Search found 251 matches

by Slammer
Wed Nov 15, 2017 12:02 am
Forum: Postbag
Topic: Rogers postbag
Replies: 86
Views: 5347

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: 1
Views: 111

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: 199

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: 199

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.
by Slammer
Mon Oct 23, 2017 2:29 pm
Forum: New users MUST post here first, and let us know a bit about you and your projects
Topic: Hello there (Nafpaktos / Greece)
Replies: 6
Views: 164

Re: Hello there (Nafpaktos / Greece)

Use a cheap ST-Link interface (or the STlink from a nucleo board) or a Black Magic Probe with blue pill, anyway using SWD for download (and debug) it's much easier. You can also transform a Blue Pill to Black Magic Probe very easily. Always I had problems using bootloader with USB CDC... (no consist...
by Slammer
Sat Oct 21, 2017 4:28 pm
Forum: Off topic
Topic: Making your own pcb's.
Replies: 20
Views: 629

Re: Making your own pcb's.

My concern about halogen ovens is about stability (eg. vibration) of rack inside oven and how this affects the pcb. For reflow I have used an Electic Crepe Maker (hot plate actually) with very good results. Crepe Makers have acceptable flatness and temperature distribution.
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by Slammer
Fri Oct 20, 2017 12:32 am
Forum: Off topic
Topic: Making your own pcb's.
Replies: 20
Views: 629

Re: Making your own pcb's.

Andy Brown is using common halogen oven with STM32 based controller.
Take a look : http://andybrown.me.uk/2014/05/11/awreflow
by Slammer
Thu Oct 19, 2017 6:54 pm
Forum: STM32generic
Topic: STM32GENERIC Arduino implementation
Replies: 19
Views: 1061

Re: STM32GENERIC Arduino implementation

It seems that he is active in a Chinese forum : http://bbs.mydigit.cn/u.php?uid=1023450 informing about the progress of the project.
by Slammer
Wed Oct 18, 2017 9:48 pm
Forum: New users MUST post here first, and let us know a bit about you and your projects
Topic: Hello there (Nafpaktos / Greece)
Replies: 6
Views: 164

Re: Hello there (Nafpaktos / Greece)

Welcome Nikos.
We are at least three from Greece...

Actually Nafpaktos is very nice city....
by Slammer
Sun Oct 01, 2017 8:14 pm
Forum: General discussion
Topic: BluePill on Hackaday again
Replies: 14
Views: 723

Re: BluePill on Hackaday again

All these are part of arduino hype....
Too many boards, most of them just a marketing trick of some companies to include the "arduino" mark on their products. Except AVR based arduino and less for zero/due, all others are overpriced, mostly unsupported and not commonly used.