Single IC budget 4-key mechanical macro keypad based on CH552G, with easy to use open source web programming interface and Arduino CodeDesigned by imuslab in Hong Kong
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What is it? This is a 4 key mechanical macropad (macro keypad) based on a really low cost IC - CH552G. This can be programmed using Arduino IDE with CH55x Arduino library and my web programming inter…Read More…
This is a 4 key mechanical macropad (macro keypad) based on a really low cost IC - CH552G. This can be programmed using Arduino IDE with CH55x Arduino library and my web programming interface. See more on the open source Github page https://github.com/tobychui/4xMacropad
|No. of Keys||4|
|Dimensions (W x L x H WITH base)||53mm x 90mm x 28mm|
|Dimensions (W x L x H WITHOUT base)||53mm x 90mm x 22mm|
|Modes / Key Multiplexer||A (Blue LED) / B (Red LED)|
There are 2 modes that can be switched on the macropad. So you can switch between mode A and B base on your usage. In total there are 8 programmable functions keys on this macropad. By defalt, Blue light means you are currently on mode A and Red lights means you are currently on mode B. This can also be changed in the firmware using Arduino IDE and it is open source on Github.
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. If you have difficulties finding the PROG button or the code generation & upload process, please watch the video attached with this product page.
This macropad cost around $3USD each (shipping and assembly cost not included). I design this as a greeting gift in up-coming Maker events so I can exchange gifts from my favorite makers all around Asia.
Note that although the manufacturing price is $3, the international shipping cost for physical objects are quite expensive, the fee mentioned above included the basic shipping of the whole completed keyboard.
This should be the cheapest mechanical keypad options on the market. The whole project features a 3d print-able base, sample Arduino codes and a web programming interface. Suitable for prosumers with some Arduino programming experience and want an extra macropad lying around to help automate stuffs.
BATCH 3 18-9-2023 The batch 4 are made with matte black PCB and micro USB port.
BATCH 3 1-9-2023 The batch 3 of 4xmacropad is a special limited production run with white PCB, micro USB port and Outemu Brown Switches.
BATCH 2 since 19-6-2023 The batch 2 of the macropad PCB uses matte black PCB with 3D printed base. Color of the 3D printed base is ship out randomly.
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