Search found 60 matches
- Fri May 05, 2023 6:39 am
- Forum: Drivers for External Components
- Topic: Micropython library for the TI INA219 voltage/current sensor
- Replies: 26
- Views: 180139
Re: Micropython library for the TI INA219 voltage/current sensor
I have started a thread INA226 on the Github forum
- Tue May 02, 2023 9:47 am
- Forum: Drivers for External Components
- Topic: Micropython library for the TI INA219 voltage/current sensor
- Replies: 26
- Views: 180139
Re: Micropython library for the TI INA219 voltage/current sensor
Oh, I'm sorry, I noticed just now that I have added some confusion to this discussion. I found this topic when looking for an INA226 lib. And I found yours, Chris. Somewhere under this topic there is a mention of the 226, I mentioned it too in my post. But you, Chris, spoke of the 219, I think? Ever...
- Tue May 02, 2023 9:38 am
- Forum: Drivers for External Components
- Topic: Micropython library for the TI INA219 voltage/current sensor
- Replies: 26
- Views: 180139
Re: Micropython library for the TI INA219 voltage/current sensor
Hi Chris, on page 16 you have a table where a resolution of 2.5uV is mentioned for the shunt register. Also on page 24 they say Full scale = 81.92mV and LSB = 2.5uV I do not see where you find 10uV on p.5. Anyway, this datasheet is a mess! Totally confusing! Probably you should raise an issue agains...
- Tue May 02, 2023 8:15 am
- Forum: Drivers for External Components
- Topic: Micropython library for the TI INA219 voltage/current sensor
- Replies: 26
- Views: 180139
Re: Micropython library for the TI INA219 voltage/current sensor
I discovered a bug in the library: @property def shunt_voltage(self): """The shunt voltage (between V+ and V-) in Volts (so +-.327V)""" # no, +-80mV! value = _to_signed(self._read_register(_REG_SHUNTVOLTAGE)) # The least signficant bit is 10uV which is 0.00001 volts # NO!! It is 2.5uV # return value...
- Mon May 01, 2023 7:06 pm
- Forum: Drivers for External Components
- Topic: Micropython library for the TI INA219 voltage/current sensor
- Replies: 26
- Views: 180139
Re: Micropython library for the TI INA219 voltage/current sensor
Now as I wanted to document my work I noticed that I had done an error when calculating the Calibration value. I have Rs = 0.002 Ohm and Imax = 15A. That gives 0.5mA (rounded) for Current_LSB and 12.5mW for Power_LSB. From that I deduce CAL = 5.12mV / (Current_LSB) = 5.12/ (0.5 * 0.002) = 5120 With ...
- Sat Apr 29, 2023 9:29 am
- Forum: Drivers for External Components
- Topic: Micropython library for the TI INA219 voltage/current sensor
- Replies: 26
- Views: 180139
Re: Micropython library for the TI INA219 voltage/current sensor
Hi Chris, thanks a lot for the INA226 driver, and especially for the example in the code. If I had seen that at the beginning I could have progressed much faster! The datasheet is a pain to read, very confusing, mixing register values and electrical values, neglecting the units etc. Once I had disco...
- Mon Jan 16, 2023 4:52 pm
- Forum: Drivers for External Components
- Topic: Driver for ENC28J60 Ethernet chip
- Replies: 7
- Views: 83826
Re: Driver for ENC28J60 Ethernet chip
Thanks for your driver! I got it to work with my chip. However I have not enough knowledge (or maybe it is not possible / not easy) to make the Pico work like a PicoW, with the difference that it would be connected by cable. Not to speek of doing MQTT ... What would be needed is what is in the netwo...
- Fri Sep 30, 2022 9:03 am
- Forum: ESP32 boards
- Topic: SPI is not working with Infineon current sensor TLI4970
- Replies: 2
- Views: 23043
Re: SPI is not working with Infineon current sensor TLI4970
@ujur007
Have you got your sensor to work?
I have just now looking at a TLI4790 I had lying around and was wondering if there is a lib for it.
Have you got your sensor to work?
I have just now looking at a TLI4790 I had lying around and was wondering if there is a lib for it.
- Mon Sep 26, 2022 1:55 pm
- Forum: Raspberry Pi microcontroller boards
- Topic: Pico Mounting SD Card
- Replies: 41
- Views: 203653
Re: Pico Mounting SD Card
For my Analog logger project I always use this sequence:
- open file
- write data
- close file.
The idea was to avoid corrupt files.
Is there any inconvenient when doing it like this with an SD card?
- open file
- write data
- close file.
The idea was to avoid corrupt files.
Is there any inconvenient when doing it like this with an SD card?
- Mon Sep 26, 2022 1:41 pm
- Forum: Raspberry Pi microcontroller boards
- Topic: Pico Mounting SD Card
- Replies: 41
- Views: 203653