But it didn't work with Arduino UNO WiFi REV2 as far as i tried.
Is it impossible?
2023-05-31 19:19:31
When downloading code, the running/programming mode switch must be OFF, otherwise the download will fail. After the download, switch to ON to allow the shield to work.
If that still doesn't solve the problem, please upload a wiring picture.
kumakuma 2023-05-30 20:01:10 542 Views1 Replies 
RS232 Shield for Arduino DFR0258