MakerFocus 2pcs I2C OLED Display Module 0.91 Inch I2C SSD1306 OLED Display Module Blue I2C OLED Screen Driver DC 3.3V~5V for Ar duino

I used the Adafruit SSD 1306 Libraries, which were fantastic. They have a low power consumption and are very visible. br>For the adafruit library examples, they are truly extravagant. There is no "hello world" in essence, so a basic starting point can be found by searching for a hello world example for libraries on Google. Also, put the display in display to rotate it 180 degrees. setRotation(2) is a function that allows you to set the rotation of your object during the setup The following is a list of the most common uses for those libraries. display br>br>br>br>br>br>br>br>br>br>b the_display() method br>display is a word that has a lot of different meanings depending on who you clearDisplay() is a method for clearing the display. br>display is a word that has a lot of different meanings depending on who you setTextSize(1-), setTextSize(2-), setTextSize( br>display is a word that has a lot of different meanings depending on who you setCursor(0); setCursor(1); setCursor(2); setCursor(3); set // Text display's originbr> ("blah") print("blah") print("blah") print("bla br>display is a word that has a lot of different meanings depending on who you println("-") + println("-") + println added to the end of the last word blah, then a new line"); br>br>In terms of hardware, the displays are small and pleasant to look at. The breadboard is 4 rows high, then about 12 slots wide (that's the whole board). The voltage range is impressive, and it appears to operate at less than 3. I'm using it on 4 instead of 3. There are no issues with a 5v supply. (The Arduino receives 5 volts from the wall via a diode. ) It takes approximately 5 milliamperes (ma). I'm sure you could get a whole pro mini project to run on less than 3ma standby while keeping the display on with a watch dog timer and adjustment. The display refreshes quickly, and no multiplexing or flicker is detected by the cameras. They didn't come with headers, but the plated through holes are well-made and accept solder well. It's strong because the holes are close together. Desoldering these will be difficult, so do some research on how to remove header pins to make your life easier! Please give it a thumbs up if you found this review to be helpful. D I believe this was a common question.

Arabella Duran

| Nov 19, 2021

It runs on the SSD1306 display driver and uses the widely used I2C bus. A text output of 128x32 pixels is sharp and crisp. I'm quite pleased with them. This is a great way to add a small LCD to your project; instead of using a large, bulky backlit LCD, use this instead! MakerFocus has a wide range of products that I've purchased, and they're always high-quality. If you want to use this with ESP Easy firmware, you'll need to modify the plugin to include 128x32 size, which it doesn't have yet as of 2. 0 dev- The patch to enable that size, on the other hand, is available and should be merged in the next release.

Maggie Fry

| Jul 23, 2021

Update 1: br>I'm currently looking into why I'm still having issues with this device; since posting, I've discovered that, at least with the NodeMCU8266, pull-up resistors are required. In contrast to my initial assessment, up resistors may not be required. (In fact, the schematic diagram in the image gallery appears to show that they are built in. ) ) I confirmed that the device can be used with an Arduino Uno, so it appears to be 3v3 and 5v compliant, as stated. The Uno, on the other hand, is only functional if a 4 is present. Pulls a 7kOhm resistor- Strangely, I'm going up the SCL line. br>br>However, I can't get it to work consistently, and it's not clear that this display module is to blame; it's time to break out the logic analyzer and see what's up. br>br>I'm temporarily changing my rating to four stars because a) it may work as expected, and b) the vendor has been extremely helpful in attempting to resolve the problem amicably. They are good people who can be trusted. (As an aside, they've stated that they've asked their supplier to include headers, but haven't received a response. ) In any case, this isn't a crucial point. )br>br>**
br>I'm going with number two. This is a four-star review. I got two of them - one for each of my children. Both of them are effective. br>br>1) I can sympathize with R's annoyance. Review by Arnold. The Adafruit library, on the other hand, works in sample code (ssd1306_128x32_i2c). However, a good understanding of I2C is required. It took me a long time to figure out what I needed to know. Had a score of 8266 out of a possible 3000. 3v) as a microcontroller, with an Adafruit temperature/humidity sensor and an I2C bus display. I was aware that I2C necessitates the use of pull-in connectors. up resistors on the SDA/SCL lines, but the sensor has a built-in pull-up resistor. You only need one set of push-ups in theory. The sensor worked fine, and I was able to detect both devices using the Adafruit library's I2C scanner code. However, the display did not come to life until I increased the number of resistors from three to two. 3 volts to the SDA and SCL - Of course, one for each person. Yeah! (I went with four. ) 7kOhm - YMMV. ) I'm not sure why the display's I2C address was detected on the bus but nothing was displayed without the additional resistors. Even so, including a rough schematic in the package would aid debugging, especially for those who are unfamiliar with I2C. br>br>(BTW, the Adafruit library's reset pin appears to be optional, and can be changed from "4" to "LED_BUILTIN" in the source, at least on an 8266. ) )br>br>2) Without a strong reader, I don't think the text is very legible. It's crisp, but it's a tad on the small side. br>br>3) There are good economic (seller) and utility (buyer) reasons for not pre-selling. Soldering headers is a process that involves the joining of two or more pieces of Is it, however, too expensive to throw in a few 4-footers? pinners? There are no mounting holes! br>br>4) There are no mounting holes!.

Alexa McCarty

| Mar 09, 2021

Two of them were purchased - They're both useless. DOA. I bought these a few months ago and put them aside because I had a lot on my plate at the time, and the prototype of my project/invention wasn't ready for these OLED screens to be installed and implemented. br>br>I'm the one who should have tested them when I first got them. br>br>Now I'm out of luck because I've passed the return window. To make matters worse, I had already 3d printed the enclosures and front panels with the hole/space for the. OLED screens with a diagonal of 91 inches. Argh. br>br>As I previously stated, I was incorrect in not testing them first; the customer reviews for these OLEDs were extremely positive, and I simply assumed that everything would be fine. Now I'm cursing myself for leaving those holes in my front panels with nothing to put in them. In addition, due to everything else that has happened this year, I am completely broke and out of money right now - I can't even afford to replace the ones that are missing. br>br>I suppose the moral of my rambling is to ALWAYS test new components and electronics when they arrive - Exceptions are not permitted.

Heaven Wells

| Nov 14, 2021