diff --git a/README.md b/README.md
index 4527190..68ca842 100644
--- a/README.md
+++ b/README.md
@@ -6,6 +6,8 @@ necessary build files to build a custom application which turns pico into
 precise PLL digital frequency oscillator of the portion of HF radio spectrum
 1.1 to 9.4MHz with high resolution.
 
+https://github.com/RPiks/pico-DCO/blob/c20d827853a9676a394ead8885afb1cc93c79b2b/DSC_0269.JPG
+
 # Precise frequency resolution
 The library provides 1 Hz frequency resolution in initialize function. This
 resolution can be easily increased to 23 millihertz, which is limited by