Mobile data terminal that runs off 2xAA batteries with 128x128 GLCD, 125Khz EM4100 RFID, BarcodeReader and Lora communications. Based on the new ATMega 4809 Note, this is based on my original PIC16F18857 design which has been working quite well, the only thing that has changed is to replace the microcontroller with the new ATMega4809. The total BOM cost for this board is well under $99 even paying for single qys so it should make a nice data collection platform for fans of the AVR eco system. Note the PIC version ran quite happily for several weeks of normal use on rechargable AA batteries, I expect the new ATMega should achieve similar sleep current. The UPDI interface is non-standard and connected to the Atmel ICE programmer using flying leads or a custom cable. I am working on transfering my PIC code from MPLAB to Atmel Studio this should take a few weeks once I have the board back from the fab. I have attached a picture of the insides of my PIC version so you can see how it all fits together, I will update this picture with the actual unit once its done. really looking forward to working with this new chip.