Update docs/development/04-tutorials.md

docs/development/04-tutorials.md

@@ -30,7 +30,7 @@
 
 1. This electrical circuit vector file[^2] allows to use sublimation print technique on fabric. Open the file in Inkscape and you will see the layers named: snaps - marking for the frame snap-fasteners , frame - to cut the frame from 3 mm felt, circuit - for what can be printed and as guide for the circuit embroidering.
 
-2. ATtiny PCB tutorial and fabrication file[^5] at the bottom of the page.
+2. ATtiny PCB tutorial and fabrication files[^5][^6] at the bottom of the page.
 
 ![](../images/tutorials/sf03c.jpg){ width=400 align=center}
 
@@ -42,7 +42,7 @@ For the code[^4] [Charlieplexing](https://en.wikipedia.org/wiki/Charlieplexing)
 
 **STEP 4:** Power
 
-For this swatch 9V battery were used. Snap-fasteners connections with battery materials list bellow: 
+For this swatch 9V battery were used. Snap-fasteners connections[7] with battery materials list bellow: 
 
 ??? "materials"
  
@@ -93,7 +93,7 @@ PCBs consist of three layers: bottom - fiberglass fabric, middle - copper tape a
 
 **STEP 1:** 
 
-1. cut the layers using the materials as shown in the picture bellow. The same drawings are in fabrication file[^5].
+1. cut the layers using the materials as shown in the picture bellow. The same drawings are in fabrication file[^5][^6].
 
 ![](../images/tutorials/attinypcb03.jpg){ width=896 }
 
@@ -138,5 +138,6 @@ Charlieplexing >> http://en.wikipedia.org/wiki/Charlieplexing
 [^2]: [strawberry field circuit SVG](../files/tutorials/strawberry_field_circuit.svg) 
 [^3]: [pompom holder STL](../files/tutorials/pompom_holder.stl) 
 [^4]: [strawberry field code TXT](../files/tutorials/strawberry_field_code.txt) 
-[^5]: [ATtiny PCB SVG](../files/tutorials/attiny_pcb.svg) 
-[^6]: [Connections files for laser cutting](../files/tutorials/connections.svg) 
+[^5]: [ATtiny PCB SVG](../files/tutorials/attiny85pcb.svg)
+[^6]: [ATtiny PCB PDF](../files/tutorials/attiny85pcb.pdf)
+[^7]: [Connections files for laser cutting](../files/tutorials/connections.svg)