SPD on 5l problem with vac?

[cyclopath]

If y’all got no money and wanna know how much you suck…

Budget Digital Vacuum Sensor, read a 60$ pirani gauge through your PC

In the hunt for a reasonable budget vacuum gauge @JacobsLadder was kind enough to mention the MKS 901p sensor and provide some information to help me get it working properly. This gauge can be easily purchased on ebay for quite cheap, around 55$ shipped. The transducer easily communicates over serial port to a PC. This requires 2 wires for serial communication, and a separate power supply that ranges from 9vdc to 30vdc. You want to choose a power supply with a very low power output. I searc…

And

DIY: Vacuum and Temp Monitor Under $150

I wanted to get a quick writeup out there so at least the community has something to work off of while I still put together case and circuit designs. Using a list of basic off the shelf components: AC-DC converter (or whatever gets you a steady 12v dc power source wherever you may be located) (~10$) Adafruit feather huzzah esp8266 (~$15) LM2596 dc-dc buck converter (~2$) RS232 to TTL converter, MAX3232 (~5$) LCM1602 LCD I2C (~$18) Adafruit MAX31865 PT100 Amplifier (~12$) PT100 Temperature sen…