PiPicoMite01 Rev1 Assembly Sheet

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PiPicoMite01 P18182 720px.jpg

PicoMite01 Rev1 CAD.PNG

Parts List

Find Qty Ref Des Part Number Find Qty Ref Des Part Number
1 1 U3 TXS0104EDR or TXS0104ED 15 1 J1 Header, Vert, 1x2
2 6 R1, R2, R10, R11, R13, R14 2.2K (1/8W) 16 1 J4 Header, Vert, 2x3
3 2 R3, R4 270 (1/8W) 17 1 J6 Header, Vert, 2x8
4 1 R5 390 (1/8W) 18 1 J9 Header, Vert, 2x10
5 2 R6, R8 47 (1/8W) 19 1 J11 Header, Rt Angle, 1x4
6 1 R7 820 (1/8W) 20 1 H1 Header, Vert, 2x2
7 2 R9, R12 1K (1/8W) 21 2 J3, J5 Header, Female. 1x20
8 2 R15, R16 10K (1/8W) 22 1 J7 AudioJack3, SJ1-3523N Mouser
9 4 C1-C4 0.1uF 23 1 J8 PS2_DIN6 ebay
10 2 C5, C6 47nF 24 1 J10 CONN, DB15HD, BLUE (VGA) Mouser
11 2 C7, C8 47uF 25 1 J2 USB-B Mouser
12 1 D1 1N5819 Mouser 26 1 U1 Raspberry Pi Pico Digikey Adafruit
13 1 D2 (alt for D1) MBR0520T1H 27 1 U2 MCP23017_SP Adafruit
14 1 SD1 Conn, SD Card Mouser

Notes

  1. Install either D1 or D2
  2. Can use 1N400x in place of Schottky diode at D1/D2 location
  3. DC can be provided via header pins on J4 so J2 (USB B power connector) can be omitted
  4. U2 socket is optional
  5. Install shunts at H1, J2 as required per wiki page
  6. Resistor pads fit either 1/8W or 1/4W parts (1/4W shown here)

Res 8th Qrtr W P18205.JPG

I2C connections to MCP23017 - Rework

  • SDA, SCL swapped to MCP23017
  • Cut etch solder side Pico pin 19 (to U2-12)
  • Cut etch solder side Pico pin 20 (to U2-13)
  • Cuts are done on rear side (CAD)
  • Verify cuts with ohmmeter

PicoMite01 X1 Rework I2C2.PNG

PiMicoMite01 P18202 Cuts Jumpers.jpg

  • Jumpers
  • Add wire Pico pin 19 to U2-13 (GP14)
  • Add wire Pico pin 20 to U2-12 (GP15)
  • Glue down wires with small dots of Superglue

PiMicoMite01 P18202 720px Jumpers.jpg