 8.25M | Resistor_SMD:R_0603_1608Metric | ROUT2 |
| 1 | 8.66M | Resistor_SMD:R_0603_1608Metric | ROV2 |
| 1 | BQ25570 | Package_DFN_QFN:QFN-20-1EP_3.5x3.5mm_P0.5mm_EP2x2mm | U3 |
| 1 | Conn_01x02_Socket | Connector_PinSocket_2.54mm:PinSocket_1x02_P2.54mm_Vertical | J19 |
| 1 | Conn_Coaxial_Small | Connector_Coaxial:U.FL_Hirose_U.FL-R-SMT-1_Vertical | J3 |
| 1 | DNP | Inductor_SMD:L_0603_1608Metric | L1 |
| 1 | DNP | Capacitor_SMD:C_0603_1608Metric | C6 |
| 1 | P-MFC | TerminalBlock_Phoenix:TerminalBlock_Phoenix_MKDS-3-2-5.08_1x02_P5.08mm_Horizontal | J10 |
| 1 | PCB_868MHz_CST_IFA | SmartPot_RF:CST_IFA_868MHz_SmartPot | A1 |
| 1 | RAK3172-xx-8-SM-xI | RF_Module:RAK3172 | U1 |
| 1 | SHT40-AD1B-R2 | SHT40:SHT4X | U4 |
solderable/storm-tracker-hardware
Open-source-ready Storm Tracker hardware design, documentation, BOM, and manufacturing package


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4-layer STM32F407 mixed-signal PCB design featuring I2C/I2S/USB interfaces, SGP40 & SHT40 sensors, power plane splits, and star grounding for noise isolation.
It measures 30 × 60 mm and has 4 copper layers, 0.8 mm thick.
50 parts, built around the SHT40-AD1B-R2 and B3U-1000P. 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 MaxBarbe/SmartPot_RAK3172 repository on GitHub, at the commit this page was made from: the board is old/pot_fleur/pot_fleur.kicad_pcb and its schematic old/pot_fleur/BQ25570.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 MaxBarbe before reusing the design.