2 layers50 × 80 mm
2 layers50 × 80 mm
Helgatchi front PCB
Pips801/Helgatchi15Handheld BLE/WiFi detector and foxhunter
- Size
- 50 × 80 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 43
- Nets
- 23
- Pads
- 117
- Tracks, vias
- 255, 64
- Pours
- 8
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 26 Jan 2026
- Updated
- 5 Nov 2026
Overview
Helgatchi front PCB is an open-source printed circuit board by Pips801, from the Pips801/Helgatchi repository on GitHub. It is a 2-layer board of 50 × 80 mm with 43 parts on 23 nets, routed with 255 tracks and 64 vias.
It is built around the SK6805SIDE-G-003 and SMTSOM225BTR. Its parts include 9 diodes, 7 capacitors, 4 resistors, 3 switches and 2 connectors. It belongs with the radio and wireless boards and the ESP32 boards of this library.
Main components
2
SK6805SIDE-G-003
SMD,1.6x3.5mm-40℃~+85℃ 0.25mA 1.25mm 1.55mm 100ns 120° 2000V 200ns 280ns 3.5mm 3.7V~5.5V 4kHz 520nm~530nm 800Kbit/s Built-in power-on reset circuit、Built-in one-way transmission function Translucent Frosted Lens SMD,1.6x3.5mm RGB LEDs(Built-in IC) ROHSOPSCO OptoelectronicsRGB LEDs(Built-In IC)
SMTSOM225BTR
-2.5mm Copper M2 Tin plated - Patch round nut ROHSYIYUANSMD Round Nut
README
README.mdHelgatchi
Handheld BLE + WiFi Hunter
What is it?
A portable, hand-held BLE beacon and WiFi AP scanner/hunter, with built-in alerting, 1.69” full-color screen, and external SMA-RP antenna all powered by the XIAO ESP32-S3.
The Helgatchi will passively scan for BLE devices and WiFi SSIDs/APs, and alert when specific Manufacturers, naming schemes, or services are discovered.
It can be configured to alert anything you want, such as:
- ALPR/Surveilance equipment
- Tactical equipment
- Cameras
- Hidden cameras
- Fitness wearables
- Audio/Video devices
You can create rules based on the following fields
| 🐑 | MAC address | OUI (explicit) | OUI organization | MFG (explicit) | MFG organization | 802.11 SIG | Device name | SSID |
|---|---|---|---|---|---|---|---|---|
| WiFi | ✅ | ✅ | ✅ | ❌ | ❌ | ✅ | ❌ | ✅ |
| BLE | ✅ | ✅ | ✅ | ✅ | ✅ | ❌ | ✅ | ❌ |
Key Features
- Enclosed, portable, battery powered handheld rechargeable BLE and WiFi scanner and hunter that can live in your pocket.
- Passively scans for beacons in the background in-between sleeping - maximizing battery life. You can configure
- Powered by the XIAO ESP32-S3
- 6 RGB LEDs
- 1.69" rounded screen
- Vibration motor for alerts
- You can change
- Color scheme
- Alert settings
- Vibrate
- LEDs
- Screen Wake
- Scan settings
- Sleep duration
- Scan duration
- Rules for alerts
- MAC address (BLE, WiFi)
- Manufacturer (BLE, WiFi OUI)
- Device name (BLE name, WiFi SSID)
- Service (BLE)
Specifications
| Spec | Info |
|---|---|
| MCU | XIAO ESP32-S3 |
| Flash | 8MB |
| Battery | 400mAh - 1200mAh 3.7v LiPo |
| Screen | Waveshare 1.69” LCD - 240p × 280p |
| Antenna | XIAO -> u.FL > back PCB > SMA-RP > 2.4Ghz antenna |
| Size | Width: 50mm Length: 80mm |
Parts
43| Qty | Value | Footprint | References |
|---|---|---|---|
| 7 | 100nF | Capacitor_SMD:C_0603_1608Metric | C1, C2, C3, C4, C5, C6, C8 |
| 6 | SK6805-SIDE | SK68XX-SIDE:LED-SMD_4P-L3.5-W1.6_SK6805SIDE-G-001 | D2, D3, D4, D5, D6, D7 |
| 4 | 100kΩ | Resistor_SMD:R_0603_1608Metric | R1, R2, R3, R4 |
| 3 | D_Schottky | Diode_SMD:D_SOD-523 | D1, D8, D9 |
| 2 | SMTSOM225BTR | SMTSOM225BTR:SMD_BD5.6-D3.6 | H1, H2 |
| 1 | BATT | TestPoint:TestPoint_Pad_D1.0mm | TP1 |
| 1 | BATTERY | Connector_JST:JST_SH_SM02B-SRSS-TB_1x02-1MP_P1.00mm_Horizontal | J1 |
| 1 | CENTER BUTTON | Reverse mount button:Reverse button footprint | SW2 |
| 1 | G*** | kibuzzard-6976EA3A | kibuzzard-6976EA3A |
| 1 | G*** | kibuzzard-6976EF0C | kibuzzard-6976EF0C |
| 1 | G*** | kibuzzard-6976EDA9 | kibuzzard-6976EDA9 |
| 1 | G*** | kibuzzard-69862DFC | kibuzzard-69862DFC |
| 1 | G*** | kibuzzard-6976EEFC | kibuzzard-6976EEFC |
| 1 | G*** | kibuzzard-6976EA47 | kibuzzard-6976EA47 |
| 1 | LEFT BUTTON | Reverse mount button:Reverse button footprint | SW1 |
| 1 | LOGO | LOGO | G*** |
| 1 | MOTOR | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | M1 |
| 1 | NMOS | Package_TO_SOT_SMD:SOT-23 | Q1 |
| 1 | RIGHT BUTTON | Reverse mount button:Reverse button footprint | SW3 |
| 1 | SCREEN | Connector_Molex:Molex_PicoBlade_53261-0871_1x08-1MP_P1.25mm_Horizontal | J2 |
| 1 | Waveshare 1.69" | 1.69 inch LCDs:Waveshare 1.69_ | Untitled |
| 1 | XIAO ESP32-S3 | Seeed Studio XIAO Series Footprints:XIAO-ESP32S3-SMD | U1 |
The 39 most common of 43 parts.
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Questions
How big is the Helgatchi front PCB PCB?
It measures 50 × 80 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Helgatchi front PCB use?
43 parts, built around the SK6805SIDE-G-003 and SMTSOM225BTR. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Helgatchi front PCB KiCad files?
From the Pips801/Helgatchi repository on GitHub, at the commit this page was made from: the board is Hardware/Helgatchi front PCB/Helgatchi front PCB.kicad_pcb and its schematic Hardware/Helgatchi back PCB/Helgatchi back PCB.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Helgatchi front PCB design in my own project?
Its repository states no licence, so its author keeps all rights: ask Pips801 before reusing the design.