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JJRC H30C with a new RFchip CHOMP ZC2406/ZC2407
21 Feb 2016 11:37 #43404
by SeByDocKy
JJRC H30C with a new RFchip CHOMP ZC2406/ZC2407 was created by SeByDocKy
Just received this new JJRC, one more time they changed the protocol but the more interesting, it's introducing a new RFchip the CHOMP ZC2406 for rge RX and the ZC2407 for the TX
Some infos can be found here: www.chompmcu.com/product-31.html
Some infos can be found here: www.chompmcu.com/product-31.html
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21 Feb 2016 14:36 - 21 Feb 2016 16:29 #43411
by goebish
Replied by goebish on topic JJRC H30C with a new RFchip CHOMP ZC2406/ZC2407
JJRC .... have they ever made 2 machines that are both using the same protocol ? 
Some of the characteristics make me think of the nrf24+/xn297l/bk24xx, pin count (in RX), available bit rates, 126 channels spaced 1MHz ... but we don't even know if it's using GFSK modulation.
Is it the only IC in the transmitter ? I hope not (but looks it's the case because it's directly connected to pots), that would mean the mcu is built in the transceiver and so there's no SPI bus to capture here, we'll have to find other means (capture on the RX, or capture in the air ...).
... but that's interesting, I'm a bit bored of "just" adding protocols, stuffs like that are more challenging
Some of the characteristics make me think of the nrf24+/xn297l/bk24xx, pin count (in RX), available bit rates, 126 channels spaced 1MHz ... but we don't even know if it's using GFSK modulation.
Is it the only IC in the transmitter ? I hope not (but looks it's the case because it's directly connected to pots), that would mean the mcu is built in the transceiver and so there's no SPI bus to capture here, we'll have to find other means (capture on the RX, or capture in the air ...).
... but that's interesting, I'm a bit bored of "just" adding protocols, stuffs like that are more challenging
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21 Feb 2016 14:50 #43413
by SeByDocKy
Yes JJRC changes almost every model their protocols... In practice, they rebrand every toys in the market...
I am afraid it's the only IC
... maybe the classic SPI are still available in some pins ....
Replied by SeByDocKy on topic JJRC H30C with a new RFchip CHOMP ZC2406/ZC2407
goebish wrote: JJRC .... have they ever made 2 machines that are both using the same protocol ?
Some of the characteristics make me think of the nrf24/xn297/bk24xx, pin count (in RX), available bit rates ... but we don't even know if it's using GFSK modulation.
Is it the only IC in the transmitter ? I hope not (but looks it's the case because it's directly connected to pots), that would mean the mcu is built in the transceiver and so there's no SPI bus to capture here, we'll have to find other means (capture on the RX, or capture in the air ...).
... but that's interesting, I'm a bit bored of "just" adding protocols, stuffs like that are more challenging
Yes JJRC changes almost every model their protocols... In practice, they rebrand every toys in the market...
I am afraid it's the only IC
... maybe the classic SPI are still available in some pins .... Please Log in or Create an account to join the conversation.
21 Feb 2016 14:52 - 21 Feb 2016 14:58 #43414
by goebish
Replied by goebish on topic JJRC H30C with a new RFchip CHOMP ZC2406/ZC2407
There's no external SPI talking to the transceiver if it's the only IC, no possibility to dump from the TX by "classic" means
How much is this machine ?
How much is this machine ?
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21 Feb 2016 15:01 - 21 Feb 2016 16:44 #43415
by goebish
Replied by goebish on topic JJRC H30C with a new RFchip CHOMP ZC2406/ZC2407
google translate:
I'll try to find a datasheet.... note that it should be possible to capture as usual but on the RX side, that's not easy to solder probe wires here
ZC2407 is a MCU + 2.4G together sealed in a SSOP24 of IC, 12 IO ports (including port 7 AD), mainly used in the Flight Control 2.4G remote control market.
I'll try to find a datasheet.... note that it should be possible to capture as usual but on the RX side, that's not easy to solder probe wires here
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21 Feb 2016 15:08 #43416
by SeByDocKy
30 USD .... average machine .... 720p with very narrow FOV
Replied by SeByDocKy on topic JJRC H30C with a new RFchip CHOMP ZC2406/ZC2407
goebish wrote: There's no external SPI talking to the transceiver if it's the only IC, no possibility to dump from the TX by "classic" means
How much is this machine ?
30 USD .... average machine .... 720p with very narrow FOV
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21 Feb 2016 15:13 #43417
by goebish
Replied by goebish on topic JJRC H30C with a new RFchip CHOMP ZC2406/ZC2407
Yeah, maybe not worth working on that if that's the only machine that's using this chip
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22 Feb 2016 00:34 - 22 Feb 2016 00:35 #43437
by dc59
I visited their web site , it announced Z2407 chip integrated MCU & 2.4G chip in one chip!
range is 80 meter ; I can't find any datasheet and Z2406 information.
12 IO ports and 7 AD ports.
Replied by dc59 on topic JJRC H30C with a new RFchip CHOMP ZC2406/ZC2407
goebish wrote: There's no external SPI talking to the transceiver if it's the only IC, no possibility to dump from the TX by "classic" means
How much is this machine ?
I visited their web site , it announced Z2407 chip integrated MCU & 2.4G chip in one chip!
range is 80 meter ; I can't find any datasheet and Z2406 information.
12 IO ports and 7 AD ports.
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22 Feb 2016 08:16 #43449
by SeByDocKy
The RX sensibility is not bad (better than the XN297 at same datarate)... probably a NRF24L01 clone. What's a pity we can't access to SPI data with the 2407
Replied by SeByDocKy on topic JJRC H30C with a new RFchip CHOMP ZC2406/ZC2407
dc59 wrote:
goebish wrote: There's no external SPI talking to the transceiver if it's the only IC, no possibility to dump from the TX by "classic" means
How much is this machine ?
I visited their web site , it announced Z2407 chip integrated MCU & 2.4G chip in one chip!
range is 80 meter ; I can't find any datasheet and Z2406 information.
12 IO ports and 7 AD ports.
The RX sensibility is not bad (better than the XN297 at same datarate)... probably a NRF24L01 clone. What's a pity we can't access to SPI data with the 2407
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