These are not build instructions but build concepts.

Goal #1: Power a Sparkfun Artemis board on 4 Powerfilm LL200-2.4-75or 3-37 (x2 or x4): 

by using: 

1. Sparkfun Artemis board https://www.sparkfun.com/products/15443

and

https://www.powerfilmsolar.com/products/development-kits/solar-development-kit  (DEV-BASIC)

uses BQ25570 and includes (2) LL200-3-37 Indoor Solar Panel with 6” leads

or https://www.powerfilmsolar.com/products/development-kits/aem-pf-evk-solar-development-kit-with-e-peas-pmic 

uses AEM10941 harvester:

• AEM-PF-EVK Dev Kit PCBA (and includes (2) LL200-2.4-37 Indoor Solar Panel with leads) 
• a battery can be used in place of the supercapacitor. This image was used to demonstrate the panels can be wired in parallel. Earlier in the video they use a 40mah battery, which could be used here, or a larger one (100mah), for example.

Additional panels can be purchases separately from Digikey & Mouser. Other BQ25570 chargers include Mikroe-2814:

https://www.arrow.com/en/products/mikroe-2814/mikroelektronika?gclid=Cj0KCQiAmfmABhCHARIsACwPRADBziDNW74RhE4C6A4Bf8bEsCRlMSrswfLfvO-a-cDouq-HHLcOQ2MaAhDSEALw_wcB

and off-brand BQ25570: https://www.ebay.com/itm/184366178954 

A Tindie seller for AES10941 https://www.tindie.com/products/jaspersikken/solar-harvesting-into-li-ion-battery/

Demo: 

By accomplishing this goal, it can be demonstrated that not just a bluetooth sensor, but a microcontroller capable of running GUI-based applications on a number of solar panels inside continuously, without relying on sleep programming. The goal of this is to be a computer that one can access and see a stream of emails incoming, and not it have to shut off for long boot up times.

Jasper Sikken, who sells an AEM10941 harvester on Tindie, has said on his project page (Thank you!): https://hackaday.io/project/159139-tiny-solar-energy-module-tsem :

"Jasper Sikken wrote 4 hours ago

You seem to understand my calculations to estimate the amount of daily harvested energy. The AEM10941 input voltage range is max 5V. You need to make sure that the open circuit voltage does not exceed 5V. That often means you need to select 4V or less NOMINAL voltage. Either you put 1 or more 4V solar panels in parallel or put a few lower voltage cells in series. Note that a partial shade on a series string causes the whole string to malfunction. Also note that AEM10941 efficiency drops with solar panel voltage below 1V. So a tradeoff is to select about 2.0V nominal voltage and if you want more power you add more in parallel"

Additional Powerfilm Dev-Kit Review: 

Power an e-ink or reflective display and the Artemis board connected to the Artemis board's SPI pins using 4-6 panels.