Better Stack offers heartbeat monitoring for free, here's the docs:
https://betterstack.com/docs/uptime/cron-and-heartbeat-monit...
Disclaimer: I'm the founder
Ask HN: How to do simple heartbeat monitoring?
71–80 of 86 posts
Re: Ask HN: How to do simple heartbeat monitoring?
#72we use updown.io for this and are happy with it. there's probably functionality built in to your other monitoring tools, or you could write a little serverless function to to it, but for me i really like to have it isolated. i wanted a tool that's not part of the rest of our monitoring stack, not part of our own codebase, and not something we manage.
Seconding Updown. Easy setup, pay-as-you-go, no nonsense.
I wish they had a better way to hit your phone. Currently it supports Slack and SMS but I need a way to make my phone go crazy when things go wrong (you can set Updown as an emergency contact but this has many downsides as well).
Re: Ask HN: How to do simple heartbeat monitoring?
#73I clicked to say something about Instrumentation Amplifiers or interfacing with chest straps ;) You might want to use a different service for monitoring your stack just to make sure you have some redundancy there. Seems like you got an answer for how to do this with Signoz but if that is down then you won't know.
Yeah, honestly, I'd like a smartwatch type monitor without any smart features; just something that sits on my wrist and displays my heart rate so I can watch it myself. I've looked a bit, but such a thing hasn't been easy to find.
Fitbit Sense 2 is pretty dumb for a smart watch, but Polar H10 should be more accurate.
Re: Ask HN: How to do simple heartbeat monitoring?
#74Invert the flux capacitor so it fires an alert if it doesn't receive a heartbeat. This should be a separate alert to your 500 one.
Re: Ask HN: How to do simple heartbeat monitoring?
#75I clicked to say something about Instrumentation Amplifiers or interfacing with chest straps ;) You might want to use a different service for monitoring your stack just to make sure you have some redundancy there. Seems like you got an answer for how to do this with Signoz but if that is down then you won't know.
Yeah, honestly, I'd like a smartwatch type monitor without any smart features; just something that sits on my wrist and displays my heart rate so I can watch it myself. I've looked a bit, but such a thing hasn't been easy to find.
The polar verity sense is what you're looking for. It connects to your phone via ble so it doesn't need a display. It's not as popular as a chest strap.
Re: Ask HN: How to do simple heartbeat monitoring?
#76Prometheus makes this a basic part of monitoring, "up" is a synthetic metric based on whether or not metrics gathering succeeds.
Re: Ask HN: How to do simple heartbeat monitoring?
#77OneUptime.com does this for you and is 100% open-source.
Re: Ask HN: How to do simple heartbeat monitoring?
#78I clicked to say something about Instrumentation Amplifiers or interfacing with chest straps ;) You might want to use a different service for monitoring your stack just to make sure you have some redundancy there. Seems like you got an answer for how to do this with Signoz but if that is down then you won't know.
What did you want to say about instrumentation amplifiers / chest straps? :eyes:
In pre-historic times I (EDIT: designed and) built a battery powered heart rate data logger for livestock. I used an instrumentation amplifier IC and some very simple electrodes and was able to use auto-correlation to detect the heart rate pretty reliably. For humans today I'd pick something like a Garmin chest strap which works with Bluetooth or ANT+. I've no direct experience with ANT or ANT+ but I imagine it's not hard to interface with ;)
That's more or less what I was gonna say...
Re: Ask HN: How to do simple heartbeat monitoring?
#79I clicked to say something about Instrumentation Amplifiers or interfacing with chest straps ;) You might want to use a different service for monitoring your stack just to make sure you have some redundancy there. Seems like you got an answer for how to do this with Signoz but if that is down then you won't know.
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Re: Ask HN: How to do simple heartbeat monitoring?
#80I clicked to say something about Instrumentation Amplifiers or interfacing with chest straps ;) You might want to use a different service for monitoring your stack just to make sure you have some redundancy there. Seems like you got an answer for how to do this with Signoz but if that is down then you won't know.
Yeah, honestly, I'd like a smartwatch type monitor without any smart features; just something that sits on my wrist and displays my heart rate so I can watch it myself. I've looked a bit, but such a thing hasn't been easy to find.
The Polar Pacer or Pracer Pro's only smart features are for exercises/etc. and I don't really use them, so it's really what you describe.