BOM.md (821B)
1 # Bill of materials — one badge 2 3 | # | Part | Qty | Spec | 4 |---|---|---|---| 5 | 1 | DFRobot FireBeetle 2 ESP32-E (DFR0654) | 1 | ESP32-D0WD-V3, 4 MB flash, USB-C, onboard LiPo charger + JST-PH 2.0 | 6 | 2 | 2.42" OLED module | 1 | SSD1309, 128×64, I2C (address `0x3C`) | 7 | 3 | EEMB 103454 LiPo cell | 1 | 3.7 V, 2000 mAh, JST-PH 2.0 lead — check polarity against the board's B+/B− before plugging in | 8 | 4 | Twidec PBS-110 push button | 1 | 7 mm, momentary | 9 | 5 | Case — `hardware/cad/stl/badge_*_B_back.stl` + `badge_*_B_front.stl` | 1 set | PETG | 10 | 6 | Screw, M3 self-tapping | 4 | into the case's 2.5 mm pilot bosses | 11 | 7 | Hookup wire | — | OLED (4 wires) + button (2 wires) | 12 | 8 | Lanyard | 1 | optional; breakaway | 13 14 Accessories (optional, clip into the case openings): `hardware/cad/stl/accessories/`.