Search found 1515 matches

by ahull
Mon Jun 26, 2017 1:08 pm
Forum: General discussion
Topic: does stm32f1 gets too hot in a project box? and temperature sensor
Replies: 6
Views: 83

Re: does stm32f1 gets too hot in a project box? and temperature sensor

I suspect that since the STM32F103 can operate in excess of 100 deg C and since I've never managed to get one more than slightly warm to the touch, then assuming your operating environment is reasonably cool, you should be fine. There is an on-die temperature sensor which your software can test peri...
by ahull
Sun Jun 25, 2017 4:03 pm
Forum: STM Nucleo boards
Topic: STM32F091 ADC resolution 10 bit instead of 12 bit
Replies: 17
Views: 149

Re: STM32F091 ADC resolution 10 bit instead of 12 bit

Image

What no magic smoke... I'm almost disappointed. ;)
by ahull
Sun Jun 25, 2017 2:38 pm
Forum: STM Nucleo boards
Topic: STM32F091 ADC resolution 10 bit instead of 12 bit
Replies: 17
Views: 149

Re: STM32F091 ADC resolution 10 bit instead of 12 bit

If they are 5V tolerant (remember the STM32F103 is a 3.3V device, not a 5V one), then they will stay at the maximum value, and when you rotate the wiper back towards gnd, the value will start to drop again. If they are not 5V tolerant, there will be a lot of heat, perhaps some smoke, and you will e...
by ahull
Sun Jun 25, 2017 2:25 pm
Forum: STM Nucleo boards
Topic: STM32F091 ADC resolution 10 bit instead of 12 bit
Replies: 17
Views: 149

Re: STM32F091 ADC resolution 10 bit instead of 12 bit

One more question, I defined the ADC on port A0 in my code, and it works fine when I connect a voltage to A0. But if I plug my wire into A1 for example it also shows me that ADC value even when I didn't tell my code to do that. Is this normal behaviour? I don't understand the question. It "shows yo...
by ahull
Sun Jun 25, 2017 10:25 am
Forum: STM Nucleo boards
Topic: STM32F091 ADC resolution 10 bit instead of 12 bit
Replies: 17
Views: 149

Re: STM32F091 ADC resolution 10 bit instead of 12 bit

NOTE: Looking at the API documentation, it seems that changing the resolution using analogReadResolution(X) merely changes the resolution of the result. A 12 bit read will still be performed, in the case of the STM32FXXX ADCs. In other words, lowering the resolution will not result in faster analog ...
by ahull
Fri Jun 23, 2017 7:15 pm
Forum: Welcome & FAQs
Topic: Saying hello from turkey
Replies: 7
Views: 125

Re: Saying hello from turkey

Data sheet for the HX711 is -> here <-
by ahull
Thu Jun 22, 2017 8:54 am
Forum: Hardware
Topic: No fix on u-blox neo 6m
Replies: 33
Views: 1134

Re: No fix on u-blox neo 6m

People sometimes post to the libraries section if they have ported a library, or if they find a particular library works with no changes. I should probably formalise this. I should probably do something similar for hardware, e.g. I tried one of those H Bridge motor controllers the other day, and it...
by ahull
Wed Jun 21, 2017 1:38 pm
Forum: General discussion
Topic: Speed sensor, need advice, How many pulses Per Rotation?
Replies: 5
Views: 100

Re: Speed sensor, need advice, How many pulses Per Rotation?

Pulses per rotation.. I suspect anything above and including one would be sufficient. Adding more pulses would give better resolution, at the expense of additional interrupts per rotation. Your ISR would then simply record something simple every pulse (milis-last reading perhaps) and it would be up ...
by ahull
Tue Jun 20, 2017 1:30 pm
Forum: General discussion
Topic: Combining Blink & Count to the bootloader
Replies: 33
Views: 347

Re: Combining Blink & Count to the bootloader

How about spewing the build info about the bootloader on the serial output? Something like: "Success! Bootloader version blah and blah is installed." Then maybe spew out the information about the leds used and buttons used? And a short tutorial on how to use all the features. Good move, the tutoria...
by ahull
Tue Jun 20, 2017 12:35 pm
Forum: General discussion
Topic: Combining Blink & Count to the bootloader
Replies: 33
Views: 347

Re: Combining Blink & Count to the bootloader

As I understand it, the idea is to include the blinky, so that people are less uncertain about whether the booloader worked or not. Currently if you install just the bootloader, and fire the board on your PC, the serial port does not show up, and there is really nothing to suggest you were successfu...