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CC-BY 3.0

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ATMEGA_CALCULATOR

11 months ago 251
  • Description
  • Documents
  • BOM
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Description

This is an attempt to create your own version of the calculator on the ATMEGA8 chip.

The purpose of the conclusions of the microcontroller is seen in the circuit.

The handling of 20 keys is described on my blog - http://un7fgo.gengen.ru/?p=2127 (I apologize, only in Russian).

Documents

Sheet_1

ATMEGA_CALCULATOR_PCB

BOM

ID Designator Footprint Quantity
1 U2,U3 7_SEGMENT_DISPLAY_028_3_DIGITS 2
2 R2,R3,R4,R5 RES-TH_BD1.9-L3.3-P7.30-D0.5 4
3 R6,R7,R8,R9 RES-TH_BD1.9-L3.3-P7.30-D0.5 4
4 U1 DIP28 1
5 KEY1 KEY-TH_4P-L6.0-W6.0-P4.50 1
6 KEY2 KEY-TH_4P-L6.0-W6.0-P4.50 1
7 KEY3 KEY-TH_4P-L6.0-W6.0-P4.50 1
8 KEY4 KEY-TH_4P-L6.0-W6.0-P4.50 1
9 KEY5 KEY-TH_4P-L6.0-W6.0-P4.50 1
10 KEY10 KEY-TH_4P-L6.0-W6.0-P4.50 1
11 KEY9 KEY-TH_4P-L6.0-W6.0-P4.50 1
12 KEY8 KEY-TH_4P-L6.0-W6.0-P4.50 1
13 KEY7 KEY-TH_4P-L6.0-W6.0-P4.50 1
14 KEY6 KEY-TH_4P-L6.0-W6.0-P4.50 1
15 KEY15 KEY-TH_4P-L6.0-W6.0-P4.50 1
16 KEY14 KEY-TH_4P-L6.0-W6.0-P4.50 1
17 KEY13 KEY-TH_4P-L6.0-W6.0-P4.50 1
18 KEY12 KEY-TH_4P-L6.0-W6.0-P4.50 1
19 KEY11 KEY-TH_4P-L6.0-W6.0-P4.50 1
20 KEY20 KEY-TH_4P-L6.0-W6.0-P4.50 1
21 KEY19 KEY-TH_4P-L6.0-W6.0-P4.50 1
22 KEY18 KEY-TH_4P-L6.0-W6.0-P4.50 1
23 KEY17 KEY-TH_4P-L6.0-W6.0-P4.50 1
24 KEY16 KEY-TH_4P-L6.0-W6.0-P4.50 1
25 J1 HDR-M-2.54_1X4 1
26 B1 BAT-TH_BS-2-1 1
27 SW1 SS12D00G4 1

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