Wishlist for a custom Transmitter board

help me :3

I head the same board with the same LCD, realy wanted to make a pistol radio, but it did not work...
I also used the same boot-loader and firmware, USB flash disk worked sometimes...

yes,sometimes speaker work 'tit' tit' ,but lcd not work,some time speaker not work, i don't understand :3
i try oled spi 0,96 ich with arduino ,it work

Witch flash are you using?

I heave w25q32 witch is not original Devo 7e.

I have used code from github.com/silpstream/deviation and adopted it for use with maple mini + hp4067 + ssd1306 lcd. And it works.
I reccomend you get code from link above, check pins in code and in your hardware and compile it by yourself.
My own expirience with ssd1306 says me that you have problem with reset pin. I have got same trash on lcd with it. Check it twice and solder.

@phamminh
Your display has only 6pins. Cs is missing to PB0. I think I had the same.

Check the datasheet and make the right connections.

i check my oled,pin cs shorted gnd. i use arduino test my oled is still running,

i use stock flash 25q16 ,usb work .i coppi system
Initially it was displayed, but failed as shown, then it has dotted dots, and now it's not up anymore, my circuit still works, every time my plugged in speaker power is still working.
pin cs on the board has oled itself connected to gnd whether there is a problem

I checked, reset pins (pb1) are still connected vs chip, not open circuit

it's connected to the power, sometimes it works, but the power out, plug it back to not run, you can help me
my vidieo i test : drive.google.com/file/d/1xV66JGxVilhgkx5...R0X/view?usp=sharing

So you did connect CS?
As far as i know is Reset on the lcd-board not connected direct. Can you check if it has a transistor between display and connector?
Are BS0, BS1 and BS2 connected to GND?


Is PA3 on the STM32Board connected to GND?

iI checked the ssd1306 schematic, I connected the cs out and checked the pin reset, no intermediate transistor, BS0, BS1 and BS2 connected to GND.
sometimes when i connect a3-gnd, c7-b6, power plug several times it pops up the board, but rarely it up, most of it is jamming not show anything

In addition to the above settings do not know if I have to modify any more hardware, or I missed something important
we oled
scl-a5
sdl-a7
res-pb1
d / c-c5
cs-pb0
usb: a3-gnd, c7-pb7, get usb and i copied the system to, i hear the tit sound

I have opened my transmitter now.


I know that it works. U3 and R10 got removed, and the cs wire soldered to the cs pad.
Do you have another display? There are so many versions.

Occasionally oled is showing but faulty, most of them are faulty. i use this oled,
i uploaded the bootloader with usb uart. i replaced the 2 boards but the result did not change, instead oled but still the same,
is it my firmware, please give me your firmware, i thank, this is the firmware I use.
please help me

Hello
The firmware I used is still available in this thread.
Today after work I tried to redo the steps needed, but with hardware i had available(STM32VCT6 with SH1106display and sst25vf16).
3,3V Flash WP and HOLD
PA5 Display and Flash SCK
PA6 Flash MISO
PA7 Display and Flash MOSI
PB0 Display CS
PB1 Display RESET
PB2 Flash CE
PC5 Display DC

With usb-Serialadapter to PA9 and PA10, Boot0 jumper to 1: with FlashLoaderDemonstrator -flash Bootloader Devo7E_256.
When finished --disconnect Serialadapter.

I set Boot0 Jumper to 0, and i removed Boot1 Jumper.
Connect Usb(STM Device in DFU mode appears in DeviceManager)

With Walkera DFuse Usb Upgrade Tool: open file deviation-devo7c-v5.0.0-89af59c.dfu -press upgrade -when finished -disconnect Usb
Connect PC7 to PB6(ENTER Button) and connect usb.

USB Drive appears -- Copy filesystem (Description in the Forum) -- disconnect the board.

Disconnect PC7 to PB6, and connect PA3 to GND.

Connect Usb -- Display shows up everytime i power the board.(but not perfecly alligned, cause it is SH1106).

deviation-devo7c-v5.0.0-89af59c is for testing without CYRFmodule connected.
deviation-devo7c-v5.0.0-22d3bed is fully working (With no module: Display is working with missing module on the screen, and the board reboots when you press a button)

When i made my transmitter, i removed all the components on the development board, that i didnt need. Maybe that helps.

If not: then my advice would be to get a 7pin SSD1306, or you are able to change the code and compile yourself. I know the 6pin display works with Arduino Adafuit library.

I see the same firmware because there is another connection. My board st32f103rct6 whether to work with firware.
firmware: deviation-devo7c-v5.0.0-89af59c work for sh1106? i has many ssd1306 ,but it not work true

You are right, I made a mistake. I have corrected my error C5 instead of C7.

I think this firmware works with every stm32f103 with at least 256kb flash memory. I can confirm it works with rct6, ret6 and vct6.

The display sh1106 is shifted a few pixels to the left, and is showing a vertical line on the right side. ssd1306 works perfect, if all connections are right.

i buy new oled sh1106 ,i flash firmware.
i connect c7 vs b6, a3 vs gnd it worked, but stripped to the right, do not know when your into usb mode it has been so no, my current sst25vf016 flash is broken so ce should not coppy system is

i work,i used sh1106,
but it is deviated by 2 pixels,
However, I feel very happy that it has worked well,
Thank you everyone for helping me.