2 layers
Circular PCB
ChowdaryManyam/ATtiny-Chainy
As an OSHWA-certified project, ATtiny-Chainy adheres to the open-source hardware definition, ensuring transparency, collaboration, and accessibility for the maker community.
24 parts1MIT
2 layers78.3 × 78.5 mm
REFLOW PCB
labdvm/REFLOW-PCBReFlow PCB with ATtyny85
- Size
- 78.3 × 78.5 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 24
- Nets
- 13
- Pads
- 71
- Tracks, vias
- 154, 50
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 17 Feb 2026
- Updated
- 13 Jun 2026
Overview
REFLOW PCB is an open-source printed circuit board by labdvm, from the labdvm/REFLOW-PCB repository on GitHub. It is a 2-layer board of 78.3 × 78.5 mm with 24 parts on 13 nets, routed with 154 tracks and 50 vias.
It is built around the ATTINY85-20SU, L7805 and IRLZ44N. Its parts include 8 resistors, 3 capacitors, 3 connectors, 3 switches and 2 ICs. It belongs with the AVR (ATmega, ATtiny) boards of this library.
Main components
3
ATTINY85-20SU
SOIC-8-208mil-40℃~+85℃ 10bit 2.7V~5.5V 20MHz 512Byte 512Byte 6 8 Bit 8KB AVR Built-in FLASH SOIC-8-208mil Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)
L7805
TO-220ST0℃~+125℃@(Tj) 1 1.2A 20V 2V@(1A) 42uV 500uA 5V 73dB@(120Hz) Fixed Positive Short Circuit Protection TO-220ST Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSOSENVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
IRLZ44N
TO-22055V 47A N-Channel HEXFET® Power MOSFETInfineon TechnologiesUncategorised
README
README.mdREFLOW-PCB
ReFlow PCB with ATtyny85
- Modification from " https://github.com/rallekralle11/Tinyreflow "
J3 programming interface
- 1= +5Vcc
- 2= PB1_MISO
- 3= PB0_MOSI
- 4= PB2_SCK
- 5= GND
- 6= PB5_RST
Parts
24| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | 10k | Resistor_SMD:R_1206_3216Metric | R1, R2, R7, R8 |
| 3 | 1k | Resistor_SMD:R_1206_3216Metric | R3, R4, R5 |
| 1 | |||
| 1 | 100n | Capacitor_SMD:C_1206_3216Metric | C2 |
| 1 | 100µf | Capacitor_THT:CP_Radial_D6.3mm_P2.50mm | C3 |
| 1 | 10kΩ bead thermistor | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P2.54mm_Vertical | TH1 |
| 1 | 1u | Capacitor_SMD:C_1206_3216Metric | C1 |
| 1 | 2K2 | Resistor_SMD:R_1206_3216Metric | R6 |
| 1 | ATtiny85-20S | Package_SO:SOIC-8_5.3x5.3mm_P1.27mm | U2 |
| 1 | Display OLED | Connector_PinSocket_2.54mm:PinSocket_1x04_P2.54mm_Vertical | J2 |
| 1 | ENTER | Button_Switch_THT:SW_PUSH_6mm_H9.5mm | SW1 |
| 1 | IRLZ44N | Package_TO_SOT_THT:TO-220-3_Vertical | Q1 |
| 1 | L7805 | Package_TO_SOT_SMD:TO-252-2 | U1 |
| 1 | LED | LED_SMD:LED_1206_3216Metric | D1 |
| 1 | Prog.interface | Connector_PinHeader_2.54mm:PinHeader_2x03_P2.54mm_Vertical | J3 |
| 1 | RESET | Button_Switch_THT:SW_PUSH_6mm_H9.5mm | SW3 |
| 1 | SELECT | Button_Switch_THT:SW_PUSH_6mm_H9.5mm | SW2 |
| 1 | Screw_Terminal_01x02 | TerminalBlock_Phoenix:TerminalBlock_Phoenix_MKDS-1,5-2-5.08_1x02_P5.08mm_Horizontal | J1 |
| 1 | ~ | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | JP1 |
Questions
How big is the REFLOW PCB PCB?
It measures 78.3 × 78.5 mm and has 2 copper layers, 1.6 mm thick.
What parts does the REFLOW PCB use?
24 parts, built around the ATTINY85-20SU, L7805 and IRLZ44N. 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 REFLOW PCB KiCad files?
From the labdvm/REFLOW-PCB repository on GitHub, at the commit this page was made from: the board is ReFlow PCB.kicad_pcb and its schematic ReFlow PCB.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the REFLOW PCB design in my own project?
Its repository states no licence, so its author keeps all rights: ask labdvm before reusing the design.
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