UKHAS badge board with RFM22, Arduino328 with 8Mhz external crystal (no brownout) running off a 1.8v MCP1700 regulator, 2.5V 10F supercap in parallel to badge board. Charged initially by 3.7v lipo to 1.8v and then this supply is removed either to run off the supercap or the solar panel.

• 50baud, 1 string every minute, under a lamp indoors
  • Just Cap = 5mins 36secs
  • Solar Cell = 18mins 49secs
• 300baud, 1 string every minute, under a lamp indoors
  • Just Cap = 12mins 21secs
  • Solar Cell = Continuous