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Thanks for posting this. It seems like a great way to get even air distribution and to limit the amount of air that can be drawn in. I think I will copy and adapt this idea to the smoker we are working on

I saw very similar behavior and realized that I had placed the mosfet on the board wrong. You may want to double check the picture in the instructions for that step is taken directly above it so its hard to tell which way goes up

I finished building my second attempt at the heatermeter project and everything is powered up and working great. I do have one small issue though. I have a different case than the 3d printed case most are using so I had to get creative with my button mount and run wire from the button to the...

The 2 row header from mouser does work. Its a bit tighter than the others but it works well you just have to be a bit careful when pulling the two apart

Oshpark is by far the quickest and cheapest option for these boards if you are in the USA. You can now order and get just 1 board see store.oshpark.com I remember having the same confusion when I started this project, I believe everything will make much more sense now that you realize they are...

If you use a the raspberry pi setup you do not use a linksys router. Its a case of v3 uses a linksys router v4 uses the rpi instead of the linksys router. With the raspberry pi setup the rpi handles programming the atmega chip for you so no need for a programmer

The avr reflash only happens automatically the very first time you boot the rpi. You don't really want it to run everytime you boot the rpi otherwise any settings stored in the avr would be lost everytime you booted. So far everything your seeing sounds exactly like what I see when I boot, so...

That sounds like whats supposed to happen. Openwrt does not have a gui so there will be no user interface other than a terminal. Plug it into the network and see if you get a link light on the rpi. If you do change one of your computers to be on the same network (192.168.200.x) and see if you...

Still no luck in making the display work. I have however figured out what I did to mess everything up. I found a short from 12 volt supply to the common ground. With that in mind and considering how cheap the parts and board are I have decided the easiest/best way to proceed at this point is...

Excellent suggestion... this makes a lot of sense

Thanks bryan I went ahead and ordered another shift register, lcd and pot. Somethings got to be wrong and the shipping is going to be more than the parts if I guess wrong. It really sounds like the problem is the lcd, I'm just really confused as to how I could have messed up the new lcd... I...

The web interface changes the backlight correctly. The contrast pot appears to have no effect. When measuring voltage between 1 and 3 I get 3.5 or so however the contrast pot does seem to effect the voltage there. The lcd is brand new I just replaced it, looks like it could be a soldering...

I had my first heatermeter 4.0 with the raspberry pi working and in the case, and while trouble shooting the blower power out with a meter I goofed and let the smoke out. Upon rebooting it the heatermeter board actually booted but was not driving the lcd and while I could see values for the...