John Bostwick
TVWBB Wizard
Yesterday, I received my 3 boards back from OSH that I changed in Eagle Cad to connect the extra cat5 connections for use of a Auxiliary TC and probe board.
I made the following connection
Pin1 to Meat probe 1
Pin2 to Meat probe 2
Pin7 to a through-hole pad, next to the Cat5 jack
Pin8 to GND
On pin7, I could have also made a connection to the 100k resister, But that would keep me from using the onboard thermocouple jack, so I just added a solder pad. This way I can add a switch to change the from using the onboard or Aux TC board.
This HM works great with 2 probes and a thermocouple on a Auxiliary board on the cat5 cable, with only the one wire shown connected to the 100K resister.
If anybody wanted to have the above connections, here is a link to the boards on OSH. Although, you would have to order 3 of them.
HM4.2.4 with cat5 jack modified
I made the following connection
Pin1 to Meat probe 1
Pin2 to Meat probe 2
Pin7 to a through-hole pad, next to the Cat5 jack
Pin8 to GND
On pin7, I could have also made a connection to the 100k resister, But that would keep me from using the onboard thermocouple jack, so I just added a solder pad. This way I can add a switch to change the from using the onboard or Aux TC board.
This HM works great with 2 probes and a thermocouple on a Auxiliary board on the cat5 cable, with only the one wire shown connected to the 100K resister.
![116no88.jpg](http://i60.tinypic.com/116no88.jpg)
If anybody wanted to have the above connections, here is a link to the boards on OSH. Although, you would have to order 3 of them.
HM4.2.4 with cat5 jack modified