Search found 167 matches
- Thu Mar 28, 2019 12:12 pm
- Forum: ESP32 boards
- Topic: powering ESP32 with a battery
- Replies: 12
- Views: 18352
Re: powering ESP32 with a battery
We are currently using FANSO ER26500M in our devices (max continuous current 1500mA). There is also AA-sized FANSO ER14505M (max continuous current 400mA). Try to look for similar products from brands like EVE, Saft, Xeno. We are sourcing the batteries from https://www.tme.eu/en/ Not sure if they sh...
- Wed Mar 27, 2019 7:25 am
- Forum: ESP32 boards
- Topic: powering ESP32 with a battery
- Replies: 12
- Views: 18352
Re: powering ESP32 with a battery
Just be careful and check max continuous and peak currents of selected cell in case of LiSOCl2. Look for so-called "spiral" type which has special internal construction and is able to provide higher currents, this is important for devices with radio communication interfaces. In case of LiMnO2 always...
- Tue Mar 26, 2019 7:12 pm
- Forum: ESP32 boards
- Topic: powering ESP32 with a battery
- Replies: 12
- Views: 18352
Re: powering ESP32 with a battery
Primary battery means non-rechargeable. But they have quite high capacity in comparison to rechargeable Lithium chemistries (e.g. 2Ah for high performance AA cell with price around 3EUR or D cell with 14Ah for approx. 8-10EUR).
- Tue Mar 26, 2019 8:54 am
- Forum: ESP32 boards
- Topic: powering ESP32 with a battery
- Replies: 12
- Views: 18352
Re: powering ESP32 with a battery
A note regarding long-running battery powered applications - do not forget to take into consideration self-discharge of rechargeable batteries (accumulators). It is roughly 50% per year, depending on battery chemistry. This is why applications which are expected to run for years without battery repl...
- Sat Mar 02, 2019 11:28 am
- Forum: Other Boards
- Topic: New MaixPy update, support KPU, openMV~
- Replies: 4
- Views: 4330
Re: New MaixPy update, support KPU, openMV~
Thanks for update, just to clarify - release of 0.2.2 is planned on 3.4. or 3.3.?
- Sat Mar 02, 2019 7:39 am
- Forum: Other Boards
- Topic: New MaixPy update, support KPU, openMV~
- Replies: 4
- Views: 4330
Re: New MaixPy update, support KPU, openMV~
Are you planning to release MAIXPY beta 0.2.0 on GitHub?
- Fri Mar 01, 2019 5:58 pm
- Forum: ESP32 boards
- Topic: The SSD1306 library doesn't seem to ship in the ESP32 build
- Replies: 6
- Views: 4322
Re: The SSD1306 library doesn't seem to ship in the ESP32 build
You need to place the module into this folder during build time:
https://github.com/micropython/micropyt ... 32/modules
https://github.com/micropython/micropyt ... 32/modules
- Fri Mar 01, 2019 5:41 pm
- Forum: Programs, Libraries and Tools
- Topic: ESP32FLASHWRITER
- Replies: 5
- Views: 3903
Re: ESP32FLASHWRITER
It seems that module termios is not available on Windows:
"Because it requires the termios module, it will work only on Unix."
https://docs.python.org/3/library/tty.html
"Because it requires the termios module, it will work only on Unix."
https://docs.python.org/3/library/tty.html
- Fri Mar 01, 2019 8:38 am
- Forum: Programs, Libraries and Tools
- Topic: ESP32FLASHWRITER
- Replies: 5
- Views: 3903
Re: ESP32FLASHWRITER
Is it possible to build portable executable for Windows with all dependencies included?
- Mon Feb 25, 2019 6:07 pm
- Forum: ESP32 boards
- Topic: New ESP32 development board DMtech DEV01 with NB-IoT interface
- Replies: 9
- Views: 14120
Re: New ESP32 development board DMtech DEV01 with NB-IoT interface
The board exists in its first iteration which works quite well but needs some slight modifications. It would also be good to perform antenna impedance matching circuit tuning before mass production. Anyway NB-IoT interface works well with default values as well. The values are sourced from antenna d...