Hardware and Arduino Code for DIY WMRP-Solder Station

Summary of Hardware and Arduino Code for DIY WMRP-Solder Station


This project is a DIY WMRP Solder Station featuring a low offset op amp for precise soldering tip temperature measurement using a type C thermocouple, cold junction compensation via a PTC sensor, and input voltage monitoring for a 3-cell LiPo battery. It includes soldering pencil current measurement, standby detection when resting on the stand, three buttons for saving and recalling temperature values, and a rotary encoder for temperature setting. The display is an illuminated 16x2 LCD module. The device supports USB debugging and firmware updates, housed in a compact, clean enclosure with safe power input sockets and ESD protection.

Parts used in the DIY WMRP Solder Station:

  • Low offset operational amplifier
  • Type C thermocouple
  • PTC sensor (KTY82-210)
  • LCD display "Blue I2C 1602" from eBay
  • Modified connector "Amphenol T 3437 000"
  • 4mm safety sockets (red, black, green/yellow)
  • Rotary encoder
  • Rotary encoder knob
  • Display frame "EA027-2UKE"
  • Aluminium enclosure "Proma 131020"
  • USB interface for debugging and firmware update

Features:

  • low offset op amp for soldering tip temperature measurement with type c thermocouple
  • cold junction compensation using the PTC (KTY82-210) included in the WMRP soldering pencil
  • input voltage measurement (for use with 3 cell lipo battery)
  • soldering pencil current measurement
  • recognizing if the soldering pencil rests in the stand (–> standby)
  • 3 buttons for save and recall temperature values
  • rotary encoder to set soldering temperature
  • illuminated 16×2 character LCD module
  • USB for debugging and firmware update
  • clean and small enclosure
  • 4mm safety socket for +12V power input and a protective earth socket for connection to ESD protection

Hardware and Arduino Code for DIY WMRP-Solder Station

The BOM in the layout folder includes only the parts on the PCB(s).

Parts (not on PCB):

  • lcd display from ebay “Blue I2C 1602”
  • modified connector “Amphenol T 3437 000” (http://www.mikrocontroller.net/topic/143288#1500819)
  • 4mm safety sockets (red, black, green/yellow)
  • rotary encoder knob
  • display frame “EA027-2UKE”
  • aluminium enclosure “Proma 131020”

 

For more detail: Hardware and Arduino Code for DIY WMRP-Solder Station


About The Author

Ibrar Ayyub

I am an experienced technical writer holding a Master's degree in computer science from BZU Multan, Pakistan University. With a background spanning various industries, particularly in home automation and engineering, I have honed my skills in crafting clear and concise content. Proficient in leveraging infographics and diagrams, I strive to simplify complex concepts for readers. My strength lies in thorough research and presenting information in a structured and logical format.

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