Search found 31 matches

by asen0v
Sat Jul 22, 2017 6:57 pm
Forum: Projects
Topic: Need advice: Metal detector with stm32f103
Replies: 50
Views: 3430

Re: Need advice: Metal detector with stm32f103

I bough it from AliExpress two years ago. The listing is not active anymore, but it is the same lcd as this one.
by asen0v
Sat Jul 22, 2017 4:12 pm
Forum: Projects
Topic: Need advice: Metal detector with stm32f103
Replies: 50
Views: 3430

Re: Need advice: Metal detector with stm32f103

Obviously there is some problem with this library when used with ST-Link. In the same thread ahull suggests better not to use JXXX pins. I used PB4 and after reading the ahull's suggestions I changed it with PA11, but it still does not work. Yes, that's why I told you about pinouts, PB4 is JNRST. I...
by asen0v
Sat Jul 22, 2017 1:33 pm
Forum: Projects
Topic: Need advice: Metal detector with stm32f103
Replies: 50
Views: 3430

Re: Need advice: Metal detector with stm32f103

Pito wrote:
Sat Jul 22, 2017 1:29 pm
The D15, S10, V10, B10 are the coordinates of the Treasure N.6 (of a large value ++) ? :P
No, this are the coordinates of a buried big dildo. You can go and dig it up ;)
by asen0v
Sat Jul 22, 2017 12:26 pm
Forum: Projects
Topic: Need advice: Metal detector with stm32f103
Replies: 50
Views: 3430

Re: Need advice: Metal detector with stm32f103

you've beaten me to it, so looks like standard 4bit setup you've disturbed pin 3 in some way. what is it wired to, normally its a pot, i suspect you've got it going to a pin for maybe pwm ?? 5 black blocks and the rest blanks has to be incorrect contrast voltage change your test for the display to ...
by asen0v
Sat Jul 22, 2017 11:55 am
Forum: Projects
Topic: Need advice: Metal detector with stm32f103
Replies: 50
Views: 3430

Re: Need advice: Metal detector with stm32f103

https://lh3.googleusercontent.com/25lr9SWWjTbjbGEG94lSiyBVoGBGqITsUQpqzc4R2c-plpRfPWErhuFZ6BS0urEi62yCwWGapsTcFNTB7ACeRwJ3KvGaAGpUpcOpzhw4TW3j-kI8CNGJpq0lqCZfcrxtvaQw13CEeQ=w851-h638-no After I flashed the bootloader it works again. So if anyone plans to use LiquidCrystal without bootloader, be car...
by asen0v
Sat Jul 22, 2017 10:09 am
Forum: Projects
Topic: Need advice: Metal detector with stm32f103
Replies: 50
Views: 3430

Re: Need advice: Metal detector with stm32f103

how did you program it originally ? have you a link to it as a project ? testing the display, literally just the lcd transplanted to a nano already wired for the display? black blocks and blanks to me suggests the contrast control, did you use a pot ? stephen 1. Originally I programmed it from the ...
by asen0v
Sat Jul 22, 2017 9:00 am
Forum: Projects
Topic: Need advice: Metal detector with stm32f103
Replies: 50
Views: 3430

Re: Need advice: Metal detector with stm32f103

any signs of leakage? battery flat ? what doesn't work, the whole thing, the stm32 or the display(not clear if its that you tested with the nano) ? does blink work ? maybe you left a blink the led function in the code ? ok you can't see it, but its only a few mA's. to the tone generator for the nex...
by asen0v
Sat Jul 22, 2017 7:42 am
Forum: Projects
Topic: Need advice: Metal detector with stm32f103
Replies: 50
Views: 3430

Re: Need advice: Metal detector with stm32f103

I opened the box and took the display out. It works with arduino nano. I saw this thread http://www.stm32duino.com/viewtopic.php?t=1501 . Obviously there is some problem with this library when used with ST-Link. In the same thread ahull suggests better not to use JXXX pins. I used PB4 and after read...
by asen0v
Fri Jul 21, 2017 7:17 pm
Forum: Projects
Topic: Need advice: Metal detector with stm32f103
Replies: 50
Views: 3430

Re: Need advice: Metal detector with stm32f103

martinayotte, thanks for the answer. I use SWCLK/SWDIO only for programming and not as GPIOs.

The LCD is connected as folows:
RS - PC13
E - PC14
D4 - PB4
D5 - PB5
D6 - PB6
D7 - PB7
LED - PA10 (using PWM to adjust)
LED - GND
VO - GND

Looks like I will need to open the damn box :(
by asen0v
Fri Jul 21, 2017 5:52 pm
Forum: Projects
Topic: Need advice: Metal detector with stm32f103
Replies: 50
Views: 3430

Re: Need advice: Metal detector with stm32f103

Hi guys. After one month of using this machine underwater I decided to change the sound frequency, because I can hear better the lower frequencies when underwater. When I closed the box several months ago I put a waterproof connector connected to SWCLK, SWDIO, GND and VCC. It was meant to be used wi...