Puchi-C - Pro Micro replacement with USB-C and ATmega32U4
Description
The Puchi-C is discontinued, due to it's old chip (Atmega32U) and better alternatives.
I recommend the Helios. It's a 1:1 replacement for Pro-Micro, or Puchi-C, with more memory and ESD protection.
The new Puchi-C Rev2 has castellated holes and is even lower (3.3mm). To make the Puchi-C low as possible, the reset button has been removed.
Incorrect silkscreen labeling with this batch: Short edge connector D7 is B7
Due to the chip shortage, the price for the Atmega32u4 chip has tripled. That is why I had to raise the price.
- Compatible with all Pro Micro based PCB's
- Works with USB-A to USB-C and USB-C to USB-C cable
- ATmega32u4 controller
- Running at 16MHz and 5V
- USB-C connector (mid-mounted)
- DFU bootloader
- 5 additional ATmega32u4 pins and USB pins broken out
- Blue power led
- 24 IO pins, +5 pins (see pinout diagram for front and back view)
The Puchi-C comes without header pins, to keep the price low as possible.
I highly reccommend to use the "Single Row Sockets" from Mill-Max, the cheaper alternative, or the "Spring-loaded pin headers".
You can find the standard pin header here.
Reviews 1
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1 review
4 May 2021 11:27
Stylish Elite-C alternative
I'm not too versed with MCUs, but this one has it all. Great design, mid-mounted USB-C port for low profile and you can use it anywhere you could have used Pro Micro or Elite-C, at a very competitive price.
Also works in conjunction with Pro Micros (on split keyboards) effortlessly, as expected.
Safety information
Manufacturer: Keycapsss | Benjamin Rösner, Löhrstr. 11, 04105 Leipzig, Germany
Contact: Keycapsss.com
Accessory Items
12 pin per header H: 2.5mm (The dimension H is the distance between the PC boards) Rated current: 1A Rated voltage: 125V AC, DC Pitch: 2.54 mm includes 2x 12 pin header Insertion / removal forces (per pin): Through holeInsertion forcesRemoval forces 0.8 200g or less 50g or ove 0.85 150g or less 30g or ove 0.9 100g or less 20g or ove
This header pins can be soldered direct on the PCB, or you can use the "Single Row Socket Headers 2.54 Pitch (7mm)" to make it hotswap able.
24 Pin contact USB4.0 (Backward compatible with Thunderbolt 3, USB3.2, 3.1, 3.0, 2.0...) 40Gbps data sync (2500MB/S Max.), with USB2.0 data cable 480Mbps 8K@60Hz ultra HD video output (need a USB cable with support for 8K@60Hz) PD (Power Delivery) up to 5A 100W Strong magnet Material: PVC, Aluminum Alloy
Currently not available
Sockets does not include the Pins. These can be ordered separately from the Drop-Down Menu. Sockets 1x QTY includes 2pcs socket headers (for a Split-Keyboard you need 2x QTY (4pcs socket headers)) Pitch: 0.100" (2.54mm) Contact Finish: Gold Instead of the pins, you can use legs from diodes/resistors, or these needle pins. Pins Length: 0.250" (6.35mm) Diameter: 0.020" (0.51mm) Example how to use the sockets.
Cheaper alternative to the Mill-Max Series 315 sockets 1 Qty = 1 socket row with 40x pin holes Easy split to needed length with a flush cutter Pitch: 0.100" (2.54mm) Both variants work with the Mill-Max 315 pins, but looser than with the Mill-Max sockets (with 7mm even more loose) Variants: Height 3mm Accepted diameter for pins: Variant 0.4mm < 0.7mm Not compatible with standard squared pins Compatible with this needle pins Height 7mm Accepted diameter for pins: Variant 0.6mm < 1.0mm Compatible with standard squared pins Compatible with this needle pins
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