Search found 119 matches

by IHOXOHI
Tue Aug 11, 2020 8:08 am
Forum: MicroPython pyboard
Topic: Vbat use
Replies: 1
Views: 1665

Vbat use

Hi, I use a lipo battery on vbat pins... I ask to myself what's happen when battery is full and pyboard powered by usb. Is there an automatic switch for stop charging bat or have I to check level battery for save it at these times? Otherway, there isn't indication about level battery. Is there a pro...
by IHOXOHI
Sun Aug 09, 2020 8:55 am
Forum: General Discussion and Questions
Topic: check lipo battery level?
Replies: 8
Views: 4217

Re: check lipo battery level?

Hey, Finally, voltage divider works perfectly with just an oled display. I think that you can check correctly the level bat. But when I add 2 sensors (sgp30 and mcp9808), voltage fall down to a little value. Difference between full bat and empty bat is much more lower and it isn't possible to check ...
by IHOXOHI
Thu Aug 06, 2020 9:00 pm
Forum: ESP32 boards
Topic: Problem with drive WaveShare 2.7 inch B e-Paper
Replies: 10
Views: 6383

Re: Problem with drive WaveShare 2.7 inch B e-Paper

Yip,

With your code, you write black on black... ---> fb.fill(white)

Yup
by IHOXOHI
Mon Aug 03, 2020 7:09 pm
Forum: General Discussion and Questions
Topic: check lipo battery level?
Replies: 8
Views: 4217

Re: check lipo battery level?

Yop,
I tested with just 2 resistors of 10K for try something quicly. For moment, it looks perfect.

The count of my adc passed slowly, and clearly from 2449 to 2380 for 4 hours.

I will test with a zen diode too...

THANKS.
by IHOXOHI
Mon Aug 03, 2020 11:08 am
Forum: General Discussion and Questions
Topic: check lipo battery level?
Replies: 8
Views: 4217

Re: check lipo battery level?

Thanks.

I will try...

All the best.
by IHOXOHI
Sun Aug 02, 2020 2:56 pm
Forum: General Discussion and Questions
Topic: check lipo battery level?
Replies: 8
Views: 4217

check lipo battery level?

Hi, I would like use a pybstick from mchobby shop in a mobil way, so with a battery... On this board, there isn't a vbat pin... So I have connected a lipo battery of 3.7V - 400mAh on the vin pin... Powering is ok, and reload too... But it's not perfect, I can't known battery level for save the batte...
by IHOXOHI
Sun Aug 02, 2020 2:42 pm
Forum: General Discussion and Questions
Topic: simple USB interface using esp32?
Replies: 1
Views: 1212

Re: simple USB interface using esp32?

Hi,

have you seen installation guide on esp32 in micropython doc?
http://docs.micropython.org/en/latest/e ... ckref.html

good luck...
by IHOXOHI
Sat Aug 01, 2020 1:50 pm
Forum: Drivers for External Components
Topic: VS1053b audio drivers: play music, speech or sound FX
Replies: 15
Views: 11227

Re: VS1053b audio drivers: play music, speech or sound FX

Hey!!!

I have received the same amplificator, and I have added a good microphone for voice...

That's amazing!!!

The record is perfect!
I can hear clearly a person in a room... Accuracy is awsome.

GOOOOD JOB.

All the best.
by IHOXOHI
Mon Jul 27, 2020 5:06 pm
Forum: Drivers for External Components
Topic: MQ sensors
Replies: 7
Views: 7315

Re: MQ sensors

The subject is finally closed... I have received my professional LPG sensor... It's not possible to doesn't have influences of differents gas on mq sensor. So, you can't measure other thing than all gas of the sensor. For LPG gas, you can have an approximative value but for CO ; it's crazy. For dete...
by IHOXOHI
Mon Jul 27, 2020 1:24 pm
Forum: Drivers for External Components
Topic: Pimoroni Trackball breakout (PIM447)
Replies: 4
Views: 3769

Re: Pimoroni Trackball breakout (PIM447)

Finally, springton hat work fine. I don't know what happened when I tested it...
It's perfect with the pyb405 which has real interest. For example, I use it with epaper (for raspberry) and the trackball for command display text... Beautifull and perfectly convinient.

Thanks.