TPEHAK
Regular
The controller has been ordered! The production files will be posted soon, stay tuned! Here are the settings
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VESC based most power dense controller (INNOTRACE Shrimp for middrive motors)
- Thread starter TPEHAK
- Start date
TPEHAK
Regular
Guys, today is the day! The world's most power-dense BLDC motor controller INNOTRACE Shrimp is here!
Here is the archive with the KiCAD 10.0.1 project files and Gerber files of the controller PCBs. The firmware and firmware installation instructions can be found in the achieve too. If you feel you might need it or might want it you probably better hurry up! Mxlemming warned us the components availability won't last long! But you know the drill while we have never had a single mistake there is still no guarantee it will work.
drive.google.com
Here is the archive with the KiCAD 10.0.1 project files and Gerber files of the controller PCBs. The firmware and firmware installation instructions can be found in the achieve too. If you feel you might need it or might want it you probably better hurry up! Mxlemming warned us the components availability won't last long! But you know the drill while we have never had a single mistake there is still no guarantee it will work.
VESC Shrimp (Release #1) (2026-05-08).7z
drive.google.com
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TPEHAK
Regular
Production is in progress guys!
TPEHAK
Regular
If you want to check the controller fitment before making decision to order it here are the controller CAD model files for 3D printing
TPEHAK
Regular
Production is complete!
TPEHAK
Regular
The perishable parts from DigiKey have arrived!
I even was able to get those unicorn DIRECTFET things! Man, I feel lucky!
I even was able to get those unicorn DIRECTFET things! Man, I feel lucky!
TPEHAK
Regular
Exciding news guys! The controllers and stencils from JLCPCB have arriver and look beautiful as always!
JLCPCB even sent me more than twice amount of controllers than I ordered, what am I gonna do with all of those? This controller is so small that they probably decided to make more of them.
JLCPCB even sent me more than twice amount of controllers than I ordered, what am I gonna do with all of those? This controller is so small that they probably decided to make more of them.
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TPEHAK
Regular
Here is how you can trim the AMPLIFIER board to make it shorter if necessary
Mask it with masking tape
Chop it with Dremel ouside the lines
Sand the edges along the lines so the lines are still visible
Remove the masking tape and now you have nicely trimmed APLIFIER board
Be aware the internal layers on the side edges of the AMPLIFIER board now have exposed ground and battery voltage so make sure the side edges are isolated and do not touch anything conductive
Mask it with masking tape
Chop it with Dremel ouside the lines
Sand the edges along the lines so the lines are still visible
Remove the masking tape and now you have nicely trimmed APLIFIER board
Be aware the internal layers on the side edges of the AMPLIFIER board now have exposed ground and battery voltage so make sure the side edges are isolated and do not touch anything conductive
TPEHAK
Regular
Bad news, the controller parts from LCSC are stuck on the border
TPEHAK
Regular
The high speed and high precision magnetic encoder from AliExpress has arrived! Can you believe this encoder is almost like the whole controller size!
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TPEHAK
Regular
Yes, the encoder can be very small. I am planning to install this controller in Bafang M620 to test it and there is enough space so I just purchased this one.
TPEHAK
Regular
I do not have all the parts yet (thanks to the customs), but I have enough parts to start assembling the controller. So I started assembling the bottom portion of the AMPLIFIER board. Wish me luck guys!
TPEHAK
Regular
The bottom of the AMPLIFIER board has been soldered. So far so good!
TPEHAK
Regular
The top face of the BRAIN board has been soldeted!
TPEHAK
Regular
The bottom side of the AMPLIFIER board has been complete. So all the SMD parts has been installed on the BRAIN board! Do you think it is going to work?
TPEHAK
Regular
Flashing the Bluetooth and VESC firmware. We are so close guys!
TPEHAK
Regular
It's alive! Bluetooth works, communication works! Holy cow!
TPEHAK
Regular
It looks like the rest of the controller parts from LCSC passed the customs inspection!
TPEHAK
Regular
The parts from LCSC for the AMPLIFIER has arrived and we are almost there guys! Here is a sneak peak
TPEHAK
Regular
Alrighty, the AMPLIFIER board has been complete! Here is the top face assembly process
First of all you need to prepare the parts and one part requires modification. You need to bend the negative battery terminal.
You probably can use pliers to bend it manually but build a 3D printed die to bend it to the necessary shape. The die CAD model can be downloaded here
Just place the terminal in the die and squeeze it with pliers or vice
I also recommend to wrap the plastic housings of the boards interconnect connectors in a few layers of aluminum foil keeping the legs exposed. That is necessary to avoid damaging the plastic housing during hot air soldering process.
Apply soldering paste on the top face of the APLIFIER board. I recommend to solder the first face of the AMPLIFIER board and the BRAIN board with lead free soldering paste and the second face with leaded soldering paste (that helps to avoid the first soldered face solder melting when you will solder the top face)
Here is the lead free soldering paste I used
Here is the leaded soldering paste I used
You can order a custom stencil to skip the next step if you want to, but I used the default stencil so after applying the soldering paste the terminals pads soldering paste needed to be removed
Place all the SMD components except the terminals (the ones cover other components)
Solder the components with hot air avoiding blowing directly on the plastic connectors
Apply soldering paste manually on terminals pads
Place those terminals and solder them with hot air
Solder the second layer ceramic capacitors
Apply some soldering paste on the bottom capacitor, place the second capacitor on top and solder it with hot air
If you did not chop off the bulk capacitors areas solder the bulk capacitors and trim the legs as short as possible. And there you have it, the most power dense controller in the universe AMPLIFIER board is complete
First of all you need to prepare the parts and one part requires modification. You need to bend the negative battery terminal.
You probably can use pliers to bend it manually but build a 3D printed die to bend it to the necessary shape. The die CAD model can be downloaded here
Just place the terminal in the die and squeeze it with pliers or vice
I also recommend to wrap the plastic housings of the boards interconnect connectors in a few layers of aluminum foil keeping the legs exposed. That is necessary to avoid damaging the plastic housing during hot air soldering process.
Apply soldering paste on the top face of the APLIFIER board. I recommend to solder the first face of the AMPLIFIER board and the BRAIN board with lead free soldering paste and the second face with leaded soldering paste (that helps to avoid the first soldered face solder melting when you will solder the top face)
Here is the lead free soldering paste I used
Here is the leaded soldering paste I used
You can order a custom stencil to skip the next step if you want to, but I used the default stencil so after applying the soldering paste the terminals pads soldering paste needed to be removed
Place all the SMD components except the terminals (the ones cover other components)
Solder the components with hot air avoiding blowing directly on the plastic connectors
Apply soldering paste manually on terminals pads
Place those terminals and solder them with hot air
Solder the second layer ceramic capacitors
Apply some soldering paste on the bottom capacitor, place the second capacitor on top and solder it with hot air
If you did not chop off the bulk capacitors areas solder the bulk capacitors and trim the legs as short as possible. And there you have it, the most power dense controller in the universe AMPLIFIER board is complete
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To be fair I'd skip soldering these two with hot air and solder them manually with a super fine tip afterwards. Less risk of damaging the plastic.
TPEHAK
Regular
It is time to replace the good old VESC for Bafang M620 UART by the INNOTRACE Shrimp!
The difference is massive! Significantly smaller size and significantly more power! The old BRAIN board vs the new BRAIN board
The old AMPLIFIER vs the new AMPLIFIER
Started mocking up the wiring
The difference is massive! Significantly smaller size and significantly more power! The old BRAIN board vs the new BRAIN board
The old AMPLIFIER vs the new AMPLIFIER
Started mocking up the wiring
TPEHAK
Regular
Crimped the cables for the Bafang M620 sensors and harness
You can use these male connectors for the Bafang M620 harness
4 pins
www.lcsc.com
6 pins
www.lcsc.com
8 pins
www.lcsc.com
Here are the male pins
www.lcsc.com
Here is a crimping tool works with these pins
You also will need 26AWG wires. I used these silicone wires
Before soldering the CAN-L and CAN-H signal wires to the BRAIN board make sure they are twisted
For the GND and +5V soldering pads on the BRAIN board you can use use 22 AWG wires and solder those to the thinner 26 AWG wires go to the connectors
You can use these male connectors for the Bafang M620 harness
4 pins
PHB-4R | DLL | Price | In Stock | LCSC Electronics
PHB-4R by DLL - In-stock components at LCSC. Price from $0.0252. Free access PHB-4R datasheet, Package, pinout diagrams, and BOM tools.
6 pins
PHB-6R | DLL | Price | In Stock | LCSC Electronics
PHB-6R by DLL - In-stock components at LCSC. Price from $0.0402. Free access PHB-6R datasheet, Package, pinout diagrams, and BOM tools.
8 pins
PHB-8R | DLL | Price | In Stock | LCSC Electronics
PHB-8R by DLL - In-stock components at LCSC. Price from $0.0497. Free access PHB-8R datasheet, Package, pinout diagrams, and BOM tools.
Here are the male pins
PH-RT | DLL | Price | In Stock | LCSC Electronics
PH-RT by DLL - In-stock components at LCSC. Price from $0.0062. Free access PH-RT datasheet, Package, pinout diagrams, and BOM tools.
Here is a crimping tool works with these pins
You also will need 26AWG wires. I used these silicone wires
Before soldering the CAN-L and CAN-H signal wires to the BRAIN board make sure they are twisted
For the GND and +5V soldering pads on the BRAIN board you can use use 22 AWG wires and solder those to the thinner 26 AWG wires go to the connectors
Amazon.com: BNTECHGO 22 Gauge Silicone Wire Kit 10 Color Each 10 ft Flexible 22 AWG Stranded Tinned Copper Wire : Tools & Home Improvement
Buy BNTECHGO 22 Gauge Silicone Wire Kit 10 Color Each 10 ft Flexible 22 AWG Stranded Tinned Copper Wire: Electrical Wire - Amazon.com ✓ FREE DELIVERY possible on eligible purchases
www.amazon.com
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TPEHAK
Regular
Started figuring out the controller placement
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