Ghost One

A custom flipper-inspired multi-tool device - built from scratch.

I designed and built this project during Hackclub's Forge program - project link, to learn more about Embedded electronics, Radio frequency & Infrared communication & soldering, and hardware assembly.

BOM • 1 • 2 • 3 • 4

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Key Features

• Powered by an ESP32-S3 N16R8 microcontroller
• Built in Infrared & Sub-GHz modules
• WiFi 2.4 GHz and Bluetooth LE 5.0 capabilities
• Custom designed PCB & 3D Printed Case
• Simple menu UI on a 0.96" OLED display
• Can emulate Rubber Ducky payloads via bluetooth
• Supports microSD for efficient file management
• Rechargable 3.7V LiPo battery system (2000mAh)
• ESP-NOW communication protocol & messaging

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BOM

Component	Type	Price (£)	Price ($)	Link	Notes
ESP32-S3 N16R8	Microcontroller	£5.77	$7.79	AE	ESP32-S3 N16R8
SSD1306 0.96" OLED	Display	£1.36	$1.83	AE	White 1pcs
IR Transceiver TXRX	Infrared	£0.94	$1.26	AE	IR TxRx Kit
CC1101 Transceiver	Sub-GHz	£2.62	$3.52	AE	Type-C3
MicroSD Card Reader	Storage	£0.56	$0.75	AE	TF SPI
MicroSDHC Card	Storage	£9.99	$13.41	Amazon	16GB Performance Plus
5D Nav Button	Controls	£0.76	$1.02	AE	25mm x 20mm
3.7V LiPo Battery	Power	£8.07	$10.84	AE	1pcs (2000mAh)
TP4056 LiPo charger	Power	£0.14	$0.19	AE	Type-C 1pcs
DD0403MB 3.3V LDO Module	Power	£2.21	$2.97	AE	Output 3V3 No Pin
SS-12D00G 5mm switch	Power	£0.76	$1.02	AE	20pcs SS-12D00G 5mm
Jumper Wires (Dupont)	Electronics	£3.30	$4.43	AE	20cm M-M F-M F-F
Custom PCB	Electronics	£	$	JLCPCB	(+ shipping)
3D Print Case Filament	Reimbursement	£	$	HCB	Rounded to 250g?
5D Button Case Print	3D Print File	N/A	N/A	Makerworld	Or make my own?
Total	All	£36.48	$49.03	BOM	Rest of funds used for upgrades

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PCB Wiring

Power System

Component Pin	Net / Connection	Notes
Battery +	CH_+ (TP4056 B+)	Raw battery input
Battery –	GND / CH_-	Shared ground
TP4056 CH_+	Battery +	Charger input
TP4056 CH_-	Battery – / GND	Charger ground
TP4056 OUT+ (Pin 3)	CHG_OUT	Charger output to switch
TP4056 OUT–	GND	Same ground net
SW_SPDT Pin 1	CHG_OUT	From TP4056 OUT+
SW_SPDT Pin 2	LDO VCC	Power to LDO (middle pin)
SW_SPDT Pin 3	NC	Not used
LDO VCC	SW_SPDT Pin 2	Input to regulator
LDO GND	GND	Regulator ground
LDO VO	+3V3	Regulated 3.3V output
ESP32 3V3	+3V3	Main board power
ESP32 GND	GND	Common ground

SSD1306 Display (I2C)

Component Pin	ESP32 Pin / Net	Notes
VCC	+3V3	Power
GND	GND	Ground
SDA	GPIO8 (SDA)	I2C data
SCL	GPIO9 (SCL)	I2C clock

IR Transmitter

Component Pin	ESP32 Pin / Net	Notes
VCC / +3V3	+3V3	Power
GND	GND	Ground
DAT	GPIO4 (IR_TX)	IR LED drive

IR Receiver

Component Pin	ESP32 Pin / Net	Notes
VCC	+3V3	Power
GND	GND	Ground
OUT	GPIO5 (IR_RX)	IR receive signal

MicroSD Card (SPI)

Component Pin	ESP32 Pin / Net	Notes
VCC	+3V3	Power
GND	GND	Ground
MOSI	GPIO35 (SPI_MOSI)	Shared SPI
MISO	GPIO37 (SPI_MISO)	Shared SPI
SCK	GPIO36 (SPI_SCK)	Shared SPI
CS	GPIO38 (SD_CS)	SD chip select

CC1101 Radio (SPI)

Component Pin	ESP32 Pin / Net	Notes
VCC	+3V3	Power
GND	GND	Ground
MOSI	SPI_MOSI	Shared with SD
MISO	SPI_MISO	Shared with SD
SCK	SPI_SCK	Shared with SD
CSN	GPIO41 (CC_CSN)	Radio chip select
GDO0	GPIO39 (CC_GDO0)	Interrupt pin
GDO2	GPIO40 (CC_GDO2)	Interrupt pin

5-Way Navigation Switch

Nav Pin	ESP32 Pin / Net	Notes
F	GPIO10 (NAV_F)	Up
B	GPIO11 (NAV_B)	Down
L	GPIO12 (NAV_L)	Left
R	GPIO13 (NAV_R)	Right
M	GPIO14 (NAV_M)	Middle press
GND	GND	Common ground

Misc

Component Pin	Net / Connection	Notes
ESP32 RST	NC	No reset button used
5V_IN	NC	Not used

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Forge Requirements

• A short description of what your project is

• A couple of sentences on why you made the project

• Pictures of your finished project

• Screenshot of a full 3D model of your project

• Screenshot of your PCB (if applicable)

• Screenshot of your schematic (if applicable)

• Wiring diagram (if any wiring is not on a PCB)

• BOM in table format at the end of the README

• BOM.csv in the root directory with functioning links

• Source files for your project (hardware, firmware, CAD, etc.)

• Production files (if applicable)

• JOURNAL.md (if journalling on Git)

• Cover image, title, and description added on Forge

• Repository linked to your Forge project

❌ You should NOT have:

• AI‑generated README or journal entries
• Stolen or uncredited work
• Missing firmware/software

⚠️ Important: Missing any required item will result in project rejection and resubmission sends you to the back of the queue.

Designed and built by @gethin101