Search found 257 matches

by Slammer
Mon Jan 08, 2018 12:41 am
Forum: General discussion
Topic: ESP32 board with almost BluePill factor
Replies: 11
Views: 381

Re: ESP32 board with almost BluePill factor

not visible on aliexpress with simple search srp I bought it from bsfrance.fr because of fast delivery in EU, (paying something more...) but now is not listed in their site. It seems that this board did not gain popularity and only some sellers in Ebay are still selling it (search ESPio32 in ebay)....
by Slammer
Sun Jan 07, 2018 12:33 pm
Forum: General discussion
Topic: ESP32 board with almost BluePill factor
Replies: 11
Views: 381

Re: ESP32 board with almost BluePill factor

There is also another board with slim factor, the ESPio32. It is not very common but you can find it on ebay for about 12$, still more expensive than other boards (like DoIT for example). I bought it some months ago and is OK, but it has some problems with autoreset function, most of time does not w...
by Slammer
Wed Nov 22, 2017 10:41 pm
Forum: General discussion
Topic: ST-Link Vs Jlink
Replies: 15
Views: 389

Re: ST-Link Vs Jlink

Rick Kimball wrote:
Wed Nov 22, 2017 9:10 pm
When you say it isn't toy .. what makes it not a toy?
The price, I think.... I totally agree with you about the pricing policy of JLink.
I am also using BMP with Eclipse and gdb and it is OK.
by Slammer
Wed Nov 22, 2017 8:59 pm
Forum: General discussion
Topic: ST-Link Vs Jlink
Replies: 15
Views: 389

Re: ST-Link Vs Jlink

Original JLink is not a toy... costs about 300$ for basic version and 500$ for Plus, it is unfair to compare it with the ST-Link. Actually ST-Link is an ISP interface with some debugging abilities and JLink is a professional JTAG.
by Slammer
Wed Nov 22, 2017 8:07 pm
Forum: General discussion
Topic: ST-Link Vs Jlink
Replies: 15
Views: 389

Re: ST-Link Vs Jlink

Personally, I found BMP more convenient than others. I like also the embedded usb to serial interface. For professional use, specially for debugging, I think that JLink is the way to go, as it is the industry standard and is officially supported (eg. Eclipse, ARM plugin, etc...). For hobby use, and ...
by Slammer
Wed Nov 22, 2017 8:28 am
Forum: General discussion
Topic: ST-Link Vs Jlink
Replies: 15
Views: 389

Re: ST-Link Vs Jlink

and the Black Magic Probe.... (aka BMP) Is another type of SWD adaptor but... - It is open-source/open hardware. - Includes debugging functionality as gdb server ( replaces stlink+ocd ) - Includes an UART interface - Supports non STM chips. Actually you can transform to BMP any STM32F103 board with ...
by Slammer
Wed Nov 15, 2017 12:02 am
Forum: Postbag
Topic: Rogers postbag
Replies: 94
Views: 6706

Re: Rogers postbag

Roger, watch the video of Andreas Spiess about small solar chargers, you will find measurements for most common modules, is a very good review.

PS. Dont forget to watch and the second video of review : https://youtu.be/ttyKZnVzic4
by Slammer
Wed Nov 08, 2017 12:44 am
Forum: Black Magic Probe & other
Topic: BMP bleeding edge binary for bluepill
Replies: 4
Views: 523

Re: BMP bleeding edge binary for bluepill

Thanks Rick.

BMP is very convenient, I am using 2 Bluepills on a breadboard, one as BMP and the other as Target, with just one USB cable I have everything... very nice!
by Slammer
Wed Oct 25, 2017 11:15 am
Forum: STM32F103 Boards
Topic: [SOLVED] Can you "break/burn" the i2c ports?
Replies: 10
Views: 310

Re: Can you "break/burn" the i2c ports?

I have used many times this small screen with Blue Pill without problems, but always with Pullup resistors and voltage shifter. Pins PB8 & PB9 are 5V tolerant so there is no fear to burn them with 5V. If you want to test the circuit fast, put at least pullup resistors 4K7 connected to 5V and try aga...
by Slammer
Wed Oct 25, 2017 10:52 am
Forum: STM32F103 Boards
Topic: [SOLVED] Can you "break/burn" the i2c ports?
Replies: 10
Views: 310

Re: Can you "break/burn" the i2c ports?

First you have to use 2 resistors (2K2-4K7 value) connected to each of I2C pins to 3.3V

In your circuit you are using this display which is 5 Volts logic, normally you have to use a proper voltage shifting circuit as pins of STM32 are 3.3V.