What useful/interesting things can be done with lead-acid battery fluid of dead battery?
A community for chemists and those who love chemistry
Which replacement battery should I get for my UPS?
For questions, news, and discussion about batteries, cells, chargers, charger/inverters, power banks and UPSs.
ESP32 CYD with thermal camera
ESP32 is a series of low cost, low power system on a chip microcontrollers with integrated Wi-Fi and dual-mode Bluetooth. The ESP32 series employs either a Tensilica Xtensa LX6, Xtensa LX7 or a RiscV processor, and both dual-core and single-core variations are available. It includes in-built antenna switches, RF balun, power amplifier, low-noise receive amplifier, filters, and power management modules as well.
Should lead-acid batteries make bubbling noises during charging?
For questions, news, and discussion about batteries, cells, chargers, charger/inverters, power banks and UPSs.
What does this do?
a subreddit for c++ questions and answers
How is this dimmer to be connected?
This subreddit is dedicated to both amateur and professional engineers that want to build cool stuff at home, challenge themselves to learn new technologies, learn from each others' designs, and showcase their side projects.
Lead-acid battery bulging?
For Batteries
Can I use this motorcycle charger to charge any 12V lead-acid battery?
For questions, news, and discussion about batteries, cells, chargers, charger/inverters, power banks and UPSs.
Can I use a "leading edge phase control" dimmer to regulate an AC fan?
This subreddit is dedicated to both amateur and professional engineers that want to build cool stuff at home, challenge themselves to learn new technologies, learn from each others' designs, and showcase their side projects.
Is this awg 15, 16 or 17?
This subreddit is dedicated to both amateur and professional engineers that want to build cool stuff at home, challenge themselves to learn new technologies, learn from each others' designs, and showcase their side projects.
Is a soldering tip meant to make solid contact with the heating element?
Welcome to Solder Joint Junction, a place for solderers from around the world, to gather, help one another, and hang out.
Is there any documentation of the SC3336 camera?
Unofficial luckfox.com community for their hardware. https://wiki.luckfox.com/ https://www.luckfox.com/
How can I estimate the polyester content in this yarn?
A community for chemists and those who love chemistry
How can I estimate the polyester content in this yarn?
Warm, fuzzy, sometimes tangled. Please read our sub rules. Rule-breaking may result in a ban without notice. It may take up to 48 hours for (1) a post to be approved/ reviewed (2) response to modmail/from a moderator. Whatever happens needs to happen thoughtfully. Please keep being excellent to each other.
Is it normal that soldering iron power consumption drops so quickly as it heats up?
Welcome to Solder Joint Junction, a place for solderers from around the world, to gather, help one another, and hang out.
Experience with these DIY spot welder PCBs?
This subreddit has been taken private from June12 in support of the strike on reddit to protest the upcoming changes to the pricing structure for the reddit API and related rule changes. ------- You probably want all your electronics to run on the 18650 lithium-ion cell. You just don't know it yet.
How does a 12V dc motor differ from a 24V dc motor?
This subreddit is dedicated to both amateur and professional engineers that want to build cool stuff at home, challenge themselves to learn new technologies, learn from each others' designs, and showcase their side projects.
Why are prismatic lifepo4 cells so much cheaper than round cells and is there a reason not to use them for an e-bike?
For Batteries
Turning an Apple Magsafe 2 power brick into adjustable power supply
This subreddit is dedicated to both amateur and professional engineers that want to build cool stuff at home, challenge themselves to learn new technologies, learn from each others' designs, and showcase their side projects.
Anyone got THIS specific SD card and is willing to sell it or trade against a brand new and faster card?
A subreddit dedicated to Zürich and its greater area.
What chance is there to recover the data from this SD card?
The primary goal of this group is for people to be able to ask data recovery related questions and get answers by real data recovery professionals.
Tasmota: How can I make tasmota device switch to AP if it cannot connect to configured wifi?
Home Assistant is open source home automation that puts local control and privacy first. Powered by a worldwide community of tinkerers and DIY enthusiasts. Perfect to run on a Raspberry Pi or a local server. Available for free at home-assistant.io.
How can I make tasmota device switch to AP if it cannot connect to configured wifi?
Mostly, consider this an archived for important info. r/tasmota/ went restricted in June 2023. Mod who kept it closed was removed 2024 April. Re-opening the sub to posts as of 2025 January. It may also be useful to check r/homeassistant/ for more help regarding Tasmota.