Awhile back I bought a TK 6.1s from Toucan's Amazon store. I know they are no longer being made, but last night they were still being listed as available for purchase so I attempted to buy another. About an hour later I received an email from Toucan through Amazon:
"尊敬的 Kenneth:
感谢您的惠顾。
在完成您的订单时,
亚马逊卖家toucanhobby遇到意外问题。
来自卖家 toucanhobby 的消息:
Hello, Kenneth We are very sorry, you bought a TK6.1S Main Board from our store is out of stock, but we have a mainboard with the same function as the Henglong mainboard, which is also applicable to the Henglong tank. As shown in the figure, its price is $50, we can send this mainboard to you to replace the TK6.1S Main Board. We will refund you the difference between the two. Is it OK? Looking forward to your reply. Sincerely, Orange"

Has anyone seen this board before? Does anyone own this? Use it? I see no model # nor manufacture markings to identify. I would like to hunt down the pinout and investigate further.
EDIT: I found this:
"尊敬的 Kenneth:
感谢您的惠顾。
在完成您的订单时,
亚马逊卖家toucanhobby遇到意外问题。
来自卖家 toucanhobby 的消息:
Hello, Kenneth We are very sorry, you bought a TK6.1S Main Board from our store is out of stock, but we have a mainboard with the same function as the Henglong mainboard, which is also applicable to the Henglong tank. As shown in the figure, its price is $50, we can send this mainboard to you to replace the TK6.1S Main Board. We will refund you the difference between the two. Is it OK? Looking forward to your reply. Sincerely, Orange"
Has anyone seen this board before? Does anyone own this? Use it? I see no model # nor manufacture markings to identify. I would like to hunt down the pinout and investigate further.
EDIT: I found this:









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