66471934af
Knowledge base of ~80+ markdown files across 14 domains (00-13), Logseq graph, hardware design files (KiCAD), infrastructure configs, and talas-wiki static site. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
334 lines
13 KiB
Python
334 lines
13 KiB
Python
#!/usr/bin/env python3
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"""
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Generate PDF 1: Talas Microphone — Hardware Evidence
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For NGI Zero Commons Fund application attachment.
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"""
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from fpdf import FPDF
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from PIL import Image
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import os
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BASE = "/home/senke/Documents/TG__Talas_Group"
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ALICE = f"{BASE}/02_PRODUITS_PHYSIQUES/Microphone/Conception/AliceOPA"
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OUT = f"{BASE}/09_MODELE_ECONOMIQUE/Subventions/talas-microphone-hardware.pdf"
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FONT_DIR = "/usr/share/fonts/liberation-sans-fonts"
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class TalasPDF(FPDF):
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def __init__(self):
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super().__init__()
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self.add_font("Sans", "", f"{FONT_DIR}/LiberationSans-Regular.ttf")
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self.add_font("Sans", "B", f"{FONT_DIR}/LiberationSans-Bold.ttf")
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self.add_font("Sans", "I", f"{FONT_DIR}/LiberationSans-Italic.ttf")
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self.add_font("Sans", "BI", f"{FONT_DIR}/LiberationSans-BoldItalic.ttf")
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def header(self):
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self.set_font("Sans", "B", 9)
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self.set_text_color(100, 100, 100)
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self.cell(0, 5, "Talas — NGI Zero Commons Fund Application — Attachment 1", align="R")
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self.ln(8)
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def footer(self):
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self.set_y(-15)
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self.set_font("Sans", "I", 8)
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self.set_text_color(150, 150, 150)
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self.cell(0, 10, f"Page {self.page_no()}/{{nb}}", align="C")
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def section_title(self, title):
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self.set_font("Sans", "B", 13)
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self.set_text_color(30, 30, 30)
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self.cell(0, 10, title, new_x="LMARGIN", new_y="NEXT")
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self.set_draw_color(60, 60, 60)
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self.line(self.l_margin, self.get_y(), self.w - self.r_margin, self.get_y())
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self.ln(4)
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def body_text(self, text):
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self.set_font("Sans", "", 10)
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self.set_text_color(40, 40, 40)
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self.multi_cell(0, 5, text)
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self.ln(2)
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def label_value(self, label, value):
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self.set_font("Sans", "B", 10)
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self.set_text_color(40, 40, 40)
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self.cell(55, 6, label)
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self.set_font("Sans", "", 10)
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self.cell(0, 6, value, new_x="LMARGIN", new_y="NEXT")
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def add_image_centered(self, path, max_w=170, max_h=100, caption=None):
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if not os.path.exists(path):
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self.body_text(f"[Image not found: {os.path.basename(path)}]")
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return
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is_pdf = path.lower().endswith(".pdf")
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if is_pdf:
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# For PDF files, just use a fixed width and let fpdf2 handle it
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w_mm = min(max_w, 170)
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x = (self.w - w_mm) / 2
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if self.get_y() + max_h + 15 > self.h - 20:
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self.add_page()
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self.image(path, x=x, w=w_mm)
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else:
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img = Image.open(path)
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w_px, h_px = img.size
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# Calculate dimensions to fit within max bounds
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ratio = min(max_w / w_px, max_h / h_px)
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w_mm = w_px * ratio
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h_mm = h_px * ratio
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x = (self.w - w_mm) / 2
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# Check if we need a new page
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if self.get_y() + h_mm + 15 > self.h - 20:
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self.add_page()
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self.image(path, x=x, w=w_mm)
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if caption:
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self.set_font("Sans", "I", 8)
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self.set_text_color(100, 100, 100)
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self.cell(0, 5, caption, align="C", new_x="LMARGIN", new_y="NEXT")
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self.ln(3)
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def main():
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pdf = TalasPDF()
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pdf.alias_nb_pages()
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pdf.set_auto_page_break(auto=True, margin=20)
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# =========================================================
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# PAGE 1 — Title + Overview + PCB Photos
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# =========================================================
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pdf.add_page()
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# Title
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pdf.set_font("Sans", "B", 20)
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pdf.set_text_color(20, 20, 20)
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pdf.cell(0, 12, "Talas One — Open Hardware Condenser Microphone", align="C",
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new_x="LMARGIN", new_y="NEXT")
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pdf.set_font("Sans", "", 11)
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pdf.set_text_color(80, 80, 80)
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pdf.cell(0, 7, "Hardware Evidence — March 2026", align="C",
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new_x="LMARGIN", new_y="NEXT")
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pdf.ln(6)
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# Project summary
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pdf.section_title("1. Project Overview")
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pdf.body_text(
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"Talas One is an open-hardware large-diaphragm condenser microphone designed for "
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"independent musicians, podcasters, and makers. The design uses an OPA1642 low-noise "
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"operational amplifier in a balanced output configuration, powered by standard 48V "
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"phantom power via XLR 5-pin connector. The body is machined aluminum."
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)
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pdf.body_text(
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"All hardware designs are published under CERN-OHL-W-2.0. The companion software "
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"platform (Veza) is licensed under AGPL-3.0."
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)
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# Specs table
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pdf.section_title("2. Technical Specifications")
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specs = [
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("Type:", "Large-diaphragm condenser"),
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("Preamp IC:", "OPA1642 (Texas Instruments) — dual low-noise JFET op-amp"),
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("Output:", "Balanced (differential, via IC1A + IC1B)"),
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("Power:", "48V phantom power"),
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("Connector:", "XLR 5-pin"),
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("Body:", "Machined aluminum"),
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("PCB design tool:", "KiCAD 8"),
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("PCB count:", "2 boards (preamp + hex inverter / DC-DC)"),
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("License:", "CERN-OHL-W-2.0"),
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("Status:", "Functional prototype assembled"),
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]
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for label, value in specs:
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pdf.label_value(label, value)
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pdf.ln(4)
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# PCB photos
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pdf.section_title("3. Fabricated PCBs")
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pdf.body_text(
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"Custom PCBs fabricated by PCBWay. Two revisions exist in the design history "
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"(14 retro-backups from January to February 2025, showing iterative refinement)."
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)
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# Dual channel front + back side by side
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front_path = f"{ALICE}/front.jpg"
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back_path = f"{ALICE}/back.jpg"
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if os.path.exists(front_path) and os.path.exists(back_path):
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y_start = pdf.get_y()
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half_w = 60
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# front
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pdf.image(front_path, x=12, y=y_start, w=half_w)
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# back
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pdf.image(back_path, x=105, y=y_start, w=half_w)
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# Get height of tallest image
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front_img = Image.open(front_path)
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ratio_f = half_w / front_img.size[0]
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h_f = front_img.size[1] * ratio_f
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pdf.set_y(y_start + h_f + 2)
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pdf.set_font("Sans", "I", 8)
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pdf.set_text_color(100, 100, 100)
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pdf.cell(95, 5, "OPA Alice Dual Channel v1.0 — Front", align="C")
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pdf.cell(95, 5, "OPA Alice Dual Channel v1.0 — Back (traces)", align="C",
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new_x="LMARGIN", new_y="NEXT")
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pdf.ln(3)
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# Single channel (red board)
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pdf.body_text("Single-channel variant (v1.0) — compact version for mono microphone:")
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single_front = f"{ALICE}/single_front.jpg"
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single_back = f"{ALICE}/single_back.jpg"
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if os.path.exists(single_front) and os.path.exists(single_back):
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y_start = pdf.get_y()
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half_w = 42
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pdf.image(single_front, x=25, y=y_start, w=half_w)
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pdf.image(single_back, x=115, y=y_start, w=half_w)
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s_img = Image.open(single_front)
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ratio_s = half_w / s_img.size[0]
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h_s = s_img.size[1] * ratio_s
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pdf.set_y(y_start + h_s + 2)
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pdf.set_font("Sans", "I", 8)
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pdf.set_text_color(100, 100, 100)
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pdf.cell(95, 5, "Single channel — Front", align="C")
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pdf.cell(95, 5, "Single channel — Back", align="C",
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new_x="LMARGIN", new_y="NEXT")
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pdf.ln(5)
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# =========================================================
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# Schematics (continues naturally, no forced page break)
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# =========================================================
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pdf.section_title("4. Circuit Schematics")
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pdf.body_text(
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"Preamp circuit: OPA1642 dual JFET op-amp in balanced configuration. "
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"IC1A handles the capsule signal (1G\u03A9 bias resistor R11), IC1B provides "
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"the differential output. Phantom power filtering via R1/R2 (47\u03A9), "
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"Zener voltage regulation (D1/D2/D3), and decoupling capacitors (C1-C7)."
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)
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pdf.add_image_centered(
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f"{ALICE}/AliceOPA_single_channel_schematic_export.png",
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max_w=175, max_h=110,
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caption="Fig. 1 -- OPA Alice single-channel preamp schematic (KiCAD export)"
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)
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pdf.ln(3)
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pdf.body_text(
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"Full condenser microphone signal path — from capsule to XLR output, "
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"showing the complete connection diagram:"
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)
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pdf.add_image_centered(
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f"{ALICE}/full_cond.png",
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max_w=120, max_h=80,
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caption="Fig. 2 — Complete condenser microphone wiring diagram"
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)
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# =========================================================
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# Hex inverter + BOM + What grant funds (natural flow)
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# =========================================================
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pdf.body_text(
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"Hex inverter DC-DC converter board — provides bias voltage for the "
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"condenser capsule using a CMOS hex inverter as voltage multiplier:"
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)
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pdf.add_image_centered(
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f"{ALICE}/hex_sch.png",
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max_w=170, max_h=70,
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caption="Fig. 3 — Hex inverter DC-DC converter schematic"
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)
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pdf.ln(2)
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# Assembled board photo
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pdf.body_text("Assembled dual-channel board with components populated:")
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pdf.add_image_centered(
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f"{ALICE}/opa_alice_3.png",
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max_w=170, max_h=65,
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caption="Fig. 4 — Assembled OPA Alice boards (dual channel, components populated)"
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)
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pdf.ln(2)
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pdf.section_title("5. Bill of Materials (Summary)")
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pdf.body_text(
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"Complete BOM maintained as a structured spreadsheet (inventaires_composants_bom_origin_project.ods) "
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"with part numbers, quantities, supplier references, and pricing. Key components:"
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)
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bom_items = [
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("OPA1642AIDR", "Dual JFET op-amp (TI)", "SOIC-8", "Mouser/Farnell"),
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("TZX12D-TR", "12V Zener diode (Vishay)", "SOD-123", "Mouser"),
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("TZX6V2D-TR", "6.2V Zener diode (Vishay)", "SOD-123", "Mouser"),
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("47uF/63V", "Electrolytic capacitor", "Radial", "Mouser/Farnell"),
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("47uF/50V", "Electrolytic capacitor", "Radial", "Mouser/Farnell"),
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("0.1uF/63V", "Film capacitor (Wima MKS)", "Radial", "Mouser"),
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("22nF/50V", "Ceramic capacitor (Vishay)", "Radial", "Mouser"),
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("1G\u03A9", "Bias resistor", "Axial", "Mouser"),
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("47\u03A9, 2K2, 47K, 200R", "Signal path resistors", "Various", "Mouser/Farnell"),
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]
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# Table header
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pdf.set_font("Sans", "B", 8)
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pdf.set_fill_color(240, 240, 240)
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pdf.cell(35, 6, "Part", border=1, fill=True)
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pdf.cell(50, 6, "Description", border=1, fill=True)
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pdf.cell(25, 6, "Package", border=1, fill=True)
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pdf.cell(40, 6, "Sourcing", border=1, fill=True, new_x="LMARGIN", new_y="NEXT")
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pdf.set_font("Sans", "", 8)
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for part, desc, pkg, src in bom_items:
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pdf.cell(35, 5, part, border=1)
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pdf.cell(50, 5, desc, border=1)
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pdf.cell(25, 5, pkg, border=1)
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pdf.cell(40, 5, src, border=1, new_x="LMARGIN", new_y="NEXT")
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pdf.ln(3)
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# =========================================================
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# What the grant funds
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# =========================================================
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pdf.section_title("6. What This Grant Funds")
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pdf.body_text(
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"The prototype is functional but not yet reproducible as an open commons. "
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"This grant funds the missing steps:"
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)
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steps = [
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("DONE", "Circuit design (OPA1642 preamp, hex inverter DC-DC)"),
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("DONE", "KiCAD schematics and PCB layout (2 boards)"),
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("DONE", "PCB fabrication and assembly"),
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("DONE", "Component sourcing with BOM documentation"),
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("DONE", "Functional prototype verification"),
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("GRANT", "Professional acoustic measurements (freq response, SNR, THD, SPL)"),
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("GRANT", "Open-source calibration toolkit (Rust, FFT-based)"),
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("GRANT", "Cleaned schematics + Gerber files for public release"),
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("GRANT", "Step-by-step assembly guide with photos"),
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("GRANT", "Reproducibility validation (independent test builds)"),
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("GRANT", "OSHWA registration"),
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]
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for status, desc in steps:
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if status == "DONE":
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pdf.set_font("Sans", "B", 9)
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pdf.set_text_color(40, 140, 40)
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pdf.cell(14, 5, "[DONE]")
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else:
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pdf.set_font("Sans", "B", 9)
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pdf.set_text_color(180, 100, 20)
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pdf.cell(14, 5, "[GRANT]")
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pdf.set_font("Sans", "", 9)
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pdf.set_text_color(40, 40, 40)
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pdf.cell(0, 5, desc, new_x="LMARGIN", new_y="NEXT")
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pdf.ln(2)
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pdf.set_font("Sans", "I", 8)
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pdf.set_text_color(100, 100, 100)
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pdf.multi_cell(0, 4,
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"Design history: 14 versioned KiCAD backups (Jan 11 - Feb 23, 2025) show iterative "
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"refinement. Component datasheets archived for all critical parts."
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)
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# =========================================================
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# Output
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# =========================================================
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pdf.output(OUT)
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print(f"PDF generated: {OUT}")
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print(f"Pages: {pdf.pages_count}")
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if __name__ == "__main__":
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main()
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