2 layers30.5 × 19 mm
2 layers50.8 × 25.4 mm
Ckt fred
IowaScaledEngineering/ckt-fredCircuit for Battery/Track Powered FRED
- Size
- 50.8 × 25.4 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 21
- Nets
- 13
- Pads
- 54
- Tracks, vias
- 108, 33
- Pours
- 9
- Routed
- Yes
- KiCad
- KiCad 6 (file 20211014)
- Created
- 14 Aug 2024
- Updated
- 26 Sep 2024
Overview
Ckt fred is an open-source printed circuit board by IowaScaledEngineering, from the IowaScaledEngineering/ckt-fred repository on GitHub, published under the GPL-3.0 licence. It is a 2-layer board of 50.8 × 25.4 mm with 21 parts on 13 nets, routed with 108 tracks and 33 vias.
It is built around the ATTINY13-20SSU, AP7381-33Y and BAT43W. Its parts include 5 diodes, 3 capacitors, 3 ICs, 2 resistors and 1 connector. It belongs with the AVR (ATmega, ATtiny) boards of this library.
Main components
3
ATTINY13-20SSU
SOIC-8-40℃~+85℃ 10bit 1KB 2.7V~5.5V 20MHz 6 64Byte 64Byte 8 Bit AVR Built-in FLASH SOIC-8 Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)
AP7381-33Y
SOT-89-40℃~+125℃@(Tj) 1 150mA 1V@(100mA) 2.5uA 3.3V 40V 60dB Fixed Positive Short Circuit Protection、Thermal Shutdown SOT-89 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSDiodes IncorporatedVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
BAT43W
SOD-1231 Independent 200mA 30V 450mV@15mA 4A 500nA@25V SOD-123 Schottky Diodes ROHSJiangsu Changjing Electronics Technology (CJ)Schottky Diodes
README
README.mdckt-fred
Circuit for Battery/Track Powered FRED
Parts
21| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | CDBM140G | ISE_Generic:SOD-123T | D1, D2, D3, D4 |
| 4 | TestPoint | TestPoint:TestPoint_Pad_4.0x4.0mm | TP1, TP2, TP3, TP4 |
| 2 | SolderJumper_2_Open | Jumper:SolderJumper-2_P1.3mm_Open_RoundedPad1.0x1.5mm | JP1, JP2 |
| 1 | 0.1uF | Capacitor_SMD:C_0805_2012Metric | C5 |
| 1 | 100k | Resistor_SMD:R_0805_2012Metric | R1 |
| 1 | 22uF | Capacitor_SMD:C_0805_2012Metric | C2 |
| 1 | 330 | Resistor_SMD:R_0805_2012Metric | R2 |
| 1 | 68uF | Capacitor_SMD:CP_Elec_6.3x5.8 | C1 |
| 1 | AP7381-33Y | ISE_Generic:SOT-89-3 | U1 |
| 1 | ATtiny13-20SS | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U3 |
| 1 | AVR-ISP | Connector:Tag-Connect_TC2030-IDC-NL_2x03_P1.27mm_Vertical | J2 |
| 1 | BAT43W | ISE_Generic:SOD-123T | D5 |
| 1 | Battery_Cell | Battery:BatteryHolder_Keystone_3034_1x20mm | BT1 |
| 1 | DRV5032 | Package_TO_SOT_SMD:SOT-23 | U2 |
Questions
How big is the Ckt fred PCB?
It measures 50.8 × 25.4 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Ckt fred use?
21 parts, built around the ATTINY13-20SSU, AP7381-33Y and BAT43W. 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 Ckt fred KiCad files?
From the IowaScaledEngineering/ckt-fred repository on GitHub, at the commit this page was made from: the board is kicad/ckt-fred/ckt-fred.kicad_pcb and its schematic kicad/ckt-fred/ckt-fred.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Ckt fred design in my own project?
Its repository publishes it under the GPL-3.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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