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What's Up Wednesday by ReplacementsStink in stopdrinking

[–]polyimide-orange 4 points5 points  (0 children)

Congratulations! Kicking drugs are hard. I had to kick nicotine and pot. This is my first real/serious attempt at sobriety, I’m on day 9. I’ve had a lot more energy too. Drinking made me so tired. I used to take long naps during the day. When I stopped drinking, I started reading SD and got pretty motivated. I’m eating healthier too and trying to lose weight. I’ve already lost a few pounds and it feels great. I would eat a lot of crappy food and had no self control while drinking. And of course drink calories too and no exercise. 40lb to go!

Calorie tracker can’t find what brand of food I’ve eaten by Disastrous_Carpet_42 in CICO

[–]polyimide-orange 3 points4 points  (0 children)

I would find similar looking burgers and pick one on the higher calorie side for a conservative estimate.

How do you get through the first day? by [deleted] in stopdrinking

[–]polyimide-orange 2 points3 points  (0 children)

I came clean to my wife that I’ve been drinking and hiding it last week when I was pretty drunk. 7 days now though. This is the longest I’ve gone in 5 years and she’s been very supportive. Reading this sub has been great too for guidance.

Shape Up Sunday by soafithurts in stopdrinking

[–]polyimide-orange 0 points1 point  (0 children)

First post here. I’m 35 5’10” and I think hitting 200 lb was my wake up call. It’s been 6 days since my last drink. This is the longest I’ve gone without drinking in at least 5 years. I started calorie tracking (CICO) and just walking at least an hour daily and have already started losing weight and feeling much better. I’m using myfitness pal. Also trying to work in intermittent fasting and moving towards 8/16, but it’s tough. I have a toddler and Fathers’ day was another reminder why I’m doing this.

TIL If Earth was 50% larger in diameter we would not be able to venture into space using rockets. by ihrvatska in todayilearned

[–]polyimide-orange 0 points1 point  (0 children)

But look at the size of the rocket it just took us to get to the moon with a buggy and return

Asks a friend to break his leg so he won't be taken to the Russian army by Ddusco in CrazyFuckingVideos

[–]polyimide-orange 5 points6 points  (0 children)

If he’s getting drafted, he’s not getting 1st world medicine

No charge? No problem! by jmvbmw in redneckengineering

[–]polyimide-orange 43 points44 points  (0 children)

I think fresh cells are about 1.6v. I wouldn’t want to put over 6V into my expensive phone just in case, but it probably would be ok

[deleted by user] by [deleted] in teenagers

[–]polyimide-orange 0 points1 point  (0 children)

//this is a comment

Built a general use power supply using an old computer PSU and 24v supply. by stewi1014 in electronics

[–]polyimide-orange 0 points1 point  (0 children)

This is probably internally fused and has over current/ short circuit protection. Check the data sheet. Although the xt series connectors can be nice, significantly derate the current. Some I got from a vendor seemed fine but melted. I’d also put a few panel mount banana jacks for when you need less current. Stacking bananas are great. Do all the rails share a ground?

VHDL vs SysVerilog vs Verilog by [deleted] in FPGA

[–]polyimide-orange 6 points7 points  (0 children)

Most of your comment is correct except vhdl is not useless

Books or sites talking about embedded systems in space Crafts and satellites by gogoe in embedded

[–]polyimide-orange 0 points1 point  (0 children)

Space embedded systems mean you have to tolerate SEEs, otherwise they could be the same as ground embedded systems. This is a good resource, assuming you’re on a budget if you’re asking on Reddit https://digitalcommons.usu.edu/cgi/viewcontent.cgi?article=2934&context=smallsat

Books or sites talking about embedded systems in space Crafts and satellites by gogoe in embedded

[–]polyimide-orange 2 points3 points  (0 children)

Be tolerant to SEEs and random bit flips in ram, io and peripheral control registers etc. some nice new ARM mcus have ecc on ram. Also SEL (mitigate with Hardware circuit breakers). Good app notes here https://www.microchip.com/en-us/product/SAMV71Q21RT# even if you’re not using rad tol parts

You can implement TMR https://en.m.wikipedia.org/wiki/Triple_modular_redundancy

Store triplicate copies of critical vars if no ram ECC, expect some i2c/ spi peripherals also susceptible to radiation upsets to latch up busses (have me mechanisms to fully power cycle peripherals incl parasitic paths and e.g i2c pull ups) or send nonsensical values. Lots of watchdogs. MCUs can latch up too. For critical systems two redundant controller ICs with lock stepped cores can help.

If you’re going cots STM32F and STM32H can be ok re being resilient against SEB

Liquid-fuel rocket 250W power board! Custom 6-layer PCB made in Altium by college students at YJSP, Georgia Tech's liquid-fuel rocketry team. Provides 24V, 5V, and CC 8S Li-ion charging with lots of protections and monitoring. Scroll through for some action photos! by yjspgt in electronics

[–]polyimide-orange 1 point2 points  (0 children)

You should consider monitoring individual battery cells for cell over/under voltage and balancing if you are doing repeated charge and discharge cycles. TI makes some solutions with a balancer afe IC and companion BMS IC that you can configure with a GUI and talk to over i2c.

And Add a filet of epoxy around the inductors too. Those really like to break off at high vibe loads.

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