ESP-01 Barcode Scanner with MAX3232
Posted: Tue Jul 26, 2022 7:12 pmHi, i started this project because i needed a way to quickly upload barcodes to a mysql database, i had tons of USB barcode around and i noticed some of then had "RS232" capabilities by using a diferent cable.
After some trial and error i come up with using a ESP-01S, a I2C display, a MAX3232 mini converter board, a AMS1117 3.3v regulator, a passive buzzer and a T6845-C powerbank board and a 18650 3.7v lithium battery.
The T6845-C was perfect because it had the female USB Type-A to plug in the barcode reader and had the 5v step up built-in for the reader and the 3.3v regulator.
Wiring
Building
Project page and code:
https://github.com/Shivansps/esp-01-barcode-scanner
For the "revised version" im going to fit all electronics inside the reader itself and only the screen will be on the outside. The 18650 batt fits perfectly on the handle.
After some trial and error i come up with using a ESP-01S, a I2C display, a MAX3232 mini converter board, a AMS1117 3.3v regulator, a passive buzzer and a T6845-C powerbank board and a 18650 3.7v lithium battery.
The T6845-C was perfect because it had the female USB Type-A to plug in the barcode reader and had the 5v step up built-in for the reader and the 3.3v regulator.
Wiring
Building
Project page and code:
https://github.com/Shivansps/esp-01-barcode-scanner
For the "revised version" im going to fit all electronics inside the reader itself and only the screen will be on the outside. The 18650 batt fits perfectly on the handle.