This shows a web based status dashboard on a Raspberry Pi.

• Add * * * * * curl "https://api.thingspeak.com/update?api_key={YOUR_THINGSPEAK_API_KEY_HERE}&field1=$(awk '/MemFree/ {print $2}' /proc/meminfo)&field2=$(vcgencmd measure_temp | cut -d = -f 2 | cut -d \' -f 1)" to crontab and change API_KEY.
• Install a web server. Really any web server that can erve static content is fine.
• Copy this repository to the web root.
• Change ThingSpeak channel ID in index.html, cputemp/index.html and freemem/index.html as required.

• Open Raspberry Pi's IP address in a web browser (Chrome recommended).