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STEP_EXECUTOR_Schematic_V2

9 months ago 232
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  • Documents
  • BOM
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Description

Please refer to Dr. Scott M. Baker's blog below. Home ∕ Electronics Projects ∕ Z80 Retrocomputing 5 – Single Stepper for RC2014 I'm very interested with the Dr. Scott's project TIL311 Bus Monitor Board and this Step Executor Board.

This time I'd like to make this board with my favorite parts like pod with tab control, alternate Toggle switch for single stepper. Therefore I decided to make my own Step Executor PCB reffering Dr.Scott' Single Stepper PCB thru EasyEDA and JLCPCBs this time also.

I made some mistake with Ver.1.0 PCB, so I revised circuit and PCB design to Ver.2.2. (I don't make PCBs with this new Version. But I guess It would work correctly because I reflected every amendment with Ver1.0. (Sample pictuire is Ver1.0 w/amendment ) https://www.youtube.com/watch?v=j-svLecRzLU

Special Parts 500KΩ(not 50k) POD:Linkman RD925G-QA1-B504 marutsu parts(Japan) https://www.marutsu.co.jp/pc/i/62776/ TOGGLE SW:Copal ATE1F-5M3-10-Z (digi-key:563-1767-ND) SWITCH SLIDE SP3T:EG1313 (digi-key:EG2485-ND )

It works pretty fine now. It is fun to change execution speed with the Pot tab. But I didn't get license permission to share from Dr.Scott M Bayer.

Therefore, I would probably be eaten by grue!

Documents

STEP_EXECUTOR_Schematic_V2

STEP_EXECUTOR_PCB_V2.2

STEP_EXECUTOR_PCB_V2.2_2

BOM

ID Name Designator Footprint Quantity
1 7.3728MHz X1 OSC-TH_L10.0-W4.5-P5.00 1
2 50kΩ POD VR1 50KΩ POD 1
3 1K R6,R11 AXIAL-0.3 2
4 Header-Female-2.54_2x6 P3 HDR-TH_12P-P2.54-V-R2-C6-S2.54 1
5 SWITCH-SLIDE-SP3T S1 SWITCH-SLIDE-SP3T 1
6 22pF C3,C4 RAD-0.1 2
7 0.01u C6,C7,C9 RAD-0.1 3
8 1u C10 RAD-0.1 1
9 1u C1 RAD-0.1 1
10 0.1u C5,C8,C11 RAD-0.1 3
11 NE555N U2,U3 DIP-8_L9.8-W6.6-P2.54-LS7.6-BL 2
12 100uF C2 CAP-TH_BD6.3-P2.50-D1.0-FD 1
13 SWITCH TOGGLE SPDT U6 SWITCH TOGGLE SPDT 1
14 1M R1 AXIAL-0.3 1
15 4.7k R2,R3,R7,R8 AXIAL-0.3 4
16 10k R4,R5,R9 AXIAL-0.3 3
17 1k R10 AXIAL-0.3 1
18 1N4148 D3,D2,D1 DO-35_BD2.0-L4.0-P8.00-D0.5-FD 3
19 SN74HCT04N U1 DIP-14_L19.0-W7.0-P2.54-LS7.6-BL 1
20 2P Header P2 HDR-TH_2P-P2.54-V-M 1
21 DIP Green D5 LED2-2.54-D3.0MM 1
22 DIP RED D4 LED2-2.54-D3.0MM 1
23 RC40bus P1 RC40BUS 1
24 SN74HCT00N U5 DIP14 1
25 SN74HC74N U4 DIP-14_LS7.62-L19.69-W6.60-PITCH2.54 1

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