And I finished #soldering the first #BMS board. It's configured for a 5S LiIon #battery with 5A output current limit.
Here the finished board and the test setup.
So far, it works as intended. It cuts discharge at 4.91A, or when battery voltage drops below 14.5V. Charging is disabled when voltage gets too high.
I'll still have to test the temperature behavior, and how balancing works.
When I'm satisfied, I'll try with real cells.
#diyelectronics #BQ77915
pyDrone – An ESP32-S3 drone running MicroPython firmware
Question for the more industrial electronics/electrical peoples here:
I've got a little build on the stocks which requires quite a few wire-to-pcb connections.
The BOM uses TE MTA-156, but those really require a special (absurdly expensive) tool to attach the wires to the female connector.
I'll sodder the wires direct to the PCBs if I have to, but I wondered what other neat, pluggy, inexpensive solutions there might be?
Retro Handheld Based on the ESP32 CYD and RetroGo : 6 Steps (with Pictures)
DIY STM32 Alarm Clock with 7-Segment Display (Using Arduino
Vacuum tube radio progress: got decent reception of several medium wave AM stations: BBC radio 5, Radio Caroline and a Dutch one. I learned to stay away from switching power supplies, all I tried were so noisy I couldn't hear anything else. With a linear supply the sound is pleasant, but could still be a bit louder. #radio #diyelectronics #vacuumtube
Build Your Own DIY Auto Changeover Circuit
DIY Nirmal Weight Scale for Kitchen
The Most Trustworthy USB-C Cable Is DIY
I cultivate a curious garden.
New robotics build video!
I assembled the CYBUG Scarab — no code, no microcontroller, just classic analog electronics and emergent behavior.
Photophobic by design, this little beast actually avoids light
Full soldering/build walkthrough + a fun "HE LIVES!" moment at the end:
This cool Raspberry Pi project makes designing your own fingerprint locks easy
Piko - Your ESP32 Powered Fitness Buddy | Hackaday.io
Does somebody know where to get screw terminals with 2.54 mm pin distance from?
I want to do a fun project with my kids: a smash Enter key, the one you can bang as hard as you want. I only need to convince them to start soldering and trying the things together.
Also, I thought about building my own storage enclosure for a 10 inch rack. I'm just not sure how to connect it with its host system then. Using an M.2 adapter for OCuLink in the host and an OCuLink to PCIe adapter in the enclosure? Or something with eSATA? And as I thought about purchasing a backplane like https://www.servershop24.de/hpe-gen9-sff-backplane/a-116777/ I could maybe just use SFF-8087 to SATA cables. I just don't know if such a backplane can be used without a dedicated HBA controller card.