Difference between revisions of "PiPicoMite01"

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Line 283: Line 283:
  
 
=== Cabling ===
 
=== Cabling ===
−
 
 
{| class="wikitable"
 
{| class="wikitable"
 
! FUNCTION
 
! FUNCTION
Line 292: Line 291:
 
! PIN
 
! PIN
 
! COLOUR
 
! COLOUR
 +
|-
 +
| AUDIO-GND
 +
| GND
 +
| 8
 +
| GRID49
 +
| AUD-GND
 +
| D1
 +
| BLK
 
|-
 
|-
 
| AUDIO-L
 
| AUDIO-L
Line 304: Line 311:
 
| GP7
 
| GP7
 
| 10
 
| 10
−
| GRID49
 
−
| AUD-GND
 
−
| D1
 
−
| BLK
 
−
|-
 
−
| AUDIO-GND
 
−
| GND
 
−
| 8
 
 
| GRID49
 
| GRID49
 
| AUD-R
 
| AUD-R
 
| E1
 
| E1
 
| YEL
 
| YEL
−
|-
 
−
| PS2_3.3V
 
−
| 3.3V
 
−
|
 
−
| PS2X49
 
−
| 3.3V
 
−
| 4
 
−
| RED
 
−
|-
 
−
| PS2_5V
 
−
| VSYS
 
−
| 39
 
−
| PS2X49
 
−
| PWR1
 
−
| 2
 
−
| ORG
 
 
|-
 
|-
 
| PS2_CLK
 
| PS2_CLK
 
| GP8
 
| GP8
 
| 11
 
| 11
−
| PS2X49
+
| PS2X49  
 
| CLK1
 
| CLK1
 
| 6
 
| 6
Line 344: Line 327:
 
| GP9
 
| GP9
 
| 12
 
| 12
−
| PS2X49
+
| PS2X49  
 
| DAT1
 
| DAT1
 
| 8
 
| 8
Line 352: Line 335:
 
| GND
 
| GND
 
| 13
 
| 13
−
| PS2X49
+
| PS2X49  
 
| GND
 
| GND
 
| 10
 
| 10
 
| BLK
 
| BLK
 
|-
 
|-
−
| SD_3.3V
+
| SD_SCK
−
| 3.3V
+
| GP10
−
|  
+
| 14
−
| SD_CARD_X49
+
| SD_CARD_X49  
−
| 3.3V
+
| SCLK
−
| 7
+
| 3
−
| RED
+
| VIO
−
|-
 
−
| SD_MISO
 
−
| GP12
 
−
| 16
 
−
| SD_CARD_X49
 
−
| MISO
 
−
| 2
 
−
| YEL
 
 
|-
 
|-
 
| SD_MOSI
 
| SD_MOSI
 
| GP11
 
| GP11
 
| 15
 
| 15
−
| SD_CARD_X49
+
| SD_CARD_X49  
 
| MOSI
 
| MOSI
 
| 4
 
| 4
 
| BLU
 
| BLU
 
|-
 
|-
−
| SD_SCK
+
| SD_MISO
−
| GP10
+
| GP12
−
| 14
+
| 16
−
| SD_CARD_X49
+
| SD_CARD_X49  
−
| SCLK
+
| MISO
−
| 3
+
| 2
−
| VIO
+
| YEL
 
|-
 
|-
 
| SD_SLVSEL
 
| SD_SLVSEL
 
| GP13
 
| GP13
 
| 17
 
| 17
−
| SD_CARD_X49
+
| SD_CARD_X49  
 
| -SDCS
 
| -SDCS
 
| 5
 
| 5
Line 400: Line 375:
 
| GND
 
| GND
 
| 18
 
| 18
−
| SD_CARD_X49
+
| SD_CARD_X49  
 
| GND
 
| GND
 
| 1
 
| 1
 
| BLK
 
| BLK
 
|-
 
|-
−
| VGA_BLU
+
| VGA_HSYNC
−
| GP18
+
| GP16
−
| 24
+
| 21
−
| VGAX39
+
| VGA
−
| B4 (R12=270)
+
| HS
−
| 12
+
| 17
−
| BLU
+
| GRY
 +
|-
 +
| VGA_VSYNC
 +
| GP17
 +
| 22
 +
| VGA
 +
| VS
 +
| 18
 +
| WHT
 
|-
 
|-
 
| VGA_GND
 
| VGA_GND
 
| GND
 
| GND
 
| 23
 
| 23
−
| VGAX39
+
| VGA
 
| GND
 
| GND
 
| 19
 
| 19
 
| BRN
 
| BRN
 
|-
 
|-
−
| VGA_GRN_HI
+
| VGA_BLU
−
| GP20
+
| GP18
−
| 26
+
| 24
−
| VGAX39
+
| VGA
−
| G5 (R6=390)
+
| B4
−
| 6
+
| 12
−
| GRN
+
| BLU
 
|-
 
|-
 
| VGA_GRN_LO
 
| VGA_GRN_LO
 
| GP19
 
| GP19
 
| 25
 
| 25
−
| VGAX39
+
| VGA
−
| G4 (R7=820)
+
| G4
 
| 7
 
| 7
 
| GRN
 
| GRN
 
|-
 
|-
−
| VGA_HSYNC
+
| VGA_GRN_HI
−
| GP16
+
| GP20
−
| 21
+
| 26
−
| VGAX39
+
| VGA
−
| HS
+
| G5
−
| 17
+
| 6
−
| GRY
+
| GRN
 
|-
 
|-
 
| VGA_RED
 
| VGA_RED
 
| GP21
 
| GP21
 
| 27
 
| 27
−
| VGAX39
+
| VGA
−
| R4 (R1=270)
+
| R4
 
| 1
 
| 1
 
| ORG
 
| ORG
 
|-
 
|-
−
| VGA_VSYNC
+
| PS2_5V
−
| GP17
+
| VSYS
−
| 22
+
| 39
−
| VGAX39
+
| PS2X49
−
| VS
+
| PWR1
−
| 18
+
| 2
−
| WHT
+
| ORG
 +
|-
 +
| PS2_3.3V
 +
| 3.3V
 +
| BUS
 +
| PS2X49
 +
| 3.3V
 +
| 4
 +
| RED
 +
|-
 +
| SD_3.3V
 +
| 3.3V
 +
| BUS
 +
| SD_CARD_X49
 +
| 3.3V
 +
| 7
 +
| RED
 
|-
 
|-
 
|}
 
|}

Revision as of 16:55, 17 May 2022

PiPicoMite01 FRONT 3D.png

Features

  • Raspberry Pi Pico
    • All pins brought to header
    • Pin marking on rear
  • VGA (1:2:1 - R:G:B)
  • PS/2 Keyboard
    • 5V to keyboard with voltage translator
  • SD Card
    • Full size card
    • Up to 32GB
  • Stereo audio
    • 3.5mm jack
  • 16-bit GPIO
    • MCP23017 port expander
    • I2C1
    • 2x20 0.1" pitch header
    • Jumper selectable terminators
  • Power options
    • 5V power input via USB B or 0.1" pitch header
    • 3.3V output header
  • 120mmx70mm outline
  • (4) 6-32 Mounting holes

Pin Marking on Rear

PiPicoMite01 REAR 3D.png

Schematic

Connectors

GP FUNCTION PICO PIN
GP6 AUDIO-L 9
GP7 AUDIO-R 10
GND AUDIO-GND 8
3.3V PS2_3.3V
VSYS PS2_5V 39
GP8 PS2_CLK 11
GP9 PS2_DATA 12
GND PS2_GND 13
3.3V SD_3.3V
GP12 SD_MISO 16
GP11 SD_MOSI 15
GP10 SD_SCK 14
GP13 SD_SLVSEL 17
GND SD_GND 18
GP18 VGA_BLU 24
GND VGA_GND 23
GP20 VGA_GRN_HI 26
GP19 VGA_GRN_LO 25
GP16 VGA_HSYNC 21
GP21 VGA_RED 27
GP17 VGA_VSYNC 22

H1 - 3.3V Power Out

PiPicoMite01 H1 3p3V.PNG

J1 - SD Card

PiPicoMite01 J1 SD Card.PNG

J2 - USB B Power Connectors

  • Full size USB B connector
  • No USB signal connections, just used for power

J3/J5 Pico Connectors

PiPicoMite01 J4-5 PiPico.PNG

J4 - I2C Terminators

  • Install shunts to terminate SDA, SCL signals

J6 - GPIO

File:PiPicoMite01 J6 GPIO.PNG

J7 - Audio

PiPicoMite01 J7 Audio.PNG

J8 - PS/2 Keyboard

PiPicoMite01 J8 Keyboard.PNG

J9 - 5V Distribution

PiPicoMite01 J9 5V.PNG

J10 - I2C INT

  • Install jumper to connect Interrupt from MCP23017 to GP0 pin on Pico
  • No Pull-up

P1 - VGA

PiPicoMite01 P1 VGA.PNG

Prototype Build

Raspberry Pi Pico in a Small Plastic Project Box

Pico Plastic Box P18136 720px.jpg

VGAX49

VGAX49 P901-cropped-720px.jpg

  • VGAX49
  • Resistors Values
    • Selected for 0.7V output on analog RGB pins
    • R12 = 270
    • R6 = 390
    • R7 = 820
    • R1 = 270
R,B G RES G
Rs 75 R1 390 75
Rm 270 R2 820 264.298
Vin 3.3 RM 264.298 3.3
Vout 0.717 0.729
I (mA) 9.57 I (mA) 9.73

PS2X49

PS2X49 P897 cropped 512pxV.jpg

  • PS2X49
  • PWR1 is the power to the PS/2 #1, #2 connectors (5V)
  • +3.3V powers the TXS0104 translator
  • Routing
    • CLK1, DAT1 on J3 go to J1 (Purple)
    • CLK2, DAT2 on J3 go to J2 (Not used)

J3-schem.PNG

SD CARD X49

SDCARDX49 P935 cropped-512px.jpg

  • SD CARD X49
  • Install NO5V jumper
  • Connect 3.3V power
  • No 5V attached
  • No U2 voltage regulator needed

GRID49

GRID49 AUDIO.png

PiceMite VGA Audio.PNG

  • C1 = Audio_In-L
  • D1 - GND
  • E1 - Audio_In-R

Cabling

FUNCTION GP PICO PIN CARD SIG PIN COLOUR
AUDIO-GND GND 8 GRID49 AUD-GND D1 BLK
AUDIO-L GP6 9 GRID49 AUD-L C1 VIO
AUDIO-R GP7 10 GRID49 AUD-R E1 YEL
PS2_CLK GP8 11 PS2X49 CLK1 6 VIO
PS2_DATA GP9 12 PS2X49 DAT1 8 YEL
PS2_GND GND 13 PS2X49 GND 10 BLK
SD_SCK GP10 14 SD_CARD_X49 SCLK 3 VIO
SD_MOSI GP11 15 SD_CARD_X49 MOSI 4 BLU
SD_MISO GP12 16 SD_CARD_X49 MISO 2 YEL
SD_SLVSEL GP13 17 SD_CARD_X49 -SDCS 5 GRY
SD_GND GND 18 SD_CARD_X49 GND 1 BLK
VGA_HSYNC GP16 21 VGA HS 17 GRY
VGA_VSYNC GP17 22 VGA VS 18 WHT
VGA_GND GND 23 VGA GND 19 BRN
VGA_BLU GP18 24 VGA B4 12 BLU
VGA_GRN_LO GP19 25 VGA G4 7 GRN
VGA_GRN_HI GP20 26 VGA G5 6 GRN
VGA_RED GP21 27 VGA R4 1 ORG
PS2_5V VSYS 39 PS2X49 PWR1 2 ORG
PS2_3.3V 3.3V BUS PS2X49 3.3V 4 RED
SD_3.3V 3.3V BUS SD_CARD_X49 3.3V 7 RED

Mechanicals

PicoMite01 Rev1 Mechs.PNG

Assembly Sheet

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