2 layers74.4 × 84.7 mm
2 layers179.1 × 67.9 mm
Control Board
Alan-JH/PCB-Heater6Reflow hotplate PCB design
- Size
- 179.1 × 67.9 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 77
- Nets
- 67
- Pads
- 269
- Tracks, vias
- 476, 89
- Pours
- 5
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 7 Sep 2021
- Updated
- 24 Oct 2021
Overview
Control Board is an open-source printed circuit board by Alan-JH, from the Alan-JH/PCB-Heater repository on GitHub. It is a 2-layer board of 179.1 × 67.9 mm with 77 parts on 67 nets, routed with 476 tracks and 89 vias.
It is built around the ATTINY1614-SSN, HT16K33 and LM2575HVS-ADJ, with the LD1086DT33 and BC56-12SRWA among its other parts. Its parts include 29 resistors, 14 capacitors, 5 ICs, 5 diodes and 5 connectors. It belongs with the AVR (ATmega, ATtiny) boards of this library.
Main components
5
ATTINY1614-SSN
SOIC-14-40℃~+105℃ 1.8V~5.5V 10bit 12 16KB 20MHz 256Byte 2KB 8 Bit 8bit AVR Built-in FLASH SOIC-14 Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)
HT16K33
SOP-28-300mil-40℃~+85℃ 4.5V~5.5V PWM SOP-28-300mil LED Drivers ROHSHoltek SemiconLED Drivers
LM2575HVS-ADJ
DDPAK(TO-263-5)-40℃~+125℃@(TJ) 1 1.23V~57V 1A 4V~60V 52kHz 5mA Adjustable Buck Built-in No Overcurrent Protection、Cycle-by-cycle current limiting Step-down type DDPAK(TO-263-5) DC-DC Converters ROHSTexas InstrumentsDC-DC Converters
LD1086DT33
TO-252-2(DPAK)-40℃~+125℃@(Tj) 1 1.5A 1.5V@(1.5A) 3.3V 30V 5mA 79dB@(120Hz) 99uVrms Fixed Positive Short Circuit Protection、Thermal shutdown TO-252-2(DPAK) Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSSTMicroelectronicsVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
BC56-12SRWA
DIP-120.56 3 37.6mmx19mmx8.1mm 7 Segment 75mW Common Cathode Red DIP-12 LED Segment Displays ROHSKingbrightLED Segment Displays
README
README.mdPCB-Heater
Solder reflow hotplate design based on Carl Bugeja's idea and proof of concept.
Aluminum PCB as the resistive heating element, 200x200mm. Control board is separated and has displays for time and temperature (target and actual), and an SD card to read reflow profiles and save data to. Runs off of 3.3V logic and the ATTiny1614/1624 MCU. Input voltage (for the heating element) can range up to around 50V by design (Plan to use 36-48V), and the element itself should have a resistance of 5.1Ohm at 25C. Target maximum temperature is around 200C. Optional cooling provided by a 5V fan.
v1.0 results: 215C max temperature, 25 to 200C in around 4 minutes. 5 ohm resistance at room temperature, 10 ohm at 200C
Parts
77| Qty | Value | Footprint | References |
|---|---|---|---|
| 14 | 500R | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R9, R10, R11, R12, R13, R14, R15, R16, R17, R18, R19, R20, R21, R22 |
| 5 | 0.1uF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C1, C6, C9, C11, C12 |
| 4 | 100R | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R1, R3, R4, R33 |
| 4 | 10uF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C2, C3, C4, C7 |
| 4 | MountingHole_3.2mm_M3 | MountingHole:MountingHole_3.2mm_M3 | H1, H2, H3, H4 |
| 3 | 39K | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R28, R29, R30 |
| 3 | 4K7 | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R5, R7, R8 |
| 3 | BC56-12SRWA | PCB Heater:BC56-12SRWA | DS1, DS2, DS3 |
| 2 | 0.01uF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C8, C10 |
| 2 | 1N5818 | Diode_THT:D_T-1_P5.08mm_Horizontal | D4, D6 |
| 2 | IPD50N06S4L08 | Package_TO_SOT_SMD:TO-252-2 | Q1, Q2 |
| 1 | 100uF | Capacitor_SMD:CP_Elec_10x10.5 | C13 |
| 1 | 10K | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R34 |
| 1 | 1K | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R6 |
| 1 | 1K | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R31 |
| 1 | 1M | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R2 |
| 1 | 1N4001 | Diode_THT:D_T-1_P5.08mm_Horizontal | D5 |
| 1 | 1N4148 | Diode_SMD:D_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D3 |
| 1 | 22uF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C15 |
| 1 | 3.1K | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R32 |
| 1 | 3.3V | TestPoint:TestPoint_Pad_2.0x2.0mm | TP3 |
| 1 | 470uF | Capacitor_SMD:CP_Elec_8x10.5 | C14 |
| 1 | 470uH | Inductor_SMD:L_12x12mm_H8mm | L1 |
| 1 | 5V | TestPoint:TestPoint_Pad_2.0x2.0mm | TP2 |
| 1 | AD8497 | Package_SO:MSOP-8_3x3mm_P0.65mm | U3 |
| 1 | ATtiny1614-SS | Package_SO:SOIC-14_3.9x8.7mm_P1.27mm | U1 |
| 1 | FAN | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J6 |
| 1 | Ferrite_Bead | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | FB1 |
| 1 | GND | TestPoint:TestPoint_Pad_2.0x2.0mm | TP4 |
| 1 | HT16K33 | PCB Heater:Holtek-HT16K33-SOP28-0 | U4 |
| 1 | LD1086DT33 | Package_TO_SOT_SMD:TO-252-3_TabPin2 | U2 |
| 1 | LED | LED_SMD:LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D1 |
| 1 | LM2575HVS-ADJ | Package_TO_SOT_SMD:TO-263-5_TabPin3 | U5 |
| 1 | PWR/Heat | Connectors:Molex-38711-2204 | J5 |
| 1 | Reflow | Button_Switch_THT:SW_PUSH_6mm_H7.3mm | SW1 |
| 1 | SD_Card | Connector_Card:SD_TE_2041021 | J4 |
| 1 | Set temp mode | Button_Switch_THT:SW_PUSH_6mm_H7.3mm | SW3 |
| 1 | Stop | Button_Switch_THT:SW_PUSH_6mm_H7.3mm | SW2 |
| 1 | Tempset | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | RV1 |
| 1 | Thermocouple | Connectors:CUI-TB006-508-02BE | J3 |
| 1 | UPDI | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | J7 |
| 1 | VIN | TestPoint:TestPoint_Pad_2.0x2.0mm | TP1 |
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Questions
How big is the Control Board PCB?
It measures 179.1 × 67.9 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Control Board use?
77 parts, built around the ATTINY1614-SSN, HT16K33, LM2575HVS-ADJ and LD1086DT33. 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 Control Board KiCad files?
From the Alan-JH/PCB-Heater repository on GitHub, at the commit this page was made from: the board is ECAD/Control Board.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Control Board design in my own project?
Its repository states no licence, so its author keeps all rights: ask Alan-JH before reusing the design.