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Have a friend who lost use of his hand. Worked in a machine shop and an 800lbs piece on sheet metal came squarely down on his palm and that was that. He wears a glove like Dr Strangelove lol
Tired, distracted and in a hurry are the three worst times to go near a saw of any type. Was just talking to my contractor about this a few days ago. We both agreed that our own personal close calls with a table saw and the injuries of people we know were caused by being tired or distracted. A close friend has no thumb and finger up to his knuckle due to reaching for an off cut. It was late and he was tired.
No Saw Stop here. I don’t go near or stop using my table saw when I feel tired. The Table Saw Book is a good reference to follow. Be safe. Don’t rely on YouTube for advice. A lot of the advice I’ve seen there is insufficient or just wrong.
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I'm fascinated they suture right through the nail 
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I got my surgery bandage off yesterday. Looks ugly AF, but it’s been a much easier recovery than my right hand, so far.
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My great grandfather worked at Hooker Furniture for 50 years. When he first started, it was looooong before OSHA was even thought of. From as early as I can recall, he did not have a single finger on either hand that was complete. That was an almost daily reminder as to what can happen if you are not careful. As a result, I am OVERLY cautious when it comes to hand tools and powered equipment.
Anecdotal to that, when he retired, they gave him a lapel pin with a diamond for each decade he worked. I remember hearing the other adult family members referring to him as a "5 star Hooker" man. I did not get the joke until my mid teens.
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Damn...that looks scary but glad to hear it's coming along as well as can be expected. So much fun. So a couple more weeks before you resume you handball playing? 
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I have what I think is likely the worse single person accident I know of.
I was working in a industrial park. A neighboring company made silver tableware. A kick press for a silver serving platter had stuck. A technician had put his head in to look for the cause (I think you can tell where this is going). Well the press became unstuck and the technician died. I didn't see it but the production workers had a direct pipeline to the company where it happened. Although in my mind I envisioned a cartoon character with a head shaped like a platter, in reality it was quite gruesome.
Company had hazmat cleanup and mental health workers for the production workers.
*shudders* that is horrific. 
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JFC on a goddamned pogo stick! That is horrible! I also assume they have warning stickers about putting your head in a powered up press... ugh
I'm sure there are procedures the tech did not follow. At the time the effect hit our employees as there were a lot of relationships between the workers in the two companies.
This is the most common problem I have with AC Power. Would not want the UPS to shut down the hub unless power has been off for a bit. And would not want the UPS to restart the hub unless the power has been on continuously for a bit.
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As I haven't found a way (yet) to determine if the hub is running or in shutdown, the best plan is:
- Do nothing special so when the batteries reach minimum level the UPS output goes off.
- After power is lost, wait hours then shut down the UPS output.
In either case, the UPS will return to normal when the mains returns.
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ooh man !
I want to unread that !!
Just brainstorming...
One of the stretch goals is a Zigbee module to communicate back to the hub. What if it that part was external? Maybe a small terminal block on the device with an internal relay that opens/closes when battery is critically low or mains power is lost. Then wire the terminals to an existing off-the-shelf sensor with leads (like a water or door sensor?) that's paired to the hub. It's then up to the driver or rules to gracefully shut down the hub. It's a little hacky and it doesn't bring the hub back up on restored power, but just an idea that might inspire something better...
Tbh, I don’t think we can justify the extra $12 in BoM cost for a Zigbee module.
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Maybe an option might be to design the board to have the pads for say a CC2530 module and ppl can populate it themselves if they want to go that route and program them with pvto's firmware? Or even a breakout header? Then you can add any zigbee board you want.
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I must admit, I really like the on-board Zigbee concept - Im really not sure we could deliver the smart functionality with any other option we've been exploring.
I've been looking at options to source Zigbee modules and I’ve found that Aliexpress have them for under $5 AUD. I think this might be the best option.
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Yeh this is what I was looking at. You don't need range at all
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Any particular reason for ZigBee vs WiFi?
A simple WiFi chip/module is even cheaper and that would make it possible to get the information needed from the UPS. It would also make the UPS usable by more than just a Hubitat or other ZigBee controller.
I have ESP8266 controllers running light strings at my house (for Christmas). I made a simple webserver for them and wrote a driver for a Hubitat to control them how I want (before I learned of WLED). I will admit I did not code much in the way of security... But if someone is already on my home WiFi I likely have bigger problems than them controlling some Christmas decorations.
