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2 layers58.4 × 101.6 mmReflow, the printed circuit board in 3D

Hardware and Firmware for an ESP8266-based reflow oven controller

Size
58.4 × 101.6 mm
Copper layers
2
Thickness
1.6 mm
Parts
53
Nets
31
Pads
163
Tracks, vias
291, 34
Pours
7
Routed
Yes
KiCad
KiCad 5 (file 20171130)
Created
15 Feb 2021
Updated
15 Feb 2021

Overview

Reflow is an open-source printed circuit board by hjf, from the hjf/ReflowOven repository on GitHub, published under the MIT licence. It is a 2-layer board of 58.4 × 101.6 mm with 53 parts on 31 nets, routed with 291 tracks and 34 vias.

It is built around the ESP-12E, HLK-PM03 and MAX31856, with the MOC3063M among its other parts. Its parts include 16 resistors, 12 capacitors, 7 connectors, 5 ICs and 3 diodes. It belongs with the ESP8266 boards of this library.

Main components

4

README

README.md

ESP8266 Reflow Oven Controller

Instrucciones en español mas abajo

Introduction

This is a simple PID controller with a web interface for a reflow oven. It requires a MAX31856, a K-type thermocouple, a MOC3041 optotriac, a suitable triac for your mains voltage, and a ESP-12E module.

Software

The Arduino-based firmware is included. It requres tzapu's WiFiManager to set up. It also includes ArduinoOTA for remote firmware upgrades.

Hardware

The KiCAD files are available too, but this is a simple circuit that can, obviously, be built out of standard arduino modules. Instead of the triac and optotriac, a SSR (Solid State Relay) can be used. A mechanical relay cannot be used as this circuit switches the load several times per second for accurate temperature control.


Introducción

Este es un controlador PID muy simple, con una interfaz web, para controlar un horno de soldadura por refusion. Necesita un MAX31856, una termocupla tipo K, un optotriac MOC3041, un triac adecuado para tu voltaje de linea, y un modulo ESP-12E

Software

Se incluye el firmware basado en Arduino. Necesita la libreria WiFiManager de tzapu para la configuracion. Tambien incluye ArduinoOTA para actualizaciones remotas.

Hardware

También se incluyen los archivos de KiCAD, pero este es un circuito tan simple que obviamente se puede armar con modulos Arduino comunes. En lugar del triac y optotriac, se puede usar un modulo SSR. No es posible usar un relay mecánico ya que el circuito conmuta la salida varias veces por segundo para un control preciso de la temperatura.

Parts

53
QtyValueFootprintReferences
14RResistors_SMD:R_0805R3, R4, R5, R6, R7, R8, R9, R10, R11, R12, R13, R14, R15, R16
11CResistors_SMD:R_0805C2, C3, C4, C5, C6, C7, C8, C9, C10, C11, C12
6MountingHoleMounting_Holes:MountingHole_3.2mm_M3MH1, MH2, MH3, MH4, MH5, MH6
4Screw_Terminal_01x02w_conn_mkds:mkds_1,5-2J1, J2, J6, J7
3Conn_01x06_FemalePin_Headers:Pin_Header_Straight_1x06_Pitch2.54mmJ3, J4, J5
2LED_ALTLEDs:LED_0805_HandSolderingD2, D3
2MAX31856Housings_SSOP:TSSOP-14_4.4x5mm_Pitch0.65mmU4, U5
2RResistors_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_HorizontalR1, R2
1CCapacitors_Tantalum_SMD:CP_Tantalum_Case-C_EIA-6032-28_HandC1
1ESP-12EESP8266:ESP-12E_SMDU3
1Fusefc211:FC-211F1
1HLK-PM03Power_Supply:HLK-PM03U2
1LOGOshock:SHOCK10X10G***
1LOGOshock:shock15mm2G***
1MOC3063MHousings_DIP:DIP-6_W7.62mmU1
1Q_TRIAC_A1A2Gw_to:to220_std_14cwD1
1VaristorVaristors:RV_Disc_D12_W3.9_P7.5RV1

Questions

How big is the Reflow PCB?

It measures 58.4 × 101.6 mm and has 2 copper layers, 1.6 mm thick.

What parts does the Reflow use?

53 parts, built around the ESP-12E, HLK-PM03, MAX31856 and MOC3063M. 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 KiCad files?

From the hjf/ReflowOven repository on GitHub, at the commit this page was made from: the board is KiCAD files/reflow.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.

Can I use the Reflow design in my own project?

Its repository publishes it under the MIT 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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