# Wittering Amaranth Esper Photo Analyser ## Description ATMEGA328-PU (U1) Setup Power Supply Connections: Connect U1:VCC to U2:5V@1 (5V power supply). Connect U1:GND to U2:GND@1 (Ground). Connect U1:AVCC to U2:5V@2 (Analog Power Supply for better ADC performance). Multiple GND pins (U2:GND@1, U2:GND@2, U2:GND@3, U2:GND@4) should all be connected to a common ground plane for stability. Serial Communication for Debugging: Connect U1:PD0 (RX) to U6:TXD. Connect U1:PD1 (TX) to U6:RXD. These connections enable serial communication between the microcontroller (ATmega328) and the USB-Serial adapter (CH340N) for programming and debugging. Sensor Data Acquisition: Given the components, the MLX90614ESF-ACC-000-SP (U4) is an infrared temperature sensor that could be used for vital detection. It uses an I 2 2 C interface. Connect U1:PC4 (SDA) to U4:PWM_SDA. Connect U1:PC5 (SCL) to U4:SCL_Vz. This allows the ATmega328 to communicate with the MLX90614ESF infrared temperature sensor. Additional Considerations: An analog-to-digital converter (ADC) or a specialized RF module designed for UWB radar applications would be necessary to capture and process radar signals for detecting human vitals through walls. The MAX270CWP+ (U3) could be used for audio signal processing but may not directly apply to UWB radar signal processing. Power Supply to Other Components Connect U6:VCC to U2:5V@1. Connect U4:VDD to U2:5V@2. Ensure all components' ground pins are connected to the common ground plane (U2:GND@1, GND@2, GND@3, GND@4) ## Project Details - **Owner:** pawandeep - **Created:** 5/2/2024 - **Last Updated:** 5/2/2024 - **Visibility:** Public ## Key Components ### U1 — [ATMEGA328-PU](https://www.flux.ai/adrian95/atmega328-pu~4s7.md) - Manufacturer Name: Microchip - Part Type: Microcontroller - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: ATMEGA328-PU - Datasheet URL: https://ww1.microchip.com/downloads/en/DeviceDoc/ATmega48A-PA-88A-PA-168A-PA-328-P-DS-DS40002061B.pdf **Pins:** - ~RESET~/PC6 [pin 1] - AREF [pin 21] - AVCC [pin 20] - GND [pin 8] - GND [pin 22] - PB0 [pin 14] - PB1 [pin 15] - PB2 [pin 16] - PB3 [pin 17] - PB4 [pin 18] - PB5 [pin 19] - PC0 [pin 23] - PC1 [pin 24] - PC2 [pin 25] - PC3 [pin 26] - PC4 [pin 27] - PC5 [pin 28] - PD0 [pin 2] - PD1 [pin 3] - PD2 [pin 4] - PD3 [pin 5] - PD4 [pin 6] - PD5 [pin 11] - PD6 [pin 12] - PD7 [pin 13] - VCC [pin 7] - XTAL1/PB6 [pin 9] - XTAL2/PB7 [pin 10] ### U2 — [HB100](https://www.flux.ai/amirgagarin/hb100~xl.md) - Part Type: Sensor **Pins:** - 5V@1 - 5V@2 - GND@1 - GND@2 - GND@3 - GND@4 - IF@1 - IF@2 ### U3 — [MAX270CWP+](https://www.flux.ai/adrian95/max270cwpplus~h43.md) - Manufacturer Part Number: MAX270CWP+ - Manufacturer Name: Analog Devices Inc./Maxim Integrated - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Integrated Circuit - Datasheet URL: https://www.analog.com/media/en/technical-documentation/data-sheets/max270-max271.pdf **Pins:** - ~CS [pin 11] - ~SHDN [pin 4] - ~WR [pin 10] - A0 [pin 12] - D0 [pin 13] - D1 [pin 14] - D2 [pin 15] - D3 [pin 16] - D4 [pin 17] - D5 [pin 18] - D6 [pin 19] - GND [pin 9] - INA [pin 5] - INB [pin 7] - OPIN [pin 20] - OPOUT [pin 1] - OUTA [pin 3] - OUTB [pin 8] - V- [pin 6] - V+ [pin 2] ### U4 — [MLX90614ESF-ACC-000-SP](https://www.flux.ai/jecstronic/mlx90614esf-acc-000-sp~si.md) - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: MLX90614ESF-ACC-000-SP - Part Type: Sensor - Datasheet URL: https://media.melexis.com/-/media/files/documents/datasheets/MLX90614-datasheet-melexis.pdf - Manufacturer Name: Melexis Technologies NV **Pins:** - PWM_SDA [pin 2] - SCL_Vz [pin 1] - VDD [pin 3] - VSS [pin 4] ### U6 — [CH340N](https://www.flux.ai/iuriboard/ch340n~vs.md) - Datasheet URL: https://www.lcsc.com/datasheet/lcsc_datasheet_2403131103_WCH-Jiangsu-Qin-Heng-CH340K_C18208922.pdf - Manufacturer Part Number: CH340N - Part Type: Integrated Circuit - Manufacturer Name: WCH **Pins:** - GND [pin 3] - RTS [pin 4] - RXD [pin 7] - TXD [pin 6] - UD- [pin 2] - UD+ [pin 1] - V3 [pin 8] - VCC [pin 5] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/pawandeep/wittering-amaranth-esper-photo-analyser~8e](https://www.flux.ai/pawandeep/wittering-amaranth-esper-photo-analyser~8e).* --- *Generated from [https://www.flux.ai/pawandeep/wittering-amaranth-esper-photo-analyser~8e](https://www.flux.ai/pawandeep/wittering-amaranth-esper-photo-analyser~8e)*