mutantC_V4 is successor of mutantC_V3 with more features.
Take a look at this in 3D using AutoDesk Fusion 360 Online.
A Raspberry-pi handheld platform with a physical keyboard, Display and Expansion header for add-on boards (Like Arduino Shield).
Here we will dicusses what you need to build one. This device is very easy to make, you don't need lots of tools and parts.
No codding skill is needed. just basic stuff like upload a code to Arduino, little skill in Linux CMD line to install the driver. Little soldering skill that's all.
You can see there is a list in the PCB, that points to some blocks. Each blocks give you one/ multipal features. So if you want a feature that you want, just solder all the parts in that block. Here is the list of the blocks.
|S-1||Main Power Switch||Ability to turn on/ off the device||Must|
|S-2||Continuous Charging||It prevents device the reboot when you disconnect the charger||Optional|
|S-3||Boost & Charge||It boost the battery voltage to 5v||Must|
|S-4||Esp32-s2 + Reset||Controls everything in the device||Must|
|S-5||Vibration||Give vibration feedback||Optional|
|S-6||Real Time Clock||Keeps the time when device is powered off||Optional|
|S-7||MP6050/BME280||Can use Gyro or see Pressure, Temp and Humidity||Optional|
|S-8||Expansion Power Switch||Can turn off display, expansion and the modules in S-7 block||Optional|
|S-9||IR Transmitter||Using IR mutantC can act as a TV, AC remote||Optional|
Here i Made 2 version that I think fits either of you if you are a Pro or a Newbie. See this comparison table to select which one you want to build. I will highly recommend building the Lite one as it requires less parts and time to build and you will miss a little of the features. And later on you can add you can also do your own custom build by selecting the features you want on top the Lite version.
There are total 5 piece of 3D printed parts, here is the link of the STL files that you need to print those parts :
Total 3 PCBs, go to each folder and use the file named Gerber to order the PCB.
All the 3D parts, PCB and Graber files, Device Firmware are in Gitlab and free to donload and use:
I added the build guide in Instructables as it is perfect palce for it: