G.4 Feedback from the Field

Several prototypes of the Moonlight were made at the local Kamworks workshop and tested with families in rural Cambodia at nighttime and daytime. The final user tests pointed out that the product is indeed an appropriate solution for the local context. The product was appealing to them, and the usage intuitive: People could easily understand and use the product, hanging it around their neck or placing it at the walls or ceiling of their houses (see Figure G.4.1). Most of the families of the final user test were enthusiastic and even willing to buy the prototypes on the spot.

Figure G.4.1 Field tests in rural Cambodia with working prototypes

Based upon the positive feedback from potential end users, it was decided to do a more extensive pre-production test. Ten “Moonlights” were produced that included a “data logger” to record the charging as well as using behavior. These Moonlights were used and observed during one month in 10 rural households at two different locations. In addition, tests were done with the batteries, PV panels, LEDs, and printing circuit boards in the local context to test their efficiency and duration. The outcomes of these field tests led to several inputs for improvement of the Moonlight. Based upon the positive consumer and technical feedback from the field, it was decided to proceed with production (see Figure G.4.2).

Figure G.4.2 Moonlight production at Kamworks, Cambodia