2 layers56.8 × 66.2 mm
Tamagotchi
TaniWanKenobi/tamagotchi
A custom PCB-based Tamagotchi virtual pet built with the XIAO-ESP32-C6!
14 parts5
2 layers76.8 × 97.5 mm
Leebyte
Sylvia3366/leebyteMischievous tamagotchi w/ xiao-esp32-c3, a 0.96" oled, 3 buttons, a psp1000 joystick, a buzzer, and a temp sensor!!!
- Size
- 76.8 × 97.5 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 14
- Nets
- 25
- Pads
- 79
- Tracks, vias
- 76, 8
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 27 May 2026
- Updated
- 24 Jun 2026
Overview
Leebyte is an open-source printed circuit board by Sylvia3366, from the Sylvia3366/leebyte repository on GitHub. It is a 2-layer board of 76.8 × 97.5 mm with 14 parts on 25 nets, routed with 76 tracks and 8 vias.
It is built around the DS18B20, HS96L03W2C03 and 1207-P6.5MM. Its parts include 4 switches, 3 ICs, 1 resistor and 1 connector. It belongs with the ESP32 and RISC-V boards of this library.
Main components
3
DS18B20
TO-92-55℃~+125℃ 12bit 3V~5.5V 750ms Single-bus ±0.4℃ TO-92 Temperature Sensors ROHSUMWTemperature Sensors
HS96L03W2C03
--40℃~+70℃ 0.96 128x64 180cd/m2 21.744x10.864mm I2C Passive (PMOLED) SSD1315 chip White - OLED Display ROHSHSOLED Display
1207-P6.5MM
插件,D12.5xL7mm-20℃~+70℃ 10mA 12mm 4kHz 5V 6.5mm 7mm 85dB Passive (Externally Driven) Piezoelectric Plug-in 插件,D12.5xL7mm Buzzers ROHSXHXDZBuzzers
README
README.mdLEEBYTE™
ONSHAPE CAD
What is it?
LEEBYTE is a mischevious tamagotchi pet bunny you can play with, take care of, bully, or put in your pocket and forget about for the next twenty years! It features a 2-axis joystick, three Jureumi themed buttons, and a temperature sensor that will cause LEEBYTE to have different reactions based on your enviornment :)!
Why did I make it?
I made this project as a start point to my hardware journey! While starting with an odd, rabbit head PCB may not have been the best idea, it challenged me a lot.
My main motivation after seeing the guide for it on Fallout website was the existing Leebit Tamagotchi (See here!). It's way out of my budget though, so I thought this would be the perfect chance for me to design one myself, and customize it to my own liking! Additionally, I've been wanting to get into pixel art for a while, and this project let me experiment with drawing so many different expressions and actions.
How does it work?
LEEBYTE is unlike the usual 3-button tamagotchi pet; he can move! Using the joystick, you can take LEEBYTE on adventures and perhaps, you'll even find some cool treasures along the way...
Like most tamagotchi, LEEBYTE also comes with 3 Jureumi themed buttons that can be pressed to feed him, play with him, or put him to sleep. Pressing two buttons at once can have some effect too :). When playing with LEEBYTE, he enjoys hula hooping, jump roping, or (if he's in the mood) you can even play a short game of some good ol' Tic-Tac-Toe.
He's also able to detect the temperature of your enviornment. Make sure you keep him warm during the freezing winters and next to a blasting AC during the blazing summers! Otherwise, LEEBYTE might leave you...
Designing the PCB
PCB designed on KiCad!
Case designed and assembled on OnShape!
Rendered on Fusion360!
Bill of Materials
| Name | Qty | Unit | Price (USD) | Total (USD) | MOQ | MOQ Price (USD) | Source |
|---|---|---|---|---|---|---|---|
| Seeed Studio XIAO ESP32 C3 | 1 | pcs | 11.14 | 11.14 | 1 | 11.14 | Link |
| PSP 2-Axis Analog Thumb Joystick | 1 | pcs | 3.50 | 3.50 | 1 | 3.50 | Link |
| 0.96 inch OLED Display 128x64 | 1 | pcs | 1.91 | 1.91 | 1 | 1.91 | Link |
| Right Angle Slide Switch | 1 | pcs | 1.00 | 1.00 | 1 | 1.00 | Link |
| 4.7k Resistor | 1 | pcs | 0.01 | 0.01 | 100 | 1.47 | Link |
| Temperature Sensor (DS18B20) | 1 | pcs | 0.48 | 0.48 | 5 | 2.42 | Link |
| Piezo Buzzer | 1 | pcs | 0.50 | 0.50 | 10 | 5.02 | Link |
| Tactile Switch | 3 | pcs | 0.23 | 0.68 | 10 | 2.25 | Link |
| M1.6 5mm Screws | 7 | pcs | 0.03 | 0.21 | 50 | 1.56 | Link |
| M3 8mm Screws | 3 | pcs | 0.04 | 0.13 | 50 | 2.09 | Link |
| M2 5mm Standoff | 2 | pcs | 0.15 | 0.30 | 20 | 2.94 | Link |
| M2 Hex Nut | 2 | pcs | 0.07 | 0.14 | 50 | 3.38 | Link |
| Battery | 1 | pcs | 5.16 | 5.16 | 1 | 5.16 | Link |
| PCB | 1 | pcs | 0.40 | 0.40 | 5 | 2.00 | Link |
| PLA 3D Printed Case | 1 | pcs | - | - | - | - | - |
| Total | 27 | - | - | 25.56 | - | 45.84 | - |
Build & Assembly
Required Tools
- Solder
- Soldering iron
- Tweezers
- Screwdriver for M3/M2/M1.6 screws
- Computer w. a USB port
- 3D printer
Assembly
- Solder all parts onto the PCB.
- Secure the button caps onto the tact switches.
- Secure the joystick with 2 M2 5mm screws, M2 standoffs, and M2 hex nuts.
- Place the battery in the open part below the bottom case.
- Place PCB into the bottom case and wire to battery.
- Secure the PCB with 3 M3 screws.
- Place the top case over the bottom and secure with the M1.6 screws.
- Use Arduino IDE for the firmware.
- Connect the ESP32 to your computer via USB-C to upload code.
- Upload firmware.
- Test the OLED display and test the joystick inputs.
Parts
14| Qty | Value | Footprint | References |
|---|---|---|---|
| 3 | SW_Push | easyeda2kicad:SW-TH_4P-L4.5-W4.5-P3.00-LS4.8 | SW1, SW2, SW3 |
| 1 | 1207-P6.5MM | easyeda2kicad:BUZ-TH_BD12.5-P6.50-D1.4 | BUZZER1 |
| 1 | 4.7k | easyeda2kicad:RES-TH_BD2.3-L6.5-P10.50-D0.5 | R1 |
| 1 | Battery_Cell | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | BT1 |
| 1 | Conn_01x04_Pin | custom_footprints:JOYSTICK-PSP1000 | J1 |
| 1 | DS18B20 | easyeda2kicad:TO-92-3_L4.9-W3.7-P1.27-L | U4 |
| 1 | HS96L03W2C03 | easyeda2kicad:OLED-TH_L27.8-W27.2-P2.54_C9900033791 | U1 |
| 1 | MST-12D18G4 SPDT SLIDE SWITCH | easyeda2kicad:SW-SMD_MST-12D18G4-SPDT-SLIDE-SWITCH | SW4 |
| 1 | XIAO-ESP32-C3-SMD | New_XIAO_Series_Footprints:XIAO-ESP32-C3-DIP-SMD | U3 |
The 11 most common of 14 parts.
Questions
How big is the Leebyte PCB?
It measures 76.8 × 97.5 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Leebyte use?
14 parts, built around the DS18B20, HS96L03W2C03 and 1207-P6.5MM. 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 Leebyte KiCad files?
From the Sylvia3366/leebyte repository on GitHub, at the commit this page was made from: the board is hardware/kicad/leebyte.kicad_pcb and its schematic hardware/kicad/leebyte.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Leebyte design in my own project?
Its repository states no licence, so its author keeps all rights: ask Sylvia3366 before reusing the design.
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