5/9/10 - these operating instructions are in the process of being updated for HBP v1.1

There are a few different ways to operate the heated build platform:

• Use 12v from you power supply, an on/off switch and adhesive temperature strips. This is a very simple open loop approach.
  
  
• Use the fan (or valve) port on your extruder controller. You can enable and disable the heated controller from RepG without any firmware changes. You can also control the heated platform in you G code using M commands (106/107 or 126/127 – fan or valve). This is also an open loop approach but is easy to implement and on/off control through the RepG interface and also provides some programmatic (M code) control.
  
  This is how I’ve been using it – turn it on (using control panel and/or M106 or M126) a few minutes before printing then turn it off (M107 or M127) after the first few layers have printed. It will slowly cool during the rest of the print operation.
  
  
• Update RepG and your firmware to the latest heated build platform configuration. This way you can regulate your heated platform the same way you regulate temperature on your plastruder. This is probably the best way to do it but also involves the most configuration work. The latest version of RepG (v12) has an interface for changing the thermistor table but those thermistor settings only relate to the thermistor on the nozzle. If you use a thermistor on your heated build platform then you will need to be sure your thermistor table matches the thermistor on your heated build platform. Also, heated build platform support is disabled in the standard download. You will need to re-compile the firmware with the heated build platform support enabled.

HBP 1.1 Updates

• For ABS connect the HBP heater wires directly to the power supply using PSU Molex connector. This will run your HBP at full temp ~110C (though it may vary a few degrees depending on your exact configuration and power supply). As long as your platform does not exceed 120C you should be fine.
  
• FOR PLA connect the HBP heater wires to port A on the extruder controller. This way you can set the desired temp. If you use an LED on your HBP you may need to reverse the heaters lines in the extruder controller for the LED to work.
  

Please send photos of your installed build platform and let us know how it is working. (feedback@makergear.com)

Rick