PX Reference (v2.4)

By pepaslabs

2 layer board of 1.93 x 1.83 inches (49.0 x 46.5 mm).
Shared on February 16th, 2018 00:18

An LTZ1000-based 7V reference, based on the circuits of Andreas of the EEVBlog forum.

See http://www.eevblog.com/forum/metrology/px-reference/ and https://github.com/pepaslabs/px-ref/tree/master/kicad/releases/v2.4


PX Reference (v2.4)

By pepaslabs

2 layer board of 1.93 x 1.83 inches (49.0 x 46.5 mm).
Shared on February 16th, 2018 00:18

An LTZ1000-based 7V reference, based on the circuits of Andreas of the EEVBlog forum.

See http://www.eevblog.com/forum/metrology/px-reference/ and https://github.com/pepaslabs/px-ref/tree/master/kicad/releases/v2.4



baconbits-rev1-panel

By fustini

2 layer board of 5.05 x 4.96 inches (128.2 x 125.9 mm).
Shared on February 15th, 2018 23:27


baconbits-rev1-panel

By fustini

2 layer board of 5.05 x 4.96 inches (128.2 x 125.9 mm).
Shared on February 15th, 2018 23:27



Knight Rider 2.18.18.2

By Gwatson

2 layer board of 5.31 x 2.63 inches (135.0 x 66.7 mm).
Shared on February 15th, 2018 22:43

Redesigned The Knight Rider Circuit Using the NE555 And 4017 IC This Project was a little challenging Running the traces ,But it turned out beautifully I think . This was a great project and I have a lot of Fun doing it … I will keep My fingers crossed that it works correctly ….


Knight Rider 2.18.18.2

By Gwatson

2 layer board of 5.31 x 2.63 inches (135.0 x 66.7 mm).
Shared on February 15th, 2018 22:43

Redesigned The Knight Rider Circuit Using the NE555 And 4017 IC This Project was a little challenging Running the traces ,But it turned out beautifully I think . This was a great project and I have a lot of Fun doing it … I will keep My fingers crossed that it works correctly ….



PIC16 Splatfest 1.0

By Bjoern

2 layer board of 1.19 x 1.11 inches (30.1 x 28.2 mm).
Shared on February 15th, 2018 20:49

I totaly didn’t give up using a PIC16 with USB directly… PIC16 Board with FTDI Chip for USB…

Original Image: https://balitix.deviantart.com/art/Callie-Splatoon-Sketch-610380999


PIC16 Splatfest 1.0

By Bjoern

2 layer board of 1.19 x 1.11 inches (30.1 x 28.2 mm).
Shared on February 15th, 2018 20:49

I totaly didn’t give up using a PIC16 with USB directly… PIC16 Board with FTDI Chip for USB…

Original Image: https://balitix.deviantart.com/art/Callie-Splatoon-Sketch-610380999



BaconBits Rev. 1.1

By mwelling

2 layer board of 2.17 x 1.38 inches (55.2 x 35.1 mm).
Shared on February 15th, 2018 19:56

PocketBeagle Minicape for E-ALE training.

e-ale.org

Not tested! Order at your own risk.


BaconBits Rev. 1.1

By mwelling

2 layer board of 2.17 x 1.38 inches (55.2 x 35.1 mm).
Shared on February 15th, 2018 19:56

PocketBeagle Minicape for E-ALE training.

e-ale.org

Not tested! Order at your own risk.



usb-condom

By JChristensen

2 layer board of 0.70 x 1.10 inches (17.8 x 27.9 mm).
Shared on February 15th, 2018 17:18

USB Condom v1.0.
A little something for the tinfoil hat crowd ;-)
Full project details with BOM on GitHub.


usb-condom

By JChristensen

2 layer board of 0.70 x 1.10 inches (17.8 x 27.9 mm).
Shared on February 15th, 2018 17:18

USB Condom v1.0.
A little something for the tinfoil hat crowd ;-)
Full project details with BOM on GitHub.



1000795-R00 Ferrite PCB

By mquimby

2 layer board of 0.64 x 1.56 inches (16.2 x 39.7 mm).
Shared on February 15th, 2018 15:59

Breakout board for 29f0430-2sr-10 Laird ferrite; O1 passes over twice before connecting to O2.


1000795-R00 Ferrite PCB

By mquimby

2 layer board of 0.64 x 1.56 inches (16.2 x 39.7 mm).
Shared on February 15th, 2018 15:59

Breakout board for 29f0430-2sr-10 Laird ferrite; O1 passes over twice before connecting to O2.



ftdi-adapter

By corbin1091

2 layer board of 1.08 x 1.41 inches (27.3 x 35.7 mm).
Shared on February 15th, 2018 15:16

Adapter for FTDI RS-232 cables to bring the pinout down to GND, TXD, & RXD. There are two variants: (A) with TXD in the center; (B) with RXD in the center. Pin 1 is always GND. Bonus Debug header and optional pull-up resistors (0402).

Use male 0.1" headers for the FTDI & DBG connectors, and female 0.1" headers for the A & B connectors.


ftdi-adapter

By corbin1091

2 layer board of 1.08 x 1.41 inches (27.3 x 35.7 mm).
Shared on February 15th, 2018 15:16

Adapter for FTDI RS-232 cables to bring the pinout down to GND, TXD, & RXD. There are two variants: (A) with TXD in the center; (B) with RXD in the center. Pin 1 is always GND. Bonus Debug header and optional pull-up resistors (0402).

Use male 0.1" headers for the FTDI & DBG connectors, and female 0.1" headers for the A & B connectors.



Roborio board

By hpeyerl

2 layer board of 7.25 x 3.78 inches (184.2 x 96.0 mm).
Shared on February 15th, 2018 14:39

4627 Manning Robotics modified version of team 610 Crescent Robotics roborio connector card. Widened with mounting holes moved outward. Not yet tested by 4627.


Roborio board

By hpeyerl

2 layer board of 7.25 x 3.78 inches (184.2 x 96.0 mm).
Shared on February 15th, 2018 14:39

4627 Manning Robotics modified version of team 610 Crescent Robotics roborio connector card. Widened with mounting holes moved outward. Not yet tested by 4627.



Bias-T

By kolaCZek

2 layer board of 0.90 x 0.48 inches (22.9 x 12.1 mm).
Shared on February 15th, 2018 11:10


Bias-T

By kolaCZek

2 layer board of 0.90 x 0.48 inches (22.9 x 12.1 mm).
Shared on February 15th, 2018 11:10



FM Trap v2

By kolaCZek

2 layer board of 1.35 x 0.40 inches (34.3 x 10.2 mm).
Shared on February 15th, 2018 10:51


FM Trap v2

By kolaCZek

2 layer board of 1.35 x 0.40 inches (34.3 x 10.2 mm).
Shared on February 15th, 2018 10:51



2m / 70cm Diplexer v1

By kolaCZek

2 layer board of 1.00 x 0.68 inches (25.4 x 17.1 mm).
Shared on February 15th, 2018 10:41


2m / 70cm Diplexer v1

By kolaCZek

2 layer board of 1.00 x 0.68 inches (25.4 x 17.1 mm).
Shared on February 15th, 2018 10:41



2m Band Pass

By kolaCZek

2 layer board of 1.05 x 0.26 inches (26.6 x 6.7 mm).
Shared on February 15th, 2018 09:21


2m Band Pass

By kolaCZek

2 layer board of 1.05 x 0.26 inches (26.6 x 6.7 mm).
Shared on February 15th, 2018 09:21



74LVC1T45 BOB

By eraticus

2 layer board of 0.61 x 0.51 inches (15.4 x 12.9 mm).
Shared on February 15th, 2018 07:14

BUS TRANSCVR TRI-ST


74LVC1T45 BOB

By eraticus

2 layer board of 0.61 x 0.51 inches (15.4 x 12.9 mm).
Shared on February 15th, 2018 07:14

BUS TRANSCVR TRI-ST



ATARI 2600 SIMPLE MOD BOARD PGR 2018

By PGRREPAIR

2 layer board of 0.93 x 0.65 inches (23.7 x 16.4 mm).
Shared on February 15th, 2018 02:21

SIMPLE MOD BOARD FOR THE ATARI 2600 THAT INSTALLS ON THE REMOVED RF MODULATOR PINS


ATARI 2600 SIMPLE MOD BOARD PGR 2018

By PGRREPAIR

2 layer board of 0.93 x 0.65 inches (23.7 x 16.4 mm).
Shared on February 15th, 2018 02:21

SIMPLE MOD BOARD FOR THE ATARI 2600 THAT INSTALLS ON THE REMOVED RF MODULATOR PINS



RS232-adaptor-000a

By joehammer

2 layer board of 2.71 x 2.16 inches (68.8 x 54.8 mm).
Shared on February 15th, 2018 01:43

RS232 to TTL interface adapter


RS232-adaptor-000a

By joehammer

2 layer board of 2.71 x 2.16 inches (68.8 x 54.8 mm).
Shared on February 15th, 2018 01:43

RS232 to TTL interface adapter



C64 Universal memory replacement

By Hojo_Norem

2 layer board of 0.86 x 2.13 inches (21.7 x 54.0 mm).
Shared on February 14th, 2018 23:35

Replace that old unreliable DRAM with SRAM! Inspired by penfold42 on the Lemon64 forum.

Bonus for shortboard users!

Testing so far has shown that this mod eliminates the VSP bug!

The main goal of this little experiment is to see if the SRAM has any immunity to the VIC-II VSP bug that plagues many shortboard C64s and some longboard C64s.

This board has been designed to fit under the character generator ROM on either the long or short motherboards. It will also work in the KERNAL and BASIC sockets on the long board.

Basic construction

64KB, 128KB and 256KB SRAMs are compatible as long as they conform to the standard pinout. 64KB SRAMS can be harvested (carefully) from SNES Stuntrace FX and DooM carts. 128KB SRAMS are still relatively easy to come by new. Use those, cause destroying working carts for parts is a crime… Okay, it /should/ be.

C1 and C2 are basic power bypass caps. I just used some spare 100nf parts I had lying around.

The small IC just above the caps is a single inverter gate. There are differing part numbers among the various manufactures, but what you are looking for is a inverter in a SOT23-5 package designed for 5V operation. It would probably help to get the TTL compatible version. The part number printed (74HCT1G04) is a guide only.

Header Wiring

Pins 1,3,4 & 5 connect the the motherboard’s DRAM address lines MA4, MA5, MA6 & MA7. For the 4146s used on most longboards, these are pins 9,10,11 & 13. For the 41464 used on the shortboards and later longboards, use pins 7,8,10 & 14. Do not cross check these with the datasheets as Commodore did not. Following the datasheet (for the 41464 at least) will result in screen corruption and a lower bytes free reported on bootup. These can be connected in any order, Commodore didn’t care and so doesn’t the memory!

Pin 2 is connected to the DRAM R/W line, which is pin 3 and 4 for the 4146 and 41464 respectively.

Pin 6 is connected to the DRAM CAS line. Pin 15 for the 4146 and pin 16 for the 41464.

Finally, pin 7 is connected to the DRAM RAS line. Pin 4 for the 4146 and pin 5 for the 41464.


C64 Universal memory replacement

By Hojo_Norem

2 layer board of 0.86 x 2.13 inches (21.7 x 54.0 mm).
Shared on February 14th, 2018 23:35

Replace that old unreliable DRAM with SRAM! Inspired by penfold42 on the Lemon64 forum.

Bonus for shortboard users!

Testing so far has shown that this mod eliminates the VSP bug!

The main goal of this little experiment is to see if the SRAM has any immunity to the VIC-II VSP bug that plagues many shortboard C64s and some longboard C64s.

This board has been designed to fit under the character generator ROM on either the long or short motherboards. It will also work in the KERNAL and BASIC sockets on the long board.

Basic construction

64KB, 128KB and 256KB SRAMs are compatible as long as they conform to the standard pinout. 64KB SRAMS can be harvested (carefully) from SNES Stuntrace FX and DooM carts. 128KB SRAMS are still relatively easy to come by new. Use those, cause destroying working carts for parts is a crime… Okay, it /should/ be.

C1 and C2 are basic power bypass caps. I just used some spare 100nf parts I had lying around.

The small IC just above the caps is a single inverter gate. There are differing part numbers among the various manufactures, but what you are looking for is a inverter in a SOT23-5 package designed for 5V operation. It would probably help to get the TTL compatible version. The part number printed (74HCT1G04) is a guide only.

Header Wiring

Pins 1,3,4 & 5 connect the the motherboard’s DRAM address lines MA4, MA5, MA6 & MA7. For the 4146s used on most longboards, these are pins 9,10,11 & 13. For the 41464 used on the shortboards and later longboards, use pins 7,8,10 & 14. Do not cross check these with the datasheets as Commodore did not. Following the datasheet (for the 41464 at least) will result in screen corruption and a lower bytes free reported on bootup. These can be connected in any order, Commodore didn’t care and so doesn’t the memory!

Pin 2 is connected to the DRAM R/W line, which is pin 3 and 4 for the 4146 and 41464 respectively.

Pin 6 is connected to the DRAM CAS line. Pin 15 for the 4146 and pin 16 for the 41464.

Finally, pin 7 is connected to the DRAM RAS line. Pin 4 for the 4146 and pin 5 for the 41464.



depthSensorBoard.kicad_pcb

By bsongras

2 layer board of 2.63 x 1.76 inches (66.7 x 44.6 mm).
Shared on February 14th, 2018 23:18

depth sensor board


depthSensorBoard.kicad_pcb

By bsongras

2 layer board of 2.63 x 1.76 inches (66.7 x 44.6 mm).
Shared on February 14th, 2018 23:18

depth sensor board



CANBoard

By thadhouse

2 layer board of 0.96 x 1.57 inches (24.4 x 39.8 mm).
Shared on February 14th, 2018 20:50

CAN MCP Board (3.3V compatible)


CANBoard

By thadhouse

2 layer board of 0.96 x 1.57 inches (24.4 x 39.8 mm).
Shared on February 14th, 2018 20:50

CAN MCP Board (3.3V compatible)



uPowerSwitcher.brd

By TerryC

2 layer board of 0.75 x 0.59 inches (19.1 x 14.9 mm).
Shared on February 14th, 2018 19:27

Tiny MOC30xx + Triac AC switching board.

CAUTION: No guarantees are made with regards to the safety of this board or design. Mains voltages will be present in use.


uPowerSwitcher.brd

By TerryC

2 layer board of 0.75 x 0.59 inches (19.1 x 14.9 mm).
Shared on February 14th, 2018 19:27

Tiny MOC30xx + Triac AC switching board.

CAUTION: No guarantees are made with regards to the safety of this board or design. Mains voltages will be present in use.