# 18-Channel Firework Stepper ## Description Battery-powered 18-channel sequential pyrotechnic initiator controller triggered by qualified 18 V COBRA pulses, with three six-channel RJ45 outputs and lockout after channel 18. ## Project Details - **Owner:** nsteinseifer - **Created:** 8/8/2026 - **Last Updated:** 8/8/2026 - **Visibility:** Public ## Key Components ### D1 — [SSC54-E3/57T](https://www.flux.ai/adrian95/ssc54-e357t~hzn.md) - Part Type: Diode - License: https://creativecommons.org/licenses/by/4.0/ - Functional Group: Battery Input Protection - Manufacturer Part Number: SSC54-E3/57T - Manufacturer Name: Vishay General Semiconductor - Diodes Division - Datasheet URL: https://www.vishay.com/docs/88885/ssc53l.pdf **Pins:** - A [pin 2] - K [pin 1] ### D2 — [SM6T22A](https://www.flux.ai/jecstronic/sm6t22a~zro.md) - Manufacturer Name: STMicroelectronics - Manufacturer Part Number: SM6T22A - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://www.mouser.com/datasheet/2/389/sm6t100a-1916590.pdf - Functional Group: Battery Input Protection - Part Type: Diode **Pins:** - A [pin 2] - K [pin 1] ### D3 — [SM6T18A](https://www.flux.ai/jecstronic/sm6t18a~t3f.md) - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Diode - Manufacturer Part Number: SM6T18A - Datasheet URL: https://www.mouser.com/datasheet/2/389/sm6t100a-1916590.pdf - Functional Group: COBRA Isolated Input - Manufacturer Name: STMicroelectronics **Pins:** - A [pin 2] - K [pin 1] ### F1 — [0466005.NRHF](https://www.flux.ai/adrian95/0466005pnrhf~vbu.md) - Manufacturer Name: Littelfuse Inc. - Manufacturer Part Number: 0466005.NRHF - Functional Group: Battery Input Protection - Datasheet URL: https://www.littelfuse.com/assetdocs/fuse-466-datasheet?assetguid=dbe9bcd7-6072-4adf-bf5b-d33e52a6b90f - Current: 5A - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Protection - LCSC Part Number: C57525 **Pins:** - P1 [pin 1] - P2 [pin 2] ### J1 — [1-406541-5](https://www.flux.ai/silicon-yard/1-406541-5.md) - Manufacturer Part Number: 1-406541-5 - Role: NON-ETHERNET IGNITION OUTPUT - Part Type: Connectors - Symbol Style: parametric-v1 - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/user-uploaded/b364039c5dd5ffee38a4953a2b30fc38b7b02b809c7d0111678df07e6caa6691.pdf - Role Details: Pins 1-6 switched grounds CH1-CH6; pins 7-8 paralleled current-limited firing rail - Manufacturer Name: TE Connectivity - Mount: Through Hole - Functional Group: Ignition Outputs 1-6 **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] - 4 [pin 4] - 5 [pin 5] - 6 [pin 6] - 7 [pin 7] - 8 [pin 8] - MH1 [pin 9] - MH2 [pin 10] ### J10 — [1-406541-5](https://www.flux.ai/silicon-yard/1-406541-5.md) - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/user-uploaded/b364039c5dd5ffee38a4953a2b30fc38b7b02b809c7d0111678df07e6caa6691.pdf - Manufacturer Name: TE Connectivity - Functional Group: COBRA Isolated Input - Mount: Through Hole - Manufacturer Part Number: 1-406541-5 - Role: COBRA THRU / PASS-THROUGH - Part Type: Connectors - Role Details: Direct 1:1 pass-through from J8: pins 1-8 map to identical J8 pin numbers; no inversion or remapping; NON-ETHERNET - Symbol Style: parametric-v1 **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] - 4 [pin 4] - 5 [pin 5] - 6 [pin 6] - 7 [pin 7] - 8 [pin 8] - MH1 [pin 9] - MH2 [pin 10] ### J2 — [1-406541-5](https://www.flux.ai/silicon-yard/1-406541-5.md) - Mount: Through Hole - Role Details: Pins 1-6 switched grounds CH7-CH12; pins 7-8 paralleled current-limited firing rail - Manufacturer Name: TE Connectivity - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/user-uploaded/b364039c5dd5ffee38a4953a2b30fc38b7b02b809c7d0111678df07e6caa6691.pdf - Symbol Style: parametric-v1 - Part Type: Connectors - Functional Group: Ignition Outputs 7-12 - Role: NON-ETHERNET IGNITION OUTPUT - Manufacturer Part Number: 1-406541-5 **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] - 4 [pin 4] - 5 [pin 5] - 6 [pin 6] - 7 [pin 7] - 8 [pin 8] - MH1 [pin 9] - MH2 [pin 10] ### J3 — [1-406541-5](https://www.flux.ai/silicon-yard/1-406541-5.md) - Mount: Through Hole - Role: NON-ETHERNET IGNITION OUTPUT - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/user-uploaded/b364039c5dd5ffee38a4953a2b30fc38b7b02b809c7d0111678df07e6caa6691.pdf - Manufacturer Name: TE Connectivity - Part Type: Connectors - Symbol Style: parametric-v1 - Manufacturer Part Number: 1-406541-5 - Functional Group: Ignition Outputs 13-18 - Role Details: Pins 1-6 switched grounds CH13-CH18; pins 7-8 paralleled current-limited firing rail **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] - 4 [pin 4] - 5 [pin 5] - 6 [pin 6] - 7 [pin 7] - 8 [pin 8] - MH1 [pin 9] - MH2 [pin 10] ### J4 — [KF128-5.08-2P-AA](https://www.flux.ai/lcsc/kf128-5p08-2p-aa~0pbi.md) - Functional Group: Battery Input Protection - Connector Rows: 1 - JLCPCB Part Class: Extended Part - Operating Temperature: -40℃~+105℃ - Connector Pitch: 5.08mm - Product Info Url: https://lcsc.com/product-detail/New-Quadratic-Unclassified-Data_Cixi-Kefa-Elec-KF128-5-08-2P_C474952.html - Manufacturer Part Number: KF128-5.08-2P-AA - Connector Positions: 2 - Manufacturer Name: KEFA(科发) - LCSC Part Number: C474952 - Part Type: Screw terminal - Current Rating: 24A - Package or Case Code: CONN-TH_P5.08_KF128-5.08-2P - Connector Gender: Female - Connector Type: Screw terminal - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2408211511_Cixi-Kefa-Elec-KF128-5-08-2P-AA_C474952.pdf **Pins:** - 1 [pin 1] - 2 [pin 2] ### J6 — [1744037-2](https://www.flux.ai/lcsc/1744037-2~zuw.md) - JLCPCB Part Class: Extended Part - LCSC Part Number: C590674 - Functional Group: Hardware Fire Window - Package or Case Code: CONN-TH_2P-P5.08_1744037-2 - Part Type: Wire To Board / Wire To Wire Connector - Manufacturer Part Number: 1744037-2 - Manufacturer Name: TE Connectivity(美国泰科) **Pins:** - 1 [pin 1] - 2 [pin 2] ### J7 — [TSW-105-07-G-S](https://www.flux.ai/adrian95/tsw-105-07-g-s~klw.md) - Manufacturer Name: Samtec - Part Type: Connector - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet: https://suddendocs.samtec.com/productspecs/tsw-sxx.pdf - Functional Group: MCU and Safety Control - Manufacturer Part Number: TSW-105-07-G-S - Datasheet URL: https://suddendocs.samtec.com/catalog_english/tsw_th.pdf **Pins:** - 01 [pin 01] - 02 [pin 02] - 03 [pin 03] - 04 [pin 04] - 05 [pin 05] ### J8 — [1-406541-5](https://www.flux.ai/silicon-yard/1-406541-5.md) - Manufacturer Name: TE Connectivity - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/user-uploaded/b364039c5dd5ffee38a4953a2b30fc38b7b02b809c7d0111678df07e6caa6691.pdf - Mount: Through Hole - Role: COBRA Trigger Input - Functional Group: COBRA Isolated Input - Manufacturer Part Number: 1-406541-5 - Part Type: Connectors - Symbol Style: parametric-v1 - Role Details: Pins 7/8 = COBRA_IN_PLUS; pins 1-6 = selectable returns through J9; NON-ETHERNET **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] - 4 [pin 4] - 5 [pin 5] - 6 [pin 6] - 7 [pin 7] - 8 [pin 8] - MH1 [pin 9] - MH2 [pin 10] ### J9 — [Pin Header 02x06 2.54mm Vertical](https://www.flux.ai/adrian95/pin-header-02x06-254mm-vertical~jo9.md) - Functional Group: COBRA Isolated Input - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Connector - Role: Configuration Jumper - Role Details: Positions 1-6 pair J8 pins 1-6 to COBRA_IN_RETURN; FIT EXACTLY ONE JUMPER **Pins:** - Pin_1 [pin 1] - Pin_10 [pin 10] - Pin_11 [pin 11] - Pin_12 [pin 12] - Pin_2 [pin 2] - Pin_3 [pin 3] - Pin_4 [pin 4] - Pin_5 [pin 5] - Pin_6 [pin 6] - Pin_7 [pin 7] - Pin_8 [pin 8] - Pin_9 [pin 9] ### LED1 — [150060VS55040](https://www.flux.ai/adrian95/150060vs55040~c2q.md) - Datasheet URL: https://www.we-online.com/components/products/datasheet/150060VS55040.pdf - Part Type: LED - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Name: Würth Elektronik - Functional Group: Status Indicators - Manufacturer Part Number: 150060VS55040 **Pins:** - A [pin 2] - K [pin 1] ### LED2 — [150060AS75000](https://www.flux.ai/adrian95/150060as75000~eol.md) - License: https://creativecommons.org/licenses/by/4.0/ - Functional Group: Status Indicators - Manufacturer Part Number: 150060AS75000 - Manufacturer Name: Würth Elektronik - Forward Voltage: 2V - Part Type: LED - Datasheet URL: https://www.we-online.com/catalog/datasheet/150060AS75000.pdf **Pins:** - A [pin 2] - K [pin 1] ### LED3 — [LTST-C190KRKT](https://www.flux.ai/adrian95/ltst-c190krkt~3pw.md) - Manufacturer Part Number: LTST-C190KRKT - Manufacturer Name: Lite-On Inc. - Functional Group: Status Indicators - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: LED - Datasheet URL: https://optoelectronics.liteon.com/upload/download/DS-22-99-0151/LTST-C190KRKT.pdf **Pins:** - A [pin 2] - K [pin 1] ### Q1 — [AONS66614](https://www.flux.ai/silicon-yard/aons66614.md) - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/user-uploaded/f2e0549afe9256ed3eab48b978f4fa3ab878187ce47c6265f947c8a09c109045.pdf - Functional Group: Ignition Output Drivers - License: https://creativecommons.org/licenses/by/4.0/ - Symbol Style: parametric-v1 - Manufacturer Name: Alpha & Omega Semiconductors - Package or Case Code: 8-DFN (5x6) - Part Type: Transistor - Manufacturer Part Number: AONS66614 **Pins:** - D_1 [pin 5] - D_2 [pin 6] - D_3 [pin 7] - D_4 [pin 8] - D_5 [pin 9] - G [pin 4] - S_1 [pin 1] - S_2 [pin 2] - S_3 [pin 3] ### Q10 — [AONS66614](https://www.flux.ai/silicon-yard/aons66614.md) - Manufacturer Name: Alpha & Omega Semiconductors - Package or Case Code: 8-DFN (5x6) - Part Type: Transistor - License: https://creativecommons.org/licenses/by/4.0/ - Symbol Style: parametric-v1 - Manufacturer Part Number: AONS66614 - Functional Group: Ignition Output Drivers - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/user-uploaded/f2e0549afe9256ed3eab48b978f4fa3ab878187ce47c6265f947c8a09c109045.pdf **Pins:** - D_1 [pin 5] - D_2 [pin 6] - D_3 [pin 7] - D_4 [pin 8] - D_5 [pin 9] - G [pin 4] - S_1 [pin 1] - S_2 [pin 2] - S_3 [pin 3] ### Q11 — [AONS66614](https://www.flux.ai/silicon-yard/aons66614.md) - Manufacturer Part Number: AONS66614 - Part Type: Transistor - Package or Case Code: 8-DFN (5x6) - Manufacturer Name: Alpha & Omega Semiconductors - Symbol Style: parametric-v1 - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/user-uploaded/f2e0549afe9256ed3eab48b978f4fa3ab878187ce47c6265f947c8a09c109045.pdf - Functional Group: Ignition Output Drivers **Pins:** - D_1 [pin 5] - D_2 [pin 6] - D_3 [pin 7] - D_4 [pin 8] - D_5 [pin 9] - G [pin 4] - S_1 [pin 1] - S_2 [pin 2] - S_3 [pin 3] ### Q12 — [AONS66614](https://www.flux.ai/silicon-yard/aons66614.md) - Manufacturer Part Number: AONS66614 - License: https://creativecommons.org/licenses/by/4.0/ - Symbol Style: parametric-v1 - Package or Case Code: 8-DFN (5x6) - Manufacturer Name: Alpha & Omega Semiconductors - Part Type: Transistor - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/user-uploaded/f2e0549afe9256ed3eab48b978f4fa3ab878187ce47c6265f947c8a09c109045.pdf - Functional Group: Ignition Output Drivers **Pins:** - D_1 [pin 5] - D_2 [pin 6] - D_3 [pin 7] - D_4 [pin 8] - D_5 [pin 9] - G [pin 4] - S_1 [pin 1] - S_2 [pin 2] - S_3 [pin 3] ### Q13 — [AONS66614](https://www.flux.ai/silicon-yard/aons66614.md) - License: https://creativecommons.org/licenses/by/4.0/ - Symbol Style: parametric-v1 - Manufacturer Name: Alpha & Omega Semiconductors - Package or Case Code: 8-DFN (5x6) - Part Type: Transistor - Manufacturer Part Number: AONS66614 - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/user-uploaded/f2e0549afe9256ed3eab48b978f4fa3ab878187ce47c6265f947c8a09c109045.pdf - Functional Group: Ignition Output Drivers **Pins:** - D_1 [pin 5] - D_2 [pin 6] - D_3 [pin 7] - D_4 [pin 8] - D_5 [pin 9] - G [pin 4] - S_1 [pin 1] - S_2 [pin 2] - S_3 [pin 3] ### Q14 — [AONS66614](https://www.flux.ai/silicon-yard/aons66614.md) - Symbol Style: parametric-v1 - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Transistor - Package or Case Code: 8-DFN (5x6) - Manufacturer Name: Alpha & Omega Semiconductors - Functional Group: Ignition Output Drivers - Manufacturer Part Number: AONS66614 - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/user-uploaded/f2e0549afe9256ed3eab48b978f4fa3ab878187ce47c6265f947c8a09c109045.pdf **Pins:** - D_1 [pin 5] - D_2 [pin 6] - D_3 [pin 7] - D_4 [pin 8] - D_5 [pin 9] - G [pin 4] - S_1 [pin 1] - S_2 [pin 2] - S_3 [pin 3] ### Q15 — [AONS66614](https://www.flux.ai/silicon-yard/aons66614.md) - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/user-uploaded/f2e0549afe9256ed3eab48b978f4fa3ab878187ce47c6265f947c8a09c109045.pdf - Manufacturer Part Number: AONS66614 - Part Type: Transistor - Manufacturer Name: Alpha & Omega Semiconductors - Package or Case Code: 8-DFN (5x6) - Symbol Style: parametric-v1 - License: https://creativecommons.org/licenses/by/4.0/ - Functional Group: Ignition Output Drivers **Pins:** - D_1 [pin 5] - D_2 [pin 6] - D_3 [pin 7] - D_4 [pin 8] - D_5 [pin 9] - G [pin 4] - S_1 [pin 1] - S_2 [pin 2] - S_3 [pin 3] ### Q16 — [AONS66614](https://www.flux.ai/silicon-yard/aons66614.md) - Manufacturer Name: Alpha & Omega Semiconductors - Package or Case Code: 8-DFN (5x6) - Part Type: Transistor - License: https://creativecommons.org/licenses/by/4.0/ - Symbol Style: parametric-v1 - Manufacturer Part Number: AONS66614 - Functional Group: Ignition Output Drivers - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/user-uploaded/f2e0549afe9256ed3eab48b978f4fa3ab878187ce47c6265f947c8a09c109045.pdf **Pins:** - D_1 [pin 5] - D_2 [pin 6] - D_3 [pin 7] - D_4 [pin 8] - D_5 [pin 9] - G [pin 4] - S_1 [pin 1] - S_2 [pin 2] - S_3 [pin 3] ### Q17 — [AONS66614](https://www.flux.ai/silicon-yard/aons66614.md) - Manufacturer Part Number: AONS66614 - Part Type: Transistor - Manufacturer Name: Alpha & Omega Semiconductors - Package or Case Code: 8-DFN (5x6) - Symbol Style: parametric-v1 - License: https://creativecommons.org/licenses/by/4.0/ - Functional Group: Ignition Output Drivers - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/user-uploaded/f2e0549afe9256ed3eab48b978f4fa3ab878187ce47c6265f947c8a09c109045.pdf **Pins:** - D_1 [pin 5] - D_2 [pin 6] - D_3 [pin 7] - D_4 [pin 8] - D_5 [pin 9] - G [pin 4] - S_1 [pin 1] - S_2 [pin 2] - S_3 [pin 3] ### Q18 — [AONS66614](https://www.flux.ai/silicon-yard/aons66614.md) - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/user-uploaded/f2e0549afe9256ed3eab48b978f4fa3ab878187ce47c6265f947c8a09c109045.pdf - Functional Group: Ignition Output Drivers - Manufacturer Part Number: AONS66614 - Part Type: Transistor - Manufacturer Name: Alpha & Omega Semiconductors - Package or Case Code: 8-DFN (5x6) - Symbol Style: parametric-v1 - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - D_1 [pin 5] - D_2 [pin 6] - D_3 [pin 7] - D_4 [pin 8] - D_5 [pin 9] - G [pin 4] - S_1 [pin 1] - S_2 [pin 2] - S_3 [pin 3] ### Q19 — [MMBT3904LT1G](https://www.flux.ai/openpartlist/mmbt3904lt1g~s5.md) - Part Type: Transistor - Datasheet URL: https://www.onsemi.com/pdf/datasheet/mmbt3904lt1-d.pdf - Manufacturer Name: onsemi - License: https://creativecommons.org/licenses/by/4.0/ - Functional Group: Hardware Fire Window - Manufacturer Part Number: MMBT3904LT1G **Pins:** - B [pin 1] - C [pin 3] - E [pin 2] ### Q2 — [AONS66614](https://www.flux.ai/silicon-yard/aons66614.md) - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/user-uploaded/f2e0549afe9256ed3eab48b978f4fa3ab878187ce47c6265f947c8a09c109045.pdf - Functional Group: Ignition Output Drivers - Manufacturer Part Number: AONS66614 - Part Type: Transistor - Manufacturer Name: Alpha & Omega Semiconductors - Package or Case Code: 8-DFN (5x6) - Symbol Style: parametric-v1 - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - D_1 [pin 5] - D_2 [pin 6] - D_3 [pin 7] - D_4 [pin 8] - D_5 [pin 9] - G [pin 4] - S_1 [pin 1] - S_2 [pin 2] - S_3 [pin 3] ### Q3 — [AONS66614](https://www.flux.ai/silicon-yard/aons66614.md) - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/user-uploaded/f2e0549afe9256ed3eab48b978f4fa3ab878187ce47c6265f947c8a09c109045.pdf - Functional Group: Ignition Output Drivers - Manufacturer Part Number: AONS66614 - Manufacturer Name: Alpha & Omega Semiconductors - Package or Case Code: 8-DFN (5x6) - Part Type: Transistor - License: https://creativecommons.org/licenses/by/4.0/ - Symbol Style: parametric-v1 **Pins:** - D_1 [pin 5] - D_2 [pin 6] - D_3 [pin 7] - D_4 [pin 8] - D_5 [pin 9] - G [pin 4] - S_1 [pin 1] - S_2 [pin 2] - S_3 [pin 3] ### Q4 — [AONS66614](https://www.flux.ai/silicon-yard/aons66614.md) - Manufacturer Part Number: AONS66614 - License: https://creativecommons.org/licenses/by/4.0/ - Symbol Style: parametric-v1 - Manufacturer Name: Alpha & Omega Semiconductors - Package or Case Code: 8-DFN (5x6) - Part Type: Transistor - Functional Group: Ignition Output Drivers - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/user-uploaded/f2e0549afe9256ed3eab48b978f4fa3ab878187ce47c6265f947c8a09c109045.pdf **Pins:** - D_1 [pin 5] - D_2 [pin 6] - D_3 [pin 7] - D_4 [pin 8] - D_5 [pin 9] - G [pin 4] - S_1 [pin 1] - S_2 [pin 2] - S_3 [pin 3] ### Q5 — [AONS66614](https://www.flux.ai/silicon-yard/aons66614.md) - Manufacturer Part Number: AONS66614 - Part Type: Transistor - Manufacturer Name: Alpha & Omega Semiconductors - Package or Case Code: 8-DFN (5x6) - Symbol Style: parametric-v1 - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/user-uploaded/f2e0549afe9256ed3eab48b978f4fa3ab878187ce47c6265f947c8a09c109045.pdf - Functional Group: Ignition Output Drivers **Pins:** - D_1 [pin 5] - D_2 [pin 6] - D_3 [pin 7] - D_4 [pin 8] - D_5 [pin 9] - G [pin 4] - S_1 [pin 1] - S_2 [pin 2] - S_3 [pin 3] ### Q6 — [AONS66614](https://www.flux.ai/silicon-yard/aons66614.md) - Manufacturer Part Number: AONS66614 - Manufacturer Name: Alpha & Omega Semiconductors - Package or Case Code: 8-DFN (5x6) - Part Type: Transistor - License: https://creativecommons.org/licenses/by/4.0/ - Symbol Style: parametric-v1 - Functional Group: Ignition Output Drivers - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/user-uploaded/f2e0549afe9256ed3eab48b978f4fa3ab878187ce47c6265f947c8a09c109045.pdf **Pins:** - D_1 [pin 5] - D_2 [pin 6] - D_3 [pin 7] - D_4 [pin 8] - D_5 [pin 9] - G [pin 4] - S_1 [pin 1] - S_2 [pin 2] - S_3 [pin 3] ### Q7 — [AONS66614](https://www.flux.ai/silicon-yard/aons66614.md) - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/user-uploaded/f2e0549afe9256ed3eab48b978f4fa3ab878187ce47c6265f947c8a09c109045.pdf - Functional Group: Ignition Output Drivers - Manufacturer Part Number: AONS66614 - Part Type: Transistor - Manufacturer Name: Alpha & Omega Semiconductors - Package or Case Code: 8-DFN (5x6) - Symbol Style: parametric-v1 - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - D_1 [pin 5] - D_2 [pin 6] - D_3 [pin 7] - D_4 [pin 8] - D_5 [pin 9] - G [pin 4] - S_1 [pin 1] - S_2 [pin 2] - S_3 [pin 3] ### Q8 — [AONS66614](https://www.flux.ai/silicon-yard/aons66614.md) - Manufacturer Part Number: AONS66614 - License: https://creativecommons.org/licenses/by/4.0/ - Symbol Style: parametric-v1 - Manufacturer Name: Alpha & Omega Semiconductors - Package or Case Code: 8-DFN (5x6) - Part Type: Transistor - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/user-uploaded/f2e0549afe9256ed3eab48b978f4fa3ab878187ce47c6265f947c8a09c109045.pdf - Functional Group: Ignition Output Drivers **Pins:** - D_1 [pin 5] - D_2 [pin 6] - D_3 [pin 7] - D_4 [pin 8] - D_5 [pin 9] - G [pin 4] - S_1 [pin 1] - S_2 [pin 2] - S_3 [pin 3] ### Q9 — [AONS66614](https://www.flux.ai/silicon-yard/aons66614.md) - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/user-uploaded/f2e0549afe9256ed3eab48b978f4fa3ab878187ce47c6265f947c8a09c109045.pdf - Functional Group: Ignition Output Drivers - Manufacturer Part Number: AONS66614 - Manufacturer Name: Alpha & Omega Semiconductors - Package or Case Code: 8-DFN (5x6) - Part Type: Transistor - License: https://creativecommons.org/licenses/by/4.0/ - Symbol Style: parametric-v1 **Pins:** - D_1 [pin 5] - D_2 [pin 6] - D_3 [pin 7] - D_4 [pin 8] - D_5 [pin 9] - G [pin 4] - S_1 [pin 1] - S_2 [pin 2] - S_3 [pin 3] ### TP1 — [Generic Testpoint](https://www.flux.ai/jharwinbarrozo/generic-testpoint~esx.md) - Role: Test Point - Part Type: Test Point - Functional Group: Safety-Critical Test Access - Testpoint Size: 0.5 - Role Details: BAT_PROTECTED safety bring-up **Pins:** - P1 [pin 1] ### TP2 — [Generic Testpoint](https://www.flux.ai/jharwinbarrozo/generic-testpoint~esx.md) - Part Type: Test Point - Role: Test Point - Role Details: 3V3 safety bring-up - Functional Group: Safety-Critical Test Access - Testpoint Size: 0.5 **Pins:** - P1 [pin 1] ### TP3 — [Generic Testpoint](https://www.flux.ai/jharwinbarrozo/generic-testpoint~esx.md) - Testpoint Size: 0.5 - Functional Group: Safety-Critical Test Access - Role: Test Point - Part Type: Test Point - Role Details: Battery-dependent current-limited firing rail safety bring-up **Pins:** - P1 [pin 1] ### TP4 — [Generic Testpoint](https://www.flux.ai/jharwinbarrozo/generic-testpoint~esx.md) - Functional Group: Safety-Critical Test Access - Role: Test Point - Testpoint Size: 0.5 - Role Details: Isolated trigger logic safety bring-up - Part Type: Test Point **Pins:** - P1 [pin 1] ### TP5 — [Generic Testpoint](https://www.flux.ai/jharwinbarrozo/generic-testpoint~esx.md) - Role: Test Point - Testpoint Size: 0.5 - Role Details: Global hardware fire enable safety bring-up - Part Type: Test Point - Functional Group: Safety-Critical Test Access **Pins:** - P1 [pin 1] ### TP6 — [Generic Testpoint](https://www.flux.ai/jharwinbarrozo/generic-testpoint~esx.md) - Part Type: Test Point - Functional Group: Safety-Critical Test Access - Role Details: Ground safety bring-up - Role: Test Point - Testpoint Size: 0.5 **Pins:** - P1 [pin 1] ### U1 — [STM32G031C8T6](https://www.flux.ai/lcsc/stm32g031c8t6~5mbo.md) - Package or Case Code: LQFP-48_L7.0-W7.0-P0.50-LS9.0-BL - Manufacturer Part Number: STM32G031C8T6 - LCSC Part Number: C432205 - Part Type: ST Microelectronics - Product Info Url: https://lcsc.com/product-detail/ST-Microelectronics_STMicroelectronics-STM32G031C8T6_C432205.html - Functional Group: MCU and Safety Control - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2304140030_STMicroelectronics-STM32G031C8T6_C432205.pdf - Manufacturer Name: ST(意法半导体) - JLCPCB Part Class: Extended Part **Pins:** - PA0 [pin 11] - PA1 [pin 12] - PA10 [pin 32] - PA11[PA9] [pin 33] - PA12[PA10] [pin 34] - PA13 [pin 35] - PA14-BOOT0 [pin 36] - PA15 [pin 37] - PA2 [pin 13] - PA3 [pin 14] - PA4 [pin 15] - PA5 [pin 16] - PA6 [pin 17] - PA7 [pin 18] - PA8 [pin 28] - PA9 [pin 29] - PB0 [pin 19] - PB1 [pin 20] - PB10 [pin 22] - PB11 [pin 23] - PB12 [pin 24] - PB13 [pin 25] - PB14 [pin 26] - PB15 [pin 27] - PB2 [pin 21] - PB3 [pin 42] - PB4 [pin 43] - PB5 [pin 44] - PB6 [pin 45] - PB7 [pin 46] - PB8 [pin 47] - PB9 [pin 48] - PC13 [pin 1] - PC14-OSC32_IN [pin 2] - PC15-OSC32_OUT [pin 3] - PC6 [pin 30] - PC7 [pin 31] - PD0 [pin 38] - PD1 [pin 39] - PD2 [pin 40] - PD3 [pin 41] - PF0-OSC_IN [pin 8] - PF1-OSC_OUT [pin 9] - PF2-NRST [pin 10] - VBAT [pin 4] - VDD/VDDA [pin 6] - VREF+ [pin 5] - VSS/VSSA [pin 7] ### U2 — [LMR36503RFRPER](https://www.flux.ai/silicon-yard/lmr36503rfrper.md) - Symbol Style: parametric-v1 - Manufacturer Part Number: LMR36503RFRPER - Functional Group: 3V3 Buck Supply - Part Type: Integrated Circuit - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/user-uploaded/8b7f97f240ebf817a7bc2c17dee1cff8c7648a07929f962bdf01abe83c8efb88.pdf - Manufacturer Name: Texas Instruments **Pins:** - BOOT [pin 6] - EN/UVLO [pin 3] - FB_1 [pin 8] - FB_2 [pin 13] - GND [pin 9] - PGOOD [pin 2] - RT_1 [pin 1] - RT_2 [pin 10] - SW_1 [pin 5] - SW_2 [pin 12] - VCC [pin 7] - VIN_1 [pin 4] - VIN_2 [pin 11] ### U3 — [TCMT1100](https://www.flux.ai/lcsc/tcmt1100~id3m.md) - JLCPCB Part Class: Extended Part - Package or Case Code: SOP-4_L4.4-W2.8-P1.27-LS7.0-TL - Functional Group: COBRA Isolated Input - Product Info Url: https://lcsc.com/product-detail/SMD-Optocouplers_VISHAY_TCMT1100_TCMT1100_C118298.html - Manufacturer Name: VISHAY(威世) - Part Type: Optocouplers - Phototransistor Output - LCSC Part Number: C118298 - Manufacturer Part Number: TCMT1100 - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2410121924_Vishay-Intertech-TCMT1100_C118298.pdf **Pins:** - AN [pin 1] - CAT [pin 2] - COL [pin 4] - EM [pin 3] ### U4 — [74HC123PW-Q100,118](https://www.flux.ai/lcsc/74hc123pw-q100c118~44of.md) - Functional Group: Hardware Fire Window - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2407241036_Nexperia-74HC123PW-Q100-118_C546550.pdf - Product Info Url: https://lcsc.com/product-detail/presales_Nexperia-74HC123PW-Q100-118_C546550.html - Package or Case Code: TSSOP-16_L5.0-W4.4-P0.65-LS6.4-BL - LCSC Part Number: C546550 - Manufacturer Name: Nexperia(安世) - Part Type: Multivibrators - JLCPCB Part Class: Extended Part - Manufacturer Part Number: 74HC123PW-Q100,118 **Pins:** - ~{1A} [pin 1] - ~{1Q} [pin 4] - ~{1RD} [pin 3] - ~{2A} [pin 9] - ~{2Q} [pin 12] - ~{2RD} [pin 11] - 1B [pin 2] - 1CEXT [pin 14] - 1Q [pin 13] - 1REXT/CEXT [pin 15] - 2B [pin 10] - 2CEXT [pin 6] - 2Q [pin 5] - 2REXT/CEXT [pin 7] - GND [pin 8] - VCC [pin 16] ### U5 — [TPS26630RGE](https://www.flux.ai/kicad-part-library/tps26630rge~yk.md) - Datasheet URL: https://www.ti.com/lit/ds/symlink/tps2663.pdf - Manufacturer Part Number: TPS26630RGE - Role: Firing Rail Current Limiter - Functional Group: Firing Rail Safety - Role Details: TPS26630 with 6.04 kΩ ILIM gives nominal 2.98 A. Rail follows protected 5S battery minus diode/eFuse drops; not regulated to 18 V below battery headroom. - Manufacturer Name: Texas Instruments Inc. - Package or Case Code: Texas_RGE0024H_VQFN-24-1EP_4x4mm_P0.5mm_EP2.7x2.7mm_ThermalVias **Pins:** - ~{FLT} [pin 14] - ~{SHDN} [pin 12] - B_GATE [pin 3] - DRV [pin 4] - dVdT [pin 9] - GND [pin 25] - GND [pin 8] - ILIM [pin 10] - IMON [pin 13] - IN [pin 1] - IN [pin 2] - IN_SYS [pin 5] - MODE [pin 11] - NC [pin 19] - NC [pin 21] - NC [pin 22] - NC [pin 23] - NC [pin 20] - NC [pin 24] - OUT [pin 18] - OUT [pin 17] - OVP [pin 7] - PGOOD [pin 16] - PGTH [pin 15] - UVLO [pin 6] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/nsteinseifer/18-channel-firework-stepper~bg](https://www.flux.ai/nsteinseifer/18-channel-firework-stepper~bg).* --- *Generated from [https://www.flux.ai/nsteinseifer/18-channel-firework-stepper~bg](https://www.flux.ai/nsteinseifer/18-channel-firework-stepper~bg)*