What did you build today (Pictures) ?
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@mfalkvidd Didn't you play with electromagnets when you were a kid? At least try coiling the wire and maybe putting a metal core inside it. Use a lot of coils. The more the better. Then maybe your reed-type switch would have a chance of seeing enough magnetism to trigger it.
@neverdie said in What did you build today (Pictures) ?:
@mfalkvidd Didn't you play with electromagnets when you were a kid? At least try coiling the wire and maybe putting a metal core inside it. Use a lot of coils. The more the better. Then maybe your reed-type switch would have a chance of seeing enough magnetism to trigger it.
Yes, but that would unfortunately completely defeat my purpose. The device should be easy to install (I can't expect the end-user to coil their cable) and work with cables that are designed for >10A which means they will be too thick to coil. I understand that I did not mention all aspects of the use case in my post though so thanks anyway.
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My son and I finally finished his first MySensors project- a remote control for his room. He wasn't too interested but you have to start somewhere right...? :)
Question for you all... what are you doing (if anything) to vent the fumes from soldering? I haven't really been worried about it in the past but it makes me nervous with my son doing it with me.
Anyway, here are the pictures.
@petewill said in What did you build today (Pictures) ?:
Question for you all... what are you doing (if anything) to vent the fumes from soldering? I haven't really been worried about it in the past but it makes me nervous with my son doing it with me.
I have a Hakko 493 clone, it has a carbon filter to absorb the smoke (or most of it) so it doesn't smell too much in the room when I need to solder for a long time and I can't open the windows. I don't have a link because I bought it in my local shop (it was cheaper than AliExpress + shipping), but you can easily find similar models or clones of the FA400 by searching "smoke absorber" on AliExpress.
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@neverdie said in What did you build today (Pictures) ?:
@mfalkvidd Didn't you play with electromagnets when you were a kid? At least try coiling the wire and maybe putting a metal core inside it. Use a lot of coils. The more the better. Then maybe your reed-type switch would have a chance of seeing enough magnetism to trigger it.
Yes, but that would unfortunately completely defeat my purpose. The device should be easy to install (I can't expect the end-user to coil their cable) and work with cables that are designed for >10A which means they will be too thick to coil. I understand that I did not mention all aspects of the use case in my post though so thanks anyway.
@mfalkvidd
I had a similar requirement recently, which was determining when my CNC was finished. I decided to measure the current to decide that. It's 24VDC and might have a current as high as 6amp in a theoretical worst case, but as little as 0.5a when moving just one of the stepper motors. So, what I came up with was this, which I've tested and it works:
Basically, it uses six 5-watt 3 ohm resistors in parallel to create a 1/2-ohm sense resistor, which an arduino then measures the voltage drop across by just doing an analog read from an analog GPIO pin across a voltage divider. I don't really know your use-case, but maybe you could adapt it for your application? You can ignore the LoRa module, which in my case I use to send out a signal to a remote receiver inside my house that the CNC print job (in the garage) is done. -
I made a MysX template for anyone who wants to create a MysX board to any EasyPCB in KiCadd.
Found here: https://github.com/sundberg84/HomeAutomation/tree/master/MysX template EasyPCB
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@petewill said in What did you build today (Pictures) ?:
Question for you all... what are you doing (if anything) to vent the fumes from soldering? I haven't really been worried about it in the past but it makes me nervous with my son doing it with me.
I have a Hakko 493 clone, it has a carbon filter to absorb the smoke (or most of it) so it doesn't smell too much in the room when I need to solder for a long time and I can't open the windows. I don't have a link because I bought it in my local shop (it was cheaper than AliExpress + shipping), but you can easily find similar models or clones of the FA400 by searching "smoke absorber" on AliExpress.
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My old Yamaha YSP-1100 soundbar just decided to die.
After some searching I found the problematic capacitor. A 22uF 600V had dropped to 6uF....
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Today I made and assembled a board which instantiates the schematic I posted above two days ago on this thread:
Basically, it sends a wireless signal as soon as the CNC machine finishes its work. -
@neverdie could you achieve something similar with a sonoff pow measuring the whole cnc power consumption?
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It's a very good suggestion. If I wasn't already done, I'd try it. If it works, the Sonoff would be simpler and less effort.
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Another hour on my... whatever it is.
Anyone that can recommend a open source router (hardware) or cheap hardware for pfsense which isn't that big and draws that watt amount.
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@gohan it's a pc with my intention to run pfsense (open source router) but it is old and draws to much power for my taste.
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How much power does that pc draw?
Mine:
Asrock Q1900B-ITX + pico 12V to atx psu + PCIE Intel Nic 2/4 Gbit ports + SSD can run on 20W or less, but I believe the J1900 Celeron lacks AES for VPN if you care about it.HP DL 380 G7 2xL5640 hex core, 144GB Ram, 4xGbit Nics, SSD, 90W at idle (99.9% of time) and pfsense is only one of the VMs I constantly run, besides OH2, Ubiquity controller, Nextcloud. The ability to snapshot a development VM, or fork (clone) it is a killer feature for me.
Another DL 380 G7 in standby is drawing 15W.
Phu*ck I have some old shitty switches that draw 30-40W, not to mention security cameras, 300-500Wh during the night for all my crazy home automation&security.
