# Confident Brown Universal Remote ## Description Dual-Board 433 MHz Rolling-Code ATX Power Controller with Integrated 24-Hour Camera Timer and Debounced 2-Pin PANEL_SW Manual Override on U5 Latch Input (Preserves Camera Dial Microswitch Gating) ## Project Details - **Owner:** c0010 - **Created:** 12/7/2025 - **Last Updated:** 12/7/2025 - **Visibility:** Public - **Human Interface:** Buttons - **System Architecture:** ```mermaid flowchart TD subgraph TransmitterBoard [Transmitter Board] TX["433MHz OOK TX"] ENC["HCS301 Encoder"] BTN["Transmit Button"] end subgraph ReceiverBoard [Receiver Board] TIMER["24h Cam Dial Timer"] GATE["Power Gating"] PS_ON["PS_ON Control (2N7002)"] OVERRIDE["Manual Override"] end TransmitterBoard <-->|433MHz Rolling-Code| ReceiverBoard TIMER --> GATE --> PS_ON OVERRIDE --> PS_ON ``` - **Power Requirements:** Mains - **Domain:** Consumer Electronics - **Connectivity:** WiFi ## Key Components ### J1 — [Molex 44206-0007](https://www.flux.ai/vasy_skral/molex-44206-0007~rru.md) - Datasheet URL: https://www.molex.com/en-us/products/part-detail/442060007 - Role Details: ATX 24-pin style power input providing +5VSB and PS_ON# control signal from PSU. - Role: Power Conversion - Connector Rows: 2 - Package or Case Code: CONN-TH - Part Type: Connector - Connector Pitch: 4.2mm - Mount: Through Hole - Footprint: Molex_Mini-Fit Jr 44206-24A2_2x12_P4.20mm_Vertical - Allow Substitutes: Yes - Manufacturer Name: Molex - Connector Positions: 24 - Connector Type: Power Connectors - Manufacturer Part Number: 44206-0007 **Pins:** - -12V [pin 14] - +12V [pin 11] - +12V [pin 10] - +3.3V [pin 13] - +3.3V [pin 1] - +3.3V [pin 12] - +3.3V [pin 2] - +5V [pin 21] - +5V [pin 22] - +5V [pin 4] - +5V [pin 23] - +5V [pin 6] - +5VSB [pin 9] - GND [pin 5] - GND [pin 15] - GND [pin 24] - GND [pin 7] - GND [pin 18] - GND [pin 17] - GND [pin 19] - GND [pin 3] - NC [pin 20] - PS_ON# [pin 16] - PWR_OK [pin 8] ### PANEL_SW — [2-644861-2](https://www.flux.ai/adrian95/2-644861-2~vfq.md) - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: 2-644861-2 - Datasheet URL: https://www.te.com/commerce/DocumentDelivery/DDEController?Action=srchrtrv&DocNm=644861&DocType=Customer+Drawing&DocLang=English&PartCntxt=2-644861-2&DocFormat=pdf - Package: Through Hole 2.54mm pitch - Role Details: Manual override input header (pin 1 to U5:1CLK, pin 2 to GND) - Role: Connector - Manufacturer Name: TE Connectivity AMP Connectors - Part Type: Connector **Pins:** - Pin_1 [pin 1] - Pin_2 [pin 2] ### Q1 — [2N7002](https://www.flux.ai/lcsc/2n7002~13ip.md) - Role Details: N-channel MOSFET pulling ATX PS_ON# line low under control of flip-flop output LATCH_OUT. - Manufacturer Part Number: 2N7002 - Footprint: SOT-23-3_L2.9-W1.5-P1.90-LS2.6-BR - Datasheet URL: https://www.onsemi.com/pdf/datasheet/2n7002-d.pdf - Drain to Source Voltage: 60V - Transistor Type: MOSFET - Package or Case Code: SOT-23 - Threshold Voltage: 2.1V - Manufacturer Name: ON Semiconductor - Package: SOT-23-3_L2.9-W1.5-P1.90-LS2.6-BR - LCSC Part Number: C472906 - On Resistance: 7.5Ω - Role: Switching - JLCPCB Part Class: Extended Part - Allow Substitutes: Yes - Mount: Surface Mount - Product Info Url: https://lcsc.com/product-detail/MOSFET_MDD-Microdiode-Electronics-2N7002_C472906.html - Continuous Drain Current: 0.2A - Part Type: Transistor **Pins:** - D [pin 3] - G [pin 1] - S [pin 2] ### SW1 — [MS0850502F030P1A](https://www.flux.ai/adrian95/ms0850502f030p1a~2pb.md) - Manufacturer Part Number: MS0850502F030P1A - Footprint: SW_MS0850502F030P1A - Voltage Rating: 12V - Manufacturer Name: C&K - Allow Substitutes: Yes - Part Type: Switch - License: https://creativecommons.org/licenses/by/4.0/ - Current Rating: 0.05A - Role: Switching - Datasheet URL: https://www.ckswitches.com/media/1474/ms.pdf - Mount: Surface Mount - Package or Case Code: SW-SMD - Role Details: User pushbutton to route +5VSB to CAM_PWR and enable camera timer/receiver supply. **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] ### U2 — [TXM-433-LR](https://www.flux.ai/jecstronic/txm-433-lr~quk.md) - Allow Substitutes: No - Operating Voltage: 5V - Role: Signal Generation - Manufacturer Part Number: TXM-433-LR - Datasheet URL: https://linxtechnologies.com/wp/wp-content/uploads/ds-txm-xxx-lr.pdf - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Name: LINX - Part Type: RF Transceiver - Frequency: 433000000Hz - Package or Case Code: Module - Role Details: 433MHz OOK transmitter module for rolling-code control link. - Footprint: TXM433LR - Current: 0.032A - Mount: Through Hole **Pins:** - ANT [pin 5] - DATA [pin 2] - GND [pin 1] - GND [pin 3] - GND [pin 6] - LADJ/VCC [pin 4] - PDN [pin 8] - VCC [pin 7] ### U3 — [RXM-433-LR](https://www.flux.ai/jecstronic/rxm-433-lr~985.md) - Current: 0.008A - Mount: Through Hole - Frequency: 433000000Hz - Footprint: RXM433LR - Role Details: 433MHz OOK superheterodyne receiver module for rolling-code ATX control. - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: RXM-433-LR - Role: Receiver - Part Type: RF Transceiver - Manufacturer Name: LINX - Operating Voltage: 5V - Datasheet URL: https://linxtechnologies.com/wp/wp-content/uploads/ds-rxm-xxx-lr.pdf - Package or Case Code: Module - Allow Substitutes: No **Pins:** - ANT [pin 16] - DATA [pin 8] - GND_1 [pin 4] - GND_2 [pin 15] - NC_1 [pin 1] - NC_2 [pin 2] - NC_3 [pin 3] - NC_4 [pin 9] - NC_5 [pin 10] - NC_6 [pin 11] - NC_7 [pin 12] - NC_8 [pin 13] - NC_9 [pin 14] - PDN [pin 6] - RSSI [pin 7] - VCC [pin 5] ### U4 — [SGM2212-3.3XKC3G/TR](https://www.flux.ai/jecstronic/sgm2212-3p3xkc3gtr~l0g.md) - Mount: Surface Mount - Footprint: SOT230P700X180-4N - Manufacturer Name: SGMICRO - Current Rating: 0.3A - Role: Power Conversion - Manufacturer Part Number: SGM2212-3.3XKC3G/TR - Max Input Voltage: 24V - Datasheet URL: https://www.sg-micro.com/uploads/soft/20221209/1670560458.pdf - Operating Voltage: 3.3V - License: https://creativecommons.org/licenses/by/4.0/ - Package or Case Code: SOT-23-3 - Role Details: 3.3V LDO regulator deriving logic supply from +5VSB or CAM_PWR rail. - Max Output Voltage: 3.3V - Allow Substitutes: Yes - Package: SOT-23-5 - Part Type: Linear Regulator **Pins:** - GND [pin 1] - VIN [pin 3] - VOUT_1 [pin 2] - VOUT_2 [pin 4] ### U5 — [SN74HC74ANSR](https://www.flux.ai/lcsc/sn74hc74ansr~dfl0.md) - Package: SOP-14_L10.2-W5.3-P1.27-LS7.8-BL - Manufacturer Part Number: SN74HC74ANSR - JLCPCB Part Class: Extended Part - Part Type: Integrated Circuit - Operating Temperature: -40 to 85°C - Max Input Voltage: 6V - Integrated Circuit Type: Logic - Logic Function: Flip-Flop - LCSC Part Number: C2864399 - Package or Case Code: 14-SOIC - Role: Latch - Allow Substitutes: Yes - Operating Voltage: 2V - Datasheet URL: https://www.ti.com/lit/ds/symlink/sn74hc74a.pdf - Manufacturer Name: Texas Instruments - Role Details: D-type flip-flop providing latched control signal LATCH_OUT to MOSFET gate for PS_ON line. - Mount: Surface Mount - Footprint: SOP-14_L10.2-W5.3-P1.27-LS7.8-BL **Pins:** - ~{1CLR} [pin 1] - ~{1PRE} [pin 4] - ~{1Q} [pin 6] - ~{2CLR} [pin 13] - ~{2PRE} [pin 10] - ~{2Q} [pin 8] - 1CLK [pin 3] - 1D [pin 2] - 1Q [pin 5] - 2CLK [pin 11] - 2D [pin 12] - 2Q [pin 9] - GND [pin 7] - VCC [pin 14] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/c0010/confident-brown-universal-remote~vj](https://www.flux.ai/c0010/confident-brown-universal-remote~vj).* --- *Generated from [https://www.flux.ai/c0010/confident-brown-universal-remote~vj](https://www.flux.ai/c0010/confident-brown-universal-remote~vj)*