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Add a USB-C pinout image

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Emil Miler 2025-01-09 10:44:38 +01:00
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content/posts/enabling-usb-c-chargers-on-miniware-mdp-m905/index.md
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@ -9,11 +9,15 @@ categories = ["Hardware"]
author = "Emil Miler" author = "Emil Miler"
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The MDP-M905 is a small power supply by Miniware, known for their TS100 and TS80 series of smart soldering irons. The issue with the MDP-M905 is that it doesn't work with USB-C chargers, only USB-A. This article describes a way to enable this missing functionality through good old-fashioned hardware hacking. The [MDP-M905](https://www.morningtools.com/article/116/533.html) is a small power supply by Miniware, known for their TS100 and TS80 series of smart soldering irons. The issue with the MDP-M905 is that it doesn't work with USB-C chargers, only USB-A. This article describes a way to enable this missing functionality through good old-fashioned hardware hacking.
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The MDP-M905 has a USB-C connection for power, alongside a classic barrel jack. However, the USB-C port is not wired properly according to the USB-C specification. USB-C is more complex than older connectors; it requires an exchange of information between the connected devices before providing power. The issue lies in the absence of a crucial component: two resistors on pins A5 and B5, which need to be pulled to ground through 5.1kΩ resistors. These pins, known as the "CC lines," are responsible for enabling USB-C to USB-C charging. The MDP-M905 has a USB-C connection for power, alongside a classic barrel jack. However, the USB-C port is not wired properly according to the USB-C specification. USB-C is more complex than older connectors; it requires an exchange of information between the connected devices before providing power.
![USB-C Pinout](usb-c-pinout.png)
The issue lies in the absence of a crucial component: two resistors on pins A5 and B5, which need to be pulled to ground through 5.1kΩ resistors. These pins, known as the "CC lines," are responsible for enabling USB-C to USB-C charging. Notice the two resistors R5 and R6 in the example above.
Fortunately, the fix is simple: attack the board with a soldering iron and a steady hand to add the missing resistors. Fortunately, the fix is simple: attack the board with a soldering iron and a steady hand to add the missing resistors.

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