Jamiestyles
New Member
Hi all,
Any thoughts on the following?
I have built an RFID reader to be used in cross country races. The device saves RFID tag numbers with a timestamp into a CSV file on a VDrive2.
I developed it using the serial OLED 20x4 screen available on the picaxe store and it worked fine. It was powered by 3xAA batteries and the RFID range was about 10cm.
I then swapped the screen to a 16x2 OLED screen, again from the picaxe store, and the RFID stopped working. When I unplug the screen it worked fine, when I went back to the 20x4 screen it worked fine, but when the 16x2 screen was replaced it stopped.
I plugged the board into a mains power supply and the RFID reader worked with the 16x2 but the range was 0cm and only if I orientated it multiple times.
I feel it must be a power supply issue; however, I would have thought that the 20x4 OLED would be more power hungry than that the 16x2.
Any other ideas what it may be? I much prefer the 16x2 screen for the project, but it currently makes the project stop working..
Thanks for any advice and thoughts in advance.
Best wishes
Jamie
Any thoughts on the following?
I have built an RFID reader to be used in cross country races. The device saves RFID tag numbers with a timestamp into a CSV file on a VDrive2.
I developed it using the serial OLED 20x4 screen available on the picaxe store and it worked fine. It was powered by 3xAA batteries and the RFID range was about 10cm.
I then swapped the screen to a 16x2 OLED screen, again from the picaxe store, and the RFID stopped working. When I unplug the screen it worked fine, when I went back to the 20x4 screen it worked fine, but when the 16x2 screen was replaced it stopped.
I plugged the board into a mains power supply and the RFID reader worked with the 16x2 but the range was 0cm and only if I orientated it multiple times.
I feel it must be a power supply issue; however, I would have thought that the 20x4 OLED would be more power hungry than that the 16x2.
Any other ideas what it may be? I much prefer the 16x2 screen for the project, but it currently makes the project stop working..
Thanks for any advice and thoughts in advance.
Best wishes
Jamie