diff --git a/generate_jst.py b/generate_jst.py
new file mode 100644
index 0000000..f10531e
--- /dev/null
+++ b/generate_jst.py
@@ -0,0 +1,148 @@
+import time
+import zipfile
+from pathlib import Path
+from tempfile import TemporaryDirectory
+from typing import Literal, Optional, Union
+
+import numpy as np
+import regex as re
+from selenium import webdriver
+from selenium.webdriver.support.select import By
+
+from fp_generator import INCH, Footprint
+
+dir_ = Path(__file__).parent
+
+PARTS = [
+    # JST-SH, Right angle
+    *[f"SM{i:02d}B-SRSS-TB" for i in range(2, 16)],
+    # JST-SH, Vertical
+    # *[f"BM{i:02d}B-SRSS-TB" for i in range(2, 16)],
+]
+
+
+def round2grid(val: float, direction: Optional[Literal["up", "down"]] = None, grid: float = 0.005 * INCH):
+    if direction == "up":
+        val = val + grid / 2
+    elif direction == "down":
+        val = val - grid / 2
+
+    return np.round(val / grid) * grid
+
+
+def download_step(part: Union[str, int], headless: bool = True) -> None:
+    print(part)
+    with TemporaryDirectory(prefix=str(dir_ / "tmp") + "/") as tmp:
+        tmp = Path(tmp)
+
+        chrome_options = webdriver.ChromeOptions()
+        chrome_options.add_experimental_option(
+            "prefs",
+            {"download.default_directory": str(tmp)},
+        )
+        if headless:
+            chrome_options.add_argument("--headless")
+
+        with webdriver.Chrome(
+            options=chrome_options,
+        ) as browser:
+            browser.get(
+                f"https://www.jst-mfg.com/product/index.php?type=10&series=231&doc=2&filename={part.upper()}.zip"
+            )
+            browser.implicitly_wait(10)
+            browser.find_element(by=By.ID, value="company").send_keys("N/A")
+            browser.find_element(by=By.ID, value="section").send_keys("N/A")
+            browser.find_element(by=By.ID, value="name").send_keys("Brendan Haines")
+            browser.find_element(by=By.ID, value="address").send_keys("7415 Spy Glass Ct")
+            browser.find_element(by=By.ID, value="tel").send_keys("(505) 738-6174")
+            browser.find_element(by=By.ID, value="email").send_keys("brendan.haines@gmail.com")
+            # browser.find_element(by=By.ID, value="url").send_keys("")
+            browser.find_element(by=By.XPATH, value="//input[@type='button' and @value='I agree']").click()
+
+            # wait for download to finish
+            while len(list((Path(tmp).glob("*.zip")))) == 0:
+                time.sleep(0.1)
+            # print(list((Path(tmp).glob("*.zip"))))
+
+        # unzip
+        with zipfile.ZipFile(tmp / f"{part.upper()}.zip") as zip:
+            zip.extractall(path=tmp)
+
+        # move
+        (Path(tmp) / f"{part.upper()}.STEP").rename(dir_ / "jst.pretty" / "3dshapes" / f"{part.upper()}.stp")
+
+
+def footprint(part: str, lib: Optional[Union[Path, str]] = None):
+    print(part)
+    if lib is None:
+        lib = dir_ / "jst.pretty"
+    lib = Path(lib)
+
+    if part.startswith("SM"):
+        # Right angle
+        match = re.match(r"SM(\d\d)B-SRSS-TB", part)
+        pins = int(match[1])
+
+        fp = Footprint(part, description=f"connector, JST-SH, 1x{pins:02f}, RA")
+        fp.add_text("reference", "REF**", (5.55 + (0.025 + 0.005) * INCH), 0, rotation=90, layer="F.SilkS")
+        fp.add_text("value", "VAL**", 4 * 0.025 * INCH, 0, rotation=90, layer="F.Fab")
+        fp.add_text("user", r"${REFERENCE}**", 2 * 0.025 * INCH, 0, rotation=90, layer="F.Fab")
+        a, b = {
+            2: (1, 4),
+            3: (2, 5),
+            4: (3, 6),
+            5: (4, 7),
+            6: (5, 8),
+            7: (6, 9),
+            8: (7, 10),
+            9: (8, 11),
+            10: (9, 12),
+            11: (10, 13),
+            12: (11, 14),
+            13: (12, 15),
+            14: (13, 16),
+            15: (14, 17),
+            20: (19, 22),
+        }[pins]
+        # fp.add_line((0.05 * INCH, -0.05 * INCH), (0.05 * INCH, 0.05 * INCH), layer="F.SilkS")
+        for pad in range(pins):
+            fp.add_pad(
+                pad + 1,
+                4 + (5.55 - 4) / 2,
+                -1.0 * (pins - 1) / 2 + 1.0 * pad,
+                size=(5.55 - 4, 0.6),
+                shape="rect",
+            )
+        # mechanical holes
+        for s in [1, -1]:
+            fp.add_pad(0, 1.8 / 2, s * (1.0 * (pins - 1) / 2 + 0.7 + 1.2 / 2), size=(1.8, 1.2), shape="rect")
+        fp.add_model(
+            lib / "3dshapes" / f"{part}.stp",
+            (4, 0, -0.3),
+            rotate=(-90, 0, 90),
+        )
+        fp.add_rect((0.2, -b / 2), (0.2 + 4.25, b / 2), layer="F.Fab")
+        for s in [1, -1]:
+            fp.add_line(
+                (0.190 * INCH, s * round2grid((a + 0.6) / 2 + 0.010 * INCH, "up")),
+                (0.190 * INCH, s * round2grid(b / 2 + 0.010 * INCH, "up")),
+                layer="F.SilkS",
+            )
+            fp.add_line(
+                (0.190 * INCH, s * round2grid(b / 2 + 0.010 * INCH, "up")),
+                (round2grid(1.8 + 0.010 * INCH), s * round2grid(b / 2 + 0.010 * INCH, "up")),
+                layer="F.SilkS",
+            )
+        fp.write(lib)
+    else:
+        raise NotImplementedError
+
+
+if __name__ == "__main__":
+    from multiprocessing import Pool
+
+    pool = Pool(10)
+    # pool.map(download_step, PARTS)
+    for part in PARTS:
+        footprint(part)
+    pool.close()