# Artificial Olive Interocitor ## Description Rechargeable Non-Lethal Bee Venom Stimulator with TP4056 Charging, MT3608 Boost to 9–12 V, NE556 Dual-Timer Pulse Control, and NPN Output Drivers on Single-Layer Through-Hole PCB #LiIon #USBCharge #Boost #NE556 #NPNDrivers #ThroughHolePCB ## Project Details - **Owner:** poseidon3191 - **Created:** 1/29/2026 - **Last Updated:** 1/29/2026 - **Visibility:** Public - **Operating Temperature:** Room-temperature lab prototype; detailed range TBD - **Operating Voltage:** 9V - **Domain:** Medical - **Mounting Solution:** Panel-mount inside non-conductive enclosure; PCB located via enclosure features and connector positions; no dedicated PCB mounting holes required. - **Human Interface:** Switches - **License:** https://creativecommons.org/licenses/by/4.0/ - **System Architecture:** flowchart TD USBInput["USB Input"] TP4056["TP4056 Charger"] PowerPath["Power-Path Logic"] VBAT["VBAT Rail"] Boost["MT3608 Boost Converter"] VCC["System VCC Rail"] Timer["NE556 Dual-Timer Stage"] Drivers["NPN Output Drivers"] USBInput --> TP4056 TP4056 --> PowerPath TP4056 --> VBAT VBAT --> Boost PowerPath --> VCC Boost --> VCC VCC --> Timer VCC --> Drivers - **Manufacturing Quantity Target:** 5 - **Power Requirements:** USB; Battery ## Key Components ### D1 — [1N4007](https://www.flux.ai/adrian95/1n4007.md) - Datasheet URL: https://diotec.com/tl_files/diotec/files/pdf/datasheets/1n4001.pdf - Role: Protection - Max Reverse Voltage: 1000V - Role Details: Reverse-polarity protection diode - Part Type: Diode - Package: DO-41 - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: 1N4007 - Manufacturer Name: Yangjie Technology **Pins:** - anode [pin 2] - cathode [pin 1] ### D2 — [1N4148-1](https://www.flux.ai/gaby27/1n4148-1.md) - Manufacturer Part Number: 1N4148-1 - Role: Phase Shifting - Max Reverse Voltage: 100V - Datasheet URL: https://www.mouser.com/datasheet/2/308/1N914_D-1801484.pdf - Package: DO-35 - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Diode - Manufacturer Name: Microchip - Role Details: Signal inversion for Q2 base drive **Pins:** - A [pin 2] - K [pin 1] ### D3 — [1N4148-1](https://www.flux.ai/gaby27/1n4148-1.md) - Part Type: Diode - Package: DO-35 - Datasheet URL: https://www.mouser.com/datasheet/2/308/1N914_D-1801484.pdf - License: https://creativecommons.org/licenses/by/4.0/ - Role Details: Inversion diode for second transistor base drive - Manufacturer Part Number: 1N4148-1 - Max Reverse Voltage: 100V - Manufacturer Name: Microchip - Role: Signal Inversion **Pins:** - A [pin 2] - K [pin 1] ### F1 — [MF-MSMF010-2](https://www.flux.ai/adrian95/mf-msmf010-2.md) - Part Type: Fuse - Role Details: Optional 100 mA resettable fuse for battery input - Role: Protection - Manufacturer Name: Bourns Inc. - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: MF-MSMF010-2 - Datasheet URL: https://www.bourns.com/docs/product-datasheets/mf-msmf.pdf - Package: 1812 (4532 Metric) **Pins:** - P1 [pin 1] - P2 [pin 2] ### J1 — [2-Position Top Entry Screw Terminal](https://www.flux.ai/corynrobinson/2-position-top-entry-screw-terminal.md) - Datasheet URL: https://media.digikey.com/pdf/Data%20Sheets/Phoenix%20Contact%20PDFs/1935310.pdf - Part Type: Connector - Manufacturer Name: Phoenix - Package: Pitch 5.0mm - Role: Connector - Role Details: Battery input connector - Manufacturer Part Number: 1935310 **Pins:** - P1 [pin 1] - P2 [pin 2] ### J2 — [2-Position Top Entry Screw Terminal](https://www.flux.ai/corynrobinson/2-position-top-entry-screw-terminal.md) - Package: Pitch 5.0mm - Manufacturer Part Number: 1935310 - Part Type: Connector - Role Details: GRID_A and GRID_B output connector - Datasheet URL: https://media.digikey.com/pdf/Data%20Sheets/Phoenix%20Contact%20PDFs/1935310.pdf - Manufacturer Name: Phoenix - Role: Connector **Pins:** - P1 [pin 1] - P2 [pin 2] ### J3 — [2024100002](https://www.flux.ai/adrian95/2024100002.md) - Role Details: USB-C power input and charging connector - Part Type: Connector - Manufacturer Part Number: 2024100002 - Role: Connector - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://mm.digikey.com/Volume0/opasdata/d220001/medias/docus/834/202410002_Pkg_Spec.pdf - Manufacturer Name: Molex **Pins:** - CC1 [pin A5] - CC2 [pin B5] - DA- [pin A7] - DA+ [pin A6] - DB- [pin B7] - DB+ [pin B6] - GND1 [pin A1] - GND2 [pin A12] - GND3 [pin B1] - GND4 [pin B12] - RX1- [pin B10] - RX1+ [pin B11] - RX2- [pin A10] - RX2+ [pin A11] - SBU1 [pin A8] - SBU2 [pin B8] - SHIELD1 [pin SH1] - SHIELD2 [pin SH2] - SHIELD3 [pin SH3] - SHIELD4 [pin SH4] - TX1- [pin A3] - TX1+ [pin A2] - TX2- [pin B3] - TX2+ [pin B2] - VBUS1 [pin A4] - VBUS2 [pin A9] - VBUS3 [pin B4] - VBUS4 [pin B9] ### LED1 — [150060VS55040](https://www.flux.ai/adrian95/150060vs55040.md) - Manufacturer Part Number: 150060VS55040 - Manufacturer Name: Würth Elektronik - Package: 0603 (1608 Metric) - Part Type: LED - License: https://creativecommons.org/licenses/by/4.0/ - Role Details: Charge status indicator LED driven by STAT pin of U2 - Max Reverse Voltage: 5V - Datasheet URL: https://www.we-online.com/components/products/datasheet/150060VS55040.pdf - Role: LED **Pins:** - A [pin 2] - K [pin 1] ### LED2 — [150060VS55040](https://www.flux.ai/adrian95/150060vs55040.md) - Max Reverse Voltage: 5V - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: LED - Role: LED - Manufacturer Part Number: 150060VS55040 - Manufacturer Name: Würth Elektronik - Package: 0603 (1608 Metric) - Role Details: Power indicator LED - Datasheet URL: https://www.we-online.com/components/products/datasheet/150060VS55040.pdf **Pins:** - A [pin 2] - K [pin 1] ### Q1 — [MMBT3904-TP](https://www.flux.ai/jecstronic/mmbt3904-tp.md) - Breakdown Voltage: 40V - Package: SOT-23 - Role: Switching - Datasheet URL: https://www.mccsemi.com/pdf/Products/MMBT3904(SOT-23).pdf - Manufacturer Part Number: MMBT3904-TP - Part Type: Transistor - Manufacturer Name: Micro Commercial Co - License: https://creativecommons.org/licenses/by/4.0/ - Role Details: Output stage transistor driving GRID_A (emitter to GND, collector via 680 Ω pull-up to VCC) **Pins:** - B [pin 1] - C [pin 3] - E [pin 2] ### Q2 — [MMBT3904-TP](https://www.flux.ai/jecstronic/mmbt3904-tp.md) - License: https://creativecommons.org/licenses/by/4.0/ - Breakdown Voltage: 40V - Package: SOT-23 - Manufacturer Name: Micro Commercial Co - Role Details: Output stage transistor driving GRID_B (emitter to GND, collector via 680 Ω pull-up to VCC) - Part Type: Transistor - Role: Switching - Datasheet URL: https://www.mccsemi.com/pdf/Products/MMBT3904(SOT-23).pdf - Manufacturer Part Number: MMBT3904-TP **Pins:** - B [pin 1] - C [pin 3] - E [pin 2] ### Q3 — [DMG9926UDM](https://www.flux.ai/kicad-part-library/dmg9926udm.md) - Datasheet URL: https://www.diodes.com/assets/Datasheets/ds31770.pdf - Role Details: External dual MOSFET for DW01A back-to-back pack protection - Manufacturer Part Number: DMG9926UDM - Role: Protection - Package or Case Code: SOT-23-6 **Pins:** - D1 [pin 1] - G1 [pin 6] - G2 [pin 4] - S1/D2 [pin 2] - S1/D2 [pin 5] - S2 [pin 3] ### Q4 — [RU207C](https://www.flux.ai/vasy_skral/ru207c.md) - Manufacturer Part Number: RU207C - Role: Power Path - Part Type: Transistor - Datasheet URL: https://datasheet.lcsc.com/lcsc/2004231002_Shenzhen-ruichips-Semicon-RU207C_C515680.pdf - Role Details: Ideal-diode MOSFET for USB/battery power-path switching controlled by U4 - Manufacturer Name: Shenzhen ruichips Semicon **Pins:** - D [pin 3] - G [pin 1] - S [pin 2] ### Q5 — [MMBT3904-TP](https://www.flux.ai/jecstronic/mmbt3904-tp.md) - Manufacturer Part Number: MMBT3904-TP - Datasheet URL: https://www.mccsemi.com/pdf/Products/MMBT3904(SOT-23).pdf - Role: Switching - Package: SOT-23 - Manufacturer Name: Micro Commercial Co - Role Details: Output stage NPN transistor for GRID drivers - Part Type: Transistor - Breakdown Voltage: 40V - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - B [pin 1] - C [pin 3] - E [pin 2] ### Q6 — [MMBT3904-TP](https://www.flux.ai/jecstronic/mmbt3904-tp.md) - Part Type: Transistor - Role Details: Output stage NPN transistor for GRID drivers - Manufacturer Name: Micro Commercial Co - Datasheet URL: https://www.mccsemi.com/pdf/Products/MMBT3904(SOT-23).pdf - Manufacturer Part Number: MMBT3904-TP - Package: SOT-23 - License: https://creativecommons.org/licenses/by/4.0/ - Breakdown Voltage: 40V - Role: Switching **Pins:** - B [pin 1] - C [pin 3] - E [pin 2] ### U1 — [NE556IC](https://www.flux.ai/jecstronic/ne556ic.md) - Role: Timing - Datasheet URL: https://www.ti.com/general/docs/suppproductinfo.tsp?distId=10&gotoUrl=https%3A%2F%2Fwww.ti.com%2Flit%2Fgpn%2Fna556 - Role Details: Dual timer for Timer A (astable) and Timer B (burst gate) - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Integrated Circuit - Manufacturer Part Number: NE556DR - Manufacturer Name: Texas Instruments - Max Input Voltage: 16V **Pins:** - 1CONT [pin 3] - 1DISCH [pin 1] - 1OUT [pin 5] - 1RESET [pin 4] - 1THRES [pin 2] - 1TRIG [pin 6] - 2CONT [pin 11] - 2DISCH [pin 13] - 2OUT [pin 9] - 2RESET [pin 10] - 2THRES [pin 12] - 2TRIG [pin 8] - GND [pin 7] - VCC [pin 14] ### U2 — [MCP73831T-2ACI/OT](https://www.flux.ai/adrian95/mcp73831t-2aciot.md) - Datasheet URL: https://ww1.microchip.com/downloads/en/DeviceDoc/MCP73831-Family-Data-Sheet-DS20001984H.pdf - Manufacturer Part Number: MCP73831T-2ACI/OT - Part Type: Integrated Circuit - Manufacturer Name: Microchip Technology - Max Input Voltage: 6V - Role Details: Single-cell Li-ion battery charger ≤100 mA - Role: Power Conversion - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - PROG [pin 5] - STAT [pin 1] - VBAT [pin 3] - VIN [pin 4] - VSS [pin 2] ### U3 — [DW01A](https://www.flux.ai/lcsc/dw01a.md) - Role Details: Battery overcharge, overdischarge, and overcurrent protection - LCSC Part Number: C2927799 - Part Type: Battery Management ICs - Manufacturer Part Number: DW01A - Manufacturer Name: YONGYUTAI(永裕泰) - JLCPCB Part Class: Extended Part - Max Input Voltage: 7V - Role: Protection - Package or Case Code: SOT-23-6_L2.9-W1.6-P0.95-LS2.8-BL **Pins:** - CSI [pin 2] - NC [pin 4] - OC [pin 3] - OD [pin 1] - VDD [pin 5] - VSS [pin 6] ### U4 — [LTC4359HDCB#TRPBF](https://www.flux.ai/jecstronic/ltc4359hdcbtrpbf.md) - Manufacturer Part Number: LTC4359HDCB#TRPBF - Datasheet URL: http://www.analog.com/media/en/technical-documentation/data-sheets/ltc4359.pdf - Role: Power Path - Max Input Voltage: 36V - Role Details: Ideal diode controller for USB/battery power-path MOSFET switching - Manufacturer Name: Analog Devices Inc. - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Integrated Circuit **Pins:** - *SHDN [pin 5] - EPAD [pin 7] - GATE [pin 2] - IN [pin 4] - OUT [pin 1] - SOURCE [pin 3] - VSS [pin 6] ### U5 — [TP4056_Module](https://www.flux.ai/wolfxpac/tp4056module.md) - Datasheet URL: https://robocraze.com/products/tp4056-lithium-battery-charging-board - Role: Protection - Max Input Voltage: 8V - Manufacturer Name: Generic - Part Type: Module - License: https://creativecommons.org/licenses/by/4.0/ - Role Details: USB Li-ion charge and protection module **Pins:** - BAT- [pin 5] - BAT+ [pin 6] - IN- [pin 1] - IN+ [pin 2] - OUT- [pin 3] - OUT+ [pin 4] ### U6 — [MT3608 - 4414693](https://www.flux.ai/kicad-part-library/mt3608-4414693.md) - Role Details: Boost converter stepping VBAT to 9–12V - Role: Power Conversion - Max Input Voltage: 28V - Package or Case Code: SOT-23-6 - Datasheet URL: https://www.olimex.com/Products/Breadboarding/BB-PWR-3608/resources/MT3608.pdf - Manufacturer Part Number: MT3608 **Pins:** - EN [pin 4] - FB [pin 3] - GND [pin 2] - IN [pin 5] - NC [pin 6] - SW [pin 1] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/poseidon3191/artificial-olive-interocitor](https://www.flux.ai/poseidon3191/artificial-olive-interocitor).* --- *Generated from [https://www.flux.ai/poseidon3191/artificial-olive-interocitor](https://www.flux.ai/poseidon3191/artificial-olive-interocitor)*