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Project/rares.banila (#1349)
* Add project for rares.banila * Attempt to fix svg file fail * Added Hardware Schematics as .svg * Changed schematics from .svg to .webp * Add software section to documentation & update the progress log * Added pictures to documentation --------- Co-authored-by: Irina Bradu <72762129+irina-b-dev@users.noreply.github.com>
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website/versioned_docs/version-acs_cc/project/2026/rares.banila/index.md

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@@ -48,11 +48,17 @@ Created the software for reading the amplified signals using the ADC, processing
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### Week 19 - 25 May
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Created mounts/stands for each hardware component.
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## Hardware
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The hardware features a custom Analog Front-End (AFE) bridging the 24GHz K-LC7 sensor and the STM32. Because the raw radar signals are in the microvolt range, the AFE utilizes LMV772 low-noise op-amps in a two-stage active amplifier configuration.
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By placing precision passives (1% resistors and C0G capacitors) in the negative feedback loops, the circuit forms an active low-pass filter. This actively suppresses high-frequency environmental noise while applying a massive 73 dB (~4,467x) voltage gain, boosting microscopic reflections to a readable 0–3.3V range. To guarantee signal integrity, an LT1763 ultra-low-noise LDO provides clean 3.3V power, driving a voltage divider that establishes a 1.65V virtual ground. This biases the op-amps so the AC radar waves can swing symmetrically without clipping above 3.3V and below GND.
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![Frontend](./images/frontend.webp)
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![Topdown-view](./images/topdown-view.webp)
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![Front-view](./images/front-view.webp)
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### Schematics
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![Schematics](./images/schematics.webp)

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