# Crooked Copper Dejarik ## Description 6x Warm-White 5mm LED Ring (2 constant, 4 flicker) on 4.5 V battery w/ high-side SPST and bussed 6x330 ohm resistor network ## Project Details - **Owner:** kellyuno - **Created:** 2/12/2026 - **Last Updated:** 2/12/2026 - **Visibility:** Public - **System Architecture:** ```mermaid flowchart TD BATT["4.5V Battery Pack (3xAA)"] --> SW["High-side SPST Switch"] SW --> BUS["Resistor Network Common Pin 1"] BUS --> RCH2["Channel 1 Resistor -> Pin 2"] BUS --> RCH3["Channel 2 Resistor -> Pin 3"] BUS --> RCH4["Channel 3 Resistor -> Pin 4"] BUS --> RCH5["Channel 4 Resistor -> Pin 5"] BUS --> RCH6["Channel 5 Resistor -> Pin 6"] BUS --> RCH7["Channel 6 Resistor -> Pin 7"] RCH2 --> LED1["LED1 Anode"] RCH3 --> LED2["LED2 Anode"] RCH4 --> LED3["LED3 Anode"] RCH5 --> LED4["LED4 Anode"] RCH6 --> LED5["LED5 Anode"] RCH7 --> LED6["LED6 Anode"] LED1 --> GND["Ground"] LED2 --> GND LED3 --> GND LED4 --> GND LED5 --> GND LED6 --> GND BATT --> GND ``` ## Key Components ### BAT1 — [Keystone 2465](https://www.flux.ai/jecstronic/keystone-2465.md) - Datasheet URL: https://www.keyelco.com/userAssets/file/M65p28.pdf - Manufacturer Part Number: 2465 - Voltage: 4.5V - Part Type: Connector - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Name: Keystone Electronics - Role Details: 3xAA battery holder providing nominal 4.5 V; feeds high-side switch SW1 then RN1 common bus. - Role: Power Source **Pins:** - NEGATIVE [pin 2] - POSITIVE [pin 1] ### D1 — [LED THT](https://www.flux.ai/jharwinbarrozo/led-tht.md) - Manufacturer Part Number: LTL-307E - Breakdown Voltage: 0V - Series Resistance: 0.42Ω - Color: Warm White - Role: Constant - Forward Voltage: 1.70 - Saturation Current: 93.2e-12A - Placement Notes: Place at 0 deg on LED circle (example); opposite D4 at 180 deg; 60 deg spacing overall. - Role Details: Warm-white constant LED; placed opposite D4 in 6-LED circle; anode fed via RN1 channel; cathode to GND - Emission Coefficient: 3.73 - Manufacturer Name: Lite-On - Package: LED_THT_5mm **Pins:** - A [pin 2] - K [pin 1] ### D2 — [LED THT](https://www.flux.ai/jharwinbarrozo/led-tht.md) - Color: Warm White - Package: LED_THT_5mm - Role Details: Warm-white flicker LED; part of 4-LED flicker set in 6-LED circle; anode fed via RN1 channel; cathode to GND - Breakdown Voltage: 0V - Placement Notes: Place at 60 deg on LED circle (example); 60 deg spacing. - Series Resistance: 0.42Ω - Manufacturer Part Number: LTL-307E - Manufacturer Name: Lite-On - Role: Flicker - Saturation Current: 93.2e-12A - Forward Voltage: 1.70 - Emission Coefficient: 3.73 **Pins:** - A [pin 2] - K [pin 1] ### D3 — [LED THT](https://www.flux.ai/jharwinbarrozo/led-tht.md) - Package: LED_THT_5mm - Breakdown Voltage: 0V - Series Resistance: 0.42Ω - Manufacturer Part Number: LTL-307E - Placement Notes: Place at 120 deg on LED circle (example); 60 deg spacing. - Forward Voltage: 1.70 - Saturation Current: 93.2e-12A - Color: Warm White - Emission Coefficient: 3.73 - Role Details: Warm-white flicker LED; part of 4-LED flicker set in 6-LED circle; anode fed via RN1 channel; cathode to GND - Role: Flicker - Manufacturer Name: Lite-On **Pins:** - A [pin 2] - K [pin 1] ### D4 — [LED THT](https://www.flux.ai/jharwinbarrozo/led-tht.md) - Series Resistance: 0.42Ω - Manufacturer Part Number: LTL-307E - Breakdown Voltage: 0V - Package: LED_THT_5mm - Role Details: Warm-white constant LED; placed opposite D1 in 6-LED circle; anode fed via RN1 channel; cathode to GND - Emission Coefficient: 3.73 - Manufacturer Name: Lite-On - Color: Warm White - Forward Voltage: 1.70 - Saturation Current: 93.2e-12A - Role: Constant - Placement Notes: Place at 180 deg on LED circle (example); opposite D1. **Pins:** - A [pin 2] - K [pin 1] ### D5 — [LED THT](https://www.flux.ai/jharwinbarrozo/led-tht.md) - Manufacturer Part Number: LTL-307E - Role: Flicker - Series Resistance: 0.42Ω - Breakdown Voltage: 0V - Role Details: Warm-white flicker LED; part of 4-LED flicker set in 6-LED circle; anode fed via RN1 channel; cathode to GND - Color: Warm White - Placement Notes: Place at 240 deg on LED circle (example); 60 deg spacing. - Emission Coefficient: 3.73 - Saturation Current: 93.2e-12A - Forward Voltage: 1.70 - Manufacturer Name: Lite-On - Package: LED_THT_5mm **Pins:** - A [pin 2] - K [pin 1] ### D6 — [LED THT](https://www.flux.ai/jharwinbarrozo/led-tht.md) - Package: LED_THT_5mm - Role Details: Warm-white flicker LED; part of 4-LED flicker set in 6-LED circle; anode fed via RN1 channel; cathode to GND - Placement Notes: Place at 300 deg on LED circle (example); 60 deg spacing. - Color: Warm White - Emission Coefficient: 3.73 - Role: Flicker - Saturation Current: 93.2e-12A - Forward Voltage: 1.70 - Manufacturer Part Number: LTL-307E - Series Resistance: 0.42Ω - Manufacturer Name: Lite-On - Breakdown Voltage: 0V **Pins:** - A [pin 2] - K [pin 1] ### RN1 — [R_Network06](https://www.flux.ai/kicad-part-library/rnetwork06.md) - Datasheet URL: http://www.vishay.com/docs/31509/csc.pdf - Manufacturer Part Number: R_Network06 - Role Details: Bussed 6-channel resistor network; each channel **330 ohm** initial value. Verify per LED MPN datasheet (forward voltage and target current) for 4.5 V supply. - Role: Current Limit - Resistance: 330 - Part Type: Resistor THT - Package or Case Code: R_Array_SIP7 - Verification: Check LED datasheet Vf at desired If; compute R=(Vbat - Vf)/If; ensure resistor network channel value supports target current across battery range. **Pins:** - common [pin 1] - R1 [pin 2] - R2 [pin 3] - R3 [pin 4] - R4 [pin 5] - R5 [pin 6] - R6 [pin 7] ### SW1 — [DS04-254-2-01BK-SMT](https://www.flux.ai/jecstronic/ds04-254-2-01bk-smt.md) - Manufacturer Name: CUI Devices - Role Details: High-side SPST switch: BAT1:POSITIVE -> SW1 -> RN1:common (SW_OUT) - Datasheet URL: https://www.cuidevices.com/product/resource/ds04-254-smt.pdf - License: https://creativecommons.org/licenses/by/4.0/ - Role: Switch - Manufacturer Part Number: DS04-254-2-01BK-SMT - Part Type: Switch **Pins:** - ~ [pin 1B] - ~ [pin 1A] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/kellyuno/crooked-copper-dejarik](https://www.flux.ai/kellyuno/crooked-copper-dejarik).* --- *Generated from [https://www.flux.ai/kellyuno/crooked-copper-dejarik](https://www.flux.ai/kellyuno/crooked-copper-dejarik)*