These are some small circuits that are more-or-less related to the mhz100q project. They tend to be one-off projects for specific applications and may require a fair amount of electronics knowledge to be useful. Blank pcb's are available from oshpark (www.oshpark.com/profiles/sensicomm) while schematics and notes on parts are in these links.
Comments and questions can be posted to my blog at blog.sensicomm.com/2014/03/widgets.html
Simple switching regulator