Raspberry Pi 4 or 3 or 2 or 1 temperature monitor via HTTP

OMG the raspberry pi 4 gets hot, and that’s even with the new “cooler” firmware. At idle I’m measuring a temperature of 55°C. Im now quite glad I installed the monitor so I can keep an eye on it as its randomly crashed quite a few times.

So the install source is: https://xavierberger.github.io/RPi-Monitor-docs/11_installation.html

sudo apt-get install dirmngr
sudo apt-key adv --recv-keys --keyserver keyserver.ubuntu.com 2C0D3C0F
sudo wget http://goo.gl/vewCLL -O /etc/apt/sources.list.d/rpimonitor.list
sudo apt-get update
sudo apt-get install rpimonitor


my address is http://Daz-Pi-4.local:8888 yours might be different depending on your settings. Or just use the IP address:8888


The Man Page

man(1) rpimonitord man page man(1)


rpimonitord [-a address][ -b pidfile][[-c configuration_file]…]
[-d delay][-h][-k][-l logfile][-n][-p port][-s][-t timeout]

rpimonitord is designed to extract data from Raspberry Pi system and
store statistic into RRD. rpimonitord embed a web server allowing
to display current status and statistics.

-a, –addr Web server bind address (Default:
-b, –background Define the pid file when run in background
-c, –conf Define the configuration file
Default: /etc/rpimonitor/data.conf
-d, –delay Delay between check ins seconds (Default: 10)
Note: If you want to change the default delay, the
rrd file will have to be deleted rpimonitord will
recreate them at next startup with the new time
-h, –help Shows this help and exit
-i, –interactive Interactive configuration helper
-k, –keep Keep log file (Default: logfile is delete at each start)
-l, –logfile Logfile directory and prefix (ex: /var/log/rpimonitor)
-n, –noserver Don’t start embeded server
-p, –port Web server port (Default: 8888)
-s, –show Show configuration as loaded and exit
-t, –timeout KPI read timeout in seconds (Default: 5)
-v, –verbose Write debug info on screen
-V, –Version Show version and exit

Configuration can be defined into etc/rpimonitor/daemon.conf and
/etc/rpimonitor/data.conf or in a list of files specified by -c parameter.
In /etc/rpimonitor/template/*.conf provided at installation you can
see how to customize rpimonitord.
Configuration defined inside a configuration file always overwrite
default values.
Configuration given as option of the command line always overwrite
the one defined into a file.
** Warning: Be sure to use Linux filefeed format with line ending
with LF (and not CR/LF like in Windows) **

Once RPi-Monitor is started the data representing the current status
are available in json format and can be downloaded from the root of
the web interface (ex: http://RpiAddress:8888/static.json)
static.json: Static information extracted at startup
dynamic.json: Current values of dynamic information extracted
menu.json: Description of menus when multiple pages are

The web interface configuration can also be downloaded in json format:
statistics.json: Description of statistics page
status.json: Description of status page
friends.json: List of friends
addons.json: List of addons

Statistic information are stored into RRD file available in the
directory /var/lib/rpimonitor/stat/

Xavier Berger








E-Bike Battery Cell Replacement


It’s better than buying a complete new pack. Why? Because there’s a guy out there who will replace the individual cells. I’ve been quoted a price of £140 or a possible upgrade of £170 depending on how many cells and their configuration (series and parallel).

So i think what you have there is 10s4p battery pack or 10s5p
I will be able to make it like new 10s4p (13.6AH ) for 140GBP


or if it is 10s5p battery pack I can fit in 17AH ( 170 GBP )
( i will use Panasonic NCR_B ) cells
and each of my batteries will have a 2 year guarantee 🙂

And there’s also a bluetooth upgrade for £25, this will connect to your phone and it will give you precise data about the individual cells and the battery pack.

I can’t speak for other battery packs, but I know the packs from Halfords for their bikes start at £400 for a brand new pack.

So now my old pack, 3 years old, is getting a little past it, I’m really tempted to go for it, I’m just a little skint right now and I can’t afford it, at least not this month.

Just let Mat know The Bionic Cyclist sent you 🙂

Mat has also made me aware of the the other things he does:

Hi i can recell/Repair all type of batteries but i’m not doing flat type of batteries ( rear battery packs)( flat one ) or small bottle batteries ( which have 3x levels of cells )
also i have ready to use battery packs in blue thermo wrap ( with LCD /or Smart BMS ) 36V
+ I can make custom size ( Triangle/Rectangle battery pack ) 36V-72V (up to 3000W/5000W and more )
+ 36V custom battery for full suspension frame bikes
+ Just welded packs DIY (without BMS )
+ 24V – 48V Battery packs for Powerwalls / Campers / Chargers 1.5Kwh/2Kwh/3Kwh
+ 18650 cells for Sal

So that’s quite a range of different things in all.

GoPro Fusion Review

I’ve made a post on the forum and it’s not pretty, I like the hardware, it’s excellent. Unfortunately the software is a disaster. The camera has been available for over 2 years now, and gopro has done nothing to improve the situation, and they’re preparing a new 360 camera for launch. Unless they launch a new app for editing 360 videos that’s as good as the Insta360 One X app, then I can see this being a disaster for Gopro, and rumour is that they’re struggling to stay afloat.



This video shows how easy is is to use the Insta350 Studio to edit and reframe a 360 video. Sadly the Fusion requires three different types of software to acheive the same thing.

1. Gopro Fusion Studio to stitch the 2 cameras together (even on my beast AMD Ryzen 2700x, 16GB RAM and all SSD drives it takes hours and hours and hours just to stitch them.

2. Corel Paintsop Pro 2019 for Tiny Planet photos. £55

3. Adobe Premier for the video, keyframing and reframing the views. £20 per month for as long as you’ll use it.

The insta360 Studio does all this in the app that comes with the camera and for free.