diff --git a/README.md b/README.md
index f2d3aee..1727fc4 100644
--- a/README.md
+++ b/README.md
@@ -16,4 +16,3 @@ Img. 2: The top layer view of the Version 1.0 production board (two layer pcb).
Img. 3: Version 1.0 schematics ([high resolution image](https://github.com/c3d2/pentabug/raw/master/img/schematics_v1_0.png "high resolution image of schematics")).
[Bill of Materials for Version 1.0](https://github.com/c3d2/pentabug/blob/master/bom.md "bill of materials")
-
diff --git a/bom.md b/bom.md
index b0a9101..90f017e 100644
--- a/bom.md
+++ b/bom.md
@@ -1,31 +1,57 @@
-# kostenkalkulation für 100 bausätze:
+# Parts List
+
+
+| Bezeichnung | Bauteil | Hinweis |
|---|
+| n/a | Leiterplatte V1.0 | |
+
| IC1 | Mikrocontroller ATMEGA88PA | Einbaulage beachten |
+
| R1 | Widerstand 100K | braun-schwarz-schwarz-gelb-braun |
+
| R2 | Widerstand 22K | rot-rot-scharz-rot-braun |
+
| R3 | Widerstand 10K | braun-schwarz-schwarz-rot-braun |
+
| Q1 | Transistor 2N7000 | Einbaulage beachten |
+
| C1, C2, C3 | Keramikkondensator 100nF | |
+
| LED1, LED2 | LED rot | Polarität beachten |
+
| SG1 | Piezo Buzzer | |
+
| JP1 | Stiftleiste 1x3 | |
+
| JP2 | Stiftleiste 2x3 | |
+
| S1, S2 | Taster | |
+
| M1 | Motor | |
+
| BAT1 | Batteriefach | erst nach Test auf Platinenunterseite montieren |
+
+
+
+# cost calculation for 100 kits:
+
+
+name description ben.Anzahl quelle/bestnr. einzelpreis(cent) summe(Euro)
+--------- --------- ----------- -------------- ----------------- --------------
+IC1 ATMEGA88PA 100 mouser 144 144
+BAT1 Batteriefach 50 hbc 74 ~40
+M1 motor(schwarz) 100 pollin 125 125
+SG1 piezo buzzer 100 mouser 49 49
+R1, R2, R3 widerst. 300 reichelt 2.5 7.50
+Q1 2n7000 100 reichelt 5 5
+C1, C2, C3 100nF 300 reichelt 7 21
+JP1 head1x3 100 reichelt? 7 7
+JP2 head2x3 100 reichelt? 15 15
+LED1, LED2 ledSLH 56 200 reichelt 7 14
+S1, S2 tacswitch 200 ??? ??? ???
+n/a platine 100 mkpcb? 150? ~150
+n/a stahl.8mm 25 conrad 50 12.5
+n/a lötzinn 1 pollin 795 8
+n/a flyerA5 100 diekopie? 3 3
+n/a tüte 100 todo 5 5
+n/a glitzer 100 todo 20 20
+n/a glitter 100 todo 20 20
+n/a verbrauchsm 4 dealer 250 10
+n/a aterial 4 dealer2 250 10
+n/a buzz variante 100 reichelt 10 10
+n/a schmelzkleber 1 ? 1000 10
+n/a sonstiges 1 dealer3 115 11.5
+ summe:
+ ------------------------
-name ben.Anzahl quelle/bestnr. einzelpreis(cent) summe(Euro)
---------- ----------- -------------- ----------------- --------------
-ATMEGA88PA 100 mouser 144 144
-Batteriefach 50 hbc 74 ~40
-motor(schwarz) 100 pollin 125 125
-buzzr 100 mouser 49 49
-widerst. 400 reichelt 2.5 10
-2n7000 100 reichelt 5 5
-C 100nF 300 reichelt 7 21
-head1x3 100 reichelt? 7 7
-head2x3 100 reichelt? 15 15
-ledSLH 56 200 reichelt 7 14
-platine 100 mkpcb? 150? ~150
-stahl.8mm 25 conrad 50 12.5
-lötzinn 1 pollin 795 8
-flyerA5 100 diekopie? 3 3
-tüte 100 todo 5 5
-glitzer 100 todo 20 20
-glitter 100 todo 20 20
-verbrauchsm 4 dealer 250 10
-aterial 4 dealer2 250 10
-buzz variante 100 reichelt 10 10
- summe:
- ------------------------
- 678.5
------------------------------------------------------------------------------------------------
-
+ 700
+
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