HeaterMeter 4.3 Assembly

Tools

• Soldering Iron & Solder - I use 60/40 0.032” rosin core solder and an AOYUE 936 Soldering Station. Surprisingly good-for-the-price soldering stations can be found on eBay for ~$30 (search: 937D Soldering) and will work fine.
• Genuine Xuron 170 flush cutters or any Diagonal wire cuttters for cutting part leads
• A computer with an SD card reader
• OPTIONAL: Small Needle nose pliers

Parts

• Everything from the two Mouser projects Base and LCD/Button $58
• A set of HeaterMeter v4.3 PCBs - see below $19
• 12V 1A (or greater) power adapter with 2.1mm barrel jack (tip positive)
• HeaterMeter Probes minimum 1, up to 4 $10-15 ea
• RaspberryPi
  • Zero (no Ethernet, needs USB adapter for wifi) $5 if you can find one.
  • Model A+ (no Ethernet) $25, or more accurately closer to $33 shipped
  • Model B+ (with Wired Ethernet) $35, closer to $30 shipped
  • Model 2 B (with Ethernet, firmware v14 and above) ) $35 $38 shipped
  • Model 3 B (Wifi/Ethernet, firmware v14 and above) ) $35 $39 shipped
  • Model Zero W (with Wifi, firmware v14 and above) ) $10
• Micro sized SD card (not miniSD or full sized) 128MB or larger (Raspberry Pi SD Compatibility)
• A supported WiFi Adapter (Pi 3 and Zero W include built-in adapters)
• Phone or Ethernet cable you won't mind cutting an end off of
• Some sort of fan-attaching mechanism for your grill
• Some sort of enclosure

HeaterMeter PCB

There are two circuit boards (PCBs) needed to assemble the full HeaterMeter which can be sourced from your choice of locations. These can be obtained either by finding someone who has extra (they're usually ordered in 3s and you probably only need one) or by ordering your own set. To order your own set, use any online PCB fab service which supports gerber files. OSH Park is the preferred online service for the U.S., due to their quick turnaround, impeccable output, friendly service, and reasonable prices. Just upload the "dorkbot" zip file to their service and pay them. You'll have boards in your hands in about two weeks.

• OSH Park Base

• OSH Park LCD/Button

• Schematic Image Base and Button/LCD
• EAGLE 6 schematics and boards
• DorkBot/OSH Park cam job or cam output Base and LCD/Button. Use cam output if you just want a board made with no modifications.
• Individual PCBs can be ordered from the Official HeaterMeter Store for both Thermocouple/Thermistor or Four Thermistor

Assembly

Due to the modular nature of the parts, the build instructions are separated into multiple steps. All photos are available in the HeaterMeter v4.3 Assembly album.

1. Thermocouple SMD assembly and testing
2. HeaterMeter 4.3 Base Board Assembly
3. HeaterMeter 4.3 LCD/Buttton Board Assembly