9V USB Rechargeable Li-ion Battery Charging via micro-USBBuilt-in Charger circuitry- just plug to your PC USB or USB charger/AdaptorState-of-charge push switch with 4-level LED indicatorsTerminal Voltage - 8.4V Charge, 7.4V Nominal, 500mA-HrDischarging current: 900mA MaxDischarging cutoff voltage: 5..
0-12.5MHz Direct Digital SynthesisSine/Triangle/Square wave Function GeneratorBased on AD9833 ChipSPI Interface This is a AD9833 breakout board.Additonal support components are needed to build a complete stand alone Function Generator
GPS Module with AntennaUblox NEO-6M GPS ModuleHigh Sensitivity Active AntennaWith battery backup for quick GPS lock
On this example, it needs 10k ohms and 4.7k ohms resistor to the RX pin.
Tiny GPS Library