4 layers149.5 × 113 mm
1. PDU
SshgurkiratSingh/CCMS_PORTAL
A full-stack smart streetlight fleet management system with real-time monitoring, remote control, and analytics.
111 parts2
2 layers42 × 38 mm
A8W
KiPeron/A8HWA8HW it is - Atmega 8 Hand Watches. Its just wrist watch on PCB without case
- Size
- 42 × 38 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 33
- Nets
- 54
- Pads
- 144
- Tracks, vias
- 269, 23
- Pours
- 13
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 19 Aug 2026
- Updated
- 19 Aug 2026
Overview
A8W is an open-source printed circuit board by KiPeron, from the KiPeron/A8HW repository on GitHub. It is a 2-layer board of 42 × 38 mm with 33 parts on 54 nets, routed with 269 tracks and 23 vias.
It is built around the ATMEGA8-16AU, MT3608 and DS1302Z+, with the AO3400A, LL4148 and IRLML6401 among its other parts. Its parts include 6 transistors, 5 resistors, 3 capacitors, 3 ICs and 3 diodes. It belongs with the AVR (ATmega, ATtiny) boards of this library.
Main components
6
ATMEGA8-16AU
TQFP-32(7x7)-40℃~+85℃ 10bit 16MHz 1KB 23 4.5V~5.5V 512Byte 8 Bit 8KB AVR Built-in FLASH TQFP-32(7x7) Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)
MT3608
SOT-23-6-40℃~+85℃ 1 1.2MHz 100uA、1.6mA 2A 2V~24V Adjustable Boost Boost Built-in No SOT-23-6 DC-DC Converters ROHS西安航天民芯DC-DC Converters
DS1302Z+
SOIC-8Real Time ClocksMaxim Integrated (Analog Devices)
AO3400A
SOT-23-55℃~+150℃ 1 N-channel 1.45V 1.4W 30V 48mΩ@2.5V 5.7A 50pF 630pF 75pF 7nC@10V N-Channel SOT-23 MOSFETs ROHSAlpha & Omega SemiconductorMOSFETs
LL4148
LL-341 Independent 1V@10mA 200mA 4A 4ns 500mW 5uA@75V 75V LL-34 Switching Diodes ROHSMDDSwitching DiodesIRLML6401
SOT-23-55℃~+150℃ 1 P-Channel 1.3W 125pF 12V 15nC@5V 180pF 4.3A 830pF 85mΩ@1.8V 950mV P-Channel SOT-23 MOSFETs ROHSKEXINMOSFETs
README
README.mdA8HW
Just wrist watch on atmega 8
Parts
33| Qty | Value | Footprint | References |
|---|---|---|---|
| 5 | AO3400A | Package_TO_SOT_SMD:SOT-23 | Q1, Q2, Q3, Q4, Q5 |
| 3 | FCN164 180R | KiModul:FCN164 | RA1, RA2, RA3 |
| 3 | LL4148 | Diode_SMD:D_MiniMELF | D1, D2, D3 |
| 3 | ~ | TestPoint:TestPoint_Pad_D2.0mm | +5V1, GND1, VBat+1 |
| 2 | 10k | Resistor_SMD:R_1206_3216Metric | R2, R3 |
| 2 | R | Resistor_SMD:R_1206_3216Metric | R4, R5 |
| 1 | 0.1u | Capacitor_SMD:C_0603_1608Metric | C1 |
| 1 | 10uF | Capacitor_SMD:C_1206_3216Metric | C2 |
| 1 | 22u | Inductor_SMD:L_Cenker_CKCS3015 | L1 |
| 1 | 32.768 | Crystal:Crystal_C38-LF_D3.0mm_L8.0mm_Horizontal | Y1 |
| 1 | 4.7k | Resistor_SMD:R_1206_3216Metric | R1 |
| 1 | 47uF | Capacitor_Tantalum_SMD:CP_EIA-7343-30_AVX-N_Pad2.25x2.55mm_HandSolder | C3 |
| 1 | 4D7SCD_V1 | KiModul:4D7SCD_V1_SMD | LEDD1 |
| 1 | ATmega8-16A | Package_QFP:TQFP-32_7x7mm_P0.8mm | U1 |
| 1 | Battery_Cell | Battery:BatteryHolder_Keystone_3034_1x20mm | BT1 |
| 1 | DS1302Z+ | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U2 |
| 1 | IRLML6401 | Package_TO_SOT_SMD:SOT-23 | Q6 |
| 1 | Increase | Button_Switch_SMD:SW_Push_1P1T_XKB_TS-1187A | SW3 |
| 1 | MT3608 | Package_TO_SOT_SMD:SOT-23-6 | U3 |
| 1 | Mode | Button_Switch_SMD:SW_Push_1P1T_XKB_TS-1187A | SW2 |
| 1 | PWR_ON_BTN | Button_Switch_SMD:SW_Push_1P1T_XKB_TS-1187A | SW1 |
Questions
How big is the A8W PCB?
It measures 42 × 38 mm and has 2 copper layers, 1.6 mm thick.
What parts does the A8W use?
33 parts, built around the ATMEGA8-16AU, MT3608, DS1302Z+ and AO3400A. 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 A8W KiCad files?
From the KiPeron/A8HW repository on GitHub, at the commit this page was made from: the board is Hardware/A8W.kicad_pcb and its schematic Hardware/A8W.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the A8W design in my own project?
Its repository states no licence, so its author keeps all rights: ask KiPeron before reusing the design.
Similar boards
- 2 layers35 × 35 mm
- 4 layers51.4 × 60.6 mm
Gb rp2040 cart
deltabeard/DBGC
A Game Boy cartridge using the Raspberry Pi RP2040 with RTC and MBC support.
67 parts57 - 2 layers95 × 35 mm
- 2 layers96 × 70 mm
- 4 layers133.8 × 75 mm
- 2 layers129 × 81 mm
RP2350 PCBoard
riktw/RP2350B_BellsNWhistles_pcboard
Little board to turn a RP2350B BellsNWhistles into a personal computer
67 partsMIT - 2 layers35 × 26.8 mm
Definitely not a fire hazard
seidenstrasse/capsules
3D printable models and schematics for capsule bodies and electronics
34 parts2MIT