4 layers99 × 53.3 mm
PSLab
fossasia/pslab-hardware
PSLab Hardware Design and Schematics https://pslab.io
199 parts1.7kApache-2.0
2 layers74.9 × 74.9 mm
MaoTimer
Maobuff/MaoTimerA small kitchen timer for driving 12V loads. Based on MiniF4 with 1.3" OLED screen
- Size
- 74.9 × 74.9 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 35
- Nets
- 48
- Pads
- 124
- Tracks, vias
- 231, 16
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 19 Dec 2020
- Updated
- 20 Dec 2020
Overview
MaoTimer is an open-source printed circuit board by Maobuff, from the Maobuff/MaoTimer repository on GitHub. It is a 2-layer board of 74.9 × 74.9 mm with 35 parts on 48 nets, routed with 231 tracks and 16 vias.
It is built around the 1N4148W and MMBT3904. Its parts include 17 resistors, 5 capacitors, 3 diodes, 3 transistors and 3 connectors.
Main components
2README
README.mdMaoTimer
A small kitchen timer for driving 12V loads. Based on MiniF4 with 1.3" OLED screen
Parts
35| Qty | Value | Footprint | References |
|---|---|---|---|
| 8 | 10k | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R7, R8, R9, R10, R11, R12, R15, R16 |
| 5 | 4.7k | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R1, R2, R3, R5, R13 |
| 4 | 100nF | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C2, C3, C4, C5 |
| 2 | 1N4148W | Diode_SMD:D_SOD-123 | D1, D2 |
| 2 | 47k | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R4, R14 |
| 2 | MMBT3904 | Package_TO_SOT_SMD:SOT-23 | Q1, Q3 |
| 1 | 10uF | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C1 |
| 1 | 1k | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R6 |
| 1 | 600 | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R17 |
| 1 | Buzzer | Buzzer_Beeper:Buzzer_12x9.5RM7.6 | BZ1 |
| 1 | CTRL | Rotary_Encoder:RotaryEncoder_Alps_EC11E-Switch_Vertical_H20mm | SW1 |
| 1 | ENCLOSER | Connector_PinSocket_2.54mm:PinSocket_1x02_P2.54mm_Vertical | J3 |
| 1 | LED | LED_THT:LED_D5.0mm | D3 |
| 1 | LED | Connector_PinSocket_2.54mm:PinSocket_1x02_P2.54mm_Vertical | J2 |
| 1 | PWR | Connector_BarrelJack:BarrelJack_CUI_PJ-102AH_Horizontal | J1 |
| 1 | Q_NMOS_GDS | Package_TO_SOT_THT:TO-220-3_Horizontal_TabDown | Q2 |
| 1 | SH1106_I2C | MaoTimer:SH1106_I2C | U2 |
| 1 | V3.0 | MaoTimer:MiniF4_V3.0 | U1 |
Questions
How big is the MaoTimer PCB?
It measures 74.9 × 74.9 mm and has 2 copper layers, 1.6 mm thick.
What parts does the MaoTimer use?
35 parts, built around the 1N4148W and MMBT3904. 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 MaoTimer KiCad files?
From the Maobuff/MaoTimer repository on GitHub, at the commit this page was made from: the board is hardware/MaoTimer.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the MaoTimer design in my own project?
Its repository states no licence, so its author keeps all rights: ask Maobuff before reusing the design.
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