# A few questions from a prodigal son **URL:** http://forum.driveonwood.com/t/a-few-questions-from-a-prodigal-son/5342 **Category:** General Discussion **Created:** [July 31, 2020, 11:56pm UTC](http://forum.driveonwood.com/t/a-few-questions-from-a-prodigal-son/5342 "2020-07-31T23:56:02Z") **Posts on this page:** 1 **Showing post:** 18
### Author: ![Matt](http://forum.driveonwood.com/user_avatar/forum.driveonwood.com/matt/32/11298_2.png) [@Matt](http://forum.driveonwood.com/u/Matt) #### Post date: [August 2, 2020, 7:03pm UTC](http://forum.driveonwood.com/t/a-few-questions-from-a-prodigal-son/5342/18 "2020-08-02T19:03:43Z")
There are two Cross Fire Gasifiers for sale here on the site. @toddharp You may want to get a hold of Todd Harpster Ive built and developed direct wood gas systems for over 8 years. I have built some of the most advanced systems of their kind. If you go with direct wood gas, I would build a retort and cook your fuels down a bit. If you can do this reliably, you dont need to turn it too charcoal but cook out all the moisture. You are guaranteed to never have an issue and the machine will flow and run much more reliably with a less complex system. The other option is to go charcoal. Processing is less labor intensive but you lose a bit of energy density from raw feed stock to usable fuel. If you use process heat for other things this will help reduce this loss and water injection or flash steam injection will replace some of those losses as well. I did a tutorial here in the site to build an auto mixing electronic valve. This controller is now well proven. It is free > [@Wide Band Electronic Mixer Control Tutorial](http://forum.driveonwood.com/t/wide-band-electronic-mixer-control-tutorial/1800): > > Im going to start this tutorial. Please direct all responses to the “Arduino Manager Development for All” to keep this thread clean. This mixer controller is for the AEM wideband sensor and gauge kit with the LSU 4.9 sensor ( part# 30-4110). These can be found on Ebay, Amazon, Summit, Jegs, etc. You may use any arduino; however, to ensure replication I would recommend using the Nano with the screw shield as this will be used in this tutorial. All components used will have links to sources for p… I am in Muskegon Mi. you are welcome to the shop anytime. --- _[View the full topic](http://forum.driveonwood.com/t/a-few-questions-from-a-prodigal-son/5342)._