Gm60 Scanner
[email protected] 2023-05-28 22:03:46 412 Views2 Replies Hello all,
I am new to the community and to ALL Arduino. I wanted to create a barcode scanner that goes to google sheets. I have seen countless videos on diff ways. I purchased a gm60 round ring scanner and have an ESP 8266(Not Firebeetle). In just
looking at the connections. The lcd 12c(which I would use) connects to D1 and D2 BUT the Gm60 also
needs D2 (GPIO 4). How would that work? Can I use another set of GPIO pins on the 8266 for the GM60? Do I NEED the Firebeetle 8266 b/c of some special architecture. please advise
again, I apologize if this is an obvious question
I have an ESP32 also and hooked it up as I2C on pins 21 and 22 (default I2C for ESP32) and I never get a response from the scanner. I tried UART also and still no response. Any suggestions on how to get this resolved? I have two of these devices and neither one works at all. I am getting a signal on my oscilloscope from the I2C wires but the ESP32 (or your demo code) seems to not be able to use the incoming signal.
CharlesGiddens Hello Michael:
If you need to use multiple i2c devices on a motherboard at the same time, you can use an i2c hub to expand the onboard interface.This is perfectly fine as long as the i2c devices you are using do not have conflicting addresses.
i2c hub:
https://www.dfrobot.com/product-2179.html
Yeez_B 