# Final 2.0 ## Description Engineer's workbench design. This contains a voltmeter that can measure from 0-4v. An ohm meter that can measure from 100-11000 ohms. A stable DC reference source that outputs 0-4v. A square wave that produces a +/- 5v wave with variable frequency. A sine wave with variable amplitude that varies from 0-1v up to 0-5v with variable frequencies from 1kHz-10kHz. ## Project Details - **Owner:** cdl98761 - **Created:** 4/16/2023 - **Last Updated:** 7/5/2024 - **Visibility:** Public ## Key Components ### 12 V — [DC Supply](https://www.flux.ai/jharwinbarrozo/dc-supply~35.md) - Voltage: 5V **Pins:** - ANODE - CATHODE ### 12nF — [Generic Capacitor](https://www.flux.ai/jharwinbarrozo/generic-capacitor~1d.md) - Package: SMD_0603_1608Metric - Part Type: Non-Polarized Capacitor **Pins:** - P1 [pin 1] - P2 [pin 2] ### 12nF — [Generic Capacitor](https://www.flux.ai/jharwinbarrozo/generic-capacitor~1d.md) - Part Type: Non-Polarized Capacitor - Package: SMD_0603_1608Metric **Pins:** - P1 [pin 1] - P2 [pin 2] ### 3nF — [Generic Capacitor](https://www.flux.ai/jharwinbarrozo/generic-capacitor~1d.md) - Package: SMD_0603_1608Metric - Part Type: Non-Polarized Capacitor **Pins:** - P1 [pin 1] - P2 [pin 2] ### 3nF — [Generic Capacitor](https://www.flux.ai/jharwinbarrozo/generic-capacitor~1d.md) - Package: SMD_0603_1608Metric - Part Type: Non-Polarized Capacitor **Pins:** - P1 [pin 1] - P2 [pin 2] ### D1 — [1N4148](https://www.flux.ai/adrian95/1n4148~mnh.md) - Part Type: Diode - Manufacturer Part Number: 1N4148 - Datasheet URL: https://www.onsemi.com/pdf/datasheet/1n914-d.pdf - Manufacturer Name: onsemi **Pins:** - anode - cathode ### D2 — [1N4148](https://www.flux.ai/adrian95/1n4148~mnh.md) - Manufacturer Name: onsemi - Datasheet URL: https://www.onsemi.com/pdf/datasheet/1n914-d.pdf - Part Type: Diode - Manufacturer Part Number: 1N4148 **Pins:** - anode - cathode ### D3 — [1N4148](https://www.flux.ai/adrian95/1n4148~mnh.md) - Part Type: Diode - Manufacturer Part Number: 1N4148 - Datasheet URL: https://www.onsemi.com/pdf/datasheet/1n914-d.pdf - Manufacturer Name: onsemi **Pins:** - anode - cathode ### D4 — [1N4148](https://www.flux.ai/adrian95/1n4148~mnh.md) - Part Type: Diode - Manufacturer Part Number: 1N4148 - Manufacturer Name: onsemi - Datasheet URL: https://www.onsemi.com/pdf/datasheet/1n914-d.pdf **Pins:** - anode - cathode ### DC Reference — [2-Position Screw Terminal](https://www.flux.ai/corynrobinson/2-position-screw-terminal~s4.md) - Part Type: Connector - Datasheet URL: https://www.we-online.com/katalog/datasheet/691137710002.pdf - Manufacturer Name: Würth Elektrik - Manufacturer Part Number: 691137710002 **Pins:** - P1 [pin 1] - P2 [pin 2] ### Frequency Read — [2-Position Screw Terminal](https://www.flux.ai/corynrobinson/2-position-screw-terminal~s4.md) - Manufacturer Part Number: 691137710002 - Manufacturer Name: Würth Elektrik - Part Type: Connector - Datasheet URL: https://www.we-online.com/katalog/datasheet/691137710002.pdf **Pins:** - P1 [pin 1] - P2 [pin 2] ### LM324N — LM324N **Pins:** - IN- [pin 6] - IN- [pin 2] - IN- [pin 9] - IN- [pin 13] - IN+ [pin 5] - IN+ [pin 12] - IN+ [pin 10] - IN+ [pin 3] - OUT [pin 8] - OUT [pin 14] - OUT [pin 1] - OUT [pin 7] - V- [pin 11] - V+ [pin 4] ### LM339 — LM339N **Pins:** - 1IN- [pin 6] - 1IN+ [pin 7] - 1OUT [pin 1] - 2IN- [pin 4] - 2IN+ [pin 5] - 2OUT [pin 2] - 3IN- [pin 8] - 3IN+ [pin 9] - 4IN- [pin 10] - 4IN+ [pin 11] - GND [pin 12] - OUT3 [pin 14] - OUT4 [pin 13] - VCC [pin 3] ### MCP4131 — MCP4131-103E/P **Pins:** - ~CS [pin 1] - P0A [pin 5] - P0B [pin 7] - P0W [pin 6] - SCK [pin 2] - SDI/SDO [pin 3] - VDD [pin 8] - VSS [pin 4] ### MCP4231 — MCP4231 **Pins:** - *CS [pin 1] - *SHDN [pin 12] - NC [pin 11] - P0A [pin 8] - P0B [pin 10] - P0W [pin 9] - P1A [pin 7] - P1B [pin 5] - P1W [pin 6] - SCK [pin 2] - SDI [pin 3] - SDO [pin 13] - VDD [pin 14] - VSS [pin 4] ### MCP4231 — MCP4231 **Pins:** - *CS [pin 1] - *SHDN [pin 12] - NC [pin 11] - P0A [pin 8] - P0B [pin 10] - P0W [pin 9] - P1A [pin 7] - P1B [pin 5] - P1W [pin 6] - SCK [pin 2] - SDI [pin 3] - SDO [pin 13] - VDD [pin 14] - VSS [pin 4] ### Ohm meter — [2-Position Screw Terminal](https://www.flux.ai/corynrobinson/2-position-screw-terminal~s4.md) - Manufacturer Name: Würth Elektrik - Manufacturer Part Number: 691137710002 - Part Type: Connector - Datasheet URL: https://www.we-online.com/katalog/datasheet/691137710002.pdf **Pins:** - P1 [pin 1] - P2 [pin 2] ### Q1 — [2N3906](https://www.flux.ai/jecstronic/2n3906~auy.md) - Datasheet URL: https://www.nteinc.com/specs/original/2N3905_06.pdf - Manufacturer Name: NTE Electronics, Inc - Part Type: Transistor - Manufacturer Part Number: 2N3906 **Pins:** - B [pin 2] - C [pin 3] - E [pin 1] ### Q2 — [2N3904](https://www.flux.ai/jecstronic/2n3904~sg3.md) - Datasheet URL: https://www.nteinc.com/specs/original/2N3904.pdf - Manufacturer Part Number: 2N3904 - Manufacturer Name: NTE Electronics, Inc - Part Type: Transistor **Pins:** - B [pin 2] - C [pin 3] - E [pin 1] ### Raspberry pi 4 — [Raspberry Pi 2 3 4 Model B](https://www.flux.ai/vasy_skral/raspberry-pi-2-3-4-5-model-b~pak.md) - Part Type: Connector **Pins:** - ~CE0~/GPIO8 [pin 24] - ~CE1~/GPIO7 [pin 26] - 3V3 [pin 1] - 3V3 [pin 17] - 5V [pin 4] - 5V [pin 2] - GCLK0/GPIO4 [pin 7] - GCLK1/GPIO5 [pin 29] - GCLK2/GPIO6 [pin 31] - GND [pin 34] - GND [pin 9] - GND [pin 25] - GND [pin 30] - GND [pin 6] - GND [pin 20] - GND [pin 14] - GND [pin 39] - GPIO14/TXD [pin 8] - GPIO15/RXD [pin 10] - GPIO16 [pin 36] - GPIO17 [pin 11] - GPIO18/PWM0 [pin 12] - GPIO19/MISO1 [pin 35] - GPIO20/MOSI1 [pin 38] - GPIO21/SCLK1 [pin 40] - GPIO22 [pin 15] - GPIO23 [pin 16] - GPIO24 [pin 18] - GPIO25 [pin 22] - GPIO26 [pin 37] - GPIO27 [pin 13] - ID_SC/GPIO1 [pin 28] - ID_SD/GPIO0 [pin 27] - MISO0/GPIO9 [pin 21] - MOSI0/GPIO10 [pin 19] - PWM0/GPIO12 [pin 32] - PWM1/GPIO13 [pin 33] - SCL/GPIO3 [pin 5] - SCLK0/GPIO11 [pin 23] - SDA/GPIO2 [pin 3] ### Square out, Sine out — [2-Position Screw Terminal](https://www.flux.ai/corynrobinson/2-position-screw-terminal~s4.md) - Manufacturer Name: Würth Elektrik - Manufacturer Part Number: 691137710002 - Part Type: Connector - Datasheet URL: https://www.we-online.com/katalog/datasheet/691137710002.pdf **Pins:** - P1 [pin 1] - P2 [pin 2] ### TL084 — TL084BCN **Pins:** - 1IN- [pin 2] - 1IN+ [pin 3] - 1OUT [pin 1] - 2IN- [pin 6] - 2IN+ [pin 5] - 2OUT [pin 7] - 3IN- [pin 9] - 3IN+ [pin 10] - 3OUT [pin 8] - 4IN- [pin 13] - 4IN+ [pin 12] - 4OUT [pin 14] - VCC- [pin 11] - VCC+ [pin 4] ### Voltmeter — [2-Position Screw Terminal](https://www.flux.ai/corynrobinson/2-position-screw-terminal~s4.md) - Part Type: Connector - Datasheet URL: https://www.we-online.com/katalog/datasheet/691137710002.pdf - Manufacturer Name: Würth Elektrik - Manufacturer Part Number: 691137710002 **Pins:** - P1 [pin 1] - P2 [pin 2] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/cdl98761/final-2p0~s8](https://www.flux.ai/cdl98761/final-2p0~s8).* --- *Generated from [https://www.flux.ai/cdl98761/final-2p0~s8](https://www.flux.ai/cdl98761/final-2p0~s8)*