Laowang 0.8 yuan 128x32 OLED display adapter board

### Introduction Laowang 0.8 yuan 128x32 OLED screen (4-wire SPI) adapter board 3.3V power supply screen female base model BM20B (0.8)-24DS-0.4V (51) provides a stm32f103c8t6 screen driver (based on Zhongjingyuan Electronics 0.87 inch OLED modification) purchased from TB [Laowang Electronic Digital DIY on the forum next door] ### Instructions for use* **This module only supports 3.3V power supply (LDO is omitted in the design)** * The communication protocol is 4-wire SPI * Driver chip For SSD1316, you can use U8g2 direct driver (the following is the initialization constructor of this screen) ``` U8G2_SSD1316_128X32_F_4W_SW_SPI u8g2(U8G2_R0, /* clock/scl/D5=*/ 14, /* data/sda/D7=*/ 13, / * cs/D8=*/ 15, /* dc/D6=*/ 12, /* reset/D4=*/ 2);//esp8266 ``` * If you have special needs, you can use the stm32f103c8t6 screen driver provided in the attachment (Based on the 0.87-inch OLED modification of Zhongjingyuan Electronics) * It is difficult to solder the screen motherboard (for me, a novice). You can buy 2-3 more to prevent mistakes during welding. * I am just a beginner. Electronics enthusiasts, it is inevitable that there will be flaws in the software and hardware design of the project. You are welcome to point it out in the comments. Thank you all in advance* If this project is helpful to you, you are welcome to like and comment ### Positive! [128x32_Front.jpg] ## # Backside![128x32_Back.jpg] ### Display effect![128x32_Display.jpg] ### Recently, Zatan accidentally came into contact with something related to "research price", and I feel like it has opened the door to a new world. I started buying like crazy, hoping that I could use it all after buying it (I was preparing for the exam recently, and I felt like it was about to become ashes). Only after purchasing did I know the value of the words "research price". Since I have a small personal need to use the screen on stm32g030f6, I hope to find a basic screen driver similar to that provided by Zhongjingyuan. After some searching, I found that SSD1306 has SPI but SSD1316 only has IIC. Unfortunately, there is no SSD1316_SPI. So I could only compare the data manuals and driver codes of SSD1316 and SSD1306 back and forth. I looked back and forth for about 1/2 hour, which roughly verified my idea. The two chips cannot be said to be exactly the same. It can be said that there is no difference. (Most of them only drive 128x32 OLED screens). When actually transplanting, open SSD1306_SPI and SSD1316_IIC, Ctrl+c, Ctrl+v, no more than 3 minutes for perfect transplantation (there must be defects). Another troublesome part of this screen is that it needs a corresponding female socket. Since my welding skills are not up to par, there were problems with soldering 3 of them at first. It was only after I mastered the skills that the display was successfully displayed (at one point I thought I had drawn the wrong board). Playing with these "research price" things is a real time-killer.