What is it?

This is a perfect replacement board for Atmega328P projects with Lora. The Atmega1284P offers 128KB flash and 16KB SRAM while maintaining the easy of use of the Atmega328P based boards. Most sketches can be used with only minor or no changes.

What makes it special?

• Arduino compatible & preloaded Optiboot bootloader (MightyCore)
• Atmega1284P @ 8MHz with 128KB flash and 16KB RAM, easy replacement for Atmega328p boards
• Ultra low power consumption, down to 200nA (0.2μA) with TPL5010 as watchdog with direct VCC supply and without RFM95 module
• For more power consumption numbers, please check out the github page
• Small form factor, 36.5mm lenght, 31.5mm width
• TPS782 low quiescent 500nA regulator
• RFM95 can be soldered to the bottom side
• Wire antenna, helical antenna, SMA antenna support
• TPL5010 can be used to wakeup the Atmega, with optional watchdog function
• Voltage divider on board, enabled through two MOSFET driven by a pin
• I2C and 1-Wire pullups on board
• Input pin for interrupts with pullup resistor on board
• Two GND pins can be powered on/off through a MOSFET driven by a pin

Please check out the documentation and examples on Github: https://github.com/IoTDevicesCH/LoraMidiAtmega1284P

What do I get?

You will get an assembled board like in picture 2, design changes (like part placement) are possible over the time, pinout and footprint will stay the same! All SMD components on the top are assembled, except the reset button. The solder jumper to enable the LDO is per default connected, so the LDO will be on per default.

Options:

• You can order the top reset button as an option, it will then be hand soldered to the board before shipping.
• The TPL5010 is pre soldered to each board, but without any timing configuration. You can chose a timing configuration as an option, then the resistors or the potentiometer will be hand soldered to the board before shipping. Also the solderjumper to enable the TPL5010 will be soldered so you can start right away! The TPL5010 reset function is always disabled on all boards.
• You can order the bottom reset button connected to the TPL5010 for manual reset, it will then be hand soldered to the board before shipping.
• You can order a RFM95 module, it will NOT be soldered to the board!
• You can order a helical antenna, it will NOT be soldered to the board!
• You can order headers, they will NOT be soldered to the board!

Shipping informations

Your order will be shipped from Switzerland with the Swiss postal service and will be processed normally within 5 working days. Delivery time depends on your location, customs processing speed of your country and your local postal service speed. Normally it will take from 5 to 30 working days. Value will be declared correctly on all orders and you might need to pay customs costs and import taxes.