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UPDI Programming Key - 4 pin Pads

author: gchart
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2 layer board of 0.40 x 0.81 inches (10.2 x 20.6 mm)
Uploaded: July 28, 2022
Shared: July 28, 2022
Total Price: $1.60

Can be used with most USB to Serial TTL adapters. The standard CH340 adapters tend to be a great option (if it has an Rx LED, you may need to physically disable that). This programmer is my favorite as it doesn’t require any modifications. I usually order these as 0.8mm thickness option. I solder straight header pins flat to the board and then cover with clear heat shrink.

  • R470 is a 0805-sized 470 Ohm resistor (or any value in that range)
  • DIODE is a SOD-323 Schottky diode such as BAT54WS, 1N4148WS, or B5819WS
  • Uses 3x P50-B1 pogo pins
  • Heatshrink (optional but highly recommended): clear 7mm (9/32") tubing

Assembled adapter

Can be used with most USB to Serial TTL adapters. The standard CH340 adapters tend to be a great option (if it has an Rx LED, you may need to physically disable that). This programmer is my favorite as it doesn’t require any modifications. I usually order these as 0.8mm thickness option. I solder straight header pins flat to the board and then cover with clear heat shrink.

  • R470 is a 0805-sized 470 Ohm resistor (or any value in that range)
  • DIODE is a SOD-323 Schottky diode such as BAT54WS, 1N4148WS, or B5819WS
  • Uses 3x P50-B1 pogo pins
  • Heatshrink (optional but highly recommended): clear 7mm (9/32") tubing

Assembled adapter

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      Hey there! Before ordering, make sure you have all the info you need to complete and use this design. This usually means a component list, and sometimes additional information such as assembly notes, source code, or usage guides.
      Since this is a project designed by a community member, it may contain design errors that prevent it from working as intended. OSH Park cannot place any guarantees about the functionality or correctness of the design.
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