I've just contributed to Best / most stable OS and Hardware for NodeRed? which got me thinking about how many users are using poor cable or power supplies for Raspberry Pi's, and their performance is throttled... As I understand it.... $ vcgencmd get_throttled should return zero if the supply volt…

[image] Paul-Reed: vcgencmd get_throttled Pi2: throttled=0x0 Pi3: throttled=0x50000 For the Pi3: $ vcgencmd measure_temp temp=37.6'C So perhaps running a little hot. Possibly because InfluxDB is reaching 26% CPU every few seconds. Node-RED is also bursting to around 20-30% CPU every minut…

I may be wrong, but I've been interpreting the vcgencmd results a bit differently. As I understand it, the least-significant digit (bits 0-3) represents the current state, and the most-significant digit (bits 16-19) represents past occurrences, presumably since the last boot up. So, the code 0x50005 …

A node that would pick up the temperature, throttled state etc would be useful.

[image] TotallyInformation: So perhaps running a little hot. Possibly because InfluxDB is reaching 26% CPU every few seconds. This may help with that: [image] InfluxDB on a Raspberry Pi General This is not strictly Node-Red related but I know that several people he…

[image] drmibell: I may be wrong, but I've been interpreting the vcgencmd results a bit differently. As I understand it, the least-significant digit (bits 0-3) represents the current state, and the most-significant digit (bits 16-19) represents past occurrences Yes, having read into vcgencmd …

[image] drmibell: interpreting the vcgencmd results a bit differently Cool, nice spot - thanks. I thought it was a bit strange. <40°C seems like nothing. My Pi2 is running at 35.8°C. Of course, they are both running in a loft space right now so not surprising they are a lot cooler than many p…

[image] TotallyInformation: Not a bad idea if you have time. It's above my skill level, but perhaps it piques someone's interest.

Hi Paul ( @Paul-Reed ), Do you think this might fit into my node-red-contrib-cpu node, which can also be used currently to display the CPU temperature . If so, please be my guest to describe what could be added to this node to fit the needs ... Bart

depends... I think this voltage thing is fairly Pi specific. If your node is already Pi only then yes... If not then maybe not so obvious. There are a load of other Pi vcgencmd commands that could be investigated (but hopefully not all exposed - let's stick to the basics please !) - see https://eli…

That would be great Bart. vcgencmd get_throttled returns a bit pattern, which indicates whether throttled or not, and the reason why. The resulting bit pattern is; Bit Meaning 0 Under-voltage detected 1 Arm frequency capped 2 Currently throttled 3 Soft temperature limit active 16 U…

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Ras Pi supply voltage

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ghayne 10 March 2019 10:42 5

This may help with that:

Topic		Replies	Views
Node-red-contrib-vcgencmd : reset throttling statistics General	8	1426	8 September 2019
A little flow for the new `vcgencmd` node Share Your Projects	8	780	12 August 2019
RPi CPU Temperature monitoring - simple but informative Share Your Projects	36	4067	17 August 2020
Node-Red on RPi restarts after ~2 weeks General	52	933	17 December 2024
GPIO not working, indicates "OK" (yellow) General	45	797	3 June 2025

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Ras Pi supply voltage

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