I have these two devices, and I also have the core board A06 R01 CM3 and the CM4 adapter board. I have done detailed evaluations and comparisons. The two mainboards are different, namely V4 and V5.
Their battery modules are exactly the same and can be used interchangeably. Their boards can be used interchangeably. I replaced the v4 motherboard in uconsole and installed a 4g expansion card, and everything is running well.
The main changes can be found in the power supply part. I compared the differences between the motherboards in this video uConsole 使用感受 上网游戏以及配件互换_哔哩哔哩_bilibili
The power problem of devterm has been raised by many people, and the main problems are as follows:
1 After being placed for a period of time, pressing the power button cannot turn on the machine.
After plugging in the USB power supply, it can be turned on normally, but when entering the system, there is enough battery power.
2 In my CM3 devterm, it basically drains the battery after 5 days, which is very unfriendly to batteries without protection. A qualified circuit should not lose power so quickly after turning off the power.
3 The A06 core cannot wake up after sleep, showing that the screen is bright but black, and only a hard shutdown is possible.
4 After my devterm is turned off, USB still has power supply, and the red light of the photoelectric mouse will always be on until the battery is exhausted.
The above problems have been raised in the community, and some have been resolved, but there is no official explanation of the reasons and correction plans.
In order to prove my point of view, I tested them by exchanging them. I plugged in a mouse and checked the power supply status of the USB through the red light.
Test without inserting a system TF card, So it has nothing to do with your system image. Press the power button to turn on, long press until the power light goes out to indicate shutdown.
The v4 motherboard configured by devterm, installing the CM3 core, turn on the power, USB red light is on, long press to turn off the power, red light still does not go out. This means that devices including USB and keyboard are always working. The only way is to remove the battery.
V4 motherboard, equipped with A06 R01 CM4 cores such as these cores, turn on the power, USB red light is on, long press to turn off the power, red light goes out. It means that hardware shutdown can control cutting off USB power supply.
And uconsole’s V5 motherboard, after installing CM3 core, turn on the power supply, USB red light does not light up, indicating that it does not wake up USB power supply before entering the system.
In summary: The v5 motherboard has corrected the wake-up and disconnection of power. While at least when paired with CM3 on v4 motherboard, there are serious problems. Neither soft nor hard shutdown will cut off your USB power supply until your battery runs out. CM3 should be the most suitable standard for official motherboards. It is a pity that there are such problems when paired with v4. If anyone knows how to modify it, please tell me that I am looking forward to using CM3 on devterm.