# Tense Sapphire P.K.E. Meter Raspberry Pi 5 HAT ## Description Raspberry Pi 5 HAT for the Tense Sapphire P.K.E. Meter with two GPIO-driven LEDs, one buzzer, and two GPIO buttons on the 40-pin HAT interface. ## Project Details - **Owner:** rishi0604 - **Created:** 3/27/2026 - **Last Updated:** 3/27/2026 - **Visibility:** Public - **Human Interface:** 2 LEDs, 1 buzzer, 2 buttons - **Operating Voltage:** 3.3V - **Part Type:** Raspberry Pi 5 HAT - **Implementation Details:** GPIO map updated: START=BCM17 pin11 active-low with pull-up, STOP=BCM27 pin13 active-low with pull-up, Green LED=BCM22 pin15 via 220R, Red LED=BCM23 pin16 via 220R, Active buzzer=BCM24 pin18, shared GND=pin6. ## Key Components ### D1 — [LED THT](https://www.flux.ai/jharwinbarrozo/led-tht.md) - Breakdown Voltage: 0V - Saturation Current: 93.2e-12A - Emission Coefficient: 3.73 - Forward Voltage: 1.70 - Series Resistance: 0.42Ω **Pins:** - A [pin 2] - K [pin 1] ### D2 — [LED THT](https://www.flux.ai/jharwinbarrozo/led-tht.md) - Forward Voltage: 1.70 - Saturation Current: 93.2e-12A - Breakdown Voltage: 0V - Emission Coefficient: 3.73 - Series Resistance: 0.42Ω **Pins:** - A [pin 2] - K [pin 1] ### LS1 — [CMI-9653S-SMT-TR](https://www.flux.ai/adrian95/cmi-9653s-smt-tr.md) - License: https://creativecommons.org/licenses/by/4.0/ - Role Details: 3.3V active buzzer controlled from Raspberry Pi BCM GPIO24 (physical pin 18) - Package or Case Code: CMI9653SSMTTR - Manufacturer Name: Same Sky - Part Type: Buzzer - Role: Audio Indicator - Implementation Details: Buzzer positive terminal is driven from GPIO24; negative terminal to shared GND on physical pin 6. - Manufacturer Part Number: CMI-9653S-SMT-TR - Package: SMD - Datasheet URL: https://componentsearchengine.com/Datasheets/1/CMI-9653S-SMT-TR.pdf **Pins:** - - [pin 1] - + [pin 2] ### Rpi 51 — [Pin Socket 02x20 for Rpi 5](https://www.flux.ai/project-x/pin-socket-02x20-for-rpi-5.md) - Part Type: Connector - Connector Rows: 2 - Package: Through Hole - License: https://creativecommons.org/licenses/by/4.0/ - Connector Positions: 40 - Connector Pitch: 2.54mm - Role Details: Primary Raspberry Pi 40-pin GPIO/power header for the HAT - Role: HAT Interface - Connector Type: Raspberry Pi HAT GPIO Header **Pins:** - 3.3v [pin 1] - 3.3v [pin 17] - 5v [pin 2] - 5v [pin 4] - DNC [pin 27] - DNC [pin 28] - Gnd [pin 20] - Gnd [pin 39] - Gnd [pin 34] - Gnd [pin 30] - Gnd [pin 25] - Gnd [pin 9] - Gnd [pin 6] - Gnd [pin 14] - GPIO_05 [pin 29] - GPIO_06 [pin 31] - GPIO_07 [pin 26] - GPIO_08 [pin 24] - GPIO_09 [pin 21] - GPIO_10 [pin 19] - GPIO_11 [pin 23] - GPIO_12 [pin 32] - GPIO_13 [pin 33] - GPIO_14 [pin 8] - GPIO_15 [pin 10] - GPIO_16 [pin 36] - GPIO_17 [pin 11] - GPIO_18 [pin 12] - GPIO_19 [pin 35] - GPIO_2 [pin 3] - GPIO_20 [pin 38] - GPIO_21 [pin 40] - GPIO_22 [pin 15] - GPIO_23 [pin 16] - GPIO_24 [pin 18] - GPIO_25 [pin 22] - GPIO_26 [pin 37] - GPIO_27 [pin 13] - GPIO_3 [pin 5] - GPIO_4 [pin 7] ### SW3 — [Push Button](https://www.flux.ai/jharwinbarrozo/push-button.md) - Datasheet URL: https://datasheet.lcsc.com/lcsc/1809271215_Omron-Electronics-B3FS-1050P_C231326.pdf - Manufacturer Name: OMRON - Part Type: Switch - Manufacturer Part Number: B3FS-1050P **Pins:** - P1 [pin 1] - P2 [pin 3] ### SW4 — [Push Button](https://www.flux.ai/jharwinbarrozo/push-button.md) - Datasheet URL: https://datasheet.lcsc.com/lcsc/1809271215_Omron-Electronics-B3FS-1050P_C231326.pdf - Manufacturer Name: OMRON - Part Type: Switch - Manufacturer Part Number: B3FS-1050P **Pins:** - P1 [pin 1] - P2 [pin 3] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/rishi0604/tense-sapphire-ppkpep-meter-raspberry-pi-5-hat](https://www.flux.ai/rishi0604/tense-sapphire-ppkpep-meter-raspberry-pi-5-hat).* --- *Generated from [https://www.flux.ai/rishi0604/tense-sapphire-ppkpep-meter-raspberry-pi-5-hat](https://www.flux.ai/rishi0604/tense-sapphire-ppkpep-meter-raspberry-pi-5-hat)*