Single IC budget 17/20 keys mechanical macro numpad based on CH552G, with open source Arduino firmware and ready-to-use templates
Designed by imuslab in Hong KongThis product is no longer available for sale.
The seller may be offering an improved version or it may be hanging out on the beach, enjoying the retired life.
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What is it? This is a budget 17 / 20 keys macro numpad that is powered by the CH552G MCU. This can be programmed using Arduino IDE with CH55x Arduino library. I have drafted a few ready-to-use templa…
Read More…This is a budget 17 / 20 keys macro numpad that is powered by the CH552G MCU. This can be programmed using Arduino IDE with CH55x Arduino library. I have drafted a few ready-to-use templates that allow the 17 keys layout to act as a standard numpad and the 20 keys layout as numpad + media controller. You can also modify the templates to fit your needs or integrate it with Auto-hotkey for more advance use cases. See more on the open source Github page https://github.com/tobychui/4xMacropad
Properties | Value |
---|---|
Controller | CH552G |
No. of Keys | 17 / 20 (same PCB) |
Dimensions (W x L x H WITH base) | 82mm x 100mm x 65mm |
Dimensions (W x L x H WITHOUT base) | 80mm x 100mm x 20mm |
Programmable LED | x1 (White) |
Programming | Arduino IDE |
Have RGB? | No |
USB Connector | Micro-USB |
This PCB is designed to work with 17 keys standard numpad layout or 20 keys macropad layouts. There are two different firmware for each of the layouts on my Github repo. By default, I will flash the firmware for you according to the layout your purchased. However, if you want to change anything, you can also modify the open source template on my Github repo and flash it into the macropad yourself.
When you are programming this macropad with Arduino IDE, make sure to press and hold the PROG button on the PCB while plugging your macropad into your PC. This will prevent the IC from entering USB HID mode when it is powered on and allow Arduino to program it via UART.
I notice there are a lot of mechanical numpad out there that cost around 40 - 60 USD for DIY kits and 80 - 90 USD for preassembled version. With prior experience in using the CH552G to made my own 4 keys macropad, I am trying to make another one that is cheap to manufacture and easy to program with Arduino IDE. It also help with my broadcast and video editing routine.
This should be one of the most budget, programmable mechanical numpad options on the market. The whole project features a 3d print-able base, sample Arduino codes and everything is open source. Suitable for prosumers with some Arduino programming experience and want an extra macropad lying around to help automate stuffs.
All sale profits from this product will contribute to my next open source keyboard design in which I will also open source on Github. If you want to support my open source budget macropad / numpad project, you can purchase them here. If you have an even tighter budget, I strongly recommend you to build your own one as well! PCB Gerber files and required firmware source code are available on Github open source.
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