2 layers132.9 × 130 mm
TouchBoard
8-Lambda-8/ShowControllPCBs
A collection of PCBs for controlling other show hardware via MIDI or OSC
292 partsGPL-3.0
2 layers94 × 27.5 mm
Calender
scooterthedev/CalenderTHE calender
- Size
- 94 × 27.5 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 52
- Nets
- 75
- Pads
- 232
- Tracks, vias
- 638, 139
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 18 Aug 2025
- Updated
- 27 Aug 2025
Overview
Calender is an open-source printed circuit board by scooterthedev, from the scooterthedev/Calender repository on GitHub. It is a 2-layer board of 94 × 27.5 mm with 52 parts on 75 nets, routed with 638 tracks and 139 vias.
It is built around the ATSAMD21G18A-AU, ESP-WROOM-02 and MCP73871EV, with the AMS1117-3.3 and SK6812MINI-E among its other parts. Its parts include 19 resistors, 12 capacitors, 5 ICs, 4 connectors and 4 switches. It belongs with the SAM D and SAM boards of this library.
Main components
5
ATSAMD21G18A-AU
TQFP-48-40℃~+85℃ 1.62V~3.6V 10bit 12bit 256KB 32 Bit 32KB 38 48MHz ARM Cortex-M0+ Built-in FLASH 上电复位(POR)、欠压检测(BOR/LVD/LVR/LVI)、看门狗复位、内置通用定时器、硬件CRC、日历功能、触控功能 TQFP-48(7x7) Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)
ESP-WROOM-02
SMD-18P-40℃~+85℃ -98dBm 170mA 2.4GHz 2.7V~3.6V 20dBm 50mA、56mA ESP8266EX On-board PCB Antenna UART、SPI、I2C、GPIO、PWM、I2S SMD-18P WiFi Modules ROHSEspressif SystemsWiFi ModulesMCP73871EV
-ModulesMicrochip Technology
AMS1117-3.3
SOT-223-40℃~+125℃ 0.003%Vout 1 1.1V@(800mA) 15V 1A 3.3V 5mA 72dB@(120Hz) Fixed Over Current Protection、Short Circuit Protection、Thermal shutdown Positive SOT-223 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSAdvanced Monolithic SystemsVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
SK6812MINI-E
SMD-40℃~+85℃ 0.6mA 1.78mm 120mcd~240mcd 120° 160mcd~320mcd 1kHz 2.8mm 2000V 3.2mm 3.7V~5.5V 460nm~470nm 515nm~525nm 620nm~625nm 800Kbit/s 815mcd~1275mcd Semi-transparent lens SMD RGB LEDs(Built-in IC) ROHSOPSCO OptoelectronicsRGB LEDs(Built-In IC)
README
README.mdCalender
This is a custom-built calender PCB that allows me to upload my school schedule (or just counting down how many days of school I have left!) via WIFI (on an esp32) to an e-ink display and use it in my locker off a AA battery. When it's at home, it will be able to act as a music player or still a calender, allowing me to plug it in via usb-c or just by using wifi and display live music status.
Photos
BOM
| Name | Part # | JLCPCB Part # | Qty | Total Price |
|---|---|---|---|---|
| 10uF | CL10A106KP8NNNC | C19702 | 20 | 0.112 |
| 4.7uF | CL10A475KO8NNNC | C19666 | 20 | 0.202 |
| 1uF | CL10A105KB8NNNC | C15849 | 20 | 0.094 |
| 100nF | CC0603KRX7R9BB104 | C14663 | 22 | 0.0506 |
| Conn_01x09 | ZX-PZ1.0-1-9PZZ | C37328859 | 2 | 0.2856 |
| USB_C_Receptacle_USB2.0_16P | GT-USB-7010ASV | C2988369 | 2 | 0.1572 |
| Power | DB128L-5.08-2P-GN-S | C395868 | 2 | 0.3622 |
| 5.1k | 0603WAF5101T5E | C23186 | 20 | 0.02 |
| 2k | 0603WAF2001T5E | C22975 | 20 | 0.02 |
| 10k | 0603WAF1002T5E | C25804 | 26 | 0.0234 |
| 100kΩ | 0603WAF1003T5E | C25803 | 20 | 0.02 |
| RotaryEncoder_Switch | EC11E18244AU | C202365 | 2 | 3.825 |
| SW_Push | BTSA-N-P-13 | C2693637 | 0 | 0 |
| ATSAMD21G18A-A | ATSAMD21G18A-AU | C78624 | 2 | 6.249 |
| MCP73871 | MCP73871T-2CCI/ML | C511310 | 2 | 7.482 |
| ESP-WROOM-02 | ESP-WROOM-02D-N4 | C529584 | 2 | 3.75 |
| AMS1117-3.3V | AMS1117-3.3V | 2 | 1.25 | |
| PCB | $76.80 after tax + shipping |
Other Items
| Item | Details/Source | Qty | Price |
|---|---|---|---|
| 0.91 OLED | 0.91 OLED | 1 | $1.15 since mine just broke :( |
| E-Ink Display | From Waveshare | 2 | $48.98 after tax + shipping |
TOTAL: $126.93 USD without customs
Parts
52| Qty | Value | Footprint | References |
|---|---|---|---|
| 9 | 10k | Resistor_SMD:R_0603_1608Metric | R6, R7, R8, R9, R10, R12, R13, R14, R19 |
| 7 | 100nF | Capacitor_SMD:C_0603_1608Metric | C6, C7, C8, C9, C10, C11, C12 |
| 6 | TestPoint | TestPoint:TestPoint_Pad_4.0x4.0mm | TP1, TP2, TP3, TP4, TP5, TP8 |
| 3 | 10kΩ | Resistor_SMD:R_0603_1608Metric | R16, R17, R18 |
| 3 | 5.1k | Resistor_SMD:R_0603_1608Metric | R1, R2, R4 |
| 3 | SW_Push | Button_Switch_THT:SW_PUSH_6mm | SW2, SW3, SW4 |
| 2 | 10uF | Capacitor_SMD:C_0603_1608Metric | C1, C2 |
| 2 | 4.7uF | Capacitor_SMD:C_0603_1608Metric | C3, C4 |
| 1 | 1.5k | Resistor_SMD:R_0603_1608Metric | R15 |
| 1 | 100kΩ | Resistor_SMD:R_0603_1608Metric | R11 |
| 1 | 10K | Resistor_SMD:R_0603_1608Metric | R3 |
| 1 | 1uF | Capacitor_SMD:C_0603_1608Metric | C5 |
| 1 | 2k | Resistor_SMD:R_0603_1608Metric | R5 |
| 1 | AMS1117-3.3 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U4 |
| 1 | ATSAMD21G18A-A | Package_QFP:TQFP-48_7x7mm_P0.5mm | U1 |
| 1 | Conn_01x09 | Connector_PinHeader_2.54mm:PinHeader_1x09_P2.54mm_Vertical | J1 |
| 1 | ESP-WROOM-02 | RF_Module:ESP-WROOM-02 | U5 |
| 1 | LOGO | LOGO | G*** |
| 1 | MCP73871 | Package_DFN_QFN:QFN-20-1EP_4x4mm_P0.5mm_EP2.5x2.5mm | U3 |
| 1 | NAND | Package_SO:SOIC-8_5.3x5.3mm_P1.27mm | U6 |
| 1 | Power | TerminalBlock:TerminalBlock_bornier-2_P5.08mm | J3 |
| 1 | RotaryEncoder_Switch | Rotary_Encoder:RotaryEncoder_Alps_EC11E-Switch_Vertical_H20mm | SW1 |
| 1 | SK6812MINI | LED_SMD:LED_SK6812MINI_PLCC4_3.5x3.5mm_P1.75mm | D1 |
| 1 | Screen-2 | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J4 |
| 1 | USB_C_Receptacle_USB2.0_16P | Connector_USB:USB_C_Receptacle_HCTL_HC-TYPE-C-16P-01A | J2 |
Questions
How big is the Calender PCB?
It measures 94 × 27.5 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Calender use?
52 parts, built around the ATSAMD21G18A-AU, ESP-WROOM-02, MCP73871EV and AMS1117-3.3. 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 Calender KiCad files?
From the scooterthedev/Calender repository on GitHub, at the commit this page was made from: the board is Calender.kicad_pcb and its schematic Calender.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Calender design in my own project?
Its repository states no licence, so its author keeps all rights: ask scooterthedev before reusing the design.
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