# Tacoma M5Stack Dial Controller ## Description Ignition-powered M5Stack Dial controller for a 2004 Toyota Tacoma, providing Joying KEY/SWC radio controls and optically isolated Valvetronic remote-button control. ## Project Details - **Owner:** tucker24 - **Created:** 8/17/2026 - **Last Updated:** 8/17/2026 - **Visibility:** Public ## Key Components ### J1 — [Pin Header 01x02 2.54mm Vertical](https://www.flux.ai/jharwinbarrozo/generic-pin-header-01x02-2p54mm-vertical~4uy.md) - Role Details: Pin 1 GPIO_3V3; Pin 2 M5_GND - Role: Isolation - Part Type: Connector - License: https://creativecommons.org/licenses/by/4.0/ - Functional Group: M5 Control Domain **Pins:** - P1 [pin 1] - P2 [pin 2] ### J2 — [Pin Header 01x02 2.54mm Vertical](https://www.flux.ai/jharwinbarrozo/generic-pin-header-01x02-2p54mm-vertical~4uy.md) - License: https://creativecommons.org/licenses/by/4.0/ - Functional Group: Remote Test Domain - Role: Isolation - Part Type: Connector - Role Details: Pin 1 REMOTE_3V27; Pin 2 REMOTE_GND **Pins:** - P1 [pin 1] - P2 [pin 2] ### J3 — [Pin Header 01x02 2.54mm Vertical](https://www.flux.ai/jharwinbarrozo/generic-pin-header-01x02-2p54mm-vertical~4uy.md) - Role Details: Pin 1 SW_HIGH; Pin 2 REMOTE_GND - Part Type: Connector - Functional Group: Remote Test Domain - License: https://creativecommons.org/licenses/by/4.0/ - Role: Sensing (Shunt) **Pins:** - P1 [pin 1] - P2 [pin 2] ### TP1 — [1040](https://www.flux.ai/cherepanyadima/1040~lm.md) - Role: Sensing (Shunt) - Part Type: Connectors - Functional Group: M5 Control Domain - Manufacturer Part Number: 1040 - Datasheet URL: https://www.keyelco.com/userAssets/file/K75p63.pdf - Role Details: LED_ANODE probe point after R1 - Manufacturer Name: Keystone **Pins:** - TP [pin TP] ### TP2 — [1040](https://www.flux.ai/cherepanyadima/1040~lm.md) - Functional Group: Remote Test Domain - Part Type: Connectors - Manufacturer Name: Keystone - Manufacturer Part Number: 1040 - Role: Sensing (Shunt) - Role Details: SW_HIGH collector output probe point - Datasheet URL: https://www.keyelco.com/userAssets/file/K75p63.pdf **Pins:** - TP [pin TP] ### U1 — [PC817C](https://www.flux.ai/lcsc/pc817c~3vwa.md) - Package or Case Code: DIP-4_L4.6-W6.5-P2.54-LS7.6-BL - Part Type: Optocouplers - Phototransistor Output - LCSC Part Number: C115500 - Product Info Url: https://lcsc.com/product-detail/DIP-Optocouplers_PC817C_C115500.html - JLCPCB Part Class: Extended Part - Manufacturer Part Number: PC817C - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/1809251512_Wuxi-China-Resources-Huajing-Microelectronics-PC817C_C115500.pdf - Manufacturer Name: 华润华晶 - Role: Isolation - Role Details: PC817C DIP-4: 1 anode, 2 cathode, 3 emitter, 4 collector - Functional Group: Isolation Barrier **Pins:** - AN [pin 1] - CAT [pin 2] - COL [pin 4] - EM [pin 3] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/tucker24/tacoma-m5stack-dial-controller~pz](https://www.flux.ai/tucker24/tacoma-m5stack-dial-controller~pz).* --- *Generated from [https://www.flux.ai/tucker24/tacoma-m5stack-dial-controller~pz](https://www.flux.ai/tucker24/tacoma-m5stack-dial-controller~pz)*