Reddit refuge, escentric engineer and serial hobbyist.

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  • 76 Comments
Joined 3 years ago
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Cake day: June 10th, 2023

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  • If you want this to be powered by a coincell battery or any battery you need to figure out a power budget and pick a wireless protocol. WiFi is incredibly power hungry and won’t happen with a battery unless you like charging it every few days. If you are willing to make it a powered setup it will open many options otherwise youre stuck with zwave, ZigBee, BLE and LoRA. If you want to mix this project with other fun stuff like LoRa/meshtastic look into these. They snap into a main board and you can add a temp and humidity sensor and collect the data over BLE, add a screen and communicate over LoRa for miles. I can get these to run on a 18650 battery for about 3 weeks.












  • That is not correct, you won’t get a random lower voltage. You are correct that thw PD supply needs to support the voltage but PD always starts with 5V for backwards comparability then digitally its negotiates the PD voltage it wants, if it asks for 12v and its not available it with just stay at 5V. It won’t spit out the closest value unless the device asks for it. Its a very strict and wonderful standard.



  • I thought it was a joke until someone at my company gave a company wide presentation on how to use AI to accelerate coding and st several points flat out ADMITTED he didn’t know what the hell it was doing but you just need to ‘baby sit’ it and you get useful scripts out of it. I’m a hardware engineer and I wanted to scream at him.



  • When cutting aluminum, push very gently. And when the raw material gets too small, don’t try cutting the last little piece. Small working material will increase the chance of accidents. I set my limit around 20 cm.

    This. So much this. Even when cutting wood properly on a mitre be careful with little pieces. You simply cannot control or hold really small pieces. Almost lost some fingers and scaring the hell out of myself making that mistake.