Simple Design of Theremin as Musical Instrument Non-Contact Based Light Dependent Resistor (LDR)
Baiq Ida Arianti1, Cecep Rahmat1, Inayati Juwita Sari1, Siti Wulandari1, Lisa Ratna Sary1, Maria Januaria Shepa1, Desyani Ambarwati1, I Made Astra1, Achmad Ainul Yaqin2, Iwan Sugihartono3*

1Program Magister Pendidikan Fisika, FMIPA, Universitas Negeri Jakarta, Jl. Rawamangun muka no. 01, Rawamangun, Jakarta Timur 13220, Indonesia
2Laboratorium kontrol, FMIPA, Universitas Negeri Jakarta, Jl. Rawamangun muka no. 01, Rawamangun, Jakarta Timur 13220, Indonesia
3Program Studi Fisika, FMIPA, Universitas Negeri Jakarta, Jl. Rawamangun muka no. 01, Rawamangun, Jakarta Timur 13220, Indonesia

Abstract

We have developed a theremin as musical instrument non-contact based on LDR using arduino uno as primary interface. The musical instrument system consist of one LDR, arduino uno rev3, buzzer, and LCD display. By adjusting the distance, the frequency will change and produce tones. Our demonstration confirmed that do(C6), re (D6), noodles (E6), fa (F6), sole (G6), la (A6), si (B6), do’(C7) have frequencies at 1046 Hz, 1174 Hz, 1318 Hz, 1396 Hz, 1567 Hz, 1760 Hz, 1975 Hz, 2093 Hz, respectively.

Keywords: Theremin, non-contact, LDR, frequency, tones

Topic: Electronics Engineering