The base circuit (ESP32, DFPlayer Mini, resistors, capacitor, headers, connectors) is exactly the same as Pegasus / SG-1 (Basic) / Tollan / Orlin. This gate runs on its own dedicated SG-1 Motorized PCB though โ not the standard V1/V2/V3 board โ because it also needs to drive the NEMA17 that physically spins the inner glyph ring. That means three extra parts on top of the base list: a stepper motor, a stepper driver, and a buck converter, plus a 12V power supply instead of USB-C. See the full tutorial for wiring and calibration.
โ ๏ธ Get the ESP32-WROOM-32D with an external antenna and 39 pins total โ plenty of similar-looking ESP32 boards on AliExpress/Amazon have a different pinout or a PCB-trace antenna and won't fit this design.
| Qty | Part | Description | Link | Cost |
|---|---|---|---|---|
| 1 | ESP32 controller | ESP32-WROOM-32D, 39 pin (external antenna), USB-C | AliExpress | $3.13 |
| 1 | MP3 player | DFPlayer Mini | AliExpress | $2.18 |
| 2 | LED strips | COB, 5mm, 5V, 100 LED/m โ chevron + horizon only (no physical glyph ring on this model, the ring itself is the "glyph LEDs"). Exact count doesn't matter much for this gate. | โ | โ |
| 1 | Speaker | 8ฮฉ, 3W mini speaker | AliExpress | $3.75 |
| 2 | 9-pin socket headers | For the DFPlayer Mini | AliExpress | $1.61 |
| 2 | 18-pin socket headers | For the ESP32 | AliExpress | $1.89 |
| 3 | 330ฮฉ resistor | 1/4 watt | AliExpress | $1.44 |
| 1 | 1kฮฉ resistor | 1/4 watt | AliExpress | $1.47 |
| 1 | 1000ยตF 10V capacitor | Polarized electrolytic | AliExpress | $1.71 |
| 1 | 2-pin PC terminal block | 5.0mm pitch | AliExpress | $2.45 |
| 1 | JST-PH 2.0 | Board mount connector for the speaker | AliExpress | $1.51 |
| 1 | Micro SD card | Any size works, sound files are small (FAT32) | โ | โ |
| 1 | NEMA17 stepper motor | 1.3โ1.5A models (17HS4023, 17HS4401, 17HS3401, 17HS15-1504S all tested) + JST-XH 6-pin to Dupont 4-pin cable | example | โ |
| 1 | DRV8825 stepper driver | Drives the NEMA17. Calibrate its current limit (Vref) before first power-on โ see tutorial step 10. | example | โ |
| 1 | LM2596 buck converter | Adjustable โ steps the 12V input down for the logic/LED rails. Calibrate output voltage before first power-on. | example | โ |
| 1 | 12V DC power supply | Standard barrel jack, 12V only (never higher), center pin positive โ check polarity against what's printed on your adapter. Getting this wrong fries the board. | โ | โ |
| 1 | PCB | Dedicated SG-1 Motorized board โ make your own, or order from JLCPCB using the Gerber files below | โ | โ |
| Base electronics subtotal (excl. LED strips & motor hardware) | $21.14 | |||
Motor hardware (highlighted rows) and LED strips aren't priced here โ costs vary a lot by source and quantity, and the linked listings are just examples, not the ones every gate is built from.
๐ฉ Hardware to plan for
- M3 inserts (2 to 4mm) ร2
- M3 screws (10 to 12mm) ร4
Full parts breakdown, wiring, and calibration walkthrough (DRV8825 Vref, buck converter output) in the step-by-step tutorial.
Files
- 3D printed parts: direct download, includes the ramp and rotating glyph ring specific to this model.
- PCB: dedicated Gerber files โ not the standard V1/V2/V3 board.
- Sound pack: global file, shared by every gate model โ copy to
/mp3/at the root of the microSD card. - Firmware: flash from your browser, no toolchain needed โ pick SG-1 (Motorized) on the Flash page.
Questions or missing a link? Ask on the Discord.