2 layers99.1 × 99.1 mm
Power supply panelized
thebiguno/microcontroller-projects
A home for a bunch of microcontroller projects which don't warrant their own repos.
223 parts75
2 layers50 × 100 mm
Overcurrent
thebiguno/microcontroller-projects75A home for a bunch of microcontroller projects which don't warrant their own repos.
- Size
- 50 × 100 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 75
- Nets
- 77
- Pads
- 288
- Tracks, vias
- 665, 89
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 4
- Created
- 20 Nov 2014
- Updated
- 6 Jul 2024
Overview
Overcurrent is an open-source printed circuit board by thebiguno, from the thebiguno/microcontroller-projects repository on GitHub. It is a 2-layer board of 50 × 100 mm with 75 parts on 77 nets, routed with 665 tracks and 89 vias.
It is built around the ATMEGA32U4-AU, 74LS125DC and LM324, with the LM7805CT and FUS45-0045B among its other parts. Its parts include 23 resistors, 13 diodes, 11 capacitors, 5 ICs and 4 connectors. It belongs with the AVR (ATmega, ATtiny) boards of this library.
Main components
5
ATMEGA32U4-AU
QFP-44(10x10)-40℃~+85℃ 10bit 16MHz 1KB 2.5KB 2.7V~5.5V 26 32KB 8 Bit AVR Built-in FLASH QFP-44(10x10) Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)74LS125DC
-0℃~+70℃ 1 10ns@5.5V,50pF 15mA 18mA 24mA 4 4.5V~5.5V 74LS Power-off isolation、Output enable Tri-State Unidirectional - Buffers, Drivers, Receivers, TransceiversTexas InstrumentsBuffers, Drivers, Receivers, Transceivers
LM324
SOP-14-1.5V~10V 0℃~+70℃ 24V 250nA 3V~20V 4 40mA 50nA 700uA 7mV 80dB SOP-14 Operational Amplifier ROHSHXY MOSFETOperational Amplifier
LM7805CT
TO-2200℃~+70℃@(Ta) 1 1A 20V 2V@(1A) 40uV 5V 62dB@(120Hz) 8mA Fixed Over Current Protection、Short Circuit Protection、Thermal shutdown Positive TO-220 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSTexas InstrumentsVoltage Regulators - Linear, Low Drop Out (LDO) RegulatorsFUS45-0045B
--55℃~+150℃ 150A 45A 45V 5mA 820mV@45A Three-Phase Rectifier - Bridge Rectifiers ROHSLittelfuseBridge Rectifiers
README
README.mdmicrocontroller-projects
A home for my microcontroller projects, including Stubby the Hexapod and others. It includes libraries for avr-gcc along with sample programs on how to use them, some KiCad modules, and the source code for a number of projects.
Some major projects include:
- Stubby the Hexapod (http://stubby.digitalcave.ca/stubby/) (Now extracted into its own repo at https://github.com/thebiguno/stubby)
- DrumMaster (http://drummaster.digitalcave.ca/drummaster/)
- Chiindii (http://chiindii.digitalcave.ca/chiindii/)
Some of the AVR libraries included here are:
- serial communications
- TWI (I2C), with support for master read / master write / slave read / slave write, plus callback functions for asyncronous communications
- reading data from a PS2 controller
- timer functions
- and much more
Parts
75| Qty | Value | Footprint | References |
|---|---|---|---|
| 9 | 1k | custom:SM0603_VALUE | R6, R7, R10, R11, R19, R20, R21, R22, R23 |
| 7 | 10k | custom:SM0603_VALUE | R2, R5, R9, R12, R13, R14, R18 |
| 6 | TVS | Housings_SOT-23_SOT-143_TSOT-6:SOT-23 | D2, D6, D7, D8, D9, D10 |
| 5 | .1u | custom:SM0603_VALUE | C4, C5, C6, C8, C11 |
| 3 | 0.1u | custom:SM0603_VALUE | C2, C3, C10 |
| 3 | LED | custom:SM0603_DIODE | D1, D4, D5 |
| 3 | Q_NMOS_GDS | SMD_Packages:DPAK-2 | Q1, Q2, Q3 |
| 2 | 100uF, 35V | Discret:C1V5 | C7, C9 |
| 2 | 20k | custom:SM0603_VALUE | R1, R17 |
| 2 | 22 | custom:SM0603_VALUE | R3, R4 |
| 2 | DSCHSMALL | custom:SM0603_DIODE | D11, D12 |
| 2 | FUSE | Fuse_Holders_and_Fuses:Fuse_TE5_Littlefuse-395Series | F1, F2 |
| 2 | LM7805CT | SMD_Packages:DPAK-2 | VR1, VR2 |
| 1 | 0.1Ω 1% 5W | custom:RESISTOR_POWER | R15 |
| 1 | 10K | custom:POTENTIOMETER_SMD | RV1 |
| 1 | 10k 1% | custom:SM0603_VALUE | R16 |
| 1 | 32.768kHz | Crystals_Oscillators_SMD:crystal_FA238-TSX3225 | X1 |
| 1 | 470uF, 35V | Discret:C1V5 | C12 |
| 1 | 51k | custom:SM0603_VALUE | R8 |
| 1 | 5V | TerminalBlocks:3.5x2 | TB6 |
| 1 | 74LS125 | Housings_SSOP:TSSOP-14_4.4x5mm_Pitch0.65mm | U4 |
| 1 | ATMEGA32U4-A | Housings_QFP:TQFP-44_10x10mm_Pitch0.8mm | U2 |
| 1 | BATTERY | TerminalBlocks:3.5x2 | TB4 |
| 1 | DUMP | TerminalBlocks:3.5x2 | TB3 |
| 1 | ENCODER | Pin_Headers:Pin_Header_Straight_1x05 | P3 |
| 1 | FUS45-0045B | custom:i4-PAC-5 | BR1 |
| 1 | HD44780 | Pin_Headers:Pin_Header_Straight_1x16 | DS1 |
| 1 | HWB | custom:sw_42_32 | SW2 |
| 1 | IN4007 | custom:D2 | D3 |
| 1 | INA169 | Housings_SOT-23_SOT-143_TSOT-6:SOT-23-5 | U3 |
| 1 | ISP | custom:ISP_EDGE | P1 |
| 1 | LM324 | Housings_SSOP:TSSOP-14_4.4x5mm_Pitch0.65mm | U1 |
| 1 | LOAD | TerminalBlocks:3.5x2 | TB5 |
| 1 | MCP7941X | Housings_SSOP:TSSOP-8_4.4x3mm_Pitch0.65mm | U5 |
| 1 | PVP | TerminalBlocks:3.5x2 | TB2 |
| 1 | RESET | custom:sw_42_32 | SW1 |
| 1 | SD_CARD | custom:475710001 | P2 |
| 1 | STATOR | TerminalBlocks:3.5x3 | TB1 |
| 1 | USB-MINI-B | custom:USB_MINI_B_fixed | CON1 |
| 1 | ZENERsmall | custom:SM0603_DIODE | D13 |
Questions
How big is the Overcurrent PCB?
It measures 50 × 100 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Overcurrent use?
75 parts, built around the ATMEGA32U4-AU, 74LS125DC, LM324 and LM7805CT. 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 Overcurrent KiCad files?
From the thebiguno/microcontroller-projects repository on GitHub, at the commit this page was made from: the board is projects/windy/kicad/overcurrent/overcurrent.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Overcurrent design in my own project?
Its repository states no licence, so its author keeps all rights: ask thebiguno before reusing the design.
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