[LuxLibre](../../README.md) › [Lights](../README.md) › EDCO v0.2 # EDCO v0.2 **On this page:** [What changed from v0.1](#what-changed-from-v01) · [Specifications](#specifications) · [Light and runtime](#light-and-runtime-simulated) · [How it is built](#how-it-is-built) · [Electronics](#electronics-what-changes-from-v01) · [Cost](#cost-rough-estimate) · [Drawings and animations](#drawings-and-animations) · [What has been checked](#what-has-been-checked) · [Open points before the first order](#open-points-before-the-first-order) · [Files](#files) EDCO v0.2 makes the EDCO light brighter and gives it a more rugged look, in **two sizes**: | | EDCO-18 | EDCO-14 | |---|---|---| | Cell | one 18500 | one 14500 | | Body / head | Ø24 / Ø26 mm | Ø20 / Ø22 mm | | Length | 97.8 mm | 95.6 mm | Both run a Luminus **SST-40** LED behind a TIR optic. Charging, firmware updates and settings all go through a **USB-C port on the side of the head**, under a fluted **twist collar**. There is still no laser and no radio.  *Render made from the design files.* > **Status: concept (v0.2).** The housing of both sizes is modelled in CadQuery and checked for fits, walls > and interference. The firmware board headers exist, and the light output is simulated with the LuxLibre > simulator. The circuit boards are **not drawn yet**, and nothing has been built or measured. Every light > figure on this page is simulated. ## What changed from v0.1 The owner asked for these changes: * **About 2000 lm.** The SST-40 replaces the SST-20. Driving it near 6 A needs a cell that can deliver the current, so EDCO now comes in two sizes: the 18500 version gives full output, and the 14500 version keeps the slim body. * **USB-C on the side.** The socket now sits on the main board and looks down through a window in the side of the head. The collar turns over that window: with the collar's window over the port, the port is open; turned away, the port is covered and sealed. * **A more tactile look:** * a crenellated bezel with five cooling fins; * a fluted collar; * six milled flats along the body; * three grooves at the tail. * **A bigger button.** The stainless cap grows from Ø4.2 to Ø7.5 mm (EDCO-18) or Ø6.5 mm (EDCO-14). Its translucent membrane glows when lit, so the separate indicator dot is gone. |  |  | |---|---| | **Front.** Crenellated bezel, fins, the TIR optic. | **Port open.** The collar's window over the USB-C socket. | |  |  | | **Tail.** Grooves, flats and the two lanyard holes. | **Two sizes.** EDCO-18 (black) and EDCO-14 (clear anodised). | ## Specifications | Item | EDCO-18 | EDCO-14 | |---|---|---| | Size | Ø24 body, Ø26 head × 97.8 mm | Ø20 body, Ø22 head × 95.6 mm | | Aluminium parts (body, bezel, head insert, collar; from the CAD) | 45.1 g | 36.2 g | | LED | Luminus SST-40-W Gen 2, 6500 K, on a 20 mm copper DTP board | the same on a 16 mm board | | Optic | Carclo 10003 narrow spot TIR, Ø20 mm (87 %, about 17° with a 5 × 5 mm LED) | LEDiL FA10888 TINA-RS, Ø16.1 × 10.9 mm (14–17°; fit over the SST-40 dome to be checked) | | Turbo (simulated) | 5,700 mA: 2,022 lm at the LED and 1,759 lm out of the front with the LED at 85 °C. About 8 % more in the first seconds with a cool LED (about 1,900 lm out of the front) | 5,000 mA: 1,836 lm at the LED, 1,561 lm out of the front | | Throw (estimate) | about 18 kcd, 270 m (Carclo's 9.1 cd/lm with an XM-L2) | about 11 kcd, 210 m (scaled by aperture; no data published) | | Cell | Vapcell INR18500 K15: 1,500 mAh typical, 15 A, 18.2 × 50.0 mm | Vapcell INR14500 H10: 1,000 mAh typical, 10 A, 14.3 × 49.4 mm | | Runtime from turbo to the ANSI end point (simulated) | 99 min | 78 min | | Driver | MPS MP2145GD 6 A synchronous buck with 100 % duty mode, in the LuxLibre current loop (TLV333, 10 mΩ sense) | the same | | Cell protection | DW01A with a common-drain MOSFET path of about 15 mΩ: trips at about 9.3–12 A | the same | | USB-C | SHOU HAN TYPE-C 16PLT-H6.5 (LCSC C3151748), vertical, 6.5 mm, on the underside of the main board | the same | | Charging | TP4057 at about 500 mA (about 3 h) | about 2 h | | Button | Ø7.5 mm stainless cap, glowing membrane, Alps SKRKAEE020 | Ø6.5 mm cap | | Water | IPX8 is the target, not tested. Seals: the optic gasket, the face O-ring of the head insert, the button membrane, and the cord gasket round the port (sealed whenever the collar is turned away) | the same | | Firmware | LuxLibre, board [`edco-v02-18`](../../firmware/boards/edco-v02-18/board.h) | board [`edco-v02-14`](../../firmware/boards/edco-v02-14/board.h) | ## Light and runtime (simulated) These are LuxLibre simulator runs with each size's board header: 25 °C still air, a full cell and the default profile. Lumens are out of the front, with the LED at 85 °C. | | EDCO-18 | EDCO-14 | |---|---|---| | Turbo | 1,759 lm, full for 45 s (the turbo timer); 48 s with the timer off | 1,561 lm, full for 44 s | | High (1.8 A) | 686 lm for 281 s | 662 lm for 212 s | | Sustained (temperature regulator, `THM_LIMIT` 49 °C) | about 330–390 lm, body at most 47.5 °C | about 260–320 lm, body at most 47.7 °C | | Turbo from a half-full cell, at 30 s | 1,543 lm | 1,463 lm | | On a 35 °C day | full turbo for 23 s, about 200 lm sustained, body 48.4 °C | 21 s, about 150–200 lm, body 48.6 °C | | Runtime from turbo to the ANSI end point | 99 min | 78 min | | Modes (out of the front) | moon 3 mA (1 lm), low 27 lm, medium 155 lm, high 686 lm | moon 3 mA (1 lm), low 26 lm, medium 149 lm, high 662 lm | * **Burst length.** The SST-40 at 5.7 A turns about 14 W into heat. Even the 18500 body therefore holds full turbo for under a minute, as with any light of this size. * **What the bigger cell buys.** The 18500 brings mainly current and a bigger heat sink, not much more charge. The K15 holds 1,500 mAh, like the v0.1 14500. A 2,000 mAh 10 A 18500 (Vapcell N20) may exist but was not verified. ```sh cd firmware make sim BOARD=edco-v02-18 build/luxsim-edco-v02-18 --preset board --set TURBO_S=0 "2C W900000" make sim BOARD=edco-v02-14 build/luxsim-edco-v02-14 --preset board "2C W14000000" ``` ## How it is built  From the front to the tail: 1. **Bezel.** It is crenellated and has five cooling fins. It screws onto the band's external thread (M22 × 0.75 on EDCO-18, M18 × 0.75 on EDCO-14) and is locked with thread-locker. Its lip presses the optic onto a silicone gasket, and its inner shoulder clamps the head insert, metal on metal, against the band's front face. 2. **Head insert.** The LED holder. It has a cup for the optic and carries the SST-40 on its copper board, on a 2 mm floor that leads the heat into the body. A face O-ring on its rear face seals against the band. A key in a notch stops it turning while the bezel is tightened, so the LED wires never twist. 3. **Twist collar.** It turns freely between the bezel and the body shoulder. * **The seal:** a loop of Ø0.8 mm silicone cord, bonded into a 0.75 mm groove round the port window in the band. The collar's bore presses and wipes it, so the port is sealed whenever the collar's window is turned away. * **Why it is built this way:** the space between the collar and the band may get wet. Only the port window leads into the light, so one gasket round it is enough, with no O-rings needed on either side. 4. **Main board in a POM sled.** The board lies across the bore. * The vertical USB-C socket on its underside looks down through the port window. The sled backs the board, so it takes the force of a plug. * The tactile switch on its top side sits under the button's clear pin. * An RGB LED next to the switch lights the pin and the translucent membrane: the halo indicator. 5. **Cell.** Its + strip goes to the rear of the main board. The − strip runs forward along the bottom of the cell. 6. **Tail.** A closed end with three grooves and a lanyard hole through each corner. v0.2 has no tail board and no flex.  ### Assembly (once, for good) 1. **Bench-test the cartridge.** * Weld the strips to the cell. Solder the cell and the LED wires to the main board. * Test the cartridge on the bench and flash the firmware over USB-C. 2. **Insert the cartridge.** * Slide the cartridge into the tube with the socket facing the port window. The window shows when it is lined up. * Drop in the clear pin, the membrane, the cap and the button collar (press-fit with retaining compound). 3. **Fit the head.** * Bond the cord gasket into the band groove and grease it lightly with silicone grease. * Slide the collar on from the front. * Fit the head insert with its face O-ring, the LED board on paste, the optic and its gasket. * Screw on the bezel with medium-strength thread-locker. ## Electronics: what changes from v0.1 | v0.1 | v0.2 | |---|---| | TPS62095 4 A buck, 20 mΩ sense, VSET 2.2 k / 100 k | **MP2145GD** 6 A buck (QFN-12 2 × 3 mm, high-side limit 7.5–8.1 A, FB 0.6 V) with an inductor of about 0.47–1 µH (Isat ≥ 9 A, 4 × 4 mm) and a **10 mΩ** sense resistor. VSET 1.0 k / 53.6 k: 6,044 mA at full duty; the firmware never asks for more than 5,700 mA. Backup: TI TPS62480 (2 × 3 A phases). TI's TPS62866/9 do not fit: their output is set over I²C and stops at 3.35 V | | DW01A + SE8830A (trip about 5.4 A) | DW01A with a common-drain path of about 15 mΩ, for example AOS AOC4810, or two TI CSD17575Q3 (LCSC C529277) plus a 10 mΩ resistor. Trip about 9.3–12 A; about 0.5 W in the path at 6 A | | Waterproof socket on a tail board, 4-wire flex | vertical SHOU HAN TYPE-C 16PLT-H6.5 (C3151748) on the main board; CC resistors and ESD on the main board; no tail board, no flex | | Indicator LED and light pipe | RGB LED beside the switch, lighting the clear pin and membrane | | SST-20 Gen 2 on 10 mm, LISA3 optic | SST-40 Gen 2 on 20 mm / 16 mm copper DTP, Carclo 10003 / LEDiL TINA-RS | | ESP32-C3FH4, TP4057, RT9080, NTC | unchanged | ## Cost (rough estimate) There is no EDCO workbook yet. This is a rough estimate, all fees, shipping and VAT included: * **About the same as v0.1:** roughly 700–750 USD for one light and 230–250 USD each when five are made. * **Lower:** the tail board and the flex are gone. * **Higher:** a fourth turned part (the collar), larger parts with fins and flats, and the stronger driver and protection parts. The cord gasket costs a few euros. ## Drawings and animations |  |  | |---|---| | **Turning.** EDCO-18 with the collar closed: crenellated bezel, flats, the button, the tail grooves. | **Coming apart.** Bezel, optic, LED board, head insert, collar, button parts, main board, cell, body. | | [](cad/EDCO-18_body_drawing.pdf) | [](cad/EDCO-14_body_drawing.pdf) | |---|---| | **EDCO-18 body:** [PDF](cad/EDCO-18_body_drawing.pdf), [DXF](cad/EDCO-18_body_drawing.dxf) | **EDCO-14 body:** [PDF](cad/EDCO-14_body_drawing.pdf), [DXF](cad/EDCO-14_body_drawing.dxf) | The drawings are A3 sheets at 2:1, made from the same parameters as the STEP files by [hardware/tools/edco_drawings.py](../tools/edco_drawings.py). Each has the outline, a section, the end views and a feature table with tolerances, and every dimension on it is checked against the solid ([check report](../tools/edco_drawings_check.txt)). The animations are made by [hardware/tools/edco_anim.py](../tools/edco_anim.py). All of them are renders and drawings of the design: nothing has been built yet. ## What has been checked * **CAD interference:** no part overlaps a neighbour in either size. The checked pairs include body / head insert, bezel / insert, body / collar, bezel / collar, collar / port gasket, body / sled, sled / board, body / socket, sled / socket, body / button pin, sled / cell and bezel / optic. * **Walls, EDCO-18:** * 2.3 mm over the cell, 1.5 mm under the flats; * 0.84 mm at the thread root; * 1.3 mm in the band, 0.7 mm under the port gasket groove; * 0.65 mm under the button counterbore; * 1.2 mm in the bezel at its fins, 1.55 mm in the collar at its flutes. * **Walls, EDCO-14:** * 2.4 mm over the cell, 1.7 mm under the flats; * 0.94 mm at the thread root; * 1.4 mm in the band, 0.8 mm under the port gasket groove; * 0.85 mm under the button counterbore; * 0.8 mm in the bezel at its fins, 1.55 mm in the collar at its flutes. * **Below JLCCNC's recommended 0.8 mm (above their 0.5 mm minimum):** EDCO-18's button counterbore wall (0.65 mm), port gasket groove (0.7 mm) and thread run-out (0.79 mm). * **Fits:** * Main board: 18.3 mm wide (EDCO-18) / 14.3 mm (EDCO-14), with 0.34 mm to the bore. * Socket mouth: 4.6 / 5.1 mm below the collar surface, so the plug's overmould goes through the windows. * Thread engagement: 3.3 mm. * Cell radial room: 0.6 / 0.45 mm. * **Light and heat:** simulated, as above. All numbers are in [cad/edco_v02_interface.json](cad/edco_v02_interface.json), written by [tools/housing/edco_v02.py](tools/housing/edco_v02.py). ## Open points before the first order * **The collar seal is a new design.** No production light documents how its rotating port cover seals. Build one collar and band first and test them under water: closed, after many turns, and with grit. * **The optic heights.** The Carclo 20 mm optic's height depends on its holder (10–13.8 mm; 11.5 mm is drawn). Check the TINA-RS cavity over the SST-40's 3 mm dome. * **Throw.** The figures above are estimates from other LEDs' data. A smooth 20 mm reflector may throw further but needs more depth. * **Parts to confirm:** * MP2145GD availability (no LCSC number found yet); * the exact protection MOSFET and its resistance at a 3–4 V gate; * the socket's footprint. * **The 18500 cell.** The K15 (1,500 mAh, 15 A) is verified; a 2,000 mAh option is not. No EU shop seen with high-drain 18500 stock. * **Replacing the cell** ([BAT-2](../../docs/design-rules.md#bat-2)), as in v0.1: fine for your own light. From 18 February 2027, though, a light sold in the EU must let its user replace the cell. * **The boards, drawings, order files and a parts and cost workbook**, as for v0.1. ## Files | Path | What | |---|---| | [cad/](cad/) | for each size (`EDCO-18_*`, `EDCO-14_*`): body, bezel, head insert and collar as STEP (plain thread diameters), and the assembly STEP | | [cad/edco_v02_interface.json](cad/edco_v02_interface.json) | sizes, walls, fits, masses and the interference check of both sizes | | [cad/EDCO-18_body_drawing.pdf](cad/EDCO-18_body_drawing.pdf), [EDCO-14_body_drawing.pdf](cad/EDCO-14_body_drawing.pdf) (and .dxf, .png) | the body drawings (A3, 2:1) | | [tools/housing/edco_v02.py](tools/housing/edco_v02.py) | the CadQuery model (sizes in `SIZES`, common dimensions in class `P`): `python3 edco_v02.py ../../cad --size both` | | [tools/housing/edco_v02_render.py](tools/housing/edco_v02_render.py) | the renders: `xvfb-run -a python3 edco_v02_render.py ../../assets` (uses the FlashKa v0.7 renderer) | | [../tools/edco_drawings.py](../tools/edco_drawings.py), [../tools/edco_anim.py](../tools/edco_anim.py) | the drawings and the animations of all EDCO designs: `python3 hardware/tools/edco_drawings.py`, `xvfb-run -a python3 hardware/tools/edco_anim.py` (from the repository root) | | [../../firmware/boards/edco-v02-18/](../../firmware/boards/edco-v02-18/board.h), [edco-v02-14/](../../firmware/boards/edco-v02-14/board.h) | the firmware board headers, each with the thermal model for the simulator | Licences as for the rest of LuxLibre: hardware CERN-OHL-W-2.0, firmware and tools GPL-3.0-or-later, this page CC-BY-SA-4.0 ([LICENSING.md](../../LICENSING.md)). --- [← EDCO Mini](../edco-mini/README.md) · [All lights](../README.md) · [LuxLibre home](../../README.md) · [EDCO v0.1 →](../edco-v01/README.md)