** Unfortunately there is packet loss on the NRF24L01+ with this design. Using jumper wires to increase the distance between ATmega and NRF24L01+ stops the packet loss. Another option is to put tinfoil between the NRF24L01+ and the ATmega**
ATmega328 board with NRF23L01+ and I2C for reading BME280 sensor data while running on 3 x AA battery
- ATmega328 runs without external crystal (8 MHz)
Compact speedometer with OLED display and temperature measurement.
It features an ATtiny85 uC with USB programming and battery charging and protection circuitry. I will be using it to measure the speed of my bicycle and determine the temperature around me on my rides.
The project consists of 2 pcbs: the sensor that will be mounted on the wheel of my bike and the actual speedometer.