Raspberry Pi Pico MM BASIC Build

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Revision as of 16:16, 24 May 2022 by Blwikiadmin (talk | contribs) (Created page with "== Prototype Build == Raspberry Pi Pico MM BASIC Build file:PicoMite_Proto_P18159_720px.jpg * Runs PicoMite (MaxiMite) BASIC (VGA, PS/2) * Uses Land Boards cards **...")
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Prototype Build

Raspberry Pi Pico MM BASIC Build

PicoMite Proto P18159 720px.jpg

OPTION (Configuration)

  • List options
OPTION LIST
  • Setup options
OPTION KEYBOARD US
OPTION SDCARD GP13, GP10, GP11, GP12
OPTION AUDIO GP6, GP7
OPTION COLOURCODE ON
  • Clear OPTIONS with
OPTION RESET

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 - Audio Filter

PiceMite VGA Audio.PNG

GRID49 AUDIO.png

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

AUDIO SIM.PNG

Cabling

FUNCTION GP PICO PIN CARD SIG PIN COLOUR
I2C1GND GND 3 MCP23017
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
I2C1_SDA GP14 19 MCP23017 SDA YEL
I2C1_SCL GP15 20 MCP23017 SCL WHT
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
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