# Digital Thermometer with latch power switch ## Description Welcome to your new project. Imagine what you can build here. ## Project Details - **Owner:** hdelien - **Created:** 4/29/2022 - **Last Updated:** 5/6/2022 - **Visibility:** Public - **Stars:** 1 ## Key Components ### BT1 — Multi Cell Battery - Max Voltage per cell: 1.5V - Number of Cell: 4 **Pins:** - ANODE - CATHODE ### D1 — [LED](https://www.flux.ai/jharwinbarrozo/led-tht~gr.md) - Series Resistance: 0.42Ω - Emission Coefficient: 3.73 - Saturation Current: 93.2e-12A - Forward Voltage: 1.70 - Breakdown Voltage: 0V **Pins:** - A - K ### Nano — [Arduino Nano](https://www.flux.ai/jharwinbarrozo/90272c40-e3d2-6ac1-7ed7-df6a2e64ab3a~71d.md) - Part Type: Microcontroller **Pins:** - 3V3 - 5V - 5V - A0 - A1 - A2 - A3 - A4 / SDA - A5 / SCL - A6 - A7 - D0 / TX - D1 / RX - D10 - D11 / MOSI - D12 / MISO - D13 / SCK - D2 - D3 - D4 - D5 - D6 - D7 - D8 - D9 - GND - GND - GND - MISO - MOSI - REF - RESET - RESET - RST - SCK - VIN ### Q3 — [S8050-JH](https://www.flux.ai/jharwinbarrozo/s8050-jh~k9s.md) - Manufacturer Part Number: S8050 - Beta / hFe: 300 **Pins:** - B - C - E ### Q4 — [S8050-JH](https://www.flux.ai/jharwinbarrozo/s8050-jh~k9s.md) - Manufacturer Part Number: S8050 - Beta / hFe: 300 **Pins:** - B - C - E ### SW1 — [Push Button](https://www.flux.ai/jharwinbarrozo/push-button~eqk.md) - Manufacturer Name: OMRON - Manufacturer Part Number: B3FS-1050P - Datasheet URL: https://datasheet.lcsc.com/lcsc/1809271215_Omron-Electronics-B3FS-1050P_C231326.pdf - Part Type: Switch **Pins:** - P1 - P2 ### U1 — [PC81710NIP1B](https://www.flux.ai/usairemalamgeer/pc81710nip1b~29.md) - Manufacturer Name: Sony - Part Type: Integrated Circuit - Datasheet URL: http://www.socle-tech.com/doc/IC%20Channel%20Product/Optoelectronic%20Components/Photocoupler/PC8171_NIP1B_ED-16P023.pdf - Manufacturer Part Number: PC81710NIP1B **Pins:** - A - C - E - K *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/hdelien/digital-thermometer-with-latch-power-switch~v2](https://www.flux.ai/hdelien/digital-thermometer-with-latch-power-switch~v2).* --- *Generated from [https://www.flux.ai/hdelien/digital-thermometer-with-latch-power-switch~v2](https://www.flux.ai/hdelien/digital-thermometer-with-latch-power-switch~v2)*