sparkfun / sparkfun/2D_Barcode_Scanner_Breakout
Scanner does not respond on TTL interface despite being in TTL mode.
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- 5
- Forks
- 2
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Description
Problem:
I am trying to wire the scanner to an Adruino MKR WiFi 1010 and run the Serial read example from the library. I have confirmed the scanner works properly over the USB interface and have scanned the POR23 barcode in order to place the scanner in TTL mode. My wiring is as follows:
Scanner Arduino
GND -> GND
3.3V -> VCC
TX -> 14 (TX)
RX -> 13(RX)
Pictures are also provided below.
Every time I upload the sketch, I get the "Scanner did not respond..." message. Only thing I have changed about the example is that I comment out all references to Software Serial as it constantly throws compilation errors. Instead, I use Serial1.
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First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start with the library's Serial read example and the reported substitution of Serial1 for Software Serial, then compare its expected serial connection with the listed TTL wiring and scanner mode. Done means the scanner responds over TTL instead of printing "Scanner did not respond...".
Written by the indexing model from the issue text.
Assessment
- Tech stack
- arduino
- Domain
- embedded-iot
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 30/100